计算机与数字工程2019，Vol.47Issue(4)：980-984,1009,6.DOI:10.3969/j.issn.1672-9722.2019.04.048
基于PSCAD配电网合环电流仿真与分析
Simulation and Analysis of Closed Loop Current in Distribution Network Based on PSCAD
摘要
Abstract
Loop-closing surge current is one of the important reasons for relay protection misoperation. It is of great signifi?cance to study the influencing factors of the closed loop current generated during the closed-loop operation of the distribution net?work for reducing assault of the loop circuit and improving the reliability of the power supply system. By modeling loop current and analyzing the relationship between the loop current and the voltage difference at the closing point and total impedance,it is found that when selecting a circuit with a small voltage difference and a close load at both ends,the assault of circuit is minimal and it is beneficial to improving the success rate of the closed loop. Finally,a equivalent loop model based on PSCAD of distribution network for 10kV feeders in three modes of a certain area is established. It verifies the correctness and effectiveness of the optimal path and provides reliable manipulation basis for safe and stable operation of distribution network.关键词
配电网/合环操作/稳态电流/冲击电流Key words
distribution network/loop closing operation/steady-state current/surge current分类
信息技术与安全科学引用本文复制引用
周宁,邵文权,张志华,姚迪..基于PSCAD配电网合环电流仿真与分析[J].计算机与数字工程,2019,47(4):980-984,1009,6.基金项目
国家电网公司科技项目"面向电力通信现场的智能运维技术研究与示范应用"(编号:SGTYHT/16-JS-198)资助. （编号:SGTYHT/16-JS-198）
