户用光伏接入对配电网电压影响及优化研究

户用光伏的随机性和波动性是制约网络消纳的关键因素,高比例的户用光伏并网将影响区域网络的静态电压稳定。文章通过户用光伏系统分析,研究了户用光伏接入对配电网电压波动的影响;并提出基于遗传算法的含户用光伏配电网无功优化方法;最后,利用IEEE33节点配电网模型,针对不同渗透率下户用光伏接入配电网进行仿真实验,验证了所提含户用光伏配电网无功优化方法的可行性与准确性,可有效解决配电网电压波动问题。

Influence and optimization of household photovoltaic on distribution network voltage

The randomness and volatility of household photovoltaic have become the key factors restricting network consumption.The high proportion of household photovoltaic grid-connected affects the static voltage stability of the regional network.The impact of household photovoltaic access on the voltage fluctuations of the distribution network is studied in this paper by analyzing the household photovoltaic system.A genetic algorithm-based reactive power optimization method for photovoltaic power distribution networks is proposed.Finally,the IEEE33 node distribution network model is used to simulate the household photovoltaic access to the distribution network under different penetration rates.The feasibility and accuracy of the proposed reactive power optimization method for household photovoltaic distribution networks has been verified,which can effectively solve the problem of voltage fluctuations in distribution networks.