摘要
采用增量法求解故障时和故障切除时对电力系统的扰动量,定性分析电磁功率变化对机组转矩及系统稳定性的影响,并构造两区域系统故障后李雅谱诺夫能量函数(Lyapunov EnergyFunction,LEF).结合发电机转子方程推导出了与功角及转速变化量有关的稳定判据.基于同步相量测量单元(Phasor Measurement Units,PMU)构建了四机两区域系统仿真模型.仿真结果证明了理论的正确性.
Augmentation method is apphed to get the disturbances of power system during or post fault. Qualita- tive analysis is adopted to study the effect of generator torque and power system stability on the change of electro- magnetic power. Lyapunov energy function （LEF） of post - fault is constructed in two - area system. Stability criterion relative to power- angle and rate- of- change speed is also inferred considering generator rotor equa- tions. A two - area system MATLAB model is created based on phasor measurement units （PMU）. The correct- ness of the theory analysis is verified by simulation results.
出处
《昆明理工大学学报（自然科学版）》
CAS
北大核心
2012年第3期41-44,49,共5页
Journal of Kunming University of Science and Technology(Natural Science)
基金
国家自然科学基金项目(51007034)
云南省自然科学基金(2010CD023)
昆明理工大学人才引培项目(2011-03)
昆明理工大学2012年创新基金(2012YC084)
