摘要
光伏电站采用了电力电子变流器,运行时会产生谐波注入电网,谐波会对电力系统中电气设备造成一定危害影响。作为接入公用电网的供电电源,光伏电站一般采取安装静止无功发生器(Static Var Generator,SVG)来增加无功调节能力,补偿无功损耗。通过研究安装SVG后对光伏电站注入电网的谐波影响,结果表明安装20%~30%光伏电站装机容量的SVG装置滤波效果最好,可以使光伏电站并网点谐波电压含有率下降约55%,谐波电流含有率下降约13%。
Photovoltaic power plants use power electronic converters,which will generate harmonics and inject them into the power grid during operation.The harmonics will cause certain harm to the electrical equipment in the power system.As a power supply connected to the public power grid,photovoltaic power plants generally install a Static Var Generator(SVG)to increase the reactive power regulation capability and compensate for reactive power losses.By studying the influence of harmonics injected into the grid by the photovoltaic power station after the installation of SVG,the results show that the SVG device installed with 20%to 30%of the installed capacity of the photovoltaic power station has the best filtering effect,which can reduce the harmonic voltage content rate at the grid-connected point of the photovoltaic power station by about 55%,the harmonic current content rate decreased by about 13%.
作者
陈旭
CHEN Xu(Power China Hubei Electric Engineering Co.,Ltd.,Wuhan 430040,China)
出处
《通信电源技术》
2022年第12期29-31,共3页
Telecom Power Technology
作者简介
陈旭(1990-),男,湖北武汉人,硕士研究生,工程师,主要研究方向为电力系统规划与设计。
