Electrical interconnection integrated energy system optimization planning method and system

Abstract

The invention discloses an electrical interconnection integrated energy system optimization planning method and system. An integrated energy system optimization planning model in which a power system and a natural gas system are combined is established, and the model is a two-stage three-level defense-attack-defense robust optimization planning model, and meanwhile, include extension plans of power lines and natural gas pipelines; in the first layer, a system planning manager needs to reasonably carry out joint planning on a power system and a natural gas system to minimize the maximum load loss caused by any possible extreme event; in the second layer, an attacker attacks the fragile part in the power system and the natural gas system to cause the maximum load loss; and on the third layer, a system operation manager can optimize the internal operation state of the system for an extreme scene to achieve the minimum load loss in a damaged state. The invention lays a solid foundation for building an efficient, continuous and safe modern energy supply system.

Description

technical field [0001] The invention belongs to the technical field of integrated energy system optimization planning, and in particular relates to an electrical interconnection integrated energy system optimization planning method and system. Background technique [0002] Integrated Energy System (IES) refers to the power system as the core within a certain area, which is highly coupled with gas and thermal systems, and optimizes the production, transmission, distribution, storage, conversion and consumption of different energy sources through unified coordination. The integrated system of energy production, supply and sales formed after such links is the physical cornerstone of the Energy Internet. [0003] In the course of historical development, the planning and construction of traditional energy systems are often limited to the interior of a single form of energy supply such as electricity, gas, cooling, and heat. They lack mutual connection and cannot use the character...

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Problems solved by technology

At present, there have been some studies on the improvement of resilience in the field of microgrids, but there is still insufficient research on the resilience of comprehensive energy systems coupled with multiple energy sources such as electricity, gas, heat, and cold in the face of extreme events. The physical and operational characteristics of natural gas systems Both are different from the power system and have an impact on its resilience level. Therefore, it is of great significance to study the joint planning method of the electricity-gas interconnection integrated energy system to deal with extreme events and improve the resilience level of modern energy supply systems.

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