发电机励磁控制中负荷补偿对系统稳定性的影响  

Effect of Load Compensation in Excitation Control on System Stabilities

作　　者：程林[1] 孙元章[1] 贾宇[1] 吴琛[2] 李文云[2] 

机构地区：[1]电力系统国家重点实验室(清华大学电机系),北京市海淀区100084 [2]云南电网公司,云南省昆明市650011

出　　处：《中国电机工程学报》2007年第25期32-37,共6页Proceedings of the CSEE

摘　　要：为了探讨发电机励磁控制中负荷补偿对电力系统稳定性影响产生的机理,论文以单机无穷大系统为例,分析了负荷补偿对同步转矩以及阻尼转矩的影响,深入探讨了不同系统参数和运行状态下补偿系数与同步转矩和阻尼转矩的关系,从而研究了负荷补偿对电力系统稳定性的影响。研究表明,小负荷情况下负荷补偿对同步转矩和阻尼转矩的改善较小,重负荷情况下,负荷补偿对同步转矩改善明显,但会恶化阻尼。论文通过对单机无穷大系统的时域仿真,验证了理论分析的正确性。The effect of Load Compensation on system stability has been covered in some papers, but how it affects has not drawn enough attention. This paper details the effects of Load Compensation on synchronizing torque and damping torque of one-machine-infinite-bus system, especially the relationship between them under different system parameters and compensation coefficient. Theoretical analysis shows that the effects of Load Compensation on synchronizing torque and damping torque are slight if the load is small. And the Load Compensation improves the synchronizing torque distinctly while worsens the damping torque on heavy load condition. At last, step-by-step simulations on one-machine-infinite-bus prove their validity.

关 键 词：负荷补偿 高压侧电压控制 系统稳定性 同步转矩 阻尼转矩 暂态稳定性 

分 类 号：TM77[电气工程—电力系统及自动化]