Comprehensive energy system flexibility evaluation method

Abstract

The invention relates to a comprehensive energy system flexibility evaluation method. The method comprises the following steps: 1) constructing a framework of an integrated energy system flexibility index evaluation system; and 2) realizing qualitative and quantitative evaluation of the flexibility of the comprehensive energy system by combining an analytic hierarchy process and a fuzzy evaluation method according to the framework of the comprehensive energy system flexibility index evaluation system. Compared with the prior art, economic reliability and safe operation of the integrated system are considered, guidance is provided for energy gradient utilization, flexible optimization planning, flexible resource scheduling and flexible optimization operation of the integrated energy system, consumption of high-proportion renewable energy sources can be achieved, interaction between the supply end and the demand end of the system is enhanced. And the overall energy utilization efficiency of the system is improved.

Description

technical field [0001] The invention relates to the field of flexible resources of integrated energy systems, in particular to a method for evaluating the flexibility of integrated energy systems. Background technique [0002] Under the background of the "double carbon" vision of carbon peaking and carbon neutrality, and the "new power system" with new energy as the main body, the comprehensive energy system with multi-energy integration, coordinated complementarity and cascade utilization is developing rapidly. Due to the increase in the proportion of uncertain renewable energy consumption and load fluctuation factors, the integrated energy system is facing the challenges of production-demand imbalance and economic operation. System flexibility becomes the key to safe, reliable, and economical operation of the system. Therefore, Quantitative evaluation of the flexibility of integrated energy systems is urgently needed. [0003] At present, most of the existing flexibility ...

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Problems solved by technology

Most of the evaluation indicators of the existing flexibility index system are qualitative indicators, and there are few literatures that set quantitative indicators. In order to make the conclusion of qualitative analysis convincing, it is necessary to quantify it, so it is necessary to set quantitative indicators for evaluation; a single Evaluation methods have their own limitations, and it is difficult to reflect the comprehensive evaluation of the entire system as a whole. Several methods need to be combined to avoid the disadvantages of the method to conduct a comprehensive and effective evaluation

[0004] At present, most of the existing patented technologies on flexibility evaluation indexes are researches on the flexibility indexes of power systems, while there are few patented technologies on the flexibility evaluation indexes of integrated energy systems, which lack the ability to accurately reflect the flexibility of integrated energy systems. The index system for resource evaluation; some patents that study the flexibility evaluation index of the comprehensive energy system focus on a certain link in the system, such as energy production, transportation, storage, and utilization. There is no systematic research on the flexibility evaluation index. Construct a complete system flexibility evaluation index system

At the same time, among the existing patents related to the evaluation method of the index system, most of the patents for constructing the index system with a single method are more, and each single evaluation method has its own disadvantages

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