电力勘测设计Issue(2)：28-34,65,8.DOI:10.13500/j.dlkcsj.issn1671-9913.2024.02.006
电力系统低频振荡期间对三相短路故障的识别
Identification of Three-phase Short-circuit Fault During Low Frequency Oscillation in Power System
张亮1
作者信息
- 1. 新疆驰誉电力工程咨询有限公司,新疆 乌鲁木齐 830000
- 折叠
摘要
Abstract
A new symmetrical fault detection method for distance protection is proposed to maintain the selectivity of the protection device and overcome some shortcomings of the original protection latching algorithm.Firstly,the preprocessing process of the sampled data and the method of extracting the current waveform components using the matrix beam algorithm are briefly introduced.Secondly,an algorithm for judging faults by detecting the DC component in the current is proposed.Finally,the true reliability of the algorithm is verified by PSCAD simulation of various faults and system oscillations.The results show that this algorithm can effectively identify the three symmetrical short-circuit faults that occur during the oscillation of the system,and can be used to monitor the operation of the distance protection device of the power system under the condition of low-frequency oscillation.关键词
低频振荡/矩阵束算法/阻尼/电力系统Key words
low frequency oscillation/matrix pencil/damping/electric power system分类
动力与电气工程引用本文复制引用
张亮..电力系统低频振荡期间对三相短路故障的识别[J].电力勘测设计,2024,(2):28-34,65,8.
