In order to solve the problem of strong coupling between the electric load and the thermal load during turbine operation

this paper proposes a fuzzy decoupling control algorithm based on rules but not dependent on the mathematical model of controlled object. On the basis of fuzzy strategy and decoupling compensation

this algorithm designs the decoupling controller by the fuzzy control algorithm and constructs the double-fuzzy decoupling controller by the main controller. Then the multivariable system of the steam turbine operation is transformed into a single variable system

thereby realizing the thermo-electric load decoupling of the steam turbine and improving the dynamic response capability and robustness of the control system. The simulation results show that the double fuzzy decoupling control scheme can greatly reduce the load disturbance and effectively solve the problem of thermo-electric coupling during turbine operation.