Abstract
Photovoltaic power generation is the most significant way to utilize solar energy in the world today. Facing the severe fossil energy crisis and environmental crisis facing the world today, photovoltaic power generation has obvious advantages from the perspective of resource sustainability and environmental friendliness. The access of distributed photovoltaic power sources will change the power flow distribution in the distribution network. If the grid-connected load of photovoltaic access is light, the photovoltaic capacity is large. After the photovoltaic is connected, the distribution network will become a multi-source network, and the photovoltaic output will be large. During this period, the line is prone to reverse current flow, which increases the line voltage and affects the power quality of the distribution network. Thence, it is essential to consider adopting strategies to control the voltage of the distribution network to ensure the safe and steady operation of the distribution network.
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