配电网中分布式电源选址定容研究

The Sitting and Sizing of Distributed Generation in Distribution Network

分布式电源是安装在系统负荷附近的小型发电机组,合理设置分布式电源的位置和容量对电力系统优化运行具有重要意义。将分布式电源视为PQ节点,首先利用电压灵敏度方法确定其最优位置,然后通过遗传算法(GA)确定其容量,以达到整个系统损耗最小的目的。最后为验证所提策略的有效性,以IEEE-33节点径向配电网系统为例进行仿真研究。结果表明,当所有的母线电压保持在适当范围内时,分布式电源(DG)的优化配置对网络损耗最小化起到重要作用。

Distributed generation is a small generating units and located close to the load,a reasonable set of distributed power position and capacity is important for the power system optimizing operation.DG are modeled as PQ bus.Firstly,the optimal location is determine by the method of voltage sensitivity,then determine its capacity by genetic algorithm（ GA）,In order to achieve the purpose of the whole system loss is minimized.Finally,in order to verify the effectiveness of the proposed strategy,IEEE-33 nodes with radial distribution network system as an example simulation.The results show,when all of the bus voltage is maintained within an appropriate range,Distributed power（ DG） optimized configuration of the network plays an important role in minimizing the loss.