| 摘要 |
PURPOSE: A method for controlling the temperature of a super-heater is provided to accurately analyze the influence of the temperature of steams in an inlet side, the flow rate of a fuel, the flow rate of the steam on the changes of the temperature for an outlet of a super-heater. CONSTITUTION: A method for controlling the temperature of a super-heater is as follows. A heat transferring model of the super-heater is obtained(S110). Actual plant operation data is obtained according to the loads(S120). A parameter value of the heat transferring model is calculated by the operation data analysis(S130). The actual operation data and a model simulation value are compared(S140). A super-heater temperature controlling logic is obtained based on the model(S160). The controller PID(Piping and Instrumentation Diagram) parameter is tuned(S170). A feed forward compensator is tested after switching the controller into a manual mode(S180). The performance of the super-heater logic is verified(S200). [Reference numerals] (AA) Start; (BB,DD,FF) No; (CC,EE,GG) Yes; (HH) End; (S110) Implementing a super-heater heat transferring model; (S120) Obtaining the actual power plant operation data according to load; (S130) Calculating a heat transfer model parameter value through analysis of the operation data; (S140) Comparing a model simulation value with the actual operation data; (S150) ||error|| < Allowable error ?; (S160) Implementing a super-heater temperature controlling logic based on the model with the parameter calculated; (S170) Tuning a controller PID parameter; (S180) Testing a feed forward compensator after switching the controller into a manual mode; (S190) Compensator normally operating?; (S200) Verifying the performance of a super-heater; (S210) Normal status and super response < Limit ?; |
