火电AGC机组超前控制策略

针对目前常规火电机组自动发电控制(Automatic Generation Control,AGC)性能的不足,设计了基于超短期负荷预测的火电机组AGC超前控制策略,与基于区域控制误差(Area Control Error,ACE)控制的水电机组AGC相配合,实现水火电AGC机组协调控制,达到充分利用火电AGC并调整长期ACE指标的目的。这种方法不仅适用于当前阶段,经过少量的改动也能应用于电力市场AGC辅助服务交易中。应用该方法的超前AGC控制系统已在江西EMS 系统平台上实现并投入在线闭环控制,运行实践表明,该方法能有效预测ACE未来的变化趋势,对指导AGC进行超前调整起到了很好的作用。

Strategy of Automatic Generation Control in Advance for Thermal Generator

According to the insufficiency of automatic generation control (AGC) ability of traditional thermal generator, a strategy of control in advance based on ultra-short term load forecasting is presented, with which, thermal generators coordinate with hydroelectric generators with AGC based on area control error(ACE) control, the coordination control of thermal and hydroelectric generators with AGC is realized and AGC ability of thermal generators can be fully utilized. This strategy can not only be used at present, but also can be used in AGC auxiliary service trade after a bit modification. The software based on this strategy has been implemented in Jiangxi provincial EMS platform and been in operation of closed loop. The actual operation shows that this strategy can effectively forecast variation trend of ACE and is useful for guiding modulation in advance of AGC.