描述发电机暂态不稳定性的一种新指标  

A NEW INDEX FOR INDICATING TRANSIENT UNSTABLE DEGREE OF GENERATORS IN POWER SYSTEMS

作　　者：穆钢[1] 黎平[1] 蔡国伟[1] 

机构地区：[1]东北电力学院电力工程系

出　　处：《电力系统自动化》1995年第9期16-20,25,共6页Automation of Electric Power Systems

基　　金：国家自然科学基金

摘　　要：在用数值仿真法分析电力系统的机电暂态过程时，通常难以定量地评价各发电机的稳定或不稳定程度。论文在轨迹分析方法已有工作的基础上，提出了一种新的不稳定指标，用以定量描述发电机的不稳定程度。算例表明该指标是有效的，并较以往指标有更好的性能。It is commonly difficult to quantitatively evaluate the transient stability of generatorsby using the numerical simulation program.If a specified fault is so serious that some generatorslose their stability,the unstable degree is hardly to be evaluated.On the basis of the TrajectoryAnalysis Method.a new instability index is proposed in this paper. it is used to describe theunstable degree of generators.The examples show that the index is valid and better than theformer index.

关 键 词：电力系统 暂态稳定 不稳定指标 

分 类 号：TM310.13[电气工程—电机]