Patent ID: 7980053

Claim:
A turbine starting controller for adjusting and controlling an amount of steam or gas flowing into a turbine using a control valve, comprising: an optimum starting controlling unit configured to: predict a heat transfer rate in a prediction period based on a directly manipulated variable, predict a rate of change of a first stage metal temperature in the prediction period based on the predicted heat transfer rate and a measured first stage metal temperature at a current time, predict thermal stress generated in a turbine rotor over the prediction period from a current time to a future, calculate, for each control period, a manipulated variable optimum transition pattern in the prediction period which makes a turbine starting time shortest while keeping the predicted thermal stress equal to or lower than a prescribed value, determine, as an actual optimum manipulated value, a value at the current time in the manipulated variable optimum transition pattern, directly feedback a turbine acceleration rate pattern and a load increase rate pattern, determined when the manipulated variable optimum transition pattern is calculated, to where the heat transfer rate in the prediction period is predicted; and an rpm/load controlling unit to which the optimum manipulated variable from the optimum starting controlling unit is input, for controlling actuation of the control valve.