Scientific Development Research

The grid-connection of distributed photovoltaic (PV) power generation systems has a significant impact on the voltage stability of distribution networks. With the rapid development of PV power generation technology, an increasing number of distributed PV systems are being connected to distribution networks. How to ensure that distribution networks can still maintain good voltage stability after grid-connection has become an urgent issue to be addressed. This paper analyzes the impact of the grid-connection of distributed PV systems on distribution network voltage and studies the effects of factors such as voltage fluctuations, inverter performance, and PV power fluctuations on voltage stability after the integration of PV systems. Through simulation analysis and comparison of actual data, targeted optimization measures are proposed. Reasonable scheduling strategies and power control technologies can effectively reduce the negative impact of PV grid-connection on voltage stability, thereby improving the voltage stability of distribution networks.

Distributed photovoltaic power generation; Distribution network; Voltage stability; Grid-connection impact; Power control