Impact of grid-connection of distributed photovoltaic power generation systems on distribution network voltage stability
分布式光伏发电系统并网对配电网电压稳定的影响

摘要

分布式光伏发电系统的并网对配电网电压稳定性产生了重要影响。随着光伏发电技术的快速发展，越来越多的分布式光伏发电系统接入到配电网中，如何保证配电网在并网后依然能够保持良好的电压稳定性，成为了亟待解决的问题。本文分析了分布式光伏发电系统的并网对配电网电压的影响，研究了光伏发电系统接入后，电压波动、逆变器性能、光伏功率波动等因素对电压稳定性的作用。通过仿真分析和实际数据对比，提出了针对性的优化措施。合理的调度策略和功率控制技术可以有效减小光伏并网对电压稳定性的负面影响，从而提高配电网的电压稳定性。

Abstract

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.