文档介绍：第 36 卷第 1 期电网技术 Vol. 36 No. 1 2012 年 1 月 Power System Technology Jan. 2012 文章编号: 1000-3673 ( 2012 ) 01-0102-06 中图分类号: TM 712 文献标志码: A 学科代码: 470·4054 系统惯性时间常数对互联电网暂态稳定水平的影响赵振元,陈维荣,戴朝华,张雪霞(西南交通大学电气工程学院,四川省成都市 610031 ) Influence of System Inertia Time Constants on Transient Stability Level of Interconnected AC Power Grid ZHAO Zhenyuan, CHEN Weirong, DAI Chaohua, ZHANG Xuexia (School of Electrical Engineering, Southwest Jiaot ong University, Chengdu 610031, Sichuan Province, China) ABSTRACT: Due to the interconnection of regional power grids, the inertia time constant of the whole interconnected grid evidently changes, then transient stability level of the interconnected power grid will be influenced. Based on transient energy function, by means of mathematical deduce for equivalent two-machine system and analysis on its transient stability, the influences of unit inertial changes at both terminals on transient stability level of the whole system under various operation modes are researched, and respective influences of terminal unit inertial changes on transient stability of the whole grid pared, besides, it is found that the influences of unit in ertial time constants on system transient stability level are relevant to