分布式光伏接入对西宁配电网电压的影响研究

Research on the Voltage Influence of Distributed Photovoltaic Access to Xining Distribution Network

通过理论分析分布式光伏接入对配电网电压的影响机理,得出分布式光伏接入配电网可提高配电网整体电压水平,且不同接入位置和容量对电压的影响也不尽相同。并针对西宁城区典型分布式光伏接入方案在DIg SILENT平台上搭建仿真模型,仿真结果表明:分布式光伏接入只对接入点所在馈线电压偏差有影响,且电压偏差与接入配电网的分布式光伏容量有关,容量越大影响越明显。仿真结果验证了理论分析的正确性,对指导西宁城区分布式光伏接入提供有效参考。

Through theoretical analysis about the voltage influence mechanism of distributed photovoltaic access to distribution network,it was concluded that distributed photovoltaic access to distribution network can improve the overall voltage level of distribution network,and the voltage impact of different access locations and capacities was not exhausted.The simulation model was built on the DIg SILENT platform for the typical distributed photovoltaic access scheme in Xining City.The simulation results show that the distributed photovoltaic access only affects the feeder voltage deviation of the access point,and the voltage deviation was related about the distributed photovoltaic capacity,and the greater the capacity,the more obvious the impact.The simulation results verify the correctness of the theoretical analysis and provide an effective reference for guiding distributed photovoltaic access in Xining City.