| 用于含分布式电源配网保护的无电压方向元件研究 |
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| 引用本文： | 贾伟,张永生,吴寿山. 用于含分布式电源配网保护的无电压方向元件研究[J]. 电力系统保护与控制, 2011, 39(2): 94-97,118 |
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| 作者姓名： | 贾伟 张永生 吴寿山 |
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| 作者单位： | 1.西安交通大学电气学院，陕西 西安 710049;2.西北电网有限公司，青海 西宁 810000 |
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| 摘 要： | 针对含有分布式电源的配网电流保护需要安装方向元件以确保动作的正确性,提出了一种只利用电流信息判断故障方向的方法.分析含有分布式电源的配网发生短路故障时的电流特征,得出无故障支路的电流故障分量模值较小,故障支路的电流故障分量模值最大,由此可以判断出故障的方向.运用PSS/E软件,对IEEE34节点系统对各种故障进行仿真,...
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| 关 键 词： | 分布式发电 配电网 保护误动 故障分量 方向元件 |
Research on directional element without voltage in distribution network protection with DG |
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| JIA Wei,ZHANG Yong-sheng,WU Shou-shan. Research on directional element without voltage in distribution network protection with DG[J]. Power System Protection and Control, 2011, 39(2): 94-97,118 |
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| Authors: | JIA Wei ZHANG Yong-sheng WU Shou-shan |
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| Affiliation: | JIA Wei1,ZHANG Yong-sheng2,WU Shou-shan1 (1. School of Electrical Engineering,Xi'an Jiaotong University,Xi'an 710049,China,2. Northwest China Grid Company,Xining 810000,China) |
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| Abstract: | As to distribution system with DG,its current protection needs directional element to ensure the correctness of action. Based on that,a method of distinguishing the fault direction using only current information is proposed.By analyzing the characteristics of short-circuit current when fault occurs in distribution system with DG,it shows that the modular of current fault component of non-fault branch is smaller,and the modular of the current fault component of fault branch is the largest.According to that,t... |
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| Keywords: | distributed generation distribution network protection mal-operation fault component directional element |
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