分布式电源接入配网对其静态电压稳定性影响多角度研究

分布式电源(Distributed Generation, DG)接入配网后，将对配网静态电压稳定性造成影响。基于IEEE33节点配电网络和Matlab仿真测试软件平台，考虑分布式电源的接入数量、接入位置、接入容量和功率因数4个影响因素。应用电压稳定性判定指标L，对比单个DG接入单分支线路和多个DG接入多条分支线路两种情况，得出各自对配网电压分布和电压稳定性造成的影响。对比测试所得L指标，结果表明多DG接入的方式更有利于配网电压稳定。该研究对配网中多DG的布局和规划具有积极的指导意义。

Research of the impacts on static voltage stability of distribution networks with distributed generation from different aspects

Static voltage stability of distribution networks will be impacted after the connection of distributed generation (DG) sources. The IEEE 33-nodes test system and Matlab simulation software platform are used and four impacts factors including the number of DGs, their locations, access capacities and power factors are considered. Based on thevoltage stability assessment index L, two cases, which one is a single DG connected to single feeder bus and another is multiple DGs connected to multiple feeder buses, are compared to get their influence on voltage distribution and stability respectively. Compared index L from test, it shows that multiple DG connected to multiple feeder buses is more beneficial to voltage stability of distribution networks. The research is of guiding significance to the layout and planning of multi-DGs in distribution network.