基于实机数据的水轮机全水头建模方法研究  

Research on Full Head Modeling Method of Turbine Based on Real Machine Data

作　　者：蔡卫江 丁钶铖祺 曹林宁[2] CAI Wei-jiang;DING Ke-cheng-qi;CAO Lin-ning(NARI Group Corporation/State Grid Electric Power Research Institute,Nanjing 211106,China;College of Energy and Electrical Engineering,Hohai University,Nanjing 210098,China)

机构地区：[1]南瑞集团有限公司(国网电力科学研究院),江苏南京211106 [2]河海大学能源与电气学院,江苏南京210098

出　　处：《水电能源科学》2023年第10期180-184,共5页Water Resources and Power

摘　　要：目前电力系统稳定计算采用的PSD-BPA平台TV卡模型不能反映多水头下机组的差异性,具体表现在动态响应速度和反调准确度上。因此,基于TV卡模型提出了改进方案,即利用电站前期运行数据,通过程序处理获取模型水头-开度-功率特性与功率-T_(w)特性,依次加入到改进模型中,在功率模式一次调频下与TV卡模型相对比,结果表明TV卡模型动态特性不具备多参数辨识的条件,且不同负荷下反调仿真精确度较差,而改进模型的响应特性符合实机运行规律,能容纳机组多水头的差异性。At present,the TV card model of PSD-PBA platform used in power system stability calculation cannot reflect the difference of units under multiple water heads,which is specifically reflected its dynamic response speed and anti-regulation accuracy.Based on the TV card model,an improved scheme is proposed.The water head-opening-power characteristics and power T_(w) characteristics of the model are obtained by program processing with the early operation data of the hydropower station,and then added to the improved model successively.The results show that the dynamic characteristics of the TV card model do not have the conditions for multi-parameter identification under the power mode primary frequency modulation.Moreover,the accuracy of anti-regulation under different loads is poor.The response characteristics of the improved model accord with the operation law of the real machine and can accommodate the difference of multiple water heads of the unit.

关 键 词：水轮机模型 反调 全水头 多参数辨识 水流惯性时间常数 

分 类 号：TK13[动力工程及工程热物理—热能工程] TV734.1[水利工程—水利水电工程]