Optimal Configuration of Capacitor-Type Blocking Device at Neutral Point of Transformer

doi:10.3969/j.issn.1000-565X.2016.08.011

Journal of South China University of Technology (Natural Science Edition) ›› 2016, Vol. 44 ›› Issue (8): 68-73.doi: 10.3969/j.issn.1000-565X.2016.08.011

• Power & Electrical Engineering • Previous Articles Next Articles

Optimal Configuration of Capacitor-Type Blocking Device at Neutral Point of Transformer

XIA Cheng-jun¹XIE Ying-geng¹ LI Meng¹ SUN Wen²

1.School of Electric Power,South China University of Technology,Guangzhou 510640,Guangdong,China; 2.Electric Power Research Institute of Guangdong Power Grid Co.,Ltd.,Guangzhou 510080,Guangdong,China

Received:2015-10-13 Revised:2015-12-14 Online:2016-08-25 Published:2016-07-04
Contact: 夏成军( 1974-) ，男，博士，副教授，主要从事电力系统分析运行与控制、HVDC 与FACTS 研究． E-mail:cjxia@scut.edu.cn
About author:夏成军( 1974-) ，男，博士，副教授，主要从事电力系统分析运行与控制、HVDC 与FACTS 研究．
Supported by:
Supported by the National Hige-tech R&D Program of China( 863 program) ( ( 2012AA050209)

Abstract

Abstract: To configure the capacitor-type blocking devices at the neutral point of a transformer can be taken as an optimization problem.In this paper,a computing model of the power grid with blocking devices is designed.Then,based on the characteristics of capacitors,a mathematic model for optimal configuration is constructed by taking small device number and small sum of neutral point currents as the objectives.In the mathematical model,the particle swarm optimization algorithm is combined to cut off as much device cost as possible without affecting the blocking efficiency,thus achieving the best blocking effect at the cost of the least blocking devices.Finally,the method to solve the computing model is discussed,and an improved optimization algorithm is proposed and then proved to be effective by an example.

Key words: neutral point current of transformer, DC magnetic bias, blocking device, particle swarm optimization

XIA Cheng-jun XIE Ying-geng LI Meng SUN Wen. Optimal Configuration of Capacitor-Type Blocking Device at Neutral Point of Transformer[J]. Journal of South China University of Technology (Natural Science Edition), 2016, 44(8): 68-73.

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Optimal Configuration of Capacitor-Type Blocking Device at Neutral Point of Transformer

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