分布式电源的接入对配电网产生的影响分析研究

Analyzing the Impact of Distributed Power Supply on Distribution Grids

介绍了分布式电源的概念与分类,接着探讨了对于该分析的算法选取,包括牛顿-拉夫逊法潮流计算方法以及支路类潮流计算方法,分析了分布式电源接入配电网的影响机制,包括分布式电源对线路电压分布情况的研究。最终,通过对仿真结果的分析得出,当分布式电源接入配电网络时,需根据网络模型,考虑分布式电源在网络的接入点,增强对对配电网电压支撑作用,以达到改善线路电压分布情况的目的。

The purpose of this study is to analyze the impacts of distributed generation(DG)on the distribution network,and to simulate the model of DG access to the distribution network by writing a simulation program in Matlab,and to explore and analyze the steady-state impacts of DG in this way.Firstly,the concept and classification of distributed power supply are introduced,and then the algorithms selected for this analysis are discussed,including the Newton-Raphson method of tidal current calculation and the branch-circuit type tidal current calculation method.Then,the impact mechanism of distributed power supply access to the distribution network is analyzed,including the study of distributed power supply on line voltage distribution.Finally,it is concluded through the analysis of the simulation results that,when the distributed power supply is connected to the distribution network,it is necessary to consider the access point of the distributed power supply in the network according to the network model to enhance the voltage support effect on the distribution network,so as to achieve the purpose of improving the line voltage distribution.