电力系统自动化Issue(10)：144-150,7.DOI:10.7500/AEPS20140430010
基于相对保护熵与名义过渡电阻的电网故障在线检测方法
Online Fault Detecting Method Based on Relative Protection Entropy and Nominal Transition Resistance
摘要
Abstract
To implement online detection of fault component and improving accuracy and tolerance,the protection entropy is proposed using seven types of wide-area protection actions,as well as the relative protection entropy.Meanwhile,the acquisition of threshold for relative protection entropy is discussed.Its sensitivity to some situations of protection action errors is studied,especially those of quite a few protection rejections on fault line and protection misoperations on adjacent lines.In most situations,the fault line can be accurately detected by protection entropy with simulation test.The method of nominal transition resistance based on limited phasor measuring unit(PMU) is studied,which is used as a supplement to situations in which the protection entropy of suspected line is near to the threshold.The simulation results on IEEE 14-bus system show that,by combining relative protection entropy with nominal transition resistance,the proposed algorithm has higher accuracy and tolerance.关键词
电力系统/保护熵/同步相量测量单元/过渡电阻/在线故障检测Key words
power system/protection entropy/phasor measuring unit(PMU)/transition resistance/online fault detection引用本文复制引用
童晓阳,王晨,罗孝辉,王睿晗..基于相对保护熵与名义过渡电阻的电网故障在线检测方法[J].电力系统自动化,2015,(10):144-150,7.基金项目
国家自然科学基金资助项目(51377137) （51377137）
已申请国家发明专利(申请号:201410587103.2)。This work is supported by National Natural Science Foundation of China(No.51377137) （申请号:201410587103.2）
