Hierarchical optimization operation method for regional integrated energy system based on multi-target model predictive control

Abstract

The invention discloses a hierarchical optimization operation method for a regional integrated energy system based on multi-target model predictive control, which comprises the following steps: setting maximum renewable energy consumption capability and comprehensive energy efficiency in a dispatching period of the regional integrated energy system as an upper-layer target function, and setting minimum operation cost and energy consumption cost as a lower-layer target function; in each scheduling period, respectively predicting distributed wind and light output power and load in the regional integrated energy system, and performing prediction error correction based on the real-time state of the system to obtain a prediction value; and on the basis of the scheduling constraint condition, the upper-layer objective function, the lower-layer objective function and the predicted value, adopting a model prediction control method to carry out online rolling hierarchical optimization scheduling solution, obtaining a rolling optimization solution result, and outputting a scheduling plan of the regional integrated energy system in a scheduling time period. According to the invention, the online adjustment requirement of the system can be met, a hierarchical optimization scheduling scheme is formulated, and hierarchical optimization operation of the regional integrated energy system is realized.

Description

technical field [0001] The invention belongs to an energy system optimization scheduling method, in particular to a layered optimization operation method of a regional comprehensive energy system based on multi-objective model predictive control. Background technique [0002] With the introduction of the Internet + smart energy development strategy, it has become an inevitable choice for my country's sustainable energy development to vigorously develop renewable energy, improve overall energy efficiency, reduce environmental pollution, and reduce system operating costs. Because the regional comprehensive energy system has the remarkable characteristics of being closely connected with energy-consuming customers, including a variety of distributed renewable energy sources, and multi-energy complementary planning and operation, and realizes the coupling and interconnection of heterogeneous energy flows to provide users with flexible supply of electricity, heat, It has been wide...

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Problems solved by technology

[0004] At present, the processing of the uncertainty of load and renewable energy output in the optimal dispatching process of the regional integrated energy system is mostly realized by establishing a multi-period advance dispatching model that considers prediction errors, which cannot meet the online adjustment requirements of the actual operation of the system; or It meets the online adjustment requirements of the system, but does not consider the error of prediction information and small time scale operation information

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