一种适用于海缆混合线路的新型故障定位系统*

doi:10.11985/2022.04.026

电气工程学报 ›› 2022, Vol. 17 ›› Issue (4): 250-256.doi: 10.11985/2022.04.026

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一种适用于海缆混合线路的新型故障定位系统^*

徐晓春(), 陈玉林(), 李奔, 谈浩, 赵青春

南京南瑞继保电气有限公司南京 211102

收稿日期:2021-07-26 修回日期:2021-12-20 出版日期:2022-12-25 发布日期:2023-02-03
通讯作者: 徐晓春，男，1984年生，硕士，高级工程师。主要研究方向为电力系统继电保护。E-mail：xuxc@nrec.com
作者简介:陈玉林，男，1980年生，博士，高级工程师。主要研究方向为广域同步相量测量和输电线路故障测距技术。E-mail：chenyl@nrec.com
基金资助:
*国网电力科学研究院有限公司科技资助项目(JS200448)

A Novel Fault Location System for Submarine Cable Hybrid Line

XU Xiaochun(), CHEN Yulin(), LI Ben, TAN Hao, ZHAO Qingchun

NR Electric Co., Ltd., Nanjing 211102

Received:2021-07-26 Revised:2021-12-20 Online:2022-12-25 Published:2023-02-03
Contact: XU Xiaochun, E-mail：xuxc@nrec.com

摘要/Abstract

摘要：

海底电缆线路铺设复杂，当线路出现故障时，很难定位故障的准确位置，电力线路故障点的快速定位是加快电力线路修复、减少停电时间的关键。在分析架空线和海缆故障特征的基础上，提出一种适用于海缆混合线路的故障定位系统。该系统通过故障区段定位装置就地采集海缆两侧的电流，就地进行故障区段定位，并将区段定位的结果通过光纤发送给线路两侧的保护装置。当判断出故障在电缆上时，立即闭锁线路两侧保护装置的重合闸功能。保护装置集成了行波测距模块，在收到区段定位信号的基础上进行适用于混合线路的双端行波测距。大量的仿真测试表明，提出的适用于混合线路的故障定位系统能够实现对混合线路的故障区段精准定位，使混合线路的自适应重合闸应用成为可能；在区段精准定位的基础上能够对混合线路的故障点进行精确定位，可以缩短停电时间，提高供电的可靠性。

关键词: 海缆混合线路, 故障区段定位, 行波测距, 自适应重合闸

Abstract:

Submarine hybrid line laying is complex, when there is a fault on the line, it is difficult to locate the exact location of the fault. Therefore, fast and accurate fault location is the key point to speed up the repair of transmission lines and reduce the outage time. Based on the structure analysis and fault analysis of the submarine hybrid line, an integrated fault location system for the hybrid line is proposed. The system is composed of line protection relays on the ends of the hybrid line and section positioning devices on the ends of the cable. Three phase currents on both sides of the cable are collected by using the flexible optical current transformer which suits to be installed on the joint points. The differential current of the cable section is calculated through optical fiber, then the fault section is determined. When the fault is in the cable, the reclosing function on both sides of the line is blocked immediately. In addition, the line protection relays on both sides integrate the traveling wave fault locating function. With receiving the fault’s section signal, traveling wave fault location can accurately locate the fault point. With lots of simulation tests, it can be proved that the proposed integrated system can realize the hybrid line precise fault location of the hybrid line. It can greatly improve the power supply reliability of the hybrid lines.

Key words: Submarine hybrid line, section positioning, travelling wave fault location, self-adaptive auto-reclosing

中图分类号:

TM734

徐晓春, 陈玉林, 李奔, 谈浩, 赵青春. 一种适用于海缆混合线路的新型故障定位系统^*[J]. 电气工程学报, 2022, 17(4): 250-256.

XU Xiaochun, CHEN Yulin, LI Ben, TAN Hao, ZHAO Qingchun. A Novel Fault Location System for Submarine Cable Hybrid Line[J]. Journal of Electrical Engineering, 2022, 17(4): 250-256.

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参考文献 15

[1]	张艳霞, 王海东, 李婷, 等. LCC-VSC混合直流输电线路的组合型单端故障定位方法[J]. 电力系统自动化, 2019, 43(21):187-199.
	ZHANG Yanxia, WANG Haidong, LI Ting, et al. Combined single-end fault location method for LCC-VSC hybrid HVDC transmission line[J]. Automation of Electric Power Systems, 2019, 43(21):187-199.
[2]	杨林, 王宾, 董新洲. 高压直流输电线路故障测距研究综述[J]. 电力系统自动化, 2018, 42(8):185-191.
	YANG Lin, WANG Bin, DONG Xinzhou. Overview of fault location methods in high voltage direct current transmission lines[J]. Automation of Electric Power Systems, 2018, 42(8):185-191.
[3]	齐郑, 庄舒仪, 何锡祺, 等. 基于母线扰动信号的配电网混合线路行波故障测距技术[J]. 电力系统自动化, 2019, 43(13):124-133.
	QI Zheng, ZHUANG Shuyi, HE Xiqi, et al. Traveling wave fault location technology for hybrid lines in distribution network based on disturbance signal injection at busbar[J]. Automation of Electric Power Systems, 2019, 43(13):124-133.
[4]	束洪春, 宋晶, 田鑫萃. 基于行波传播路径的不等长双回线路单端行波测距[J]. 电力系统自动化, 2018, 42(17):140-149.
	SHU Hongchun, SONG Jing, TIAN Xincui. Fault location of single-terminal traveling wave for unequal-length double-circuit lines based on traveling wave propagation path[J]. Automation of Electric Power Systems, 2018, 42(17):140-149.
[5]	高厚磊, 江世芳, 贺家李. 数字电流差动保护中几种采样同步方法[J]. 电力系统自动化, 1996, 20(9):46-49.
	GAO Houlei, JIANG Shifang, HE Jiali. Sampling synchronization methods in digital current differential protection[J]. Automation of Electric Power Systems, 1996, 20(9):46-49.
[6]	全玉生, 王晓蓉, 杨敏中, 等. 工频双端故障测距算法的鲁棒性问题和新算法研究[J]. 电力系统自动化, 2000, 24(10):28-32.
	QUAN Yusheng, WANG Xiaorong, YANG Minzhong, et al. Two new algorithms and the IR robustness for two-terminal fault location on HV transmission line[J]. Automation of Electric Power Systems, 2000, 24(10):28-32.
[7]	陈平, 徐丙垠, 李京, 等. 现代行波故障测距装置及其运行经验[J]. 电力系统自动化, 2003, 27(6):66-69.
	CHEN Ping, XU Bingyin, LI Jing, et al. Modern travelling wavebased fault locator and its operating experience[J]. Automation of Electric Power Systems, 2003, 27(6):66-69.
[8]	覃剑. 输电线路单端行波故障测距的研究[J]. 电网技术, 2005, 29(15):65-70.
	QIN Jian. Study on single terminal traveling wave fault location of transmission line[J]. Power System Technology, 2005, 29(15):65-70.
[9]	许飞, 董新洲, 王宾, 等. 新型输电线路单端电气量组合故障测距方法及其试验研究[J]. 电力自动化设备, 2014, 34(4):37-42.
	XU Fei, DONG Xinzhou, WANG Bin, et al. Combined single-end fault location method of transmission line and its experiments[J]. Electric Power Automation Equipment, 2014, 34(4):37-42.
[10]	覃剑, 葛维春, 邱金辉, 等. 输电线路单端行波测距法和双端行波测距法的对比[J]. 电力系统自动化, 2006, 30(6):92-95.
	QIN Jian, GE Weichun, QIU Jinhui, et al. Study on single terminal method and double terminal method of travelling wave fault location in transmission lines[J]. Automation of Electric Power Systems, 2006, 30(6):92-95.
[11]	徐晓春, 裘愉涛, 赵萍, 等. 基于多维度相互校验的线路电流差动保护自校正同步策略[J]. 电力系统自动化, 2017, 41(19):135-139.
	XU Xiaochun, QIU Yutao, ZHAO Ping, et al. Multi-dimensional cross-checking based self-correcting synchronization strategy for line current differential protection[J]. Automation of Electric Power Systems, 2017, 41(19):135-139.
[12]	叶杨, 方慧霆, 赵永良, 等. 5G切片在智能电网中的应用[J]. 电力信息与通信技术, 2020, 18(8):67-72.
	YE Yang, FANG Huiting, ZHAO Yongliang, et al. Application of 5G slice in smart grid[J]. Electric Power Information and Communication Technology, 2020, 18(8):67-72.
[13]	王震宇, 孙正伟, 王开白, 等. 输电线路二次自动重合闸方案的设计与验证[J]. 电力系统保护与控制, 2021, 49(19):115-123.
	WANG Zhenyu, SUN Zhengwei, WANG Kaibai, et al. Design and verification of second automatic reclosing scheme for transmission lines[J]. Power System Protection and Control, 2021, 49(19):115-123.
[14]	邢志杰, 雷云涛, 田行军, 等. 基于数据通道的双端行波测距时钟同步[J]. 电工技术, 2019(7):1-3.
	XING Zhijie, LEI Yuntao, TIAN Xingjun, et al. Clock synchronization of double terminal traveling wave ranging based on data channel[J]. Electric Engineering, 2019(7):1-3.
[15]	赵冠琨, 贾科, 陈金锋, 等. 基于断路器重合闸的柔性直流输电线路单端故障测距方法[J]. 电力系统保护与控制, 2021, 49(7):48-56.
	ZHAO Guankun, JIA Ke, CHEN Jinfeng, et al. A single terminal fault location method for a DC transmission line based on circuit breaker reclosing[J]. Power System Protection and Control, 2021, 49(7):48-56.

参数	数值
正序电阻/(Ω/km)	0.024 86
正序电抗/(Ω/km)	0.266
正序电容/(μF/km)	0.013 5
零序电阻/(Ω/km)	0.019 48
零序电抗/(Ω/km)	0.074 62
零序电容/(μF/km)	7.57×10^-3

参数	数值
正序电阻/(Ω/km)	0.019 5
正序电抗/(Ω/km)	0.074 64
正序电容/(μF/km)	0.171
零序电阻/(Ω/km)	0.019 48
零序电抗/(Ω/km)	0.074 62
零序电容/(μF/km)	0.171

故障区段	故障位置/km	过渡电阻/Ω	测距偏差/km
A	0.3	0.1	0.12
A	0.3	300	0.23
A	2.3	0.1	0.05
B	10.8	0.1	0.233
B	10.8	300	0.198
C	23.3	0.1	0.156
C	23.3	300	-0.257
C	50.85	0.1	-0.269
C	50.85	300	-0.271

一种适用于海缆混合线路的新型故障定位系统^*

A Novel Fault Location System for Submarine Cable Hybrid Line

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