With the increasing annual growth of wind and solar power generation

the issue of power consumption has become increasingly prominent. Meanwhile

high-capacity thermal power plants face relatively high auxiliary power loads

resulting in additional operating costs. To address these issues

a joint optimization dispatch model for wind-PV-thermal-storage for auxiliary power system of thermal power plant is developed based on the concept of multi-energy complementarity. Firstly

the compositional structure of the wind-PV-thermal-storage integrated power supply for auxiliary power of thermal power plants is outlined

prioritizing the supply of auxiliary power loads with wind power and photovoltaic power. Secondly

a wind-PV-thermal-storage integrated power supply optimization scheduling model is developed

taking into account the operating costs of thermal power units at different load rates and the costs associated with wind power

photovoltaic power

and energy storage. A hierarchical analysis method is employed to establish a multi-objective function based on the total cost

wind and solar curtailment costs

and environmental costs

while considering corresponding constraint conditions. Finally

various scenarios are set up to compare and analyze the optimization results of the integrated power supply system for auxiliary power.Experimental results demonstrate that the proposed model for the integrated power supply system can effectively reduce unit operating costs and environmental costs

as well as promote the integration of wind and photovoltaic power.