基于DSP的高水头冲击水轮发电机组交流励磁控制系统研制  

Development of excitation control system of high water-head pelton turbine based on DSP

作　　者：刘伟[1] 贺晓蓉[2] 贺娟[2] 熊文[2] 李钊[2] 

机构地区：[1]重庆大学自动化学院,重庆400044 [2]重庆理工大学电子信息与自动化学院,重庆400050

出　　处：《电力系统保护与控制》2010年第20期183-188,共6页Power System Protection and Control

基　　金：重庆市科技攻关计划项目(2007AC3033);重庆理工大学青年科学基金项目(2008ZQ02)

摘　　要：在国内首次对高水头冲击水轮发电机组的变速恒频运行、最大效率追踪等问题进行系统分析和研究。针对被控对象多变量、强耦合特点,提出了变结构、变参数协调控制策略,实现了交流励磁控制与液压调速器的最优动态匹配。采用双PWM变换器结构,构建了一套基于TMS320F2812的高可靠、低成本交流励磁与调速协调控制系统,通过实验分析表明,该控制系统提高了电网稳定性,实现了高水头冲击水轮发电机的最大效率追踪。This paper for the first time in China analyses and researches the VSCF,maximum efficiency tracking,etc of high water-head pelton turbine.In order to cope with the multivariate nature and strong coupling of the controlled device,it put forwards a coordination control scheme with variable structure and variable parameter,fulfils the optimal dynamic matching of the AC excitation control system and the hydrodynamic governor.It adopts the back-to-back PWM converters and builds the AC excited and speed coordinated control system on the basis of TMS320F2812.The system is fairly reliable and lowcost.Experimental analysis proves that this system strengthens the security and stability of grid,and at the same time achieves the maximum efficiency tracking.

关 键 词：变速恒频 交流励磁控制 数字信号处理器 高水头冲击水轮发电机组 

分 类 号：TM312[电气工程—电机]