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| Fault analysis and simulation research of local power grid with local small hydropower |
| Li Bo1, Mo Jiefeng1, Wu Hongwen1, Mo Jun2 |
1. Guangxi Power Grid Co., Ltd, Wuzhou Power Supply Bureau, Wuzhou, Guangxi 543002;
2. College of Electrical Engineering, Guangxi University, Nanning 530004 |
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Abstract For 110kV terminal substation with small hydropower, when transient fault occurs in 110kV tie line, local small source needs to be disconnected, and then the responding circuit breaker will be reclosed to restore power supply when the condition of bus non-voltage is satisfied. There was an accident of circuit breaker reclosing failure in Taiping substation of Wuzhou power grid because of the action delay of fault disconnection device when a transient fault occurred in 110kV tie line. The action process of fault disconnection device and the reason of circuit breaker reclosing failure of tie line in 110kV Taiping substation were analyzed according to recorded fault data. Considering the problem of abnormal frequency locking, some solutions of improving device logic and settings were put forward and verified through fault simulation of local power grid with small source.
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Received: 23 October 2017
Published: 18 April 2018
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| Cite this article: |
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Li Bo,Mo Jiefeng,Wu Hongwen等. Fault analysis and simulation research of local power grid with local small hydropower[J]. Electrical Engineering, 2018, 19(4): 1-4.
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| URL: |
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http://dqjs.cesmedia.cn/EN/Y2018/V19/I4/1
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[1] 王彦国, 余群兵, 徐光福, 等. 并网小电源低压解列防误方案分析[J]. 内蒙古电力技术, 2017, 35(3): 25-30.
[2] 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.
[3] 王志龙. 带直配母线的小电源机组电流解列保护研究[J]. 电气技术, 2016, 17(8): 74-76.
[4] 刘匀. 集成小电源解列功能中低压线路保护的探索[J]. 贵州电力技术, 2015, 18(11): 49-51.
[5] 黄金. 电力系统发展性故障实例分析[J]. 电气技术, 2015, 16(10): 111-113, 116.
[6] 李振坤, 周伟杰, 钱啸, 等. 有源配电网孤岛恢复供电及黑启动策略研究[J]. 电工技术学报, 2015, 30(21): 67-75.
[7] 电力行业继电保护标准化委员会. DL/T 584—2007 3~110kV电网继电保护装置运行整定规程[S]. 2007.
[8] 袁普中, 李泽琴. 提高丽江电网联络线重合闸成功率的措施[J]. 电气技术, 2013, 14(2): 101-102.
[9] 高立克, 刘蔚. 地方电网小水电故障解列问题分析研究[J]. 广西电力, 2010, 33(3): 5-8, 16.
[10] 梁兆庭, 黄金. 110kV终端变电站小电源故障解列实例研究[J]. 四川电力技术, 2011, 34(2): 38-40, 59. |
| [1] |
. [J]. Electrical Engineering, 2013, 14(02): 101-102. |
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2018, Vol. 19 
