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| Test and Research on New Selection Algorithm for Single Phase Grounding Fault in Distribution Network with Distributed Generations |
| Zhu Hong, Wang Yong, Ma Zhoujun, Ji Wenlu |
| State Grid Nanjing Power Supply Company, Nanjing 210000 |
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Abstract The distribution of each phase short-circuit current may be changed when a single phase grounding fault occurs in the distribution network with DGs.According to analysis of the zero sequence current, a new algorithm decomposing zero sequence current on four scales with wavelet function Db4 is presented. Fault characteristic components were extracted to train BP neural network. A distribution model with DGs is built by Matlab/Simulink to verify the algorithm. The results indicate that, the algorithm based on wavelet packet transform and BP neural network has a good practicability and reliability, which is not affected by the neutral grounding, grounding resistance and faults occurring time.
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Published: 22 June 2016
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| Cite this article: |
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Zhu Hong,Wang Yong,Ma Zhoujun等. Test and Research on New Selection Algorithm for Single Phase Grounding Fault in Distribution Network with Distributed Generations[J]. Electrical Engineering, 2016, 17(6): 81-85.
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| URL: |
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http://dqjs.cesmedia.cn/EN/Y2016/V17/I6/81
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[1] 康忠健, 李丹丹, 刘晓林. 应用非工频暂态分量的配电网故障选线方法[J]. 电力自动化设备, 2011, 31(4): 1-6.
[2] 马亚辉, 李欣然, 徐振华, 等. 一种逆变并网型分布式电源统一模型[J]. 电工技术学报, 2013, 28(9): 145-154.
[3] 潘国清, 曾德辉, 王钢, 等. 含PQ控制逆变型分布式电源的配电网故障分析方法[J]. 中国电机工程学报, 2014, 34(4): 555-561.
[4] 齐郑, 杨以涵, 林榕. 基于小波变换和维纳滤波技术的小电流接地系统单相接地故障选线研究[J]. 电网技术, 2004, 28(13): 23-26.
[5] 赵峰, 尹德昌. 小波包与改进BP神经网络的配电网故障选线[J]. 自动化仪表, 2013, 34(9): 4-8.
[6] Butler-Purry K L, Bagriyanik M. Characterization of transients in transformers using discrete wavelet transforms[J]. IEEE Transactions on Power Systems, 2003, 18(2): 648-656.
[7] 王耀南, 霍百林, 王辉, 等. 基于小波包的小电流接地系统故障选线的新判据[J]. 中国电机工程学报, 2004, 24(6): 58-62.
[8] 龚静. 利用小波包分解系数实现配电网单相接地故障选线[J]. 电力系统保护与控制, 2009, 37(24): 94-99. |
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2016, Vol. 17 
