基于相电流高频特征识别的配电网故障指示器原理

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Abstract It has been a hot issue for the fault location method in the neutral un-effectively grounded system(NUGS) when a single-phase earth fault occurs. In this paper, we start with the theoretical analysis and the time-frequency domain analysis for the faulty phase current in different level of the feeders, and a novel kind of fault indicator is put forward as well as the corresponding fault location algorithm. In comparison with the fault indicator that already exists, this new method does not rely on the zero-sequence current, and auxiliary hardware is not needed, which shows great feasibility. PSCAD/EMTDC based simulation results indicate that the proposed method is immune to the change of the neutral point characteristics, the fault resistance and the voltage.

Key words： Distribution network fault indicator fault location wavelet transform

Received: 10 July 2014 Published: 14 September 2015

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TM774

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	Articles by authors
	Tong Ning
	Yu Mengqi
	Lin Xiangning
	Zhang Rui
	Li Zhengtian

Cite this article:

Tong Ning,Yu Mengqi,Lin Xiangning等. Study for Fault Indicator Based on the Faulty Phase Current Feature Recognition for the Distribution Network[J]. Transactions of China Electrotechnical Society, 2015, 30(12): 465-470.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2015/V30/I12/465

[1] Hänninen S, Lehtonen M. Characteristics of earth faults in electrical distribution networks with high impedance earthing[J]. Electric Power Systems Research, 1998, 44(3): 155-161.
[2] 小电流接地故障选线与定位技术[M]. 电子工业出版社, 2010.
[3] Baldwin T, Renovich Jr F, Saunders L F. Directional ground-fault indicator for high-resistance grounded systems[J]. Industry Applications, IEEE Transactions on, 2003, 39(2): 325-332.
[4] 唐金锐, 尹项根, 张哲, 等. 配电网故障自动定位技术研究综述[J]. 电力自动化设备, 2013, 33(5): 7-13.
Tang Jinrui, Yin Xianggen, Zhang Zhe, et al. Suivey of fault location technology for distribution networks[J]. Electric Power Automation Equipment, 2013, 33(5): 7-13.
[5] 贾清泉, 宋家骅. 应用小波检测故障突变特性实现配电网小电流故障选线保护[J]. 中国电机工程学报, 2001, 21(10): 78-82.
Jia Qingquan, Song Jiahua. Abrupt change detection with wavelet for small current fault relaying[J]. Proceedings of the CSEE, 2001, 21(10): 78-82.
[6] 戴剑锋, 张艳霞. 基于多频带分析的自适应配电网故障选线研究[J]. 中国电机工程学报, 2003, 23(5): 44-47.
Dai Jianfeng, Zhang Yanxia. Study on adaptively choosing fault line under single-phase to ground fault based on analysis of multi-frequency bands[J]. Proceedings of the CSEE, 2003, 23(5): 44-47.
[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): 54-58.
Wang Yaonan, Huo Bailin, Wang Hui, et al. A new criterion for earth fault line selection based on wavelet packets in small current neutral grounding system[J]. Proceedings of the CSEE, 2004, 24(6): 54-58.
[8] 吴乐鹏, 黄纯, 林达斌, 等. 基于暂态小波能量的小电流接地故障选线新方法[J]. 电力自动化设备, 2013, 33(5): 70-75.
Wu Lepeng, Huang Chun, Lin Dabin, et al. Faulty line selection based on transient wavelet energy for non-solid-earthed network[J]. Electric Power Auto- mation Equipment, 2013, 33(5): 70-75.
[9] 张彩友. 单相接地故障指示器技术现状分析[J]. 电网技术, 2007, 31(2): 280-283.
Zhang Caiyou. Analysis for present situation of the single-phase-to-ground fault indicator[J]. Power System Technology, 2007, 31(2): 280-283.
[10] 桑在中, 张慧芬. 用注入法实现小电流接地系统单相接地选线保护[J]. 电力系统自动化, 1996, 20(2): 11-12.
Sang Zaizhong, Zhang Huifen. Protection for single phase to earth fault line selection for ungrounded power system by injecting signal[J]. Automation of Electric Power Systems, 1996, 20(2): 11-12.
[11] Krishnathevar R, Ngu E E. Generalized impedance- based fault location for distribution systems[J]. IEEE transactions on power delivery, 2012, 27(1): 449-451.
[12] 肖鹏. 基于小波分析的小电流接地系统单相接地故障选线研究[D]. 北京: 华北电力大学, 2000.
[13] 龚静. 配电网单相接地故障选线中小波选取问题研究[J]. 电力系统保护与控制, 2009 (18): 5-10.
Gong Jing. Study of wavelet selection for single-phase earth fault line selection in distribution network[J]. Power System Protection and Control, 2009 (18): 5-10.
[14] 陈少华, 尹胜兰, 莫哲. 基于免疫RBF网络改进小波分析的小电流接地故障选线[J]. 电力系统保护与控制, 2012, 40(3): 46-50.
Chen Shaohua, Yin Shenglan, Mo Zhe. Fault line detection in indirectly grounding power system based on wavelet analysis improved by immune RBF network[J]. Power System Protection and Control, 2012, 40(3): 46-50.
[15] 胡鹏. 基于小波分析的小电流接地系统单相接地故障选线研究[D]. 湖南工业大学, 2013.
[16] 张海平, 何正友, 张钧. 基于量子神经网络和证据融合的小电流接地选线方法[J]. 电工技术学报, 2009, 24(12): 171-178.
Zhang Haiping, He Zhengyou, Zhang Jun. A fault line detection method for indirectly grounding power system based on quantum neural network and evidence fusion[J]. Transactions of China Elec- trotechonical Society, 2009, 24(12): 171-178.