AGC机组分群控制策略.pdfVIP

第 37 卷 第 3 期 电 网 技 术 Vol. 37 No. 3 2013 年 3 月 Power System Technology Mar. 2013 文章编号：1000-3673 （2013 ）03-0868-06 中图分类号：TM 743 文献标志码：A 学科代码：470·4054 AGC 机组分群控制策略 陈铭，刘娆，吕泉，李卫东 （大连理工大学电气工程学院，辽宁省 大连市 116023 ） A Grouping Control Strategy for AGC Units CHEN Ming, LIU Rao, LÜ Quan, LI Weidong (School of Electrical Engineering, Dalian University of Technology, Dalian 116023, Liaoning Province, China) ABSTRACT: Quickly adjustable capacity of units is an im- 济调度负责[1,3-8] 。 portant means to maintain power grid frequency stability, 不同发电机组的 AGC 调节性能差异很大，水 however such a capacity is very limited. According to the dif- 电机组延迟时间短，调节速率快，控制周期可达 s ferences among adjustment performances of AGC units and the 级，而火电机组延迟时间长，调节速率慢，控制周 features of daily load curve at different time-intervals, a grouping and time-interval control strategy for AGC units is 期一般在 min 级。在进行电力系统频率调节时由于 proposed, that is, during time-interval of emergent load varia- 发电机组 AGC 调节性能之间的差异，如果所有 tion the adjustable capacities of all AGC units are fully utilized AGC 机组都采取相同的控制策略则会遇到一些问 to trace load variation; and during time-intervals of stable load, 题。当电力系统的频率偏差的方向频繁变动时，调 the capacities of those units with medium- or slow adjustment 节性能好的机组能迅速响应负荷指令，跟踪负荷变 speeds are used to replace the capacities of quickly adjustable 化，而调节性能差的机组由于其 AGC 调节周期较 units to make power grid possessing a certain fast adjustable ability, meanwhile the back-adjustment of units, which is un- 长，当系统频率偏差方向发生变化时，机组很可能 helpful to system adjustment, can be reduced. Th