电力系统自动化
電力繫統自動化
전력계통자동화
AUTOMATION OF ELECTRIC POWER SYSTEMS
2012年
16期
115-117
,共3页
电力系统稳定性%水轮机%调节系统%自定义模型
電力繫統穩定性%水輪機%調節繫統%自定義模型
전력계통은정성%수륜궤%조절계통%자정의모형
power system stability%hydro-turbine%regulating system%custom model
针对电力系统稳定性分析工具BPA4.0程序提供的水轮机调节系统模型仿真精度不高的缺点,提出了自定义的水轮机调节系统模型,由比例一积分微分(PID)型调节器加二阶随动系统构成调速器模型,用非线性高阶传递函数表示原动机模型,并开发了改进的最小二乘算法、遗传算法和粒子群优化算法3种原动机模型辨识方法。仿真结果表明,自定义模型的仿真结果较BPA4.0中的模型更接近实际,仿真指标满足电力系统稳定分析的需求。
針對電力繫統穩定性分析工具BPA4.0程序提供的水輪機調節繫統模型倣真精度不高的缺點,提齣瞭自定義的水輪機調節繫統模型,由比例一積分微分(PID)型調節器加二階隨動繫統構成調速器模型,用非線性高階傳遞函數錶示原動機模型,併開髮瞭改進的最小二乘算法、遺傳算法和粒子群優化算法3種原動機模型辨識方法。倣真結果錶明,自定義模型的倣真結果較BPA4.0中的模型更接近實際,倣真指標滿足電力繫統穩定分析的需求。
침대전력계통은정성분석공구BPA4.0정서제공적수륜궤조절계통모형방진정도불고적결점,제출료자정의적수륜궤조절계통모형,유비례일적분미분(PID)형조절기가이계수동계통구성조속기모형,용비선성고계전체함수표시원동궤모형,병개발료개진적최소이승산법、유전산법화입자군우화산법3충원동궤모형변식방법。방진결과표명,자정의모형적방진결과교BPA4.0중적모형경접근실제,방진지표만족전력계통은정분석적수구。
In order to further improve the stability analysis of a power system, a model for the turbine governing system is developed with the realistic governor model and the prime mover model is expressed as a higher order nonlinear transfer function. Three kinds of prime mover model identifying methods are built, namely, the improved least squares (LS) algorithm, genetic algorithm (GA) and particle swarm optimization (PSO) algorithm. Compared with the measured dynamic process, the simulation results of the custom model is more realistic than the model provided by BPA4.0 and capable of meeting the demand for power system stability analysis.