Distribution network fault location method based on the sudden drop ratio of feeder active load

被引：0
|
作者：
Yang C. [1 ]
Ma J. [1 ]
Yang W. [1 ]
Yang F. [1 ]
Yang X. [2 ]
Huang C. [2 ]
机构：
[1] Kunming Power Supply Bureau, Yunnan Power Grid Co., Ltd., Kunming
[2] College of Electrical and Information Engineering, Hunan University, Changsha
来源：
Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control | 2022年 / 50卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Correlation analysis; Distribution network; Fault analysis; Fault location; Load forecasting; Similar days;
D O I：
10.19783/j.cnki.pspc.210361
中图分类号：
学科分类号：
摘要：
It is difficult to accurately and quickly locate the fault section and outage range after power failure in a distribution network with low-level automation. To solve this problem, a fault location and diagnosis method based on sudden drop ratio (SDR) of the feeder active load is proposed. After the feeder SDR exceeds a certain threshold, the active power of each distribution transformer on the faulty feeder is predicted using the historical load data in the metering automation system, and the load proportion of each switch is calculated. By comparing the feeder SDR and the power proportion of each switch, the fault trip switch and power failure range are judged. Analysis of the results of an engineering example show that the method can accurately locate the fault trip switch, and has good real-time performance. It provides a new fault diagnosis technique for a distribution network independent of the distribution network automation system. © 2022 Power System Protection and Control Press.
引用
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页码：144 / 151
页数：7
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