An operation optimization method for an electrothermal coupling integrated energy system

Abstract

The patent of the present invention discloses an operation optimization method of the electrothermal coupling integrated energy system, which establishes the operation optimization objective function and constraint conditions of the electrothermal coupling integrated energy system, thereby establishing the operation optimization model of the electrothermal coupling integrated energy system, and then establishes the simulation of the heating network and thermal load state The model uses the temperature of heat medium injected into the heating network by the combined heat and power system in the operation optimization results as input to calculate the actual state of the heating network and heat load, and finally establishes the operation optimization process of the electric-thermal coupling integrated energy system, and compares the simulation model results with the optimization model As a result, the error value is judged. When the error of the two exceeds the allowable range, the resolution of the heat network and heat load model is reduced and the above steps are repeated, otherwise stop, so as to determine the appropriate resolution of the heat network and heat load model. This method can fully Considering the slow dynamic process of the heating network and heat load state changes in the dispatching command cycle, it can effectively guarantee the user comfort while realizing the efficient and economical operation of the system.

Description

technical field [0001] The invention belongs to the field of integrated energy systems, and in particular relates to an operation optimization method for an electrothermal coupling integrated energy system. Background technique [0002] With the increasingly prominent environmental issues and energy security issues, how to improve the overall energy efficiency and build a green and sustainable energy system has become an important issue that needs to be solved urgently in the current energy field. The integrated energy system takes electricity as the core, integrates various energy sources such as gas and heat, and aims to achieve efficient energy utilization and renewable energy consumption as the fundamental purpose. It can organically coordinate multiple links such as energy production, transmission and distribution, and utilization. Its efficient Energy utilization efficiency and good renewable energy acceptance environment make it have a bright prospect in the developme...

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Problems solved by technology

[0003] However, the current operation optimization methods for electrothermal coupling integrated energy systems do not fully consider the dynamic process of the heating network and heat load within the dispatching command cycle, because the physical process of the heating network and heat load is described by (partial) differential equations. It is a dynamic process, so its model resolution has a certain impact on the accuracy of the operation optimization results and even affects the comfort of users, which has a negative impact on the operation of the integrated energy system

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