电力系统及其自动化学报2013，Vol.25Issue(4)：29-33,5.
相/序电压幅值比较的交直流电网故障选相
Faulty Phase Selection Criterion in AC/DC Hybrid Power System Based on the Comparison of Phase/Sequence Voltage Amplitude
摘要
Abstract
In order to tackle the deficiency that the conventional phase selection component may mal-operate when short-circuit fault occurs at AC outlet of inverter side in a AC/DC hybrid grid,.a novel faulty phase selection algorithm which is based on the comparison of phase/sequence voltage amplitude has been proposed in this paper.In this paper,on the basis of boundary conditions of contingency and the sequence network topology,the quantitative relationship of the faulty phase,non-fault phase voltage amplitudes and the positive sequence voltage amplitude have been analyzed.Hence the faulty phase can be rapidly identified via simple amplitude comparison.This algorithm is without auxiliary criterion and is free of the non-linear characteristic of the convertor stations.The simulated illustration of a certain grid in China validates the effectiveness of proposed algorithm.关键词
交直流混联电网/故障选相/受端系统/换相失败/幅值比较Key words
AC/DC hybrid power system/ faulty phase selection/ receiving terminal/ commutation failure/ voltage amplitude comparison分类
信息技术与安全科学引用本文复制引用
陈静,唐飞,廖清芬..相/序电压幅值比较的交直流电网故障选相[J].电力系统及其自动化学报,2013,25(4):29-33,5.基金项目
国家自然科学基金项目(51077103) （51077103）
国家高技术研究发展863计划(2011AA05A119) （2011AA05A119）
国家电网公司大电网重大专项资助项目课题(SGCC-MPLG029-2012) （SGCC-MPLG029-2012）
