Regional integrated energy system optimal configuration method considering economical efficiency and reliability

Abstract

The invention relates to a regional integrated energy system optimal configuration method considering economy and reliability. The method comprises the following steps: 1) establishing a regional integrated energy system model; 2) obtaining an equipment state transition time sequence model; 3) constructing a double-layer optimization configuration model; and 4) carrying out multi-objective solution on the double-layer optimization configuration model to obtain and execute a regional integrated energy system multi-objective optimization configuration scheme considering economic and reliability factors. Compared with the prior art, the method has the advantages that economy and reliability are considered, practicability is high, accuracy is high, and reliability quantification is achieved.

Description

technical field [0001] The invention relates to the technical field of electric power system planning, in particular to a regional comprehensive energy system optimization configuration method that takes economy and reliability into consideration. Background technique [0002] The regional comprehensive energy system is located in the terminal link of energy consumption. It uses micro-grid as the main form, which helps to realize multi-energy complementarity and improve energy utilization. The optimal configuration of the regional comprehensive energy system is to achieve its safe, reliable and economical energy supply. important part of. In recent years, researchers at home and abroad have carried out more research on the optimal configuration of regional integrated energy systems. However, the existing research mainly focuses on reducing system costs, reducing carbon emissions, and improving the utilization rate of renewable energy. Research on reliability aspects of regi...

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Problems solved by technology

However, only considering the reliability of the system in the constraint conditions tends to make the configuration scheme more conservative, resulting in the increase of redundant equipment and excessive investment; The relationship between economy and reliability is also not conducive to providing a reference for planners' decision-making

[0004] The difficulty of using reliability as the objective function of optimal configuration lies in adopting a suitable method to realize reliability quantification. Reliability quantification methods are mainly divided into two categories: state enumeration method and simulation method. increases exponentially, so this method is only suitable for systems with fewer faulty components; the simulation method is divided into non-sequential Monte Carlo method and sequential Monte Carlo method, and the latter can be used in sampling In the process of considering the changes of the system in time series, it is possible to quantify the reliability of systems containing energy storage and renewable energy and other equipment with strong time series correlation. At present, in terms of optimal configuration of regional integrated energy systems, there is no Sequential Monte Carlo method is proposed as a quantification method for its reliability

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