分布式电源接入配电网的影响及优化研究

The Influence and Optimization of Distributed Generation on Distribution Network

随着不可再生资源的日益枯竭及环境污染问题不断增加,引起了世界各国对环境保护和节能减排的高度重视,发展分布式电源已成为世界各国促进节能减排的一个重要手段。分布式电源接入配电网后,可对配电网中的峰谷差值进行调节、节约能源、节省投入,可为某些重要用户提供不间断供电。然而,由于分布式电源的加入,使得配电网原始结构发生改变,并对配电网系统产生影响。本文从配电网损耗、分布式电源维护及电压偏差3个方面考虑,通过建立相关数学模型并采用遗传算法,选取配电网33节点进行实验研究,以改善配电网电压质量,对配电网接入分布式电源起到一定的参考意义。

With the non-renewable energy resources exhausted and the increase of environmental pollutants,energy conservation and emission reduction has been attention by the world for environmental protection,distributed generation has become an important means to promote energy conservation and emission reduction in the world.DG is integrated into the distribution network system,which has several strengths such as adjusting the difference between peak and valley of grid,environment protect and energy saving,saving investment,and providing power supply for important loads.However,the structure of the distribution network has been changed by the access of the distributed generation and it has a series of effects on the distribution network status.Taking distribution network loss cost,distributed generation operation cost and voltage deviation,By establishing relevant mathematical models and using genetic algorithms,33 nodes in the distribution network are selected for experimental,which can improve the voltage quality of the distribution network.It has great significance for the distribution network to access distributed generation.