宁夏电力Issue(4)：41-48,8.DOI:10.3969/j.issn.1672-3643.2024.04.008
宁夏电网35 kV电容器组关合涌流计算与仿真分析
Calculation and simulation analysis of closing surge currents in 35 kV capacitor banks in the Ningxia power grid
摘要
Abstract
As the construction of the new power system advances in the Ningxia power grid,there is an increasing urgency for reactive power compensation due to the characteristics of new energy and new energy loads.The parallel capacitor bank,as the most economical solution for substation reactive power compensation,faces challenges with frequent switching requirements due to high-frequency surge currents affecting vacuum and SF6 circuit breakers,limiting improvements in power supply voltage quality.This paper examines the configuration characteristics of 35 kV capacitor banks in the Ningxia power grid and analyzes the impact of typical substation designs on capacitor closing surge currents.It presents a simplified calculation method and simulation analysis for these surge currents.Case calcula-tions and simulation results show that the deviation between the simplified calculation of peak surge current and simula-tion calculation method is within 10%/20%,providing a basis for selecting capacitor switching devices and assessing equipment health under the influence of surge currents.关键词
电容器/真空断路器/关合/涌流/仿真分析Key words
capacitor/vacuum circuit breakers/switching/surge current/simulation analysis分类
信息技术与安全科学引用本文复制引用
马飞越,马青,崔巍,买波..宁夏电网35 kV电容器组关合涌流计算与仿真分析[J].宁夏电力,2024,(4):41-48,8.基金项目
宁夏回族自治区自然科学基金项目(2023AAC03847) （2023AAC03847）
宁夏回族自治区重点研发项目(2022BDE93011) （2022BDE93011）
