摘要
针对现有小水电系统并列时间长,精度低以及缺乏全过程自动控制等问题,提出了一种针对500kW水电机组全过程运行自动控制器的设计方法,详细介绍了控制器的设计原理及其硬软件实现方案,并分别对系统启动、准同期并列、并网运行和解列退网四个过程的控制程序进行了叙述.根据准同期并列的特点提出并实现了模糊调频、调压控制算法和合闸控制预测算法相结合的混合控制策略.现场运行表明:该控制器能使水电机组启动过程加快,稳频、稳压特性好,并列可靠,无电冲击和机械冲击;停机过程快.
The traditional small-hydropower systems have some problems, such as long duration of switch on, low precision and lacking of whole-process automatic control mechanism. This paper proposes a kind of automatic quasi-synchronization controller for 500kW hydropower generators. It also introduces four sub-processes, namely generator startup, quasi-synchronization control and switching on, operation on power network, and disconnection from power network. Each part is discussed respectively. According to the feature of quasi-synchronization, a mixed control strategy, including fuzzy control algorithm in frequency and voltage, and prediction control algorithm for switch-on is designed and implemented. The fieldwork shows that the controller is of an excellent performance in faster speedup in hydropower generator startup, good stability in frequency and voltage, higher reliability in switch-on, no electrical and mechanical impact and shorter in machine shutting up.
出处
《浙江工业大学学报》
CAS
2006年第1期89-93,共5页
Journal of Zhejiang University of Technology
关键词
水电机组
准同期并列
全过程控制器
模糊调频
调压控制算法
合闸控制预测算法
hydropower generator
quasi-synchronization
whole-process controller
fuzzy control algorithm of frequency and voltage
prediction control algorithm for switch-on
