Line Breakage Fault Protection Based on Ratio Between Sum and Difference of Single-ended Transient Current for Flexible DC Distribution Systems

被引：0
|
作者：
Jia K. [1 ]
Feng T. [1 ]
Zhao Q. [1 ]
Wang C. [1 ]
Bi T. [1 ]
Liu H. [2 ]
机构：
[1] State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources (North China Electric Power University), Beijing
[2] State Key Laboratory of Advanced Power Transmission Technology (Global Energy Interconnection Research Institute), Beijing
来源：
Dianli Xitong Zidonghua/Automation of Electric Power Systems | 2019年 / 43卷 / 08期
基金：
中国国家自然科学基金;
关键词：
Closed-loop operation; DC distribution system; Fault characteristics; Line breakage fault protection; Transient current;
D O I：
10.7500/AEPS20180318004
中图分类号：
学科分类号：
摘要：
The characteristics of line breakage fault in DC distribution system are not distinctive compared with normal operation. The existing line breakage protections which rely on the single-terminal electrical quantity is difficult to identify the faulty line accurately and reliably. This paper proposes a novel protection method for line breakage fault based on ratios between sum and difference of single-ended positive and negative currents. By analyzing the characteristics of line breakage fault in open-loop and closed-loop operation modes of a four-terminal DC distribution system, the differences of line currents between fault pole and non-fault pole can be obtained when line breakage fault occurs. The differences between fault pole and non-fault pole are amplified by the ratios between sum and difference of the line currents to identify the fault pole reliably. The proposed protection principle is simple, straightforward and can avoid the setting calculation problem. In addition, fault identification and pole selection can be achieved quickly based on local measurement information. Finally, the reliability of the proposed method is verified by simulation results. © 2019 Automation of Electric Power Systems Press.
引用
收藏
页码：150 / 157
页数：7
相关论文
共 23 条
  • [1] Rodriguez-Diaz E., Savaghebi M., Vasquez J.C., An overview of low voltage DC distribution systems for residential applications, 2015 IEEE 5th International Conference on Consumer Electronics, pp. 318-322, (2015)
  • [2] Li Y., Wei G., Ma Y., Et al., Dynamic reconfiguration of active distribution network considering electric vehicles and distributed generations, Automation of Electric Power Systems, 42, 5, pp. 102-110, (2018)
  • [3] Jiang D., Zheng H., Research status and developing prospect of DC distribution network, Automation of Electric Power Systems, 36, 8, pp. 98-104, (2012)
  • [4] Ding M., Shi S., Pan H., Et al., Planning of AC/DC hybrid microgrid with electric vehicles charging load integration, Automation of Electric Power Systems, 42, 1, pp. 32-38, (2018)
  • [5] Xue S., Chen C., Jin Y., Et al., A research review of protection technology for DC distribution system, Proceedings of the CSEE, 34, 19, pp. 3114-3122, (2014)
  • [6] Wang D., Mao C., Lu J., Et al., Technical analysis and design concept of DC distribution system, Automation of Electric Power Systems, 37, 8, pp. 82-88, (2013)
  • [7] Wu Z., Jiang D., Lao D., Et al., A novel topology of DC distribution network with fault current limiting static synchronous series compensator, 2017 IEEE PES Innovative Smart Grid Technologies Conference Europe, pp. 1-5, (2017)
  • [8] Hakala T., Lahdeaho T., Jarventausta P., Low-voltage DC distribution utilization potential in a large distribution network company, IEEE Transactions on Power Delivery, 30, 4, pp. 1694-1701, (2015)
  • [9] Bi T., Li M., Jia K., Et al., Review of DC distribution network protection technology, Southern Power System Technology, 40, 3, pp. 53-57, (2016)
  • [10] Fletcher S.D.A., Norman P.J., Fong K., Et al., High-speed differential protection for smart DC distribution systems, IEEE Transactions on Smart Grid, 5, 5, pp. 2610-2617, (2014)
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