Abstract:

Abstract:Specific requirements to regulation performance of automatic generation control(AGC) of power unit are proposed by the “two rules” of North China Grid Company Limited. For the problems of low load change rate and low load response speed of AGC existed in a certain F class twoonone gassteam combined circulating generation unit, a proportion integration differentiation (PID) control of variable parameters is added in the power control circuit of steam turbine, and a threshold method is adopted in the power and speed limiting circuit of AGC, which improved the load change rate and load response speed of steam turbine unit. After that, it meets the examination requirements of AGC under the premise of guarantee the safe and stable operation of unit.

Key words: Keywords:gassteam combined circulating generation unit, twoonone, automatic generation control, proportion integration differentiation control, threshold method