A fault identification method of an AC transmission line based on a multifractal spectrum

被引：0

作者：

Li X. ^{[1
]}

Ding X. ^{[1
]}

Shu H. ^{[2
]}

An N. ^{[2
]}

Dong J. ^{[2
]}

Tian X. ^{[2
]}

Zhang X. ^{[2
]}

Dai Y. ^{[2
]}

机构：

[1] State Grid Sichuan Electric Power Research Institute, Chengdu

[2] School of Electric Power Engineering, Kunming University of Science and Technology, Kunming

来源：

Li, Xiaopeng (lxpbsd@163.com) | 1600年 / Power System Protection and Control Press卷 / 49期

基金：

中国国家自然科学基金;

关键词：

AC transmission system; Fault identification; Mass distribution probability; Multi-classification spectrum; Remote high resistance;

D O I：

10.19783/j.cnki.pspc.201149

中图分类号：

学科分类号：

摘要：

Simulation and analysis of the internal and external faults of a high-voltage AC transmission system shows that the physical boundary formed by the AC transmission line wave trap and the bus-to-ground capacitance has an attenuation effect on the high-frequency signal. This makes the high-frequency component of the fault voltage at the measuring terminal at external fault low, and the probability of mass distribution is relatively uniform in different time periods. When a fault occurs in the area, the high-frequency component of the fault voltage at the measuring terminal is high, and the probability of mass distribution is uneven in different time periods. Therefore, the non-uniformity Δα of the quality probability distribution of each subset on the multifractal set formed by each division is calculated using the single-side fault phase voltage of the line within the short-time window to identify the internal and external faults. This method can distinguish between internal and external faults by only using a single-ended voltage, is not affected by the channel, has high reliability, and has great engineering significance. Through a large number of PSCAD simulation experiments, it is concluded that this method has high reliability, strong ability to withstand transition resistance, and has a good ability to distinguish different fault types and remote high resistance. © 2021 Power System Protection and Control Press.

引用

页码：1 / 10

页数：9

共 29 条

[1] LIN T, JUN A D., Novel complex filter with recursive algorithm for phasor computation in power-quality monitoring, IEE Proceedings-Generation, Transmission and Distribution, 153, 3, pp. 283-290, (2006)
[2] DAMBHARE S, SOMAN S A, CHANDORKAR M C., Adaptive current differential protection schemes for transmission-line protection, IEEE Transactions on Power Delivery, 24, 4, pp. 1832-1841, (2009)
[3] ZHOU Hualiang, SONG Bin, AN Lin, Et al., Key technologies and development of distributed fault diagnosis system for EHV transmission line, Power System Protection and Control, 47, 24, pp. 115-122, (2019)
[4] ZHUANG Wenbing, ZHANG Han, WANG Jian, Et al., Temporal and spatial analysis of terrain and wind characteristics along 750 kV UHV transmission lines in Xinjiang, High Voltage Apparatus, 55, 1, pp. 190-196, (2019)
[5] LU Jianing, YE Xiaohui, YANG Mingyu, Power coordination control strategy for hybrid cascaded multi-terminal HVDC system, Smart Power, 48, 9, pp. 9-15, (2020)
[6] LIU Niming, NING Lianhui, GAO Liang, Et al., Fault line identification method for multi-terminal hybrid DC transmission system, Smart Power, 48, 3, pp. 1-6, (2020)
[7] (2009)
[8] DONG Xinzhou, GE Yaozhong, HE Jiali, Surge impedance relay, IEEE Transactions on Power Delivery, 20, 2, pp. 1247-1256, (2005)
[9] (2005)
[10] XIA Mingchao, HUANG Yizhuang, ZHAO Woquan, A novel protect algorithm for high voltage transmission line using multi-end transient currents, Proceedings of the CSEE, 24, 2, pp. 40-43, (2004)

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