分布式电源接入对配电网稳态运行的影响

The Impact of Distributed Generation Access on Steady-State Operation of the Distribution Network

摘要: 传统能源的逐渐枯竭和环境污染的加重使得分布式电源的应用日益广泛。分布式电源的接入改变了配电网的网络结构，对配电网的稳态运行产生了一系列影响。本文研究分析了含分布式电源配电网的潮流计算，给出了各类型分布式电源的处理方法，并从分布式电源容量、接入位置、功率因数三个角度着手，详细研究了分布式电源接入对配电网稳态运行的电压和网损的影响。算例仿真结果表明，分布式电源容量不宜过大、接入位置宜选在馈线中后部、运行功率因数应尽可能高且为滞后，这些都有利于配电网的电压稳定和网损降低。

Abstract: The gradual depletion of traditional energy and aggravation of environmental pollution makes distributed generation applications increasingly widespread. Distributed generation access has changed the structure of the distribution network and caused a series of effects on steady-state operation of the distribution network. This paper analyzes the power flow calculation of the dis-tribution network including distributed generation and the treatments of various types of distri-buted generation are given. From three angles of capacity, access location and power factor, a de-tailed study about the impact of distributed generation access for distribution network voltage and network losses is implemented. Example simulation results show that the capacity of distributed generation shouldn’t be too large, access location should be selected in the center-rear of the feeder, power factor should be as high as possible and for the lag, which are conducive to the stability of distribution network voltage and reduce network losses.