Provision of reactive power compensation device for photovoltaic power plant can improve photovoltaic transmission capacity and system stability and prevent voltage collapse. The most common reactive compensation device in present power system is SVG. In this paper

the operating principle and system constitution of the SVG is studied deeply

the theoretical analysis and calculation on the reactive power compensation range

compensation position and capacity of photovoltaic power plant are analyzed and calculated. Finally

the reactive power allocation scheme of a large photovoltaic power plant connected by a special line as an example is proposed. And the study result plays an instructive role for the engineering design of photovoltaic power plant and the study of reactive power compensation technology.