Optimal scheduling method for integrated energy system considering renewable energy generation uncertainty and thermal comfort of users

Abstract

An integrated energy system optimization scheduling method considering the uncertainty of renewable energy power generation and user thermal comfort, which is characterized by: building a physical model of the integrated energy system; establishing an integrated energy system optimal scheduling model based on chance constrained programming; Sequence operation theory discretizes the probability density function of wind power output to generate a corresponding probabilistic sequence; through the probabilistic sequence, the expected value of wind power combined output in each period is obtained; the chance constraint form of spinning reserve is transformed into a deterministic constraint form; according to Membership function to obtain the indoor thermal comfort temperature range; construct the thermal transient equilibrium equation of the building to solve the heat load demand; input the initial parameters; solve the integrated energy system scheduling model; check whether the solution exists. If it exists, the process is terminated; otherwise, the confidence level is updated; the final integrated energy system optimization scheduling scheme is output. It has the advantages of low power generation cost of the system, flexible and reliable operation, etc.

Description

technical field [0001] The invention relates to an integrated energy system optimization scheduling method considering renewable energy power generation uncertainty and user thermal comfort, and belongs to the technical field of economic operation of integrated energy systems. Background technique [0002] With the increasingly serious energy crisis and environmental pollution, the active development and utilization of renewable energy has been considered as one of the important options to ensure system security and sustainable energy supply. However, the rapid development of renewable energy has also brought great challenges to the operation of the power system. The traditional constraints of “determining electricity by heat” and the problem of absorbing renewable energy greatly limit the flexibility and economy of system operation. In this context, the Integrated Energy System (IES), because it can realize the coordinated planning and optimal operation of various heterogen...

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Problems solved by technology

So far, there have been no literature reports and practical applications on the IES optimal dispatching method that simultaneously considers multiple distributed power generation including heat storage, electric boilers, electric energy storage, and wind and solar

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