电网技术2011，Vol.35Issue(8)：202-206,5.
过渡电阻对多相补偿阻抗元件影响的分析及对策
Analysis on Impact of Transition Resistance on Multi-Phase Compensation Impedance Element and Its Countermeasures
黄少锋 1江清楷1
作者信息
- 1. 电力系统保护与动态安全监控教育部重点实验室（华北电力大学）,北京市昌平区102206
- 折叠
摘要
Abstract
A kind of multi-phase compensation impedance element that is not impacted by power system oscillation is proposed. Using sequence fault components, the operation characteristics of the multi-phase compensation impedance element under the single-phase earth fault of transmission line via transition resistance is analyzed; the impacts of transition resistance on the multi-phase compensation impedance element under different fault conditions, i.e., inside the protection zone, outside the protection zone and the fault in the reverse direction, are described. In allusion to the feature of the multi-phase compensation impedance element, namely its weak transition resistance endurance capability inside the protection zone and strong transition resistance endurance capability outside the protection zone, it is suggested to overcome the impact of transition resistance on multi-phase compensation impedance element by leading the offset angle into the operation criterion of single-phase distance relay as well as leading in zero-sequence reactance relay, meanwhile, it is also suggested to overcome the steady-state overreach of zero-sequence reactance relay by leading impedance relay that takes positive-sequence voltage as the auxiliary polarization voltage. The effectiveness of the suggested measures is verified by results of simulation based on PSCAD.关键词
过渡电阻/单相接地短路/多相补偿阻抗元件Key words
transition resistance/single-phase earth fault multi-phase compensation impedance element分类
信息技术与安全科学引用本文复制引用
黄少锋,江清楷..过渡电阻对多相补偿阻抗元件影响的分析及对策[J].电网技术,2011,35(8):202-206,5.
