Abstract
With the continuous promotion of the "double carbon" strategy, the proportion of new energy power generation based on wind energy and solar energy is increasing. At the same time, it brings a series of power quality problems to the power grid. It is very important to study the causes of poor power quality caused by wind power and photovoltaic grid connection, and to formulate a scientific and reasonable comprehensive treatment plan for power quality. In this paper, the causes of grid harmonics, voltage fluctuation and flicker, voltage deviation, three-phase voltage imbalance and frequency deviation caused by the current wind power and photovoltaic grid connection are deeply studied. It is hoped to provide theoretical basis for the power system operators to take the optimal power quality prevention measures.
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