With the deepening of Chinese industrial structure adjustment and energy structure reform

the pressure on the peak load regulation of the power grid increases continuously. Flexible and deep peak load regulation operation gradually becomes an important development direction in the field of thermal power plants in the future. The limitations of various aspects of thermal control field for thermal power plant in deep peak load regulation reform are comprehensively analyzed. Potential technical plans of the control system retrofit for depth peak regulation operation are given from the aspects of basic control logic optimization

low-load stable-combustion control

increasing variable load rate

entire denitration process control

and the optimal control considering the equipment life and so on. The practical experiences of both the supercritical and the subcritical units shows that the technological transformation for deep peak load regulation control needs comprehensive consideration. Full coordinated control of 25%Pe~30%Pe and above loads can be achieved

and the integrated variable load rate can be increased to more than 2%Pe/min.