电测与仪表2023，Vol.60Issue(12)：82-89,8.DOI:10.19753/j.issn1001-1390.2023.12.012
基于相位补偿的配电网30°合环环流抑制技术
Suppression technology for 30-degree loop-closing circulation in distribution network based on phase compensation
摘要
Abstract
With the development of economy and society,the requirements for the reliability of distribution network power supply are increasing day by day.It has important application value to study the problem of power grid closure with voltage phase difference and to suppress the circulation problem during the loop closure process.In order to investigate the prob-lem of 35 kV power grid closing with a phase difference of 30°,a series transformer and a four-quadrant converter are used for static and dynamic voltage compensation.Based on the principle of voltage vector superposition,a series of phase-shifting transformers are designed to compensate for the voltage difference between the two input terminals.Compared with traditional full-power phase-shifting transformers,the required transformer capacity is halved,which greatly reduces costs.Meanwhile,a four-quadrant converter is used for dynamic voltage compensation to achieve online and precise adjustment of voltage and phase.An online loop-closing strategy is designed to find the best loop-closing point,and automatically close the loop to achieve online uninterrupted load reversal,which effectively improves the power quality and power supply stability of the power grid,and increase the level of intelligence in the power grid closure process.关键词
电网合环/移相变压器/四象限变流器/环流抑制Key words
grid closure/phase-shifting transformer/four-quadrant converter/circulating current suppression分类
信息技术与安全科学引用本文复制引用
李闯,刘永强,马中静,邵云峰,范益民..基于相位补偿的配电网30°合环环流抑制技术[J].电测与仪表,2023,60(12):82-89,8.基金项目
国网山西省电力公司科技项目(5105/2018-15001B) （5105/2018-15001B）
