A real-time scheduling method for hybrid energy systems connected to large-scale renewable energy

Abstract

The invention discloses a real-time scheduling method for a hybrid energy system connected to large-scale renewable energy. According to the requirements for real-time operation and scheduling of the hybrid energy system, and on the basis of analyzing the output characteristics of renewable energy, a mixed energy system of cooling, heating and electricity is established. Real-time operation correction model, through the real-time correction model to make real-time corrections to the operation plan of the cold heating and electric hybrid energy system formulated recently to offset the impact of prediction errors, so as to ensure the safe, stable, reliable and economical operation of the cold heating and electric hybrid energy system; On this basis, a real-time running rolling optimization model of the cold, heating and electric hybrid energy system is established to update the planned operating points of various energy supply equipment at the next moment; by executing the scheduling results of the real-time running correction model and real-time running rolling optimization model, the system can The real-time supply and demand balance of energy is realized while taking into account the day-ahead scheduling plan.

Description

technical field [0001] The invention relates to a real-time operation and scheduling technology of a hybrid energy system, in particular to a real-time scheduling method for a hybrid energy system connected to large-scale renewable energy. Background technique [0002] With the continuous improvement of the penetration rate of renewable energy and the continuous increase of various load scales in the hybrid energy system of cooling, heating and power, the reliability and economy of the hybrid energy system of cooling, heating and power are facing increasingly severe challenges. Since a large amount of renewable energy is connected to the hybrid energy system of cooling, heating and electricity, the output of these renewable energy has the characteristics of randomness, intermittent and fluctuation, and it is difficult to achieve absolute error-free prediction in the day-ahead output forecast. Changes in the output and load of these renewable energy sources will cause the sys...

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Problems solved by technology

[0003] At present, some scholars have conducted research on the real-time operation of the hybrid energy system of cooling, heating and electricity around the topic of real-time correction. The research content of the real-time operation of the hybrid energy system of cooling, heating and electricity mainly focuses on two aspects. The reliability of dispatching, the second is how to use the correction strategy to dispatch the system in real time according to the prediction error, but the absolute error-free prediction cannot be achieved in the mixed cooling, heating and power energy system, so the revision of the day-ahead dispatching plan is inevitable

When formulating the correction strategy, it is common to only balance the real-time power deficit without updating the day-ahead scheduling plan according to the changed system operation status, which will cause the real-time operation results to deviate from the day-ahead operation target

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