Protection Strategy of Single-pole Grounding Fault in DC Distribution System Based on Coordination of Control and Protection

Shouxiang WANG; Zhenyu WANG; Qi LIU; Qing CHEN; Jinggang YANG

doi:10.7500/AEPS20200320004

您当前的位置：

首页 >

文章列表页 >

Protection Strategy of Single-pole Grounding Fault in DC Distribution System Based on Coordination of Control and Protection

Application Research | 更新时间：2025-06-16

- Protection Strategy of Single-pole Grounding Fault in DC Distribution System Based on Coordination of Control and Protection
- Automation of Electric Power Systems Vol. 44, Issue 17, Pages: 120-126(2020)
- 作者机构：
  
  1.教育部智能电网重点实验室（天津大学），天津市 300072
  2.天津市电力系统仿真控制重点实验室（天津大学），天津市300072
  3.国网江苏省电力有限公司，江苏省南京市 210000
  4.国网江苏省电力有限公司电力科学研究院，江苏省南京市 211000
- 作者简介：
- 基金信息：
  
  National Key R&D Program of China
- DOI：10.7500/AEPS20200320004
  CLC：
- Received：20 March 2020，
  
  Revised：2020-05-29，
  
  Published Online：24 June 2020，
  
  Published：10 September 2020
- 稿件说明：
移动端阅览
王守相,王振宇,刘琪等.基于控制与保护协同的直流配电系统单极接地故障保护策略[J].电力系统自动化,2020,44(17):120-126.

WANG Shouxiang,WANG Zhenyu,LIU Qi,et al.Protection Strategy of Single-pole Grounding Fault in DC Distribution System Based on Coordination of Control and Protection[J].Automation of Electric Power Systems,2020,44(17):120-126.
王守相,王振宇,刘琪等.基于控制与保护协同的直流配电系统单极接地故障保护策略[J].电力系统自动化,2020,44(17):120-126. DOI： 10.7500/AEPS20200320004.

WANG Shouxiang,WANG Zhenyu,LIU Qi,et al.Protection Strategy of Single-pole Grounding Fault in DC Distribution System Based on Coordination of Control and Protection[J].Automation of Electric Power Systems,2020,44(17):120-126. DOI： 10.7500/AEPS20200320004.

摘要

随着电力电子技术的发展，柔性直流配电系统逐渐成为研究热点。单极接地故障是直流配电系统中最为常见的故障类型，当交流侧通过高阻接地时，直流侧发生单极接地故障后，故障电流变化不明显，难以准确定位。文中提出了基于控制与保护协同的双端直流配电系统单极接地故障保护策略，通过就地检测交流接地支路电流微分判断故障发生，进而快速投切交流接地支路上并联的小电阻。相比于传统的差动保护方法，所提方法省去了通信时间，有效提高了保护的快速性。同时，根据保护可靠性的要求，优选了并联小电阻的阻值。最后，在PSCAD/EMTDC平台中进行了仿真分析，验证了所提保护策略的可靠性和快速性。

Abstract

With the development of power electronic technology

flexible DC distribution system has gradually become a research hotspot. Single-pole grounding fault is the most common fault type in the DC distribution system. When the AC side is grounded through high resistance

the change of fault current is not obvious after the single-pole grounding fault occurs on DC side

so it is difficult to accurately locate the fault. Based on the coordination of control and protection

a single-pole grounding fault protection strategy is proposed for double-terminal DC distribution system. By detecting the current differential of the AC grounding branch on the spot to judge the occurrence of the fault

the small resistor in parallel on the AC grounding branch can be switched on quickly. Compared with traditional differential protection methods

the proposed method saves the communication time and effectively improves the rapidity of the protection. At the same time

according to the requirements of protection reliability

the resistance value of the parallel small resistor is optimized. Finally

the simulation analysis is carried out in PSCAD/EMTDC platform to verify the reliability and rapidity of the proposed protection strategy.

关键词

Keywords

references

江道灼 , 郑欢 . 直流配电网研究现状与展望 [J]. 电力系统自动化 , 2012 , 36 ( 8 ): 98 - 104 .

JIANG Daozhuo , ZHENG Huan . Research status and developing prospect of DC distribution network [J]. Automation of Electric Power Systems , 2012 , 36 ( 8 ): 98 - 104 .

XU C , CHENG K . A survey of distributed power system — AC versus DC distributed power system [C]// 2011 4th International Conference on Power Electronics Systems and Applications , July 8 - 10 , 2011 , Hongkong, China.

孙刚 , 时伯年 , 赵宇明 , 等 . 基于MMC的柔性直流配电网故障定位及保护配置研究 [J]. 电力系统保护与控制 , 2015 , 43 ( 22 ): 127 - 133 .

SUN Gang , SHI Bonian , ZHAO Yuming , et al . Research on the fault location method and protection configuration strategy of MMC based DC distribution grid [J]. Power System Protection and Control , 2015 , 43 ( 22 ): 127 - 133 .

宋强 , 赵彪 , 刘文华 , 等 . 智能直流配电网研究综述 [J]. 中国电机工程学报 , 2013 , 33 ( 25 ): 9 - 19 .

SONG Qiang , ZHAO Biao , LIU Wenhua , et al . An overview of research on smart DC distribution power network [J]. Proceedings of the CSEE , 2013 , 33 ( 25 ): 9 - 19 .

QIAO L , LI X , HUANG D , et al . Coordinated control for medium voltage DC distribution centers with flexibly interlinked multiple microgrids [J]. Journal of Modern Power Systems and Clean Energy , 2019 , 7 ( 3 ): 599 - 611 .

王丹 , 毛承雄 , 陆继明 . 直流配电系统技术分析及设计构想 [J]. 电力系统自动化 , 2013 , 37 ( 8 ): 82 - 88 .

WANG Dan , MAO Chengxiong , LU Jiming . Technical analysis and design concept of DC distribution system [J]. Automation of Electric Power Systems , 2013 , 37 ( 8 ): 82 - 88 .

王守相 , 刘琪 , 薛士敏 , 等 . 直流配电系统控制与保护协同关键技术及展望 [J]. 电力系统自动化 , 2019 , 43 ( 23 ): 23 - 30 .

WANG Shouxiang , LIU Qi , XUE Shimin , et al . Key technologies and prospect for coordinated control and protection in DC distribution system [J]. Automation of Electric Power Systems , 2019 , 43 ( 23 ): 23 - 30 .

ZHANG C , SONG G , WANG T , et al . Single-ended traveling wave fault location method in DC transmission line based on wave front information [J]. IEEE Transactions on Power Delivery , 2019 , 34 ( 5 ): 2028 - 2038 .

毕天姝 , 李猛 , 贾科 , 等 . 直流配电网保护技术评述 [J]. 南方电网技术 , 2016 , 10 ( 3 ): 53 - 57 .

BI Tianshu , LI Meng , JIA Ke , et al . Review of DC distribution network protection technology [J]. Southern Power System Technology , 2016 , 10 ( 3 ): 53 - 57 .

李斌 , 何佳伟 , 冯亚东 , 等 . 多端柔性直流电网保护关键技术 [J]. 电力系统自动化 , 2016 , 40 ( 21 ): 2 - 12 .

LI Bin , HE Jiawei , FENG Yadong , et al . Key techniques for protection of multi-terminal flexible DC grid [J]. Automation of Electric Power Systems , 2016 , 40 ( 21 ): 2 - 12 .

李斌 , 叶仕磊 , 温伟杰 , 等 . 基于二极管的直流配电系统故障分区方案及保护策略 [J]. 电力系统自动化 , 2019 , 43 ( 23 ): 99 - 115 .

LI Bin , YE Shilei , WEN Weijie , et al . Diode based fault zone partition scheme and protection strategy in DC distribution system [J]. Automation of Electric Power Systems , 2019 , 43 ( 23 ): 99 - 115 .

吴通华 , 戴魏 , 李新东 , 等 . 柔性直流配电网保护方案及设备研制 [J]. 电力系统自动化 , 2019 , 43 ( 23 ): 123 - 135 .

WU Tonghua , DAI Wei , LI Xindong , et al . Protection scheme and device development of flexible DC distribution network [J]. Automation of Electric Power Systems , 2019 , 43 ( 23 ): 123 - 135 .

戴志辉 , 葛红波 , CROSSLEY P , 等 . 柔性直流配电网故障识别与隔离策略综述 [J]. 华北电力大学学报 , 2017 , 44 ( 4 ): 19 - 28 .

DAI Zhihui , GE Hongbo , CROSSLEY P , et al . An overview on fault detection and isolation strategies of flexible DC distribution networks [J]. Journal of North China Electric Power University , 2017 , 44 ( 4 ): 19 - 28 .

WANG T , SONG G , HUSSAIN K . Adaptive single-pole auto-reclosing scheme for hybrid MMC-HVDC systems [J]. IEEE Transactions on Power Delivery , 2019 , 34 ( 6 ): 2194 - 2203 .

贾科 , 王聪博 , 毕天姝 , 等 . 考虑过渡电阻影响的柔性直流配电系统电流突变量保护 [J]. 电网技术 , 2018 , 42 ( 10 ): 3187 - 3196 .

JIA Ke , WANG Congbo , BI Tianshu , et al . A DC current derivative protection with capability of resisting high resistance for flexible DC distribution system [J]. Power System Technology , 2018 , 42 ( 10 ): 3187 - 3196 .

LI B , HE J , TIAN J , et al . DC fault analysis for modular multilevel converter-based system [J]. Journal of Modern Power Systems and Clean Energy , 2017 , 5 ( 2 ): 275 - 282 .

宋国兵 , 高淑萍 , 蔡新雷 . 高压直流输电线路继电保护技术综述 [J]. 电力系统自动化 , 2012 , 36 ( 22 ): 128 - 134 .

SONG Guobing , GAO Shuping , CAI Xinlei . Survey of relay protection technology for HVDC transmission lines [J]. Automation of Electric Power Systems , 2012 , 36 ( 22 ): 128 - 134 .

SONG G , CHU X , GAO S , et al . A new whole-line quick-action protection principle for HVDC transmission lines using one-end current [J]. IEEE Transactions on Power Delivery , 2015 , 30 ( 2 ): 599 - 607 .

TANG L , OOI B T . Locating and isolating DC faults in multi-terminal DC systems [J]. IEEE Transactions on Power Delivery , 2007 , 22 ( 3 ): 1877 - 1884 .

JIA K , LI M , BI T , et al . A voltage resonance-base single-ended online fault location algorithm for DC distribution networks [J]. Science China Technological Sciences , 2016 , 59 ( 5 ): 721 - 729 .

JIA K , CHRISTOPHER E , THOMAS D , et al . Advanced DC zonal marine power system protection [J]. IET Generation , Transmission & Distribution , 2014 , 8 ( 2 ): 301 - 309 .

薛士敏 , 刘存甲 , 李蒸 , 等 . 基于控保协同的环形直流微网测距式保护 [J]. 高电压技术 , 2019 , 45 ( 10 ): 3059 - 3067 .

XUE Shimin , LIU Cunjia , LI Zheng , et al . Ranging protection of ring DC microgrid system based on control and protection cooperation [J]. High Voltage Engineering , 2019 , 45 ( 10 ): 3059 - 3067 .

朱瑞 , 贾科 , 赵其娟 , 等 . 光伏直流并网系统控保协同故障区段辨识方法 [J]. 电网技术 , 2019 , 43 ( 8 ): 193 - 203 .

ZHU Rui , JIA Ke , ZHAO Qijuan , et al . Fault section identification of flexible DC collection system based on collaborated control-protection method [J]. Power System Technology , 2019 , 43 ( 8 ): 193 - 203 .

戴志辉 , 刘雪燕 , 黄敏 , 等 . 基于相似度比较的环状柔直配电网线路单极接地故障保护 [J]. 电力系统自动化 , 2019 , 43 ( 23 ): 107 - 121 .

DAI Zhihui , LIU Xueyan , HUANG Min , et al . Similarity comparison based single-pole grounding fault protection for lines in ring-shaped flexible DC distribution network [J]. Automation of Electric Power Systems , 2019 , 43 ( 23 ): 107 - 121 .

薛士敏 , 廉杰 , 齐金龙 , 等 . MMC-HVDC故障暂态特性及自适应重合闸技术 [J]. 电网技术 , 2018 , 42 ( 12 ): 203 - 209 .

XUE Shimin , LIAN Jie , QI Jinlong , et al . Fault transient characteristic and adaptive reclosing technique of MMC-HVDC network [J]. Power System Technology , 2018 , 42 ( 12 ): 203 - 209 .

GAO S , LIU Q , SONG G . Current differential protection principle of HVDC transmission system [J]. IET Generation , Transmission & Distribution , 2017 , 11 ( 5 ): 1286 - 1292 .

宋国兵 , 李德坤 , 褚旭 , 等 . 基于参数识别原理的VSC-HVDC输电线路单端故障定位 [J]. 电网技术 , 2012 , 36 ( 12 ): 100 - 105 .

SONG Guobing , LI Dekun , CHU Xu , et al . One-terminal fault location for VSC-HVDC transmission lines based on principles of parameter identification [J]. Power System Technology , 2012 , 36 ( 12 ): 100 - 105 .

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

负载变流器直流侧阻抗降阶模型适用性分析

Control Parameter Design of Virtual DC Machine for DC/DC Converter Based on Equivalent Reduced-order Model

Characteristic Analysis and Parameter Design of Damping Enhancement for Virtual Inertia Control of DC Distribution System

Wide-band Oscillation Stabilization Control of DC Distribution System Considering Random Disturbance

Related Author

LI Zhen

HE Yang

TANG Kaixuan

LI Xiaomeng

QU Bei

TANG Xin

ZHUO Fang

XU Ziyi

Related Institution

School of Electrical Engineering, Xi’an Jiaotong University

School of Future Technology, Xi’an Jiaotong University

Department of Electrical and Electronic Engineering, The Hong Kong Polytechnic University

College of Automation Engineering, Nanjing University of Aeronautics and Astronautics

⁰