汽轮机转速与功率同步控制新方法的仿真研究(英文)

Simulation Study of a New Method to Synchronously Control Rotate Speed and Power of a Steam Turbine

经典的汽轮机调节系统在实现功率跟踪负荷变化的同时会不可避免地引起转速的变化,从而引起电网频率的变化。应用线性系统极点配置的方法,提出了一种既能使汽机功率跟踪负荷,同时又能对汽机转速按指令曲线进行控制的新方法。用这种方法设计的调节系统就能省去二次调频的环节。计算机仿真的结果证明了本文所提出方法的正确性和有效性。

The frequency of the electric network will inevitably fluctuate because of rotate speed variation of a steam turbine, while its classical regulation system is accomplishing matching between its power and the referenced electric load. A new method is developed to synchronously control rotate speed and power of a steam turbine with pole placement technique of linear system. With this new control method, not only the rotate speed of a steam turbine can be controlled according to its instruction curve, but also its power can be synchronously controlled to quickly track the electric load without additional component of the frequency regulation. The computer simulation verifies the correctness and the effectiveness of the presented new control method.