电力系统保护与控制Issue(23)：16-22,7.
基于消弧线圈补偿特征的故障选线新方法
Fault line selection approach based on compensation characteristics of extinction coil
司瑞琦 1黄翰 2罗建 1吴罗生 3吉畅 1钟璐4
作者信息
- 1. 输配电装备及系统安全与新技术国家重点实验室 重庆大学，重庆 400044
- 2. 国网重庆市电力公司璧山供电分公司，重庆 402760
- 3. 国网随州供电公司，湖北 随州 441300
- 4. 国网重庆市电力公司江北供电分公司，重庆 400000
- 折叠
摘要
Abstract
Anti-polarity of zero sequence CT leads to failure of fault line selection in extinction coil grounding system. In order to overcome the drawback, a new approach using compensation characteristics of extinction coil is proposed. The healthy line mathematical model for each line is built and the transient component and steady component of zero sequence voltage and current are used to get corresponding admittance parameters. To solve the component annihilation, this paper presents an improved matrix pencil algorithm for the extraction of high frequency component of small amplitude. The rule of the compensation effect of extinction coil is obtained that in set frequency band two component parameters of fault line are opposite in sign or decrease significantly in numerical values and the calculation results for two parameters of healthy line are similar, the fault line selection is realized. Simulation results verify the correctness of the algorithm without the impact of anti-polarity of zero sequence CT, which has highly adaptive capacity for practical engineering.关键词
消弧线圈接地系统/单相接地故障/电流互感器极性/矩阵束/故障选线Key words
extinction coil grounding system/single-line to ground fault/CT polarity/matrix pencil/fault line selection分类
信息技术与安全科学引用本文复制引用
司瑞琦,黄翰,罗建,吴罗生,吉畅,钟璐..基于消弧线圈补偿特征的故障选线新方法[J].电力系统保护与控制,2014,(23):16-22,7.
