A comprehensive energy system equipment type selection and capacity planning method considering heat storage links

Abstract

The utility model relates to a comprehensive energy system equipment type selection and capacity planning method considering heat storage links: parameters of energy conversion and heat storage equipment are input according to equipment types to be selected and energy forms of the integrated energy system in the park; according to the input parameters, the model of equipment selection and capacityplanning of integrated energy system considering heat storage is established. According to the equipment selection and capacity planning model of integrated energy system considering heat storage, the mixed integer linear programming method is used to solve the problem based on the annual operation data of cooling, heating and electricity load in the park. The solution results are output, including equipment selection and capacity planning scheme, as well as the annual comprehensive cost of the system, electricity / gas annual consumption. The invention can simultaneously meet the needs of cold, hot and electric loads. The method stores heat at low power price and supplies heat to the system during peak power price, thereby reducing power consumption during peak period and significantly improving system operation economy; the method can significantly reduce the annual comprehensive cost of the comprehensive energy system, realize the multi-energy complementarity and improve the energy utilization efficiency.

Description

technical field [0001] The invention relates to a comprehensive energy system equipment type selection and capacity planning method. In particular, it relates to a comprehensive energy system equipment selection and capacity planning method considering the heat storage link. Background technique [0002] As energy and environmental issues become more and more prominent, how to improve energy utilization efficiency and minimize the environmental impact of the energy use process has become an important topic in the energy field. The integrated energy system integrates refrigeration, heating and power generation. It can not only improve the utilization rate of primary energy through energy cascade utilization, but also show great advantages in reducing emissions. Therefore, the integrated energy system has become an important direction of future energy technology development, and its planning and operation are research hotspots. [0003] Existing research on equipment type se...

AI Technical Summary

Problems solved by technology

[0004] However, there are relatively few studies on the planning of integrated energy systems that include heat storage, and there is a lack of research that fully considers multiple energy conversion equipment and multiple energy sources such as cold, heat, and electricity.

In the optimization variables, neither the equipment type nor the optimized equipment capacity is optimized at the same time, but the equipment type is determined first, and then the capacity is optimized, which often cannot guarantee the optimality of the solution

In addition, the existing research does not consider the coupling between energy sources enough. The coupling analysis between energy sources is mostly focused on qualitative discussions, lacking quantitative analysis, and it is difficult to accurately evaluate the complementary benefits brought by multi-energy coupling during system operation.

Images