摘要
研究机电扰动在均匀离散的链式电力系统中的传播规律。通过Laplace和Z联合变换,用Bessel函数表示出机电扰动在均匀离散系统中的变化特征,得出扰动的增衰规律与连续体模型中机电波的增衰规律完全相同,而且离散系统中扰动传播到每一条母线所需要的时间与连续体模型中机电波传播到相应母线所需时间也完全相等。最后用一个由64台发电机组成的环形离散仿真系统,证实用离散模型和连续体模型描述电力系统中机电扰动传播的合理性和正确性。
It is presented that the laws of electromechanical disturbance propagation in a discrete uniform chain power system. Through the Laplace and Z transformations, it represents the varying features of electromechanical disturbance in a uniform chain network using the family of Bessel functions; the growing or attenuating laws are the same as that of electromechanical wave in a continuum model along the corresponding transmission media. Furthermore, the time of electromechanical disturbance arriving at any bus in the discrete model is also the same as that of electromechanical wave arriving at the corresponding bus in the continuum model. Finally, the simulation based on a 64 generators ring system validates the rationality and correctness of both the discrete and continuum models describing electromechanical disturbance propagation in the power systems.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2007年第19期18-24,共7页
Proceedings of the CSEE
基金
国家自然科学基金项目(90610026
50595411)
四川省应用基础研究项目(2006J13-111)~~
关键词
电力系统
机电扰动
传播特性
LAPLACE变换
Bessel函数族
power system
electromechanical disturbance
propagation characteristics
Laplace transformation
family ofbessel functions
