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基于MCR和MSVC的220kV变电站多电压等级无功电压综合控制

, PP. 230-237

Keywords: 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

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Abstract:

目前变电站的电压无功综合自动控制装置主要是针对110kV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220kV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。

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