Abstract—This paper analyzes impacts of grid-connected photovoltaic power plant on the harmonic current in the power quality aspect of distribution network, Summaries the requirement of harmonic current injecting in grid caused by photovoltaic power plant which connected in user side. Based on the DIgSILENT PowerFactory simulation platform, this paper simulates harmonic current injecting into grid in one case of grid-connected photovoltaic generation and then analyzes it by build models of photovoltaic generation and power grid belonged the user. The result illustrated that the harmonic current caused by user side grid connected photovoltaic generation injecting into grid satisfies standards requirements, the photovoltaic generation system should have 400kvar reactive power regulation capability.

Index Terms—Distributed generation, photovoltaic generation, power quality.

Zhou Chang and Shi Tao are with the China Electric Power Research Institute, Nanjing, Jangsu 210003 PRC (e-mail: zhouchang@ epri.sgcc.com.cn, shitao@ epri.sgcc.com.cn).