A method and system for avoiding risk transactions of an interconnected energy system

Abstract

The invention discloses a method and system for avoiding the risk transactions of an interconnected energy system , and the method comprises the steps of building an interconnected microgrid group energy transaction interval optimization model with the optimal economic benefit for an interconnected microgrid group containing random renewable energy sources and loads; solving the service cost of the outer-layer microgrid transaction and the microgrid operation cost in the inner-layer uncertain environment by aiming at the optimization model; during solving, adopting the Bender decomposition anda genetic algorithm to solve the model, and obtaining an optimal transaction strategy under uncertainty; and solving an optimal transaction strategy according to the model, dispatching all the micro-grids in the micro-grid group, coordinating the energy transactions among the micro-grids, thereby avoiding the transaction risks. According to the method and the system, the representation of transaction prices, renewable energy sources and loads in the microgrid group is realized by adopting an intermittent description mode, and the uncertain influence of the transaction prices, the renewable energy sources and the loads is reduced.

Description

technical field [0001] The present disclosure relates to the field of renewable energy and energy interaction technologies, and in particular to a method and system for avoiding risk transactions in an interconnected energy system. Background technique [0002] The micro-grid technology dominated by renewable energy is gradually becoming the core energy supply system of industrial parks and business districts. Based on the physical interconnection structure of the energy system, regional energy interconnection systems such as multi-energy stations and micro-grid groups are on the horizon. Therefore, energy trading is an inevitable link in an interconnected energy system. However, since each microgrid belongs to different entities, and the randomness of renewable energy and loads often occurs, energy transactions are risky, that is, uncertain supply and demand cause transaction price fluctuations, which in turn cause frequent transactions and transaction interruptions. , ca...

AI Technical Summary

Problems solved by technology

However, since each microgrid belongs to different entities, and the randomness of renewable energy and loads often occurs, energy transactions are risky, that is, uncertain supply and demand cause transaction price fluctuations, which in turn cause frequent transactions and transaction interruptions. , causing the interconnected energy system to deviate from optimal economic benefits

[0003] The existing technology lacks the consideration of the energy transaction risk of the interconnected energy system, and the resulting transaction strategy and operation technology are difficult to meet the actual needs

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