基于网络等效变换的配电网负荷不对称运行  

Calculation of the Asymmetric Distribution Network Load Based on Network Equivalent Transformation

作　　者：许高明 郑艺文 覃曦 杨家兴 莫仕勋[1] ZHENG Yiwen;QIN Xi;YANG Jiaxing;MO Shixun(College of Electrical Engineering,Guangxi University,Nanning 530004,China)

机构地区：[1]广西大学电气工程学院,广西南宁530004

出　　处：《吉首大学学报（自然科学版）》2018年第6期39-45,共7页Journal of Jishou University(Natural Sciences Edition)

摘　　要：提出了一种网络结构等效变换方法,该方法主要将电力网络中三相参数不对称部分等效变换成带有某种故障的三相参数对称网络,且新增故障端口外电路的三相参数是对称的,从而满足对称分量法的使用条件,充分发挥对称分量法结构简单、计算进度快的优势.针对几种负荷不对称的配电网搭建仿真平台并进行了仿真实验,实验结果验证了该方法的准确性与可行性.Aiming at the problem that the traditional symmetric component method can't be applied in power system fault analysis and calculation because of the asymmetry of the three-phase load in the distribution network,a network equivalent Transformation method is proposed,which makes the original three-phase load asymmetric network satisfy the conditions of the symmetrical component method.This method mainly transforms the three-phase parameter asymmetry part of the power network equivalently into a three-phase parameter symmetric network structure with a certain fault.The three-phase parameters of the circuit outside the newly added fault port symmetrically satisfy the conditions of use of the symmetrical component method.This method takes advantage of the simple structure and quick calculation of the symmetrical component method.We build a simulation platform for several load asymmetry scenarios and compare it with the calculation results of this method to verify its accuracy and feasibility.

关 键 词：配电网 负荷不对称 等效变换 对称分量法 

分 类 号：TM711[电气工程—电力系统及自动化]