Method and device for generating multi-energy demand typical scenes of comprehensive energy system

Abstract

The invention discloses a method and a device for generating multi-energy demand typical scenes of a comprehensive energy system. The method comprises the following steps of S1, acquiring multi-energydemand load vectors of all the days to obtain a vector set; S2, if an iterative instruction is acquired, executing S3, and if an evaluation instruction is acquired, executing S4; S3, during each iteration, determining a clustering center of the corresponding number in the vector set until a difference between a clustering error square of the current iteration and a clustering error square of thelast iteration is judged to be smaller than a preset value, and determining all clustering centers of the current iteration to be typical scenes; and S4, acquiring a value range of the number of the clustering centers, determining the clustering centers of the corresponding number in the vector set according to the values in the value range, computing a cluster evaluation index corresponding to each value, and determining all clustering centers corresponding to the minimum cluster evaluation index to be the typical scenes. Through the typical scenes generated by the method of the method, the comprehensive energy system can be comprehensively and accurately analyzed.

Description

technical field [0001] The invention relates to the field of integrated energy systems, and in particular to a method and device for generating typical scenarios of multi-energy requirements in an integrated energy system. Background technique [0002] The integrated energy system involves the production, transfer and consumption of various energy sources such as electricity, heat, cold and gas. In the planning stage of the integrated energy system and the design stage of the operation mode, a large number of simulation calculations and analyzes need to be carried out. Typical scenarios that can describe the multi-energy requirements of the integrated energy system are the necessary input data for these simulation calculations and analyzes. [0003] However, if the load data of the whole year are analyzed, the calculation burden will be greatly increased and it is not universally representative. The multi-scenario analysis technology reduces the similar scenes in the corres...

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Problems solved by technology

[0004] At present, the method for constructing electricity load scenarios is relatively mature, mainly using extreme scenarios such as "large abundance, small abundance, large dryness, small dryness" or "large summer, small summer, large winter, small winter" as simulation models. Input, to analyze the problems faced by the power system under different load scenarios, but this way of considering the problem is too conservative, and it is only suitable for the analysis of the stability and reliability of the system operation under extreme events for the integrated energy system that focuses on economic benefits. , but it is not suitable for long-term operation simulation and economic analysis, and it is difficult to obtain a solution close to reality in probability

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