分布式光伏并网后功率因数变化分析及光伏对电网的影响

Analysis of power factor changes after grid-connection of distributed photovoltaics and impact of photovoltaics on the power grid

低压并网工商业分布式光伏发电项目投资成本逐步降低,越来越多的企业开始投资光伏电站。分布式光伏并网后注入有功电流会导致原来电力系统的计量电能表的功率因数发生变化,许多企业在光伏发电高峰期间出现功率因数不合格情况。分析研究光伏低压并网对计量电能表功率因数变化及对电网的影响。

The investment cost of low-voltage grid-connected industrial and commercial distributed photovoltaic power generation projects is gradually decreasing,and more and more enterprises are investing in photovoltaic power stations.Injecting active current after distributed photovoltaic grid connection can cause changes in the power factor of the original power systems metering meters,and many enterprises experience power factor non-compliance during peak periods of photovoltaic power generation.This thesis analyzes and studies the changes in power factors of photovoltaic low-voltage grid connection on metering meters and their impact on the power grid.