变速恒频技术在混流式水轮发电机组中的应用研究  

Application of Variable Speed Constant Frequency Technology in Francis Turbine Generator Set

作　　者：李娜 张治宇 Li Na;Zhang Zhi-yu

机构地区：[1]北京中水科水电科技开发有限公司,北京100038

出　　处：《电力系统装备》2021年第21期170-171,共2页Electric Power System Equipment

摘　　要：本文主要研究变速恒频技术在混流式水轮发电机组中的应用,包括全功率变频器技术(简称FSFC)和双馈感应电机技术(简称DFIM)。在对变速混流式水轮发电机组暂态特性进行研究时发现,通过设置虚拟惯性,变速机组可以对电网中的突变产生更快的响应。对于变速混流式水轮发电机组而言,在一次调频功率调整过程中,调速器以机组转速为主控目标、导叶开度为辅控目标,有功功率的调节控制由变频器执行。This paper mainly studies the application of variable speed constant frequency technology in Francis turbine generator set,including full power frequency converter technology(FSFC)and doubly fed induction motor technology(DFIM)When studying the transient characteristics of the variable speed Francis turbine generator set,it is found that by setting the virtual inertia,the transmission unit can respond to the sudden change in the power grid.For the variable speed Francis turbine generator unit,in the primary frequency regulation power adjustment process,the governor takes the unit speed as the main control target and the guide blade opening as the secondary control target,and the active power is regulated.The control is performed by the frequency converter.

关 键 词：变速恒频 混流式水轮发电机组 暂态特性 一次调频 

分 类 号：TM614[电气工程—电力系统及自动化]