Ancillary services are critical to maintain safe and stable operation of power systems that contain a high proportion of renewable energy. As a high-quality regulation resource

the regional integrated energy system with energy storage equipment can effectively adjust the non-negligible frequency offset caused by the renewable energy access to power systems

and help to solve the power system's frequency stability problems. An optimization model for regional integrated energy system operation based on market mechanism is established. The simulation and analysis are carried out by YALMIP and CPLEX with MATLAB

and the total operating costs under different dispatch modes are obtained. By using the actual operation model and parameters of the Pennsylvania-New Jersey-Maryland(PJM)regulation market to guide the optimal allocation of regulation resource in the regional integrated energy system

a balance between the power trading revenue and regulation market revenue is made to achieve the maximum profit.