The coupling of thermal units with flywheel energy storage system can effectively improve the frequency regulation performance of AGC

solve the problems of long response time

slow climbing rate and low regulation accuracy of thermal units when tracking AGC commands

and obtain the auxiliary revenue of frequency regulation.This paper proposes a flywheel energy storage system control strategy for engineering practice

taking into account the requirements of the "two rules" of the Northwest Power Grid on AGC climbing performance

to improve the performance index of the combined system participating in AGC frequency regulation while preserving flywheel power. The results show that the proposed strategy improves the performance of the combined thermal power units and storage systems in AGC

and the economic efficiency of the power plant is significantly improved.