ETAP在110kV终端变电站无功补偿配置上的应用

Application of ETAP in reactive power compensation configuration of 110kV terminal substation

基于电气分析计算软件ETAP,提出了一种对西北地区某110kV终端变电站的无功补偿方案。该方案通过一种新的变电站电压无功自动调节装置,采用电容器组固定接入,通过电压调节器来调节电容器两端电压,从而改变无功输出容量来调节系统功率因数,为110kV变电站系统动态补偿无功。通过ETAP对变电站建模仿真,计算变电站所需配置的无功补偿容量,根据计算结果最终确定无功补偿方案,将方案代入到模型中进行验证。结果表明,提出的方案可有效补偿电网无功功率,提高系统功率因数,降低电网损耗。

Based on ETAP,a reactive power compensation scheme for a 110kV terminal substation in northwest China is proposed.This scheme adjusts the power factor of the system by changing the reactive power output capacity through a new automatic regulation device for voltage and reactive power of the substation,which adopts the fixed access of capacitor bank and adjusts the voltage at both ends of the capacitor through the voltage regulator,and compensates the reactive power dynamically for the 110kV substation system.Through the modeling and simulation of the substation by ETAP,the reactive power compensation capacity required by the substation is calculated.The reactive power compensation scheme is finally determined according to the calculation results,and the scheme is substituted into the model for verification.The results show that the proposed scheme can effectively compensate the reactive power of the power grid,improve the power factor of the system and reduce the power loss of the power grid.