10 kV电容器多分组投切方案的应用

Application of 10 kV Capacitor Multi-Group Switching Scheme

变电站无功需求受负荷波动变化影响较大,而主变配置并联电容器装置分组较少,单组容量大,存在不投欠补过大、投入过补过大的问题,不能实现无功就地平衡与降低损耗。对变电站改造前情况进行了分析,通过对35、110 kV变电站负荷和无功需求波动数据分析,制定出并联电容器装置以多分组自动投切的解决方案,解决了无功补偿不充分、功率因数较低的问题。

The reactive power demand of a transformer substation is greatly affected by load fluctuation changes,while the shunt capacitor device configured with the main transformer has fewer groups and each group has larger capacity,so whether the input of reactive power compensation or not cannot achieve reactive power on-site balance and reduce loss.After analyzing the substation before transformation,the paper,based on the analysis of load and reactive power demand fluctuation data of the 35、110 kV substation,develops a solution of multigroup auto-switching of the shunt capacitor device,settling matters of inadequate reactive power compensation and lower power factor.