Research On The Best Starting Up Process Of TRT

Top Gas Pressure Recovery Turbine Unit is internationally recongnized as a valuable energy unit. Although the energy of pressure wasted in the Pressure Reducing Valve Group or Bischoff Precipitator can be recovered by TRT, however, the stability of the top gas pressure of the blast furnace must be ensured. TRT start-up steadily is the first condition to keep top gas pressure of the blast furnace stability.This thesis takes the3rd TRT in ShouGangQianGang as the research object. Advance the turbine rotor in the start-up process must be fast through the critical resonance area, to avoid long time of harm caused by exaggerate mechanical vibration; Also requires TRT start steadily; to avoid causing top gas pressure of the blast furnace disturbance. This requires control system to ensure that both the quickness of TRT start and ensure that the TRT start stability. So this algorithm is difficult to besatisfied with require of TRT Unit starting control. This thesis designs two PID controllers working by turns to adapt to different starting rev process.This control mode has the virtue of good adaptability, simple framework and convenient setting.Cause the PID control overshoot and quickening the existing between irreconcilable conflict, make the algorithm in a certain degree of TRT generating unit is difficult to meet the requirements of the startup control technology.Finally, the simulation analysises the two PID controllers working by turns for tracking performance, and compares with a certain PID control, The results show that the design of double PID controller working by turns to adapt to different starting rev process can fast transit the critical sympathetic vibration rev area, and has a reposeful rev raising. This control mode achieves better control effect.