大规模分布式光伏接入对城市配电网的影响

Impact of Large-Scale Distributed Photovoltaic Access on Urban Distribution Network

分布式光伏发电是城市电力能源碳减排的重要手段,但大规模分布式光伏接入会带来配电网双向潮流,造成配电网末端电压升高、短路电流增大以及谐波等电能质量问题。以上海城市电网典型网架作为案例,采用Digsilent Powerfactory仿真软件对大规模分布式光伏接入电网场景进行了分析,重点讨论了分布式光伏接入对电网潮流、节点电压、短路电流和电能质量的影响。

Distributed photovoltaic power generation is an important means of urban power energy carbon emission and reduction. However, the large-scale distributed photovoltaic access brings bidirectional power flow in the distribution network, which causes power quality problems such as increasing voltage at the end of the distribution network, increasing short-circuit current and harmonics. In the case of Shanghai urban grid, Digsi1 ent Powerfactory simulation software was used to analyze the scenario of large-scale distributed photovoltaic access, with a foucs on the influence of distributed photovoltaic access on power flow, node voltage, short-circuit current and power quality.