Professor Bundhit Eua-arporn, Ph.D.
ศ. ดร.บัณฑิต เอื้ออาภรณ์
Education
- Ph.D., (Electrical Energy Engineering), Imperial College, University of London, 1992
- M.Eng, (Electrical Engineering), Chulalongkorn University, 1989
- B.Eng., (Electrical Engineering), Chulalongkorn University, 1987
Email: Bundhit.E@chula.ac.th
Research Interest
- Energy Policy, Planning and Economics
- Power System Reliability
Research Cluster
1.
Wangjiraniran, W; Nidhiritdhikrai, R; Eua-Arporn, B
Scenarios on power generation in Thailand: Uncertainty of nuclear and coal options Journal Article
In: Engineering Journal, vol. 17, no. 3, pp. 9-16, 2013, ISSN: 01258281, (cited By 1).
@article{Wangjiraniran20139,
title = {Scenarios on power generation in Thailand: Uncertainty of nuclear and coal options},
author = {W Wangjiraniran and R Nidhiritdhikrai and B Eua-Arporn},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84879973645&doi=10.4186%2fej.2013.17.3.9&partnerID=40&md5=0f1c8e284ad3e1a8b39651efa1070b4e},
doi = {10.4186/ej.2013.17.3.9},
issn = {01258281},
year = {2013},
date = {2013-01-01},
journal = {Engineering Journal},
volume = {17},
number = {3},
pages = {9-16},
abstract = {The objective of this study is to explore the possible scenarios under the constraint of nuclear and coal-fired power development. In addition, the consequence on the overall cost, greenhouse gas and diversification index of Thailand power generation system is also investigated. The reference scenario has been created on the basis of the power development plan (PDP2010). Three alternative scenarios with the repeal of nuclear power plant (NPP), coal-fired power and their combination have been comparatively simulated. The results show that the overall cost for the worst case without NPP and coal-fired power will increase significantly the overall cost up to 33.8 percent in 2030 compared to the reference scenario. It is caused by the replacement with higher price technology of natural gas combine cycle together with the higher fuel price due to the LNG import. In addition, diversification index will be double in this case. In term of the environmental concern, the GHG emission will possibly increase by 25.1 percent for the case of coal replacing NPP.},
note = {cited By 1},
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The objective of this study is to explore the possible scenarios under the constraint of nuclear and coal-fired power development. In addition, the consequence on the overall cost, greenhouse gas and diversification index of Thailand power generation system is also investigated. The reference scenario has been created on the basis of the power development plan (PDP2010). Three alternative scenarios with the repeal of nuclear power plant (NPP), coal-fired power and their combination have been comparatively simulated. The results show that the overall cost for the worst case without NPP and coal-fired power will increase significantly the overall cost up to 33.8 percent in 2030 compared to the reference scenario. It is caused by the replacement with higher price technology of natural gas combine cycle together with the higher fuel price due to the LNG import. In addition, diversification index will be double in this case. In term of the environmental concern, the GHG emission will possibly increase by 25.1 percent for the case of coal replacing NPP.
2.
Asadamongkol, S; Eua-Arporn, B
Transmission expansion planning with AC model based on generalized Benders decomposition Journal Article
In: International Journal of Electrical Power and Energy Systems, vol. 47, no. 1, pp. 402-407, 2013, ISSN: 01420615, (cited By 32).
@article{Asadamongkol2013402,
title = {Transmission expansion planning with AC model based on generalized Benders decomposition},
author = {S Asadamongkol and B Eua-Arporn},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84871753169&doi=10.1016%2fj.ijepes.2012.11.008&partnerID=40&md5=5409a2938b250f7f8015c32ed3d3f38a},
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year = {2013},
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journal = {International Journal of Electrical Power and Energy Systems},
volume = {47},
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abstract = {This paper proposes a method for solving transmission expansion planning (TEP) problems with application of an AC model. The TEP will be solved by the proposed three-stage procedure. Firstly, a DC model is employed with an application of Benders decomposition to find initial cuts to be used in the next stage. Secondly, the problem is decomposed into investment and operation problems, for which an AC model will be used with initial cuts obtained from the first stage. An optimal plan will be obtained at the end of the second stage. Finally, reactive power optimization is performed. The proposed method is illustrated with a well-known 6-bus Garver system, and then tested with IEEE 24-bus and 75-bus northeastern Thailand systems to demonstrate the advantage of the TEP based on the AC model. © 2012 Elsevier Ltd. All rights reserved.},
note = {cited By 32},
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This paper proposes a method for solving transmission expansion planning (TEP) problems with application of an AC model. The TEP will be solved by the proposed three-stage procedure. Firstly, a DC model is employed with an application of Benders decomposition to find initial cuts to be used in the next stage. Secondly, the problem is decomposed into investment and operation problems, for which an AC model will be used with initial cuts obtained from the first stage. An optimal plan will be obtained at the end of the second stage. Finally, reactive power optimization is performed. The proposed method is illustrated with a well-known 6-bus Garver system, and then tested with IEEE 24-bus and 75-bus northeastern Thailand systems to demonstrate the advantage of the TEP based on the AC model. © 2012 Elsevier Ltd. All rights reserved.
3.
Saksornchai, T; Eua-Arporn, B
Protection system adjustment for high penetration of distributed generation Journal Article
In: ECTI Transactions on Electrical Engineering, Electronics, and Communications, vol. 11, no. 1, pp. 76-84, 2013, ISSN: 16859545, (cited By 2).
@article{Saksornchai201376,
title = {Protection system adjustment for high penetration of distributed generation},
author = {T Saksornchai and B Eua-Arporn},
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journal = {ECTI Transactions on Electrical Engineering, Electronics, and Communications},
volume = {11},
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pages = {76-84},
publisher = {ECTI Association},
abstract = {Excessive number and capacity of Distributed Generation (DG) may cause problems to distribution systems. To maintain existing protection coordination, the system can generally allow DG to be connected at a limited capacity. In case of more DGs are to be connected, it is a challenging issue for distribution system engineers to conduct protection adjustment for which the system can allow increased level of DG penetration. This paper proposes three methods, concerning protection system adjustment, to allow high DG penetration, consisting of over-current protection resetting, directional recloser application, and fuse replacement with recloser. The first method will help relieve the system constraint from existing pick-up current settings whereas the second one helps solve the problem of mis-operation of the mid-line recloser caused by DG back feed fault current. The final method will be used to maintain fuse saving scheme. In this paper, the developed methods are simulated with a test system to illustrate their eectiveness on allowing higher penetration of DG to the system.},
note = {cited By 2},
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Excessive number and capacity of Distributed Generation (DG) may cause problems to distribution systems. To maintain existing protection coordination, the system can generally allow DG to be connected at a limited capacity. In case of more DGs are to be connected, it is a challenging issue for distribution system engineers to conduct protection adjustment for which the system can allow increased level of DG penetration. This paper proposes three methods, concerning protection system adjustment, to allow high DG penetration, consisting of over-current protection resetting, directional recloser application, and fuse replacement with recloser. The first method will help relieve the system constraint from existing pick-up current settings whereas the second one helps solve the problem of mis-operation of the mid-line recloser caused by DG back feed fault current. The final method will be used to maintain fuse saving scheme. In this paper, the developed methods are simulated with a test system to illustrate their eectiveness on allowing higher penetration of DG to the system.
4.
Wangjiraniran, W; Eua-Arporn, B
A study on energy-related GHG mitigation scenario in Thailand Journal Article
In: Engineering Journal, vol. 16, no. 2, pp. 19-29, 2012, ISSN: 01258281, (cited By 2).
@article{Wangjiraniran201219,
title = {A study on energy-related GHG mitigation scenario in Thailand},
author = {W Wangjiraniran and B Eua-Arporn},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84859327615&doi=10.4186%2fej.2012.16.2.19&partnerID=40&md5=99f3d76df05a170d73d74e7667f5f995},
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issn = {01258281},
year = {2012},
date = {2012-01-01},
journal = {Engineering Journal},
volume = {16},
number = {2},
pages = {19-29},
abstract = {The objective of this study is to evaluate the potential of greenhouse gases mitigation for major policy options in Thailand. Three scenarios with different prospects on energy-related greenhouse gases are explored. The picture with no change of government policy which is relied on the existing plan namely 'reference scenario' is simulated as a baseline scenario. A case with undergo progress of the committed plan namely 'case without plan' is compared to an alternative case with more concern on greenhouse gases reduction called 'case with additional plan'. Thus, the impact of existing and non-existing measures can be evaluated comparatively. The results show the quantitative assessment of greenhouse gases mitigation potential for the selected measures. Fuel economy improvement, bio-fuel option as well as nuclear power are prioritized as high potential for greenhouse gases mitigation, while the options of transportation mode switching and energy efficiency in industry have less impact. The results also show the gap between current target and the applicable potential, particularly the term of energy efficiency.},
note = {cited By 2},
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The objective of this study is to evaluate the potential of greenhouse gases mitigation for major policy options in Thailand. Three scenarios with different prospects on energy-related greenhouse gases are explored. The picture with no change of government policy which is relied on the existing plan namely 'reference scenario' is simulated as a baseline scenario. A case with undergo progress of the committed plan namely 'case without plan' is compared to an alternative case with more concern on greenhouse gases reduction called 'case with additional plan'. Thus, the impact of existing and non-existing measures can be evaluated comparatively. The results show the quantitative assessment of greenhouse gases mitigation potential for the selected measures. Fuel economy improvement, bio-fuel option as well as nuclear power are prioritized as high potential for greenhouse gases mitigation, while the options of transportation mode switching and energy efficiency in industry have less impact. The results also show the gap between current target and the applicable potential, particularly the term of energy efficiency.
5.
Saksornchai, T; Eua-Arporn, B
Load variation impact on allowable output power of distributed generator with loss consideration Journal Article
In: IEEJ Transactions on Electrical and Electronic Engineering, vol. 7, no. 1, pp. 46-52, 2012, ISSN: 19314973, (cited By 6).
@article{Saksornchai201246,
title = {Load variation impact on allowable output power of distributed generator with loss consideration},
author = {T Saksornchai and B Eua-Arporn},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-83155176103&doi=10.1002%2ftee.21694&partnerID=40&md5=bc50ad06821f31888e60b81914019751},
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journal = {IEEJ Transactions on Electrical and Electronic Engineering},
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publisher = {John Wiley and Sons Inc.},
abstract = {As more renewable energy is being utilized, the number of distributed generators (DGs) is continuously increasing. In general, DGs provide considerable benefits from both economic and engineering aspects. Determination of the appropriate DG capacity is generally performed under certain operating conditions. However, the system demand varies with the time of the day. Therefore, appropriate DG output power, taking into account distribution feeder loss reduction, also changes over time. This paper investigates the impact of load variation on determining the appropriate DG output power for feeder loss reduction purposes. The branch current decomposition loss allocation based method is further developed to determine an appropriate DG output power taking into account customer load profiles. It is anticipated that the proposed method would help planning engineers to determine the suitable DG power output to be fed into their systems in a short period of time. The obtained results also show that the feeder loss can be managed effectively with appropriate output power of the DG. © 2011 Institute of Electrical Engineers of Japan.},
note = {cited By 6},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
As more renewable energy is being utilized, the number of distributed generators (DGs) is continuously increasing. In general, DGs provide considerable benefits from both economic and engineering aspects. Determination of the appropriate DG capacity is generally performed under certain operating conditions. However, the system demand varies with the time of the day. Therefore, appropriate DG output power, taking into account distribution feeder loss reduction, also changes over time. This paper investigates the impact of load variation on determining the appropriate DG output power for feeder loss reduction purposes. The branch current decomposition loss allocation based method is further developed to determine an appropriate DG output power taking into account customer load profiles. It is anticipated that the proposed method would help planning engineers to determine the suitable DG power output to be fed into their systems in a short period of time. The obtained results also show that the feeder loss can be managed effectively with appropriate output power of the DG. © 2011 Institute of Electrical Engineers of Japan.
6.
Asadamongkol, S; Eua-Arporn, B
Application of Benders decomposition to transmission expansion planning with N - 1 security constraints Journal Article
In: IEEJ Transactions on Electrical and Electronic Engineering, vol. 6, no. 2, pp. 127-133, 2011, ISSN: 19314973, (cited By 3).
@article{Asadamongkol2011127,
title = {Application of Benders decomposition to transmission expansion planning with N - 1 security constraints},
author = {S Asadamongkol and B Eua-Arporn},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-79551637360&doi=10.1002%2ftee.20634&partnerID=40&md5=15eea1c56ca271517a9cf22185f8973d},
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journal = {IEEJ Transactions on Electrical and Electronic Engineering},
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publisher = {John Wiley and Sons Inc.},
abstract = {This paper proposes a methodology for solving a transmission expansion planning problem with N - 1 security constraints consideration. The problem is formulated using a disjunctive model solved by Benders decomposition. A local search procedure is applied to solve the master problem, i.e. investment problem. With this developed methodology, the computational time can be considerably reduced, especially for large system problems, and the global optimality of Bender decomposition can be preserved by solving the master problem in a complete search space for specified iteration numbers. The proposed methodology has been tested with the IEEE 24-bus system and the southern Brazilian system with satisfactory results. © 2011 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.},
note = {cited By 3},
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This paper proposes a methodology for solving a transmission expansion planning problem with N - 1 security constraints consideration. The problem is formulated using a disjunctive model solved by Benders decomposition. A local search procedure is applied to solve the master problem, i.e. investment problem. With this developed methodology, the computational time can be considerably reduced, especially for large system problems, and the global optimality of Bender decomposition can be preserved by solving the master problem in a complete search space for specified iteration numbers. The proposed methodology has been tested with the IEEE 24-bus system and the southern Brazilian system with satisfactory results. © 2011 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.
7.
Arunsawatwong, S; Tia, K; Eua-Arporn, B
Design of static var compensator for power systems subject to voltage fluctuation satisfying bounding conditions Journal Article
In: ECTI Transactions on Electrical Engineering, Electronics, and Communications, vol. 9, no. 2, pp. 297-307, 2011, ISSN: 16859545, (cited By 1).
@article{Arunsawatwong2011297,
title = {Design of static var compensator for power systems subject to voltage fluctuation satisfying bounding conditions},
author = {S Arunsawatwong and K Tia and B Eua-Arporn},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-80055099461&partnerID=40&md5=acb4393051ee5a1afe49b54effc46e62},
issn = {16859545},
year = {2011},
date = {2011-01-01},
journal = {ECTI Transactions on Electrical Engineering, Electronics, and Communications},
volume = {9},
number = {2},
pages = {297-307},
publisher = {ECTI Association},
abstract = {This paper presents the design of a static var compensator for power systems subject to voltage fluctuation by using a known framework comprising the principle of matching and the method of inequalities. In the design formulation, all possible voltage fluctuations are treated as persistent signals having uniform bounds on magnitude and slope. The principal design objective is to ensure that the rotor angle, the generator terminal voltage and the voltage of the nearby bus always deviate from their nominal values within the allowable ranges for all time in the presence of any possible voltage fluctuation. By virtue of the framework, it is clear that once a solution is found, the system is guaranteed to operate satisfactorily in regard to the design objective. The numerical results demonstrate that the framework adopted here is suitable and effective, thereby giving a realistic formulation of the design problem.},
note = {cited By 1},
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This paper presents the design of a static var compensator for power systems subject to voltage fluctuation by using a known framework comprising the principle of matching and the method of inequalities. In the design formulation, all possible voltage fluctuations are treated as persistent signals having uniform bounds on magnitude and slope. The principal design objective is to ensure that the rotor angle, the generator terminal voltage and the voltage of the nearby bus always deviate from their nominal values within the allowable ranges for all time in the presence of any possible voltage fluctuation. By virtue of the framework, it is clear that once a solution is found, the system is guaranteed to operate satisfactorily in regard to the design objective. The numerical results demonstrate that the framework adopted here is suitable and effective, thereby giving a realistic formulation of the design problem.
8.
Asadamongkol, S; Eua-arporn, B
Multistage transmission expansion planning using local branching method Journal Article
In: Engineering Journal, vol. 14, no. 4, pp. 23-40, 2010, ISSN: 01258281, (cited By 2).
@article{Asadamongkol201023,
title = {Multistage transmission expansion planning using local branching method},
author = {S Asadamongkol and B Eua-arporn},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-79960748952&doi=10.4186%2fej.2010.14.4.23&partnerID=40&md5=1378d5b2378b9468b63e99d903d23db9},
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year = {2010},
date = {2010-01-01},
journal = {Engineering Journal},
volume = {14},
number = {4},
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abstract = {This paper proposes a method for solving a large-scale multistage transmission expansion planning problem. The formulated problem is of a large-scale mixed integer linear programming which is difficult to handle by general mathematical optimization techniques. A disjunctive model for a single stage transmission expansion planning is extended for solving the multistage model. In addition, a local branching method is employed with an initial solution obtained from the single stage transmission expansion planning problem. The proposed method has been tested with IEEE 24-bus and a northeastern Thailand power system to show it is efficient to implement for actual power system planning.},
note = {cited By 2},
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This paper proposes a method for solving a large-scale multistage transmission expansion planning problem. The formulated problem is of a large-scale mixed integer linear programming which is difficult to handle by general mathematical optimization techniques. A disjunctive model for a single stage transmission expansion planning is extended for solving the multistage model. In addition, a local branching method is employed with an initial solution obtained from the single stage transmission expansion planning problem. The proposed method has been tested with IEEE 24-bus and a northeastern Thailand power system to show it is efficient to implement for actual power system planning.
9.
Tien, L V; Tayjasanan, T; Yokoyama, A; Eua-Arporn, B
Impacts of voltage sags and protection coordination on sensitive equipment in distribution systems Journal Article
In: IEEJ Transactions on Power and Energy, vol. 130, no. 6, pp. 551-558, 2010, ISSN: 03854213, (cited By 6).
@article{Tien2010551,
title = {Impacts of voltage sags and protection coordination on sensitive equipment in distribution systems},
author = {L V Tien and T Tayjasanan and A Yokoyama and B Eua-Arporn},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-77954453741&doi=10.1541%2fieejpes.130.551&partnerID=40&md5=7c0b4142fd5d163edbf235f1b2674510},
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year = {2010},
date = {2010-01-01},
journal = {IEEJ Transactions on Power and Energy},
volume = {130},
number = {6},
pages = {551-558},
publisher = {Institute of Electrical Engineers of Japan},
abstract = {Nowadays, a lot of sensitive electronic equipment is widely used in modern power systems such as power converters and adjustable speed drivers. Voltage sags have gained more interest due to their consequences on the performance of sensitive equipment (SE). Malfunction or failure of the equipment that leads to work or production losses can be caused by voltage sags. As a result, it is essential to have information on equipment sensitivity. If the magnitude and duration of voltage sag exceed the equipment sensitivity threshold, the equipment can malfunction, and such a consequence can affect an entire automatic process, resulting in high economical losses. Reclosers and fuses are the main overcurrent protection devices in distribution systems. Poor coordination may adversely impact on the sensitive equipment. This paper presents a method to analyze impacts of voltage sags and protection coordination on sensitive equipment. A fault position method and mathematical equations describing characteristics of protection devices are used to calculate voltage sags and the protection settings. Voltage tolerance thresholds and protective device characteristics are used to analyze protection and sensitive equipment coordination. Based on the results, new settings for protective devices can be adjusted for sensitive equipment in distribution systems. The Roy Billinton Test System (RBTS) bus 2 is used to analyze impacts of voltage sags and protection coordination. © 2010 The Institute of Electrical Engineers of Japan.},
note = {cited By 6},
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Nowadays, a lot of sensitive electronic equipment is widely used in modern power systems such as power converters and adjustable speed drivers. Voltage sags have gained more interest due to their consequences on the performance of sensitive equipment (SE). Malfunction or failure of the equipment that leads to work or production losses can be caused by voltage sags. As a result, it is essential to have information on equipment sensitivity. If the magnitude and duration of voltage sag exceed the equipment sensitivity threshold, the equipment can malfunction, and such a consequence can affect an entire automatic process, resulting in high economical losses. Reclosers and fuses are the main overcurrent protection devices in distribution systems. Poor coordination may adversely impact on the sensitive equipment. This paper presents a method to analyze impacts of voltage sags and protection coordination on sensitive equipment. A fault position method and mathematical equations describing characteristics of protection devices are used to calculate voltage sags and the protection settings. Voltage tolerance thresholds and protective device characteristics are used to analyze protection and sensitive equipment coordination. Based on the results, new settings for protective devices can be adjusted for sensitive equipment in distribution systems. The Roy Billinton Test System (RBTS) bus 2 is used to analyze impacts of voltage sags and protection coordination. © 2010 The Institute of Electrical Engineers of Japan.
10.
Eua-arporn, B; Asadamongkol, S
Transmission system expansion planning with consideration of n-1 security constraints Journal Article
In: Engineering Journal, vol. 13, no. 2, pp. 59-74, 2009, ISSN: 01258281, (cited By 0).
@article{Eua-arporn200959,
title = {Transmission system expansion planning with consideration of n-1 security constraints},
author = {B Eua-arporn and S Asadamongkol},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-79960832910&doi=10.4186%2fej.2009.13.2.59&partnerID=40&md5=8523a262d2b785d7f7b744122f4ba9df},
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abstract = {This paper presents a heuristic method for solving transmission system expansion problems (TSEP) with consideration of N-1 security constraints. The method is divided into two phases. An initial plan is established in the first phase by a search process which is based on a modified simplex method and sensitivity indices. The second phase starts from the initial plan and performs the local search in the defined neighborhood. Additionally, reconstruction of the new lines on the existing right of ways, which is one of the interesting issues of TSEP in the urban area, is taken into account. The proposed method provides very satisfactory results compared with others.},
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This paper presents a heuristic method for solving transmission system expansion problems (TSEP) with consideration of N-1 security constraints. The method is divided into two phases. An initial plan is established in the first phase by a search process which is based on a modified simplex method and sensitivity indices. The second phase starts from the initial plan and performs the local search in the defined neighborhood. Additionally, reconstruction of the new lines on the existing right of ways, which is one of the interesting issues of TSEP in the urban area, is taken into account. The proposed method provides very satisfactory results compared with others.
11.
Saksornchai, T; Eua-arporn, B
Determination of allowable capacity of distributed generation with protection coordination consideration Journal Article
In: Engineering Journal, vol. 13, no. 3, pp. 29-44, 2009, ISSN: 01258281, (cited By 11).
@article{Saksornchai200929,
title = {Determination of allowable capacity of distributed generation with protection coordination consideration},
author = {T Saksornchai and B Eua-arporn},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-79960794086&doi=10.4186%2fej.2009.13.3.29&partnerID=40&md5=f45bf597a6b7aadcc2b0e468d1a87ccc},
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abstract = {The presence of distributed generation (DG) provides considerable benefits from both engineering and economic viewpoints. However, it changes radial configuration of the distribution feeders. Consequently it may cause coordination failure to existing protection system which is originally set based on radial configuration. In addition, high penetration level of DG may increase feeder loss, and cause system voltage profile out of a required range. This paper presents an optimization based method to calculate maximum allowable capacity of a DG considering a set of constraints formulated to maintain protection system coordination. In addition feeder loss and system voltage constraints are also taken into account. With the developed methodology, the maximum DG capacity which does not provide adverse effects to the existing system, i.e. violate protection coordination, increase feeder loss, and cause voltage violation, can be obtained.},
note = {cited By 11},
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The presence of distributed generation (DG) provides considerable benefits from both engineering and economic viewpoints. However, it changes radial configuration of the distribution feeders. Consequently it may cause coordination failure to existing protection system which is originally set based on radial configuration. In addition, high penetration level of DG may increase feeder loss, and cause system voltage profile out of a required range. This paper presents an optimization based method to calculate maximum allowable capacity of a DG considering a set of constraints formulated to maintain protection system coordination. In addition feeder loss and system voltage constraints are also taken into account. With the developed methodology, the maximum DG capacity which does not provide adverse effects to the existing system, i.e. violate protection coordination, increase feeder loss, and cause voltage violation, can be obtained.
12.
Wattanasophon, S; Eua-arporn, B
Power distribution protection system design with momentary interruption consideration Journal Article
In: IEEJ Transactions on Electrical and Electronic Engineering, vol. 4, no. 6, pp. 736-741, 2009, ISSN: 19314973, (cited By 0).
@article{Wattanasophon2009736,
title = {Power distribution protection system design with momentary interruption consideration},
author = {S Wattanasophon and B Eua-arporn},
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pages = {736-741},
publisher = {John Wiley and Sons Inc.},
abstract = {An objective of protection system design is to support the system to serve its customers with highly reliable and low-cost power supply. In this paper, a radial distribution protection system design is formulated as a binary integer programming problem to identify number, types, and locations of the protective devices in order to optimize system total cost. The formulated problem takes into account not only the reliability of system components' but also the cost of utility investment and customer interruption, which comprises permanent and momentary interruption. The proposed method has been tested with an actual system with satisfactory results, from which it clearly shows the necessity of the inclusion of the customer interruption cost into the design problem. © 2009 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.},
note = {cited By 0},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
An objective of protection system design is to support the system to serve its customers with highly reliable and low-cost power supply. In this paper, a radial distribution protection system design is formulated as a binary integer programming problem to identify number, types, and locations of the protective devices in order to optimize system total cost. The formulated problem takes into account not only the reliability of system components' but also the cost of utility investment and customer interruption, which comprises permanent and momentary interruption. The proposed method has been tested with an actual system with satisfactory results, from which it clearly shows the necessity of the inclusion of the customer interruption cost into the design problem. © 2009 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.
13.
Wattanasophon, S; Eua-Arporn, B
Power distribution system planning with GIS consideration Journal Article
In: IEEJ Transactions on Power and Energy, vol. 129, no. 8, pp. 984-990, 2009, ISSN: 03854213, (cited By 0).
@article{Wattanasophon2009984,
title = {Power distribution system planning with GIS consideration},
author = {S Wattanasophon and B Eua-Arporn},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-72849119340&doi=10.1541%2fieejpes.129.984&partnerID=40&md5=1c05fa6b17130c26745c250b3df6ceff},
doi = {10.1541/ieejpes.129.984},
issn = {03854213},
year = {2009},
date = {2009-01-01},
journal = {IEEJ Transactions on Power and Energy},
volume = {129},
number = {8},
pages = {984-990},
publisher = {Institute of Electrical Engineers of Japan},
abstract = {This paper proposes a method for solving radial distribution system planning problems taking into account geographical information. The proposed method can automatically determine appropriate location and size of a substation, routing of feeders, and sizes of conductors while satisfying all constraints, i.e. technical constraints (voltage drop and thermal limit) and geographical constraints (obstacle, existing infrastructure, and high-cost passages). Sequential quadratic programming (SQP) and minimum path algorithm (MPA) are applied to solve the planning problem based on net price value (NPV) consideration. In addition this method integrates planner's experience and optimization process to achieve an appropriate practical solution. The proposed method has been tested with an actual distribution system, from which the results indicate that it can provide satisfactory plans. © 2009 The Institute of Electrical Engineers of Japan.},
note = {cited By 0},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
This paper proposes a method for solving radial distribution system planning problems taking into account geographical information. The proposed method can automatically determine appropriate location and size of a substation, routing of feeders, and sizes of conductors while satisfying all constraints, i.e. technical constraints (voltage drop and thermal limit) and geographical constraints (obstacle, existing infrastructure, and high-cost passages). Sequential quadratic programming (SQP) and minimum path algorithm (MPA) are applied to solve the planning problem based on net price value (NPV) consideration. In addition this method integrates planner's experience and optimization process to achieve an appropriate practical solution. The proposed method has been tested with an actual distribution system, from which the results indicate that it can provide satisfactory plans. © 2009 The Institute of Electrical Engineers of Japan.
14.
Daroj, K; Eua-arporn, B
Transmission line loading margin evaluation Journal Article
In: International Journal of Power and Energy Systems, vol. 28, no. 1, pp. 54-62, 2008, ISSN: 10783466, (cited By 0).
@article{Daroj200854,
title = {Transmission line loading margin evaluation},
author = {K Daroj and B Eua-arporn},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-41349118358&partnerID=40&md5=ffbc5ab0acb5e47e074040960cc78346},
issn = {10783466},
year = {2008},
date = {2008-01-01},
journal = {International Journal of Power and Energy Systems},
volume = {28},
number = {1},
pages = {54-62},
abstract = {A method for evaluating loading margin of each transmission line is proposed in this paper. The feasible line flow boundary of each line is firstly formulated on each P-Q plane. Consequently, loading margin in a specified direction of the increased line flow and the minimum loading margin can be calculated. The proposed method can directly evaluate the loading margin on a P/Q mode at an operating point without the need to transform or define loading scenarios. The obtained margin can then be used as an index to detect the proximity to voltage collapse.},
note = {cited By 0},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
A method for evaluating loading margin of each transmission line is proposed in this paper. The feasible line flow boundary of each line is firstly formulated on each P-Q plane. Consequently, loading margin in a specified direction of the increased line flow and the minimum loading margin can be calculated. The proposed method can directly evaluate the loading margin on a P/Q mode at an operating point without the need to transform or define loading scenarios. The obtained margin can then be used as an index to detect the proximity to voltage collapse.
15.
Thitithamrongchai, C; Eua-Arporn, B
Security-constrained optimal power flow: A parallel self-adaptive differential evolution approach Journal Article
In: Electric Power Components and Systems, vol. 36, no. 3, pp. 280-298, 2008, ISSN: 15325008, (cited By 12).
@article{Thitithamrongchai2008280,
title = {Security-constrained optimal power flow: A parallel self-adaptive differential evolution approach},
author = {C Thitithamrongchai and B Eua-Arporn},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-39749114338&doi=10.1080%2f15325000701603942&partnerID=40&md5=6707dc6496f79c4b805bc2675124d754},
doi = {10.1080/15325000701603942},
issn = {15325008},
year = {2008},
date = {2008-01-01},
journal = {Electric Power Components and Systems},
volume = {36},
number = {3},
pages = {280-298},
abstract = {This article proposes a parallel self-adaptive differential evolution with augmented Lagrange multiplier method (pSADE_ALM) to solve security-constrained optimal power flow (SCOPF) problems. The proposed pSADE_ALM is a modified version of sequential self-adaptive differential evolution (SADE_ALM) by exploiting parallel processing techniques to increase the search capability of the algorithm via PC cluster 3 2.8 GHz Pentium IV processors. An IEEE 30-bus system is investigated based on two cases, i.e., (1) the base-case optimal power flow (OPF) problems and (2) the SCOPF problems. The proposed pSADE_ALM shows very impressive results compared with others, e.g., gradient-based methods, tabu search-based methods, evolutionary programming (EP), improved evolutionary programming (IEP), and SADE_ALM.},
note = {cited By 12},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
This article proposes a parallel self-adaptive differential evolution with augmented Lagrange multiplier method (pSADE_ALM) to solve security-constrained optimal power flow (SCOPF) problems. The proposed pSADE_ALM is a modified version of sequential self-adaptive differential evolution (SADE_ALM) by exploiting parallel processing techniques to increase the search capability of the algorithm via PC cluster 3 2.8 GHz Pentium IV processors. An IEEE 30-bus system is investigated based on two cases, i.e., (1) the base-case optimal power flow (OPF) problems and (2) the SCOPF problems. The proposed pSADE_ALM shows very impressive results compared with others, e.g., gradient-based methods, tabu search-based methods, evolutionary programming (EP), improved evolutionary programming (IEP), and SADE_ALM.
16.
Sarjiya,; Eua-Arporn, B; Yokoyama, A
Short-term operating strategy with consideration of load forecast and generating unit uncertainty Journal Article
In: IEEJ Transactions on Power and Energy, vol. 127, no. 11, pp. 1159-1167+6, 2007, ISSN: 03854213, (cited By 6).
@article{Sarjiya2007,
title = {Short-term operating strategy with consideration of load forecast and generating unit uncertainty},
author = {Sarjiya and B Eua-Arporn and A Yokoyama},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-52949143046&doi=10.1541%2fieejpes.127.1159&partnerID=40&md5=661953d7612c52580947ff23769ae5a0},
doi = {10.1541/ieejpes.127.1159},
issn = {03854213},
year = {2007},
date = {2007-01-01},
journal = {IEEJ Transactions on Power and Energy},
volume = {127},
number = {11},
pages = {1159-1167+6},
abstract = {One of the common problems faced by many electric utilities concernes with the uncertainty from both load forecast error and generating unit unavailability. This uncertainty might lead to uneconomic operation if if is not managed properly in the planning stage. Utilities may have many operational tools, e.g. unit commitment, economic dispatch. However, they require a proper operating strategy, taking into account uncertainties. This paper explicitly demonstrates how to include the uncertainties to obtain the best operating strategy for any power systems. The uncertainty of the load forecast is handled using decision analysis method, meanwhile the uncertainty of the generating unit is approached by inclusion of risk cost to the total cost. In addition, three spinning reserve strategies based on deterministic criteria are incorporated in the development of scenario. Meanwhile, Mixed Integer Linear Programming method is utilized to generate unit commitment decision in each created scenario. The best strategy which gives the minimum total cost is selected among the developed scenarios. The proposed method has been tested using a modified of IEEE 24-bus system. Sensitivity analysis with respect to the number of unit, expected unserved energy price, standard deviation of load forecast, and probability of load level is reported. © 2007 The Institute of Electrical Engineers of Japan.},
note = {cited By 6},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
One of the common problems faced by many electric utilities concernes with the uncertainty from both load forecast error and generating unit unavailability. This uncertainty might lead to uneconomic operation if if is not managed properly in the planning stage. Utilities may have many operational tools, e.g. unit commitment, economic dispatch. However, they require a proper operating strategy, taking into account uncertainties. This paper explicitly demonstrates how to include the uncertainties to obtain the best operating strategy for any power systems. The uncertainty of the load forecast is handled using decision analysis method, meanwhile the uncertainty of the generating unit is approached by inclusion of risk cost to the total cost. In addition, three spinning reserve strategies based on deterministic criteria are incorporated in the development of scenario. Meanwhile, Mixed Integer Linear Programming method is utilized to generate unit commitment decision in each created scenario. The best strategy which gives the minimum total cost is selected among the developed scenarios. The proposed method has been tested using a modified of IEEE 24-bus system. Sensitivity analysis with respect to the number of unit, expected unserved energy price, standard deviation of load forecast, and probability of load level is reported. © 2007 The Institute of Electrical Engineers of Japan.
17.
Eua-Arporn, B
Fuzzy interrupted energy assessment rate based on actual system performance Journal Article
In: IEEE Transactions on Power Systems, vol. 20, no. 1, pp. 156-163, 2005, ISSN: 08858950, (cited By 7).
@article{Eua-Arporn2005156,
title = {Fuzzy interrupted energy assessment rate based on actual system performance},
author = {B Eua-Arporn},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-13844320936&doi=10.1109%2fTPWRS.2004.835661&partnerID=40&md5=95b7f1004c261fcaef1f4f6186d3a9ed},
doi = {10.1109/TPWRS.2004.835661},
issn = {08858950},
year = {2005},
date = {2005-01-01},
journal = {IEEE Transactions on Power Systems},
volume = {20},
number = {1},
pages = {156-163},
abstract = {In competitive environment, customer outage cost may be taken into account for the delivery of energy services. Based on a probabilistic approach the outage cost can be evaluated from the Interrupted Energy Assessment Rate (IEAR) which normally requires customer perception on the damages occurred from an electricity interruption. In general the IEAR is only calculated based on mean values, even though the obtained customer damage information usually contains fairly large deviation. To cope with the large deviation of the data, this paper employs fuzzy arithmetic to model the customer damage function which is consequently used in association with power interruption statistics, rather than conventional probabilistic reliability calculation, to calculate the Fuzzy Interrupted Energy Assessment Rate (FIEAR). The proposed method has been tested with a distribution system of which more than 40,000 actual interruptions were recorded. The results show that the FIEAR normally covers the IEAR and provides fiexibility to allow the customer outage cost to be implemented in real competitive environment. © 2005 IEEE.},
note = {cited By 7},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
In competitive environment, customer outage cost may be taken into account for the delivery of energy services. Based on a probabilistic approach the outage cost can be evaluated from the Interrupted Energy Assessment Rate (IEAR) which normally requires customer perception on the damages occurred from an electricity interruption. In general the IEAR is only calculated based on mean values, even though the obtained customer damage information usually contains fairly large deviation. To cope with the large deviation of the data, this paper employs fuzzy arithmetic to model the customer damage function which is consequently used in association with power interruption statistics, rather than conventional probabilistic reliability calculation, to calculate the Fuzzy Interrupted Energy Assessment Rate (FIEAR). The proposed method has been tested with a distribution system of which more than 40,000 actual interruptions were recorded. The results show that the FIEAR normally covers the IEAR and provides fiexibility to allow the customer outage cost to be implemented in real competitive environment. © 2005 IEEE.
18.
Techaumnat, B; Eua-Arporn, B; Takuma, T
Electric field and dielectrophoretic force on a dielectric particle chain in a parallel-plate electrode system Journal Article
In: Journal of Physics D: Applied Physics, vol. 37, no. 23, pp. 3337-3346, 2004, ISSN: 00223727, (cited By 14).
@article{Techaumnat20043337,
title = {Electric field and dielectrophoretic force on a dielectric particle chain in a parallel-plate electrode system},
author = {B Techaumnat and B Eua-Arporn and T Takuma},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-10644276441&doi=10.1088%2f0022-3727%2f37%2f23%2f017&partnerID=40&md5=ae496c25e7f6865e9541d85a566e890c},
doi = {10.1088/0022-3727/37/23/017},
issn = {00223727},
year = {2004},
date = {2004-01-01},
journal = {Journal of Physics D: Applied Physics},
volume = {37},
number = {23},
pages = {3337-3346},
abstract = {This paper presents results of calculations of the electric field and dielectrophoretic force on a dielectric particle chain suspended in a host liquid lying between parallel-plate electrodes. The method of calculation is based on the method of multipole images using the multipole re-expansion technique. We have investigated the effect of the particle permittivity, the tilt angle (between the chain and the applied field) and the chain arrangement on the electric field and force. The results show that the electric field intensification rises in accordance with the increase in the ratio of the particle-to-liquid permittivity, ⌈ε. The electric field at the contact point between the particles decreases with increasing tilt angle, while the maximal field at the contact point between the particles and the plate electrodes is almost unchanged. The maximal field can be approximated by a simple formula, which is a quadratic function of ⌈ε. The dielectrophoretic force depends significantly on the distance from other particles or an electrode. However, for the tilt angles in this paper, the horizontal force on the upper particle of the chain always has the direction opposite to the shear direction. The maximal horizontal force of a chain varies proportional to (⌈ε - 1)1.7 if the particles in the chain are still in contact with each other. The approximated force, based on the force on an isolated chain, has been compared with our calculation results. The comparison shows that no approximation model agrees well with our results throughout the range of permittivity ratios.},
note = {cited By 14},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
This paper presents results of calculations of the electric field and dielectrophoretic force on a dielectric particle chain suspended in a host liquid lying between parallel-plate electrodes. The method of calculation is based on the method of multipole images using the multipole re-expansion technique. We have investigated the effect of the particle permittivity, the tilt angle (between the chain and the applied field) and the chain arrangement on the electric field and force. The results show that the electric field intensification rises in accordance with the increase in the ratio of the particle-to-liquid permittivity, ⌈ε. The electric field at the contact point between the particles decreases with increasing tilt angle, while the maximal field at the contact point between the particles and the plate electrodes is almost unchanged. The maximal field can be approximated by a simple formula, which is a quadratic function of ⌈ε. The dielectrophoretic force depends significantly on the distance from other particles or an electrode. However, for the tilt angles in this paper, the horizontal force on the upper particle of the chain always has the direction opposite to the shear direction. The maximal horizontal force of a chain varies proportional to (⌈ε - 1)1.7 if the particles in the chain are still in contact with each other. The approximated force, based on the force on an isolated chain, has been compared with our calculation results. The comparison shows that no approximation model agrees well with our results throughout the range of permittivity ratios.
19.
Techaumnat, B; Eua-Arporn, B; Takuma, T
Calculation of electric field and dielectrophoretic force on spherical particles in chain Journal Article
In: Journal of Applied Physics, vol. 95, no. 3, pp. 1586-1593, 2004, ISSN: 00218979, (cited By 30).
@article{Techaumnat20041586,
title = {Calculation of electric field and dielectrophoretic force on spherical particles in chain},
author = {B Techaumnat and B Eua-Arporn and T Takuma},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-1142304473&doi=10.1063%2f1.1637138&partnerID=40&md5=4864fe44b5d1e594e0ae645dff89f38c},
doi = {10.1063/1.1637138},
issn = {00218979},
year = {2004},
date = {2004-01-01},
journal = {Journal of Applied Physics},
volume = {95},
number = {3},
pages = {1586-1593},
abstract = {An analytical method for calculating electric field in 3D arrangements of spherical particles is presented and applied to the calculation of the dielectrophoretic force on particles in a dielectric fluid. The method is based on the multipole re-expansion and the method of images, which utilizes fundamental solutions for several arrangements of a multipole. It is capable of calculating electric field for various conditions of particles. Thus, the calculation results show that the force on a particle chain depends greatly on the angle between the applied field and the chain.},
note = {cited By 30},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
An analytical method for calculating electric field in 3D arrangements of spherical particles is presented and applied to the calculation of the dielectrophoretic force on particles in a dielectric fluid. The method is based on the multipole re-expansion and the method of images, which utilizes fundamental solutions for several arrangements of a multipole. It is capable of calculating electric field for various conditions of particles. Thus, the calculation results show that the force on a particle chain depends greatly on the angle between the applied field and the chain.
20.
Didsayabutra, P; Lee, W -J; Eua-Arporn, B
Defining the must-run and must-take units in a deregulated market Journal Article
In: IEEE Transactions on Industry Applications, vol. 38, no. 2, pp. 596-601, 2002, ISSN: 00939994, (cited By 15).
@article{Didsayabutra2002596,
title = {Defining the must-run and must-take units in a deregulated market},
author = {P Didsayabutra and W -J Lee and B Eua-Arporn},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0036505760&doi=10.1109%2f28.993184&partnerID=40&md5=9fb10f5a8ef56660ed4df74bd4f86975},
doi = {10.1109/28.993184},
issn = {00939994},
year = {2002},
date = {2002-01-01},
journal = {IEEE Transactions on Industry Applications},
volume = {38},
number = {2},
pages = {596-601},
abstract = {Reliability must-run (RMR) units are generation facilities that are necessary during certain operating conditions in order to maintain the security of power systems in a competitive environment. Absence of RMR units may result in insecure operation of a system. From a financial point of view, RMR units may become a safety net for independent power producers (IPPs) who enjoy steady incomes or a place for those who prefer not to participate in the competitive market. This paper presents a practical method to determine RMR units and their must-run output in the Thailand power market, according to the proposed structure of the Thailand deregulated market to be implemented in 2003 (forecasted opening date of the operation based on information of August 1999). The study determines the amount of must-run output in RMR units by finding the necessary amount of generation to avoid the violation of voltage magnitude, thermal limit, and voltage stability limit. The proposed procedure to determine RMR units defines the amount of generation capacity to be assigned as RMR and allows must-run units to sell surplus generation capacity to the system.},
note = {cited By 15},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Reliability must-run (RMR) units are generation facilities that are necessary during certain operating conditions in order to maintain the security of power systems in a competitive environment. Absence of RMR units may result in insecure operation of a system. From a financial point of view, RMR units may become a safety net for independent power producers (IPPs) who enjoy steady incomes or a place for those who prefer not to participate in the competitive market. This paper presents a practical method to determine RMR units and their must-run output in the Thailand power market, according to the proposed structure of the Thailand deregulated market to be implemented in 2003 (forecasted opening date of the operation based on information of August 1999). The study determines the amount of must-run output in RMR units by finding the necessary amount of generation to avoid the violation of voltage magnitude, thermal limit, and voltage stability limit. The proposed procedure to determine RMR units defines the amount of generation capacity to be assigned as RMR and allows must-run units to sell surplus generation capacity to the system.