摘要
简述了发电机组转动惯量、惯性时间常数和飞轮转矩的物理定义及其对电力系统稳定分析计算的作用和影响。分析推理了PSASP、PSD-BPA和PSS/E发电机模型中采用的惯量参数及相互之间的转换计算方法。从小干扰稳定分析的数学模型出发,推导了发电机组机械惯性参数与本机振荡频率的关系,并在此基础上将现场甩负荷试验和仿真计算相结合,提出了一种基于发电机负载电压阶跃试验的转动惯量仿真辨识方法。最后,基于一台600 MW汽轮发电机组为实际计算范例验证了该方法的有效性和适用性。
This paper introduces definition and relationship of moment of inertia, inertia time constant and flywheel moment, and their effect on the analysis of power system stability. The conversion among these parameters is analyzed and summarized for different simulation software including PSASP, PSD-BPA and PSS/E. Mathematical relationship between generator mechanical inertia parameters and local oscillation frequency is derived from small signal stability model. An identification method of moment of inertia combining with generator load voltage step test and simulation is proposed. Finally, effectiveness and applicability of proposed method is verified by comparing parameter calculation and load rejection test data on an actual 600 MW steam turbine-generator.
出处
《中国电力》
CSCD
北大核心
2016年第2期21-25,60,共6页
Electric Power
关键词
发电机组
转动惯量
惯性时间常数
飞轮转矩
系统稳定
仿真
辨识
generator
moment of inertia
inertia time constant
flywheel moment
power system stability
simulation
identification
