发电机参数对电力系统稳定性的影响及其工程校验  

Impact of Generator Parameters on Power System Stability and Their Engineering Verification Test

作　　者：刘露萍[1] 孙晓明[2] 

机构地区：[1]重庆水利电力职业技术学院电气工程系,重庆永川402160 [2]重庆文理学院电子电气工程系,重庆永川402160

出　　处：《西南大学学报（自然科学版）》2015年第12期146-155,共10页Journal of Southwest University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(50677046)

摘　　要：运用频域和时域仿真分析方法,通过小扰动和大扰动计算,分析了发电机参数对电力系统暂态稳定性及动态稳定性的影响.通过得到的数据列表和数据曲线,总结出直观实用的结论和规律:发电机的电抗和时间常数间存在固有的大小关系,暂态稳定性对次暂态电抗与暂态电抗的比值较敏感,各时间常数对动态稳定性有不同的效果.这些结论和规律可直接用于发电机参数合理性的工程校验,可快速发现发电机参数的错误或失配,避免得出危害电力系统安全稳定运行的分析结论.校验过程简单、高效,可提高生产一线工程技术人员的工作效率和工作质量.The impact of generator parameters on the transient stability and the dynamic stability of a power system is analyzed through the calculations of small disturbance and large disturbance,using the frequency domain and the time domain simulation methods.From the resulting data tables and data curves,some evident and applicable conclusions and rules are derived：there are intrinsic relationships between each generator reactance and each generator time constant;transient stability is sensitive to the ratio of subtransient reactance to transient reactance;different time constants have different effects on dynamic stability.These conclusions and rules can be directly applied to the engineering test of the feasibility of generator parameters so as to rapidly find out the error or mismatch of generator parameters and avoid unreasonable analysis conclusions and detrimental effects on the security and stability of the power system.The testing procedure is simple and effective,which promotes the working efficiency and working quality of the technicians in field.

关 键 词：发电机参数 暂态稳定性 动态稳定性 小扰动分析 PRONY分析 

分 类 号：TM743[电气工程—电力系统及自动化]