Generalized energy storage-based multi-energy power system optimal scheduling method

Abstract

The invention provides a generalized energy storage-based multi-energy power system optimal scheduling method. The method comprises the following steps: 1, establishing mathematical models of a powergeneration unit, a heat supply unit and generalized energy storage in a multi-energy power system; 2, establishing a generalized energy storage-based multi-energy power system optimal scheduling modelbased on the mathematical model of the power generation unit, the heat supply unit and the generalized energy storage in the multi-energy power system established in the step 1; and 3, solving the multi-energy power system optimization scheduling model based on generalized energy storage to obtain a multi-energy power system optimization scheduling strategy based on generalized energy storage. Byadopting the invention, compared with conventional energy storage, generalized energy storage can further play a role in flexible adjustment of energy storage, and various regulation and control resources of the system are fully utilized; meanwhile, an electricity-to-heat conversion device is introduced into the regional multi-energy power system, so that the internal thermal-electricity conversion capability of the system can be enhanced, and the new energy consumption level is improved.

Description

technical field [0001] The invention relates to the technical field of distribution network dispatching operation, in particular to an optimal dispatching method for a multi-energy power system based on generalized energy storage. Background technique [0002] In order to further promote the consumption of new energy and improve the economic operation level of the power system, some scholars have proposed the concept of "Energy Internet", which adopts multi-energy coordination and complementary technologies to achieve efficient use of energy. As an important supporting means of energy interconnection, energy hub (Energy Hub, EH) can provide an effective interface between energy producers and consumers, and realize the coupling of multiple energy sources. In EH, in addition to wind, light, water, fire and other electrical energy, it also includes cold, heat, gas and other types of energy. EH can meet the conversion needs of various energy sources, and is the center of mutual...

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Problems solved by technology

[0004] The above studies provide a strong basis for the optimal dispatch of multi-energy systems with generalized energy storage, but there are still the following limitations and deficiencies: On the one hand, most of the current multi-energy system optimization models only consider power flexible loads as part of generalized energy storage. Less consideration is given to the contribution of thermal load regulation capacity to generalized energy storage; on the other hand, the current research is still insufficient to study the comprehensive regulation characteristics of power storage and heat storage devices, and less consideration is given to the system's electricity-to-heat conversion characteristics

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