Single-Ended Protection Method for UHVDC Transmission Line Based on Hilbert Energy Amplitude Information and Waveform Information

被引：0
|
作者：
Fan Y. [1 ]
Wang Y. [2 ]
机构：
[1] School of Electrical Engineering, Xinjiang University, Urumqi
[2] State Grid Urumqi Power Supply Company, Urumqi
来源：
Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | 2021年 / 36卷 / 09期
关键词：
Frequency characteristics; Hilbert energy; Standard deviati; Strong nonlinearity; Wave shape;
D O I：
10.19595/j.cnki.1000-6753.tces.200241
中图分类号：
学科分类号：
摘要：
The DC transmission system has strong nonlinearity. The traveling wave protection of DC transmission line using the superposition principle and wavelet transform algorithm has the adaptability problems. The traveling wave protection of DC transmission lines only uses the amplitude information of traveling wave transient. There is a problem with protection refusal at the end of the fault. Aiming at this problem, a single-ended protection method for UHVDC transmission line is proposed. By studying the physical boundary characteristics at both ends of the UHVDC transmission line, the relationship between the Hilbert energy waveform information and the voltage traveling wave is derived, and the physical boundary is smoothed to the Hilbert energy waveform. The physical boundary element and the frequency characteristics of the DC transmission line are analyzed. It is found that the physical boundary element and the DC transmission line have attenuating the transient high-frequency component, and the Hilbert energy is used to characterize the attenuation of the high-frequency component. In the case of faults in the DC transmission line, the transient energy amplitude and waveform shape of the high-frequency transient band 5~7kHz are obviously different. The standard deviation is used to describe the high-band Hilbert instantaneous energy amplitude information and waveform information to construct DC. Transmission line fault identification criteria. The fault selection criterion is constructed by using the ratio of the standard deviation of the positive and negative poles to realize the full-line quick-action protection of the fault pole. The simulation results show that the protection method can reliably distinguish faults in the DC line and outside, realize fault selection, and protect the full length of UHVDC lines. © 2021, Electrical Technology Press Co. Ltd. All right reserved.
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页码：1818 / 1830
页数：12
相关论文
共 19 条
  • [1] Teng Yufei, Li Xiaopeng, Lin Sheng, Et al., Adaptability analysis of fault supervision system for long electrode line of UHVDC, Transactions of China Electrotechnical Society, 34, 19, pp. 4154-4161, (2019)
  • [2] Chen Yu, Wen Minghao, Wang Yan, Et al., A high speed protection scheme for outgoing line fault of HVAC transmission lines based on low frequency components, Transactions of China Electrotechnical Society, 35, 11, pp. 2415-2426, (2020)
  • [3] JiaKe, Zhao Qijuan, Feng Tao, Et al., High-frequency fault component distance protection for flexible DC distribution system, Transactions of China Electrotechnical Society, 35, 2, pp. 383-394, (2020)
  • [4] Shu Hongchun, Liu Kezhen, Zhu Shengqiang, Et al., ±800kV UHVDC transmission line protection based on single end electrical transient signal, Proceedings of the CSEE, 30, 31, pp. 108-117, (2010)
  • [5] Li Zhenqiang, Lu Jianfeng, Lu Yanping, A novel scheme of HVDC transmission line voltage traveling wave protection based on wavelet transform, Power System Protection and Control, 38, 13, pp. 40-45, (2010)
  • [6] Qi Guoqiang, Wang Zengping, Directional pilot protection method of fault component for HVDC transmission lines based on Hilbert-Huang transform, Power System Protection and Control, 45, 20, pp. 92-99, (2017)
  • [7] Gao Shuping, SunanJiale, Song Guobing, Et al., Design and simulation of an improved control strategy for variable-speed pitch controlled wind turbine driven generator system, Automation of Electric Power Systems, 35, 5, pp. 52-56, (2011)
  • [8] Xing Luhua, Chen Qing, Fu Zhaoyuan, Et al., Protection principle for HVDC transmission lines based on fault component of voltage and current, Automation of Electric Power Systems, 36, 9, pp. 61-66, (2012)
  • [9] Li Zhenxing, Tan Hong, Ye Shiyun, Et al., A new scheme for UHVDC transmission line protection using ΔI polarity and signal processing, Power System Protection and Control, 46, 15, pp. 68-75, (2018)
  • [10] Chen Shilong, Zhang Jie, Bi Guihong, Et al., A fault location method based on high frequency attenuation characteristic of UHVDC transmission line, Power System Protection and Control, 42, 10, pp. 77-83, (2014)
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