| 引用本文: | 张仰飞,袁越,陈小虎,郝思鹏.汽轮发电机组的调速系统参数辨识[J].电力自动化设备,2006,(12):32-35 |
| .Speed-adjustable system parameter identification for steam turbine-generator unit[J].Electric Power Automation Equipment,2006,(12):32-35 |
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| 摘要: |
| 调速系统是汽轮发电机组的重要组成部分,对其进行准确建模,有利于提高汽轮发电机组的运行和控制水平。分析汽轮发电机组典型的调速系统,确定其模型结构和需要辨识的具体参数,进行调速系统参数可辨识性理论研究。得出在该模型下,通过设置合适的观测点,可唯一辨识调速系统量测环节的放大倍数、伺服机构时间常数、蒸汽容积效应的时间常数等参数。算例表明,利用可控量电磁转矩作为输入、可观量转子转速和汽门开度作为输出,以误差平方和倒数为目标函数,采用进化策略法进行参数辨识,能有效地辨识出调速系统的参数,并且具有唯一性。 |
| 关键词: 汽轮发电机组,调速系统,参数辨识 |
| DOI： |
| 分类号:TM331 |
| 基金项目: |
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| Speed-adjustable system parameter identification for steam turbine-generator unit |
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ZHANG Yang-fei YUAN Yue CHEN Xiao-hu HAO Si-peng
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| Abstract: |
| The speed-adjustable system is an important part of the steam turbine generator unit,and its accurate modeling can enhance the operating and control level of the unit.Based on the analysis of typical speed-adjustable system of the steam turbine generator unit,its model frame and parameters to be identified are determined in its identifiability research.The conclusion shows that its parameters can be uniquely identified by setting proper observation points for the model,including the measure unit gain,the servo mechanism time constant,the steam volume effect time constant,etc..Controllable variable electromagnetism torque is used as the input,and the observable variables rotor rotate speed and steam gate value are chosen as outputs.Taking the reciprocal of error square sum as the objective function,parameters are identified using the evolutionary strategy method and system parameters in the model are thus all determined.An example validates its effectiveness and uniqueness. |
| Key words: steam turbine-generator unit,speed-adjustable system,parameter identification |
