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】２００ＭＷ机组由机械液压控制系统改为电液并存控制系统，并采用二次切换方案，改造后，在额定负荷进行电液切换时，其动态扰动有多大，对油动机行程及负荷有多大扰动，这两个参数是电液切换系统最重要的指标之一。针对这个问题需进行动态计算，以便对今后国产２００ＭＷ机组的电液改造提供理论依据。
】 200MW unit from the mechanical hydraulic control system to the electro-hydraulic coexistence control system, and the use of the second switching scheme, after the transformation, the rated load when the electro-hydraulic switch, the dynamic disturbance how much on the oil motor stroke and load have much perturbation , The two parameters is one of the most important indicators of electro-hydraulic switching system. In order to solve this problem, dynamic calculation is needed in order to provide theoretical basis for electro-hydraulic reconstruction of domestic 200MW units in the future.