A comprehensive energy system day-ahead economic dispatching method

Abstract

The present invention relates to a comprehensive energy system day-ahead economic dispatching method, by which the technical problem that the comprehensive energy utilization efficiency is low due tothe fact that an existing analysis method takes insufficient consideration of the multi-energy coupling effect of heat, electricity and gas can be solved. The method comprises the following steps of S100, establishing an energy efficiency model with economic benefit maximization as a target to meet the requirements of different users for electricity and heat under supply and demand balance and operation constraint conditions; S200, establishing a model objective function, taking the total profit maximization as an objective function, i.e., the total system cost is subtracted from the energy selling profit, wherein the total cost comprises the operation cost of power supply, heat supply and gas supply, the starting cost and the shutdown cost; S300, establishing a model constraint condition,wherein the model needs to meet two types of constraints of the system operation constraint and the operation constraint of each device; and S400, performing linear conversion on the model. Accordingto the method, the segmented linearization is adopted to carry out conversion solution, a good effect is achieved, and important guidance can be provided for researching comprehensive energy system optimization scheduling adapting to the marketization environment.

Description

technical field [0001] The invention relates to the field of integrated energy systems, in particular to a day-ahead economic scheduling method for integrated energy systems. Background technique [0002] In 2013, the National Development and Reform Commission issued the "Interim Measures for the Management of Distributed Power Generation", pointing out the active development of natural gas combined heat, power and cooling for local consumption; "Implementation Opinions", accelerate the construction of multi-energy complementary integration optimization demonstration projects, coordinate optimization, and improve efficiency. Promoting the multi-energy coordinated and complementary energy interconnection model and accelerating the construction of an integrated energy system (Integrated Energy System, IES) are the direction of my country's future energy development. The optimal scheduling of gas-storage multi-energy coupling is particularly necessary. [0003] At present, the...

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Problems solved by technology

[0005] A day-ahead economic scheduling method for an integrated energy system proposed by the present invention can solve the technical problem that the existing analysis method does not consider the multi-energy coupling effect of heat, electricity, and gas so that the comprehensive energy utilization efficiency is not high

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