Optimal scheduling method considering generalized energy storage and thermal power joint peak regulation

Abstract

The present invention proposes a day-intra-day two-stage rolling optimization scheduling method considering generalized energy storage and thermal power joint peak regulation, which is characterized in that it fully taps the distribution characteristics and peak regulation potential of various resources of generalized energy storage on different time scales, so that It cooperates with the thermal power unit to realize the coordinated dispatch of various resources, which improves the system's new energy consumption and reduces the system's operating cost. Firstly, the flexible load on the demand side and the actual energy storage are regarded as generalized energy storage resources together, and a peak-shaving model of generalized energy storage is constructed; secondly, a peak-shaving model of thermal power units is constructed according to the peak-shaving operation status of thermal power units; finally , in order to deal with the uncertain factors in different scheduling stages of the system, and to explore the peak-shaving characteristics of generalized energy storage resources at different time scales, a day-intra-day two-stage rolling peak-shaving model was constructed. It has the advantages of being scientific and reasonable, strong applicability and good effect.

Description

technical field [0001] The invention relates to the field of energy technology, and is an optimal scheduling method considering the joint peak regulation of generalized energy storage and thermal power. Background technique [0002] The high proportion of renewable energy connected to the grid has become an inevitable trend in the development of the power grid. Its volatility, anti-peak characteristics and prediction errors have gradually increased the demand for peak regulation in the power system. The peak regulation of the traditional power system mainly relies on thermal power units, but its regulation speed and range are limited, and the economy is poor, which can no longer meet the peak regulation requirements of the future power system with a high proportion of renewable energy. [0003] The proportion of flexible loads in the current power system is constantly increasing, and its flexibility and dispatchability can realize energy time shift. It is a reliable resource...

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Problems solved by technology

[0004] At present, some progress has been made in the research on thermal power and generalized energy storage participating in power system peak regulation, but the operating characteristics of various resources in generalized energy storage and the potential for rapid peak regulation are not well explored, and the research on the coordination and cooperation with thermal power units for slow peak regulation needs to be deepened

In addition, most of the current peak-shaving researches are aimed at the day-ahead period, but the prediction accuracy of wind power is related to the forecast cycle, and the scheduling time scales of various resources in generalized energy storage are different, so it is difficult to fully utilize its advantages of fast peak-shaving by using day-ahead scheduling alone , it is also difficult to make accurate scheduling decisions

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