机械式高压直流真空断路器换流参数研究

doi:10.19595/j.cnki.1000-6753.tces.190670

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (47832 KB) HTML
输出: BibTeX | EndNote (RIS)

摘要基于换流原理的机械式高压直流真空断路器,是高压直流系统短路开断的有效方式之一,电弧熄灭后断口间介质恢复强度能否耐受恢复电压是决定其开断性能的关键,因此换流时间与最小安全开距的配合成为其设计的重要参考依据。该文利用直流开断实验平台,实验研究了高压直流真空开断系统样机在不同换流时刻、开断电流幅值、换流频率、换流电流与开断电流的幅值比(换流比)下的换流时间和最小安全开距。结果表明:换流时刻选择过早会导致电弧因开距不足而重燃,在实验条件下,换流频率3kHz,开断5kA直流电流,最小安全开距约为0.60mm;随着开断电流幅值的增加,最小安全开距近似线性增大;随着换流频率或换流比的增大,换流时间均将明显减小,对最小安全开距的要求也随着断口恢复电压的增加而更高。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	张梓莹
	梁德世
	蔡淼中
	邹积岩
	刘芮彤

关键词 ：机械式高压直流真空断路器, 换流时间, 换流比, 最小安全开距

Abstract：Mechanical high voltage direct current (HVDC) vacuum circuit breaker based on commutation principle is one of the solutions for short circuit failure interruption in HVDC system. After arc extinction, whether the medium recovery strength can withstand the recovery voltage is the key factor influencing the interrupting performance. Therefore, the commutation time and minimum safe stroke become important references for the design of mechanical HVDC vacuum circuit breaker. In this paper, at different initial moments of commutation time, interrupting current amplitudes, commutation frequencies and amplitude ratios of the commutation current to the interrupting current (commutation ratio), the commutation time and minimum safe stroke of DC vacuum circuit breaker were tested by a DC test circuit. The experimental results show that, if the initial moment of commutation time is too early, it may lead to insufficient gap distance between contacts and cause arc reigniting. When the commutation frequency is 3kHz and the interrupting current is 5kA, the minimum safe stroke is about 0.60mm. With the increase of the interrupting current amplitude, the minimum safe stroke increases approximately linearly. The higher the commutation frequency and the commutation ratio, the smaller the commutation time is. The minimum safe stroke is more demanding as the recovery voltage increases.

Key words： Mechanical HVDC vacuum circuit breaker commutation time commutation ratio minimum safe stroke

收稿日期: 2019-06-04

PACS:

TM561

基金资助:国家电网公司2017年总部科技资助项目(0711-160TL14711127)

通讯作者: 张梓莹女,1993年生,硕士研究生,研究方向为高压直流开断。E-mail: 2755855416@qq.com

作者简介: 梁德世男,1988年生,博士研究生,研究方向为高压直流短路开断试验。E-mail: liangdeshi@mail.dlut.edu.cn

引用本文:

张梓莹, 梁德世, 蔡淼中, 邹积岩, 刘芮彤. 机械式高压直流真空断路器换流参数研究[J]. 电工技术学报, 2020, 35(12): 2554-2561. Zhang Ziying, Liang Deshi, Cai Miaozhong, Zou Jiyan, Liu Ruitong. Research on Commutation Parameters of Mechanical HVDC Vacuum Circuit Breaker. Transactions of China Electrotechnical Society, 2020, 35(12): 2554-2561.

链接本文:

https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.190670 https://dgjsxb.ces-transaction.com/CN/Y2020/V35/I12/2554

[1] 邹积岩, 刘晓明, 于德恩. 基于智能模块的高压直流真空断路器研究[J]. 电工技术学报, 2015, 30(13): 47-55.
Zou Jiyan, Liu Xiaoming, Yu De’en.Investigations on the HVDC vacuum circuit breaker based on intelligent models[J]. Transactions of China Electrotechnical Society, 2015, 30(13): 47-55.
[2] 姚骏, 谭义, 裴金鑫, 等. 模块化多电平变流器高压直流输电系统直流故障改进控制策略[J]. 电工技术学报, 2018, 33(14): 3306-3318.
Yao Jun, Tan Yi, Pei Jinxin, et al.Improved control strategy for DC fault in modular multi-level converter HVDC system[J]. Transactions of China Electrotechnical Society, 2018, 33(14): 3306-3318.
[3] 金鑫. 高压直流输电系统极控信号通信网络可靠性分析[J]. 电力系统保护与控制, 2015, 43(12): 110-116.
Jin Xin.Reliability analysis on HVDC pole control signal transmission network[J]. Power System Protection and Control, 2015, 43(12): 110-116.
[4] 肖湘宁, 李伟, 罗超, 等. 特高压直流孤岛运行特性与稳定控制研究综述[J]. 电工技术学报, 2017, 32(10): 1-11.
Xiao Xiangning, Li Wei, Luo Chao, et al.Survey on operational characteristics and stability control of ultra-HVDC transmission system in islanded mode[J]. Transactions of China Electrotechnical Society, 2017, 32(10): 1-11.
[5] Saeedifard M, Graovac M, Dias R F, et al.DC power systems: challenges and opportunities[C]//IEEE PES General Meeting, Providence, RI, 2010: 1-7.
[6] 杨亚宇, 邰能灵, 范春菊, 等. 基于计算电阻的高压直流输电线路纵联保护[J]. 电工技术学报, 2017, 32(7): 84-94.
Yang Yayu, Tai Nengling, Fan Chunju, et al.A pilot protection scheme for HVDC transmission lines based on calculated resistance[J]. Transactions of China Electrotechnical Society, 2017, 32(7): 84-94.
[7] 董文亮, 郭兴宇, 梁德世, 等. 基于电磁斥力机构的直流真空断路器模块[J]. 电工技术学报, 2018, 33(5): 1068-1075.
Dong Wenliang, Guo Xingyu, Liang Deshi, et al.DC vacuum circuit breaker module based on electromagnetic repulsion mechanism[J]. Transactions of China Electrotechnical Society, 2018, 33(5): 1068-1075.
[8] 于洋, 孙学锋, 高鹏, 等. 高压直流输电线路暂态保护分析与展望[J]. 电力系统保护与控制, 2015, 43(2): 148-154.
Yu Yang, Sun Xuefeng, Gao Peng, et al.Analysis and prospect on transient protection for HVDC transmission lines[J]. Power System Protection and Control, 2015, 43(2): 148-154.
[9] 周文广, 刘晓明, 黄翀阳, 等. 60kV双断口直流真空断路器换流回路参数优化分析[J]. 真空科学与技术学报, 2017, 37(9): 885-889.
Zhou Wenguang, Liu Xiaoming, Huang Zhongyang, et al.Optimization and simulation of commutation circuit of 60kV double-break vacuum circuit breaker[J]. Chinese Journal of Vacuum Science and Technology, 2017, 37(9): 885-889.
[10] 王江天, 王兴国, 马静, 等. 基于电容换流的限流式直流断路器[J]. 电力系统保护与控制, 2018, 46(24): 180-186.
Wang Jiangtian, Wang Xingguo, Ma Jing, et al.Current limiting and capacitor commutated hybrid DC circuit breaker[J]. Power System Protection and Control, 2018, 46(24): 180-186.
[11] Premerlani W J.Forced commutation performance of switches for HVDC breaker application[J]. IEEE Transactions on Power Apparatus and Systems, 1982, 101(8): 2721-2727.
[12] 秦涛涛, 黄智慧, 董恩源, 等. 直流真空电弧形态演变的动态影响因素研究[J]. 高压电器, 2015, 51(11): 59-63.
Qin Taotao, Huang Zhihui, Dong Enyuan, et al.Investigations on the appearance evolution of vacuum arcs in the DC interruption[J]. High Voltage Apparatus, 2015, 51(11): 59-63.
[13] Childs S E, Greenwood A N.A model for DC interruption in diffuse vacuum arcs[J]. IEEE Transactions on Plasma Science, 1981, 8(4): 289-294.
[14] 贾申利, 史宗谦, 王立军. 真空断路器用于直流开断研究综述[J]. 高压电器, 2017, 53(3): 12-16.
Jia Shenli, Shi Zongqian, Wang Lijun.Review on the research of vacuum circuit breaker for DC breaking[J]. High Voltage Apparatus, 2017, 53(3): 12-16.
[15] 郑占锋. 基于换流技术的快速直流真空开关理论与应用研究[D]. 大连: 大连理工大学, 2013.
[16] Tokuyama S, Arimatsu K, Yoshioka Y, et al.Development and interrupting tests on 250kV 8kA HVDC circuit breaker[J]. IEEE Transactions on Power Apparatus and Systems, 1985, 104(9): 2452-2459.
[17] Andersson D, Henriksson A.Passive and active DC breakers in the three Gorges-Changzhou HVDC project[C]//Proceedings of the International Conference on Power Systems, Wuhan, China, 2001: 391-395.
[18] 秦涛涛, 董恩源, 刘贵新, 等. 真空直流开断固有介质恢复强度研究[J]. 中国电机工程学报, 2016, 36(5): 1453-1459.
Qin Taotao, Dong Enyuan, Liu Guixin, et al.Free recovery of dielectric strength after DC interruption in vacuum[J]. Proceedings of the CSEE, 2016, 36(5): 1453-1459.
[19] 刘路辉, 庄劲武, 王晨, 等. 小间隙下混合型直流真空断路器的分断特性[J]. 中国电机工程学报, 2014, 34(33): 5991-5997.
Liu Luhui, Zhuang Jinwu, Wang Chen, et al.Interruption characteristics of hybrid DC vacuum circuit breakers with small contact gaps[J]. Proceedings of the CSEE, 2014, 34(33): 5991-5997.
[20] Liu Bin, Wu Jianwen, Zhu Liying, et al.Vacuum arc characters research on DC forcing interruption[C]// 2011 1st Internation Conference on Electric Power Equipment-Switching Technology, Xi’an, China, 2011: 82-85.
[21] Liu Xiaoming, Yu De’en, Zou Jiyan, et al.Multiobjective optimization design of commutation circuit in DC vacuum circuit breaker[C]//2014 International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV), Mumbai, India, 2014: 141-144.
[22] 张超, 刘路辉, 徐国顺, 等. 新型直流真空断路器强迫换流分断特性[J]. 高压电器, 2017, 53(3): 141-146.
Zhang Chao, Liu Luhui, Xu Guoshun, et al.Forced commutation interruption characteristic of novel DC vacuum circuit breaker[J]. High Voltage Apparatus, 2017, 53(3): 141-146.
[23] Niwa Y, Matsuzaki J, Yokokura K.The basic investigation of the high-speed VCB and its application for the DC power system[C]//2008 23rd International Symposium on Discharges and Electrical Insulation in Vacuum, Bucharest, 2008: 107-112.