摘要
随着国内冲击式机组单机容量的不断增大,对冲击式机组的稳定、安全运行要求更加严格,为了满足大型冲击式机组运行的要求,论文设计了控制偏差和偏差变化率为坐标的控制平面,提出了基于9区图的增益自适应调节的PID控制方法,提高了冲击式水轮机组空载并网以及小电网运行时的控制品质。在此基础上,研究了在冲击式机组的负载运行和小网运行的特殊工况问题,并提出了相应的解决办法。所提的方法已经应用于实际的冲击式机组调速器系统,并通过了实验室验证,即将投入现场试运行。
The raising size of single-unit of the domestic projectile hydro-turbine makes the requirements on the stable and safe operation of projectile unit become higher. To meet the demand of the operation of the large-size projectile unit, a plane with respect to the coordination, where the control deviation acts as horizontal axis and the derivative of the control deviation acts as vertical axis, is designed. Based on the above plane, a nine region based adaptive gain regulation of PID control strategy is proposed. This method improves the control quality on no-load connecting-to-grid and the operation in a small grid. Furthermore, the special issues on the loaded operation and operation in a small grid of the projectile unit are studied, and the corresponding solutions are given. The proposed scheme is applied on the speed governor system of the projectile hydro-turbine unit, which is verified by the lab tests. The implemented control system will be put into service recently.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2009年第16期16-19,34,共5页
Power System Protection and Control
基金
国家863计划资助项目(2008AA05Z214)
关键词
冲击式水轮机
调速器
多喷嘴
控制策略
九区图
projectile hydro-turbine
speed governor
multi-jets
control strategy
nine-region control
