Mathematical Model of governing system's dynamic characteristic for condensing turbine, reheatturbine, extraction turbine and power frequency turbine are introduced in this paper.
Low load stability is the key point of operation stability of reheat steam turbine, it is also the main basis of the design of the control system.
低载运行稳定性是中间再热汽轮机运行稳定性的关键所在，也是机组调节系统设计的重要依据。
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Taking a triple pressure reheat HRSG in the gas-steam combined cycle as an example, a general expression of the steam turbine thermal efficiency to coupling parameter with the unfired HRSG is derived.