高压汽室蒸汽容积环节模型参数对再热凝汽式汽轮机调速系统仿真校验的影响  

Influence of High Pressure Cylinder Steam Volume Link Model Parameters on the Speed Governing System Simulation and Calibration for Reheat Condensing Turbine

作　　者：盛锴[1] 

机构地区：[1]湖南省电力公司科学研究院,长沙410007

出　　处：《华东电力》2012年第11期2049-2053,共5页East China Electric Power

摘　　要：对某火电厂汽轮发电机组进行调速系统参数测试,利用电力系统综合分析程序(PSASP),对此机组调速系统参数测试的结果进行仿真校验。仿真计算中功率响应过程与现场试验结果差别较大。分析此现象发现:调速系统模型的汽轮机子模型中的高压汽室蒸汽容积环节对机组功率响应过程的初期有较大影响。由于采样环节延迟及自身特性从而影响高压蒸汽容积时间常数辨识结果,最终造成仿真计算与试验结果存在较大误差。针对此现象,对原模型参数进行修改优化,优化后的模型能够较好反映实际功率响应过程,从而满足电力系统稳定性仿真分析的需要。The parameters of speed governing system in turbo-generator unit were tested in a thermal power plant, and the tested results were simulated and calibrated by use of Power System Analysis Software Package（PSASP） , finding that the power response process in the simulation deviated greatly from on-site tested results. In-depth analysis reveals that the power response process was evidently affected by the high pressure cylinder steam volume link in the submodel of steam turbine at the initial phase. The sampling delay and its inherent characteristics affected the time constant recognition of high pressure steam volume, consequently the large deviation between simulation calculation and tested results. Therefore, the original model parameters are modified, and the optimized model can reflect the actual power response process more accurately. The improved model could meet the needs of power system stability simulation analysis.

关 键 词：汽轮发电机组 高压汽室蒸汽容积环节 电力系统综合分析 

分 类 号：TM31[电气工程—电机]