基于PSASP短路计算的外网实用等值方法  

A practical equivalence method of power network based on short circuit calculation by power system analysis software package

作　　者：李明念 杨秀 Li Mingnian;Yang Xiu(School of Electrical Engineering,Shanghai University of Electric Power,Shanghai 200090,China)

机构地区：[1]上海电力学院电气工程学院,上海200090

出　　处：《电测与仪表》2018年第16期36-41,共6页Electrical Measurement & Instrumentation

基　　金：上海市地方能力建设基金资助项目(16020500900);上海市绿色能源并网工程技术项目(13DZ2251900)

摘　　要：当使用ATP-EMTP软件对大型区域电网的局部线路进行电磁暂态仿真时,受到仿真软件规模的限制,需要将区域电网划分为内部系统和外部系统,对外部系统进行等值简化。文中为简化原系统并保留原系统的短路电流特性,提出了一种基于电力系统分析综合程序(PSASP)短路计算的实用等值方法。采用该等值方法完成了西北电网2017年夏季大运行方式下的等值简化,并在ATP-EMTP软件中搭建了新疆乌鲁木齐简化电网的电磁暂态模型。通过比较等值前后系统的潮流分布和短路电流水平,验证了所提等值方法的正确性和可行性。To perform electromagnetic transient analysis on a part of a large-scale regional power network by ATP-EMTP,it is necessary to divide the regional power network into internal system and external system so as to make the external network simple for the restriction of software.To simplify the original system while retain its short circuit current characteristics,a practical equivalence method is proposed in this paper using the short circuit calculation by power system analysis software package(PSASP).The presented method is adopted to complete the equivalent simplification of northwest power network operating at the large mode of the summer 2017.And the electromagnetic transient model of the simplified network of Ummqi city is established in ATP-EMTP.By comparing the power flow and the short circuit level in the network before and after the equivalence,the proposed method is proved to be correct and feasible.

关 键 词：电力系统分析综合程序 短路电流计算 实用等值 电磁暂态分析程序 

分 类 号：TM74[电气工程—电力系统及自动化]