电力系统及其自动化学报2017，Vol.29Issue(3)：116-120,130,6.DOI:10.3969/j.issn.1003-8930.2017.03.019
交流侧故障与换相失败时序问题的分析
Analysis of Time Sequence Between AC Fault and Commutation Failure
陈颖 1李袖 1李卓男1
作者信息
- 1. 国网内蒙古东部电力有限公司电力科学研究院,呼和浩特010020
- 折叠
摘要
Abstract
The calculation of time interval between AC fault and commutation failure is a basis for studying the effect of commutation failure on the AC relay protection.After the extractions of local features of DC current during commutation failure in the inverter side,by using the morphological gradient,a unified calculation method of the time sequence between AC fault and commutation failure is proposed based on different local features.In addition,a countermeasure is put forward to prevent the mal-operation of differential directional protection on un-faulted line caused by transient power converse.A model is built based on EMTDC/PSCAD,and the simulation results show the validity of the calculation method.关键词
数学形态学/交流侧故障/换相失败/功率倒向/继电保护Key words
mathematical morphology/AC fault/commutation failure/power converse/relay protection分类
信息技术与安全科学引用本文复制引用
陈颖,李袖,李卓男..交流侧故障与换相失败时序问题的分析[J].电力系统及其自动化学报,2017,29(3):116-120,130,6.
