电力系统保护与控制2012，Vol.40Issue(24)：53-58,6.
数字化变电站电子式互感器渐变性故障诊断方法研究
Diagnosis of soft fault of electronic transformer in digital substation
王洪彬 1唐昆明 2徐瑞林 1朱小军 2李筱婧2
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. 重庆市电力公司电力科学研究院,重庆401123
- 折叠
摘要
Abstract
At present, the research on on-line monitoring and fault diagnosis of electronic current transformer (ECT) is in the initial stage, especially for the soft fault diagnosis. Based on the physical electrical characteristics of system components, the current observer models of transmission line and transformer are established. The observer outputs and ECT outputs are compared to constitute the residual for the diagnosis of soft fault, meanwhile the network graph theory is used to locate fault source. The simulation results have verified the correctness of the proposed observer models and the validity of the proposed fault diagnosis method. The method is not affected by the mode change of network operation, and could realize the on-line monitoring and fault diagnosis under the condition of no additional hardware, ECT without power failure and online.关键词
电子式互感器/故障诊断/残差/阈值/故障定位Key words
electronic transformer/ fault diagnosis/ residual/ threshold/ fault location分类
信息技术与安全科学引用本文复制引用
王洪彬,唐昆明,徐瑞林,朱小军,李筱婧..数字化变电站电子式互感器渐变性故障诊断方法研究[J].电力系统保护与控制,2012,40(24):53-58,6.
