电力系统及其自动化学报2016，Vol.28Issue(11)：20-24,5.DOI:10.3969/j.issn.1003-8930.2016.11.004
基于双端电气量的输电线路故障测距算法
Fault Location Algorithm of Transmission Line Based on Two-terminal Electrical Power Quantities
摘要
Abstract
To overcome the influences of transition resisance and far-end equivalent impedance on the single-terminal fault location algorithm,this paper introduces a phase-comparison algorithm for two-terminal fault location based on two-terminal electrical power quantities. It first deduces the current distribution coefficient formula of transmission line using distribution parameter model,then analyzes the error due to phase-comparison algorithm for single-terminal fault location. It also calculates the non-synchronous angle of transmission line at the two ends. The voltage and current of fault branches along the line are calculated through comparing the voltage and current at one end with the current at the other end using phase-mode transformation and inverse transformation. The minimum value of the characteristic phase shift between the voltage and current of fault branch is thus used in the location. In this paper,distributed parameter line model is used to established ultra-high voltage power transmission system,then simulation is done in Matlab/Simu⁃link. It is proved that the proposed fault location algorithm is not affected by transition resistance,system impedance or fault type,etc.关键词
双端电气量/比相式/分布参数模型/故障测距/电流分布系数Key words
two-terminal electrical quantities/phase comparison/distributed parameter model/fault location/distribu-tion coefficient of current分类
信息技术与安全科学引用本文复制引用
洪亚,谭阳红,张海霞,宋建立..基于双端电气量的输电线路故障测距算法[J].电力系统及其自动化学报,2016,28(11):20-24,5.基金项目
国家自然科学基金资助项目（61102039，51107034）；湖南省自然科学基金资助项目（14JJ7029）；中央高校基金资助项目 （）
