输电线数字实时仿真模型简析  

PITHY ANALYSIS OF REAL-TIME SIMULATION MODELS FOR TRANSMISSION LINES

作　　者：李先彬[1] 张惠忠[1] 诸孝国 

机构地区：[1]华北电力大学(北京),安徽电力职工大学,华能公司自控所

出　　处：《现代电力》1996年第3期13-20,共8页Modern Electric Power

摘　　要：以无穷长输电线的电压衰减率和有限长线路末端开路的频率特性的准确解为依据，从实时仿真的基本要求出发，实现了在同一个暂态特性指标的平台上，对现有三种输电线模型Ｔ型、Ⅱ型及ＥＭＴＰ型进行了动态过程仿真特性的分析与比较。从理论上说明了输电线没有对其波传播过程、动态及稳态过程都能完美仿真的统一模型。现因目的不同而选用不同的模型。从伴随电力系统长期运行，以可能达到实时控制的观点看，Ｔ模型在频率方面虽有失真但失真度较易控制，仍不失为一种可用的线路实时仿真模型。This paper pithily analyzes and compares the real-time simulation performancesfor three popular transmission lines models: T-form, II-form, and the late EMTP-form.The analysis and comparsion are carried out on the basis the transient solution of thetransmission lines voltage attenuation for infinite leagth lines and the frequency spectrumat the opened end of finite length lines. It is theoretically explained that which modelshould be picked up depends on the task of the simulation, since for the three popular models, no one might conprehensively simulate the traveling, dynamic and steady-state processof real transmission lines perfectly. From the consideration of the implementing real--timecontrol of power systems, the T-model may, after all, be accepted as a comparatively available one, since its frequency simulation distortion can be easily controlled.

关 键 词：输电线路 数字仿真 实时仿真 模型 

分 类 号：TM743[电气工程—电力系统及自动化]