一种含分布式电源的配电网距离保护

The Utility Model Relates to a Distribution Network Distance Protection with Distributed Power Supply

随着现代社会对能源和环境的要求不断提高,分布式能源(DG)作为对大电网的补充能源在我国发展迅速.而分布式能源的接入使得传统的配电网络变得更加复杂,因此对配电网的继电保护也提出了更高的要求.因此,由DG接入对配电网的影响导出附加电阻,继而设计了一种多边形自适应距离保护方式,并求出了其动作方程.

With the increasing demands of modern society for energy and environment,distributed energy(DG)as a supplementary energy to large power grid,is developing rapidly in China.The access of these distributed energy sources makes the traditional distribution network more complex,so the relay protection of the distribution network also puts forward higher requirements.In this paper,first of all,the influence of DG access on distribution network is derived,then an additional resistance is derived,then a polygon adaptive distance protection method is designed,and its action equation is obtained.