长河坝水轮发电机选型计算与性能分析  

Selection calculation and performance analysis of hydrogenerator of Changheba Hydropower Station

作　　者：刘新天[1] 乔照威[1] LIU Xin-tian;QIAO Zhao-wei(Harbin Electric Machinery Company Limited,Harbin 150040,China)

机构地区：[1]哈尔滨电机厂有限责任公司,黑龙江哈尔滨150040

出　　处：《水电站机电技术》2019年第1期11-13,71,共4页Mechanical & Electrical Technique of Hydropower Station

摘　　要：长河坝水轮发电机额定出力为650 MW,额定转速142.9 r/min。本文通过对水轮发电机主要尺寸、支路数、定子槽数等进行分析,确定了水轮发电机电磁方案。在此基础上,分别从电压波形畸变系数、阻尼绕组稳态和瞬态特性、定子线棒换位、误同期并网、定子绕组端部电动力、短路电流等方面进行性能分析,论证水轮发电机设计方案的合理性与可靠性。机组运行结果表明,长河坝发电机的各项性能指标均优于国家标准。The hydrogenerator of the Changheba Hydropower Station has a rated output of 650 MW and a rated speed of 142.9 r/min.This paper analyzes the hydrogenerator in terms of main dimensions,number of branch and number of stator slot,and determines the electromagnetic scheme of hydrogenerator.On this basis,this paper further demonstrates the rationality and reliability of the hydrogenerator design scheme through performance analysis on voltage waveform distortion factor,steady-state and transient characteristics of damping winding,transposition of stator bar,out-of-phase synchronization,electrodynamic force at stator winding end and short-circuit current.The operation results of unit indicate that all performance indicators of generator of the Changheba Hydropower Station are superior to national standards.

关 键 词：水轮发电机 电压波形畸变 线棒换位 误同期 

分 类 号：TM312[电气工程—电机]