基于分群解耦的电力系统机电电磁混合仿真的分网技术  

Power System Tearing Technology for EMT-TS Hybrid Simulation Based on Group Decoupled Interface Division

作　　者：穆清 程昱 王春明 汪旸 严剑峰 徐得超 庞润甜 MU Qing;CHENG Yu;WANG Chunming;WANG Chang;YAN Jianfeng;XU Dechao;PANG Runtian(State Key Laboratory of Power Grid Security and Energy Conservation(China Electric Power Research Institute),Haidian District,Beijing 100192,China;Central China Branch of State Grid,Wuhan 430014,Hubei Province,China)

机构地区：[1]电网安全与节能国家重点实验室(中国电力科学研究院有限公司),北京市海淀区100192 [2]国家电网有限公司华中分部,湖北省武汉市430014

出　　处：《现代电力》2021年第4期355-361,共7页Modern Electric Power

基　　金：国家重点研发计划资助项目(2018YFB0904503)资助本项目。

摘　　要：多条耦合直流输电的响应只能通过电磁暂态仿真程序模拟。为了提高仿真精度,机电-电磁混合仿真已用于电力系统运行的研究。为解决目前机电-电磁混合仿真速度太慢的问题,提出了一种电力系统混合仿真分网技术。首先把机电网络分成尽可能多的网络孤岛,把电磁暂态网络通过传输线解耦方式分网,然后基于分群解耦的机电-电磁混合仿真算法形成单时步内解耦的机电-电磁子网群。继而又提出一种新的并行程序结构,利用机电-电磁子网群实现并行仿真,加快仿真速度。最后对含有7条直流输电和4000个节点的电磁网络的国调方式计算案例进行的研究表明,该方法可以在不降低精度的情况下大大提高仿真速度。The response for multiple coupled HVDCs can only be simulated through EMT programs.To increase the simulation accuracy,the EMT-TS Hybrid simulation has been used in studies of the power system operation.Currently,the EMT-TS hybrid simulation speed is too slow.This paper presents a novel power system tearing technology to greatly improve the simulation speed in EMT-ST network islands as many as possible,while the EMT network is teared through the combined transmission line.An algorithm is supposed to form the EMT-ST subnetwork groups,which has no coupling with each other.And the ST-EMT subnet group decoupled in a single time step base on this algorithm.Then an novel parallel program structure is proposed to use this EMT-ST subnetwork groups to realize the parallel simulation and speedup the simulation.The case studies of the grids with 7 HVDCs and 4000 nodes show that the proposed method could greatly improve the simulation speed without lowering precision.

关 键 词：电力系统仿真 并行计算 机电-电磁暂态混合仿真技术 电力系统分网技术 电力系统方式计算 

分 类 号：TM73[电气工程—电力系统及自动化]