Electric-thermal coupled multi-energy-flow system optimization dispatching method considering economic efficiency and energy efficiency

Abstract

The invention provides an electric-thermal coupled multi-energy-flow system optimization dispatching method considering economic efficiency and energy efficiency, and belongs to the technical fields of operation and control of the power grid comprising multiple kinds of energy forms. According to the method, equality and inequality constraints of steady state safety operation of a power grid and aheat supply network in the electric-thermal coupled multi-energy-flow system are set firstly; an economic efficiency target function and an energy efficiency target function of optimization and dispatching of the electric-thermal coupled multi-energy-flow system are established separately; a dispatching scheme taking economic efficiency as the target and a dispatching scheme taking energy efficiency as the target are solved separately; the two schemes are substituted into corresponding target functions to perform interaction calculation, and an electric-thermal coupled multi-energy-flow system optimization dispatching model considering economic efficiency and energy efficiency is established according to the calculation result; and the model is solved, and finally an electric-thermal coupled multi-energy-flow system optimization dispatching scheme is obtained. By taking tight coupling and mutual influence of the electric-thermal system into consideration, the electric-thermal coupledmulti-energy-flow system optimization dispatching considering economic efficiency and energy efficiency is realized.

Description

technical field [0001] The invention relates to an optimization scheduling method for an electric-thermal coupling multi-energy flow system that takes into account both economy and energy efficiency, and belongs to the technical field of power grid operation and control with multiple energy forms. Background technique [0002] The multi-energy flow system is an important carrier of the Energy Internet. In the process of design, operation and management, it deeply integrates the sources, grids and loads of various types of energy such as cold, heat, electricity and gas, and integrates them in production, transmission and conversion. Multi-functional collaborative optimization of a series of links such as storage, consumption and so on. Compared with the traditional energy system that is separated from each other, the benefits brought by the multi-energy flow system through multi-energy coordination include: 1) Through the cascade development, utilization and intelligent manag...

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Problems solved by technology

The current research mainly focuses on a single independent system, and most of them only focus on the economics of the operation of the multi-energy flow system. It is necessary to study the optimal scheduling method of electric-thermal coupling multi-energy flow system that takes into account both economy and energy efficiency.

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