光伏电站超配情况下无功补偿的配置分析

Configuration Analysis of Reactive Power Compensation in Case of Over Allocation of Photovoltaic Power Station

在光伏电站的设计中,因为光伏电站的特殊性,需要配置无功补偿。按照以往的方法,通常按照直流容量的比例来确定容量。但在目前超配的情况下,按照直流容量来确定无功补偿的容量是不太合理的。本文介绍了光伏电站内消耗无功的主要电气设备和消耗无功的计算方法。并以实际项目为例,对比两种方法配置的无功补偿容量。通过对比,证明了在超配情况下,按照直流容量的比例来确定无功补偿的容量是不经济和合理的,应按照电气设备的实际消耗来确定。

In the design of photovoltaic station,due to the particularity of photovoltaic power station,reactive power compensation needs to be configured.According to the previous methods,the capacity is usually determined according to the proportion of DC capacity.However,in the current case of over allocation,it is unreasonable to determine the capacity of reactive power compensation according to the DC capacity.This paper introduces the main electrical equipment consuming reactive power in photovoltaic power station and the calculation method of reactive power consumption.Taking an actual project as an example,the reactive power compensation capacity configured by the two methods is compared.Through comparison,it is proved that it is uneconomical and reasonable to determine the capacity of reactive power compensation according to the proportion of DC capacity in the case of over allocation,which should be determined according to the actual consumption of electrical equipment.