考虑复故障的有源配电网故障定位方法

doi:10.19595/j.cnki.1000-6753.tces.200487

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摘要配电网受到极端扰动后可靠故障定位是提升配电网供电可靠性的重要手段。在极端扰动中,配电网中发生复故障的概率增大,主要体现在故障重数多、故障类型多、高阻接地等特征。文章提出一种考虑复故障的有源配电网故障定位方法。基于μPMU优化配置下的区域划分,形成各个监测域。通过搜索算法确定可疑监测域,并启动故障定位算法,利用不平衡电流分量幅值比较的故障区段检测判据定位故障。通过PSCAD/EMTDC和Matlab,验证了该方法不受故障位置和故障类型的影响,适用于多重、多类型故障等复杂场景,且有较高的抗过渡电阻能力。

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	张健磊
	高湛军
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	安树怀

关键词 ：复故障, 可疑监测域, 不平衡电流分量, 故障定位, 广域相量测量

Abstract：Reliable fault location is an important means to improve the power supply reliability of distribution networks after extreme disturbance. In extreme disturbance, the probability of combination fault in distribution networks increases, mainly reflected in the features of high fault multiplicity, multiple fault types and high resistance grounding. In this paper, a fault location method for active distribution networks considering combination faults is proposed. Through the area division based on optimal μPMU configuration, each monitoring area is formed. The suspicious monitoring area is determined by the search algorithm criterion, and the fault location algorithm is started. The fault section detection criterion comparing the amplitude of the unbalanced current component is used to locate the fault. Through PSCAD/EMTDC and Matlab, it is verified that this method is not affected by fault location and fault type, and is suitable for complex scenarios such as combination and multi-type faults. Moreover, it has high resistance against transition resistance.

Key words： Combination faults suspicious monitoring area unbalanced current component fault location wide area phasor information

收稿日期: 2020-05-14

PACS:

TM77

基金资助:国家电网有限公司总部科技项目资助（基于综合能源系统的智能配电网弹性技术与应用基础研究52060019001H）

通讯作者: 高湛军,男,1974年生,副教授,硕士生导师,研究方向为电力系统继电保护、故障诊断。E-mail：jacob-gao@sdu.edu.cn

作者简介: 张健磊,男,1996年生,硕士研究生,研究方向为电力系统继电保护、故障定位。E-mail：zhangjianlei@mail.sdu.edu.cn

引用本文:

张健磊, 高湛军, 陈明, 魏振, 安树怀. 考虑复故障的有源配电网故障定位方法[J]. 电工技术学报, 2021, 36(11): 2265-2276. Zhang Jianlei, Gao Zhanjun, Chen Ming, Wei Zhen, An Shuhuai. Fault Location Method for Active Distribution Networks Considering Combination Faults. Transactions of China Electrotechnical Society, 2021, 36(11): 2265-2276.

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