摘要
目前变电站的电压无功综合自动控制装置主要是针对110k V及以下两个电压等级的变电站,且仅以低压侧电压和高压侧功率因数作为主控目标。对于220k V三电压等级变电站,本文提出一种基于磁控电抗器(MCR)和磁控静止无功补偿装置(MSVC)的变电站多电压等级无功电压综合控制方法,在综合考虑主变压器各侧的相互影响以及两侧无功补偿装置的配合作用的基础上,以变电站三侧母线电压和高压侧功率因数为控制目标。同时本文建立了包含两台主变压器的变电站Matlab/Simulink仿真模型且进行了仿真研究,主变中压侧配置MCR、低压侧配置MSVC,并将其与单独在低压侧接MSVC和单独在中压侧接MCR的仿真研究进行对比,结果表明中、低压侧配合协调控制的方法可在不同的运行方式下实现三侧电压合格以及总体无功平衡,有效地改善电能质量。
Nowadays the automatic control device for voltage and reactive power is mainly implemented in l 10kV or lower voltage level substations, which aims at controlling the voltage of low-voltage side and the power factor of high-voltage side. For 220kV substations with three voltage ranks, this paper offers a new approach of voltage and var integrated control based on MCR and MSVC. Considering the interaction between each side of the transformer, this method focuses on the bus voltage of three different voltage levels and the power factor of high-voltage side. Simulation model consisting of two main transformers with MCR at medium-voltage side and MSVC at low-voltage side based on Matlab/Simulink is established. And this simulation is compared with simulation of only installs MSVC in the low voltage side and only installs MCR in medium voltage side. Simulation results indicate the effectiveness in achieving qualified voltage at each side and general reactive power balance under different operating modes of the method of coordinately controlling medium and low voltage side.
出处
《电工技术学报》
EI
CSCD
北大核心
2015年第16期230-237,共8页
Transactions of China Electrotechnical Society
基金
国家自然科学基金(50807041)
亚太经合组织国际合作基金
湖北省科技支撑计划(2014BAA013)
中央高校基本科研业务费(2042015kf004
2042014kf0233)资助项目
关键词
磁控电抗器
无功补偿
电压无功综合控制
配合补偿
电能质量
Magnetically controlled reactor（MCR）, reactive power compensation, voltage/Var integrated control, coordinative compensation, power quality.
