Waveform Distance Coefficient Based Directional Element for AC Transmission Line Protection Near Inverter Station

被引：0
|
作者：
Ji X. [1 ]
Liu D. [2 ]
Xiong P. [2 ]
Chen Y. [3 ]
Yang L. [3 ]
Wen M. [3 ]
机构：
[1] State Grid Hubei Electric Power Co., Ltd., Wuhan
[2] State Grid Hubei Electric Power Co., Ltd., Research Institute, Wuhan
[3] School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan
来源：
Dianli Xitong Zidonghua/Automation of Electric Power Systems | 2024年 / 48卷 / 01期
关键词：
AC/DC hybrid power system; directional element; electromagnetic transient calculation; inverter station; waveform distance coefficient;
D O I：
10.7500/AEPS20220722004
中图分类号：
学科分类号：
摘要：
When the inverter station has only one outgoing line, if the fault of the AC line near the inverter station occurs, the complex characteristics of the inverter station make it difficult for the traditional directional element to identify the fault direction. In this paper, the fault characteristics of AC transmission lines near inverter stations are analyzed. Then, the similarity between AC line current and current variation of the AC boundary element in time domain is proposed. And an electromagnetic transient calculation method is also proposed to calculate current of AC boundary elements by measuring voltage and current. Finally, based on the difference of the waveform distance coefficients between AC line current and AC boundary element current in time domain under forward fault and reverse fault conditions, a new fault direction discrimination principle is proposed. And its performance is verified by extensive simulations. The simulation results show that the proposed directional element can accurately identify the fault direction and has high reliability and sensitivity. © 2024 Automation of Electric Power Systems Press. All rights reserved.
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页码：140 / 149
页数：9
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共 27 条
  • [1] LIU Zhenya, ZHANG Qiping, DONG Cun, Et al., Efficient and security transmission of wind，photovoltaic and thermal power of large-scale energy resource bases through UHVDC projects[J], Proceedings of the CSEE, 34, 16, pp. 2513-2522, (2014)
  • [2] DONG Cun, LIANG Zhifeng, LI Xiaofei, Et al., Study on power optimization of the trans-regional UHVDC delivery channels in promoting renewable energy accommodation capacity [J], Electric Power, 52, 4, pp. 41-50, (2019)
  • [3] YADAV O, NEGI R, KISHOR N., Supplementary frequency regulation in non-synchronous AC system connected via MTDC [J], International Journal of Electrical Power & Energy Systems, 104, pp. 110-123, (2019)
  • [4] LI Xinnian, FU Ying, ZHANG Qingwu, Et al., Prevention method for commutation failure of UHVDC based on interelectrode coupling characteristics[J], Automation of Electric Power Systems, 46, 23, pp. 170-177, (2022)
  • [5] XIA Haitao, ZHOU Xiaoping, LIU Yifeng, Et al., Stability analysis and improvement method for AC/DC system with series compensation and STATCOMs[J], Automation of Electric Power Systems, 46, 22, pp. 151-162, (2022)
  • [6] LIN Xiaowan, DAI Feng, LIU Shenquan, Et al., Unified harmonic state estimation method for AC/DC hybrid power grid with LCC-HVDC[J], Automation of Electric Power Systems, 46, 13, pp. 94-103, (2022)
  • [7] WU Wencheng, WANG Xiaoru, SONG Xinli, Linear state space model identification of AC/DC hybrid system for damping control[J], Automation of Electric Power Systems, 46, 9, pp. 91-98, (2022)
  • [8] LI Junchi, WU Junyong, XIONG Fei, Et al., Analysis and control of safe and stable operation region for multi-port power electronic transformer [J], Automation of Electric Power Systems, 46, 20, pp. 129-138, (2022)
  • [9] LIU C R, ZHAO Y H, WANG C, Et al., Superposition feature of the switching functions for the dynamic phasor model of the converters under commutation failure [J], IET Generation，Transmission & Distribution, 9, 12, pp. 1448-1454, (2015)
  • [10] LIU Xiyang, WANG Zengping, QIAO Xin, Et al., Review on classification and mitigation measures of commutation failures in AC-DC hybrid power grids[J], Smart Power, 48, 6, pp. 1-7, (2020)
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