Abstract
China's distributed photovoltaic power generation projects will show blowout growth in recent years. The access of a large number of distributed photovoltaic will bring new challenges to the stability and power quality of the power grid. Starting from the operation characteristics of distributed photovoltaic, this paper analyzes the power quality emission characteristics of photovoltaic in detail and the impact of photovoltaic grid connection on the power quality of distribution network, such as harmonic, three-phase imbalance, voltage fluctuation and so on. Finally, the Countermeasures of the impact of distributed photovoltaic access on the power quality of distribution network are proposed from the perspective of supporting power grid planning, operation and management.
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