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| Fictitious Port Method for Parameter Unbalance Power System Fault Calculation |
| Jiang Jiandong1, Wei Zhenzhu1, Wang Xiaohua2 |
| 1. Zhengzhou University Zhengzhou 450001 China 2. Puyang Power Supply Company Puyang 457000 China |
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Abstract In this paper, by introducing the fictitious branch and fictitious node, the fictitious ports to simulate the parameter unbalance and fault are established. By taking fictitious ports as boundary, the faulted parameter unbalance power system is separated into symmetrical network and unsymmetrical network to simulate parameter unbalance and fault. Based on the basic theory of liner circuit, the model for parameter unbalance power system fault calculation is built, and the fictitious port method for parameter unbalance power system fault calculation in sequence domain is presented. The method has the following characteristics: By parameter unbalance simulation, the parameter unbalance power system is transformed to symmetrical network, so the characteristic that symmetrical component can be uncoupled is employed. The parameter unbalance and fault simulation method is united. The simulation network is simple and easy to be implemented using computer. The paramter calculation of fictitious port for simulation the parameter unbalance and fault is same and can be deduced from the balance node paramter. The paramter calculation is efficient. In the end an unsymmetrical power system with a short to earth fault is analyzed as an example.
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Received: 26 July 2010
Published: 04 March 2014
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[1] 西安交通大学等校合编. 电力系统计算[M]. 北京: 水利电力出版社, 1979.
[2] Chen Q, Li X. A general fault analysis algorithm for arbitrary complicated faults[C]. Proceedings of Eighth IEE International Conference on Develop- ments in Power System Protection, April 5-8, 2004, Amsterdam, The Netherland, 2004: 164-167.
[3] Chen Q, Liu Y T. A new algorithm for complex faults and object-oriented programming[J]. Engineering Intelligent Systems for Electrical Engineering and Communications, 2004, 12(2): 107-110.
[4] He W H. Unbalanced short-circuit calculation by phase coordinates[J]. IEEE on Power Delivery, 1995, 10(2): 744-748.
[5] Alex Berman, Wilsun Xu. Analysis of faulted power systems by phase coordinates[J]. IEEE Transactions on Power Delivery, 1998, 13(2):587-595.
[6] 姜彤, 郭志忠, 陈学允, 等. 电力系统多态相分量法的故障分析[J]. 哈尔滨工业大学学报, 2001, 33(4): 505-507, 511.
[7] 王安宁, 陈青, 周占平. 改进的相分量法求解电力系统复杂故障新算法[J]. 电力系统自动化, 2008, 32(18): 39-43.
[8] 曹国臣, 祝滨, 蒋建东. 虚拟故障端口法及其在电网故障计算中的应用[J]. 中国电机工程学报, 2002, 22(5): 42-48. |
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2010, Vol. 25 
