电力系统自动化Issue(18)：114-121,8.DOI:10.7500/AEPS20150310009
一种抗过渡电阻的新型自适应距离保护方案
A New Adaptive Distance Protection Scheme Against Transition Resistance
摘要
Abstract
In view of the influence of the transition resistance on distance protection,a new adaptive distance protection is proposed.First,according to the fault voltage and current vector distribution in the single-supply and double-supply systems, the voltage drop equation between the fault point and the relay installed location is developed and the adaptive setting coefficient is calculated.On this basis,the fault location is determined by the phase relationship between the fault current and the measured current at the relay.Finally,an adaptive distance protection criterion is developed.Simulation results based on the real time digital simulator(RTDS) show that the method proposed is able to modify the protection setting value adaptively on line,and is immune to transition resistance.Besides,it is simple in formation and easy to implement.关键词
距离保护/电压降落方程/相位角/过渡电阻Key words
distance protection/voltage drop equation/phase angle/transition resistance引用本文复制引用
马静,王卓,李文可,马伟,闫新,李建芳..一种抗过渡电阻的新型自适应距离保护方案[J].电力系统自动化,2015,(18):114-121,8.基金项目
国家自然科学基金资助项目(51277193) （51277193）
国家电网公司科技项目(PD71-13-031)。This work is supported by National Natural Science Foundation of China (No.51277193) and State Grid Corporation of China(No.PD71-13-031) （PD71-13-031）
