A multi-energy complementary system integrating solar-hydrogen-gas has been developed for multi-energy complementary cogeneration systems

aimed at meeting users' demands for cooling

heating

power

and gas. In order to optimize the system performance

a multi-objective optimization evaluation system of the multi-energy complementary cooling

heating and power cogeneration system including economy

environmental protection and hydrogen doping ratio is constructed

and a mixed-integer linear programming model for multi-objective optimal scheduling is established based on this system. With the obtained Pareto frontier solution set

the optimal solution in the solution set is found by using the method of distance to the ideal solution to identify the optimal solution. By changing the blending ratio of hydrogen injected into the natural gas pipeline network

the optimal operating conditions for the devices in the electricity

heat

and cold networks are obtained.The results show that

under the condition of fixed user load

with the hydrogen doping ratio of 14.47%

the system operating cost per day is the lowest(26 794.31 yuan)

and the carbon emission is the least(162.03 kg). The results indicate that the proposed scheme is not only economically better

but also has the characteristics of energy saving and emission reduction

and performs the best in comprehensive evaluation

compared with the 2 reference systems. The conversion of renewable energy sources into electricity

followed by the transformation into hydrogen and its incorporation into the natural gas pipeline network according to a specified blending ratio for application in combined cooling

heating

and power generation systems

significantly reduces the use of natural gas. This approach enhances energy utilization efficiency

maximizes the integration of renewable energy sources

and reduces carbon emissions.