用先进的动态电气制动提高电力系统稳定性

IMPROVE POWER SYSTEM STABILITY BY ADVANCED DYNAMIC BRAKING

利用现代电力电子技术构成先进的动态电气制动是一种提高电力系统暂态稳定性的最直接、有效的方法。本文在相平面分析的基础上，提出了两种基于发电机转速差Δω的控制策略。对于系统发生大扰动和小扰动情况，进行了仿真计算，结果表明这种方法能够显著提高系统的送电能力，并能有效地平抑系统振荡。

On the basis of modern power electronic technique the Advanced Dynamic Braking (ADB) is the most direct and effective method to enhance power systern transient stability. With respect to system conditions of large disturbance and small disturbance,this paper presents two controlling strategies according to geherator speed deviation (Δω).The results from phase plane analysis and simulating computation show that the ADB can enhance system wheeling ability evidently and damp system oscillation effectively.