An optimal scheduling method for power systems with energy storage considering the initiative of thermal power peak regulation

Abstract

The present invention proposes an optimal scheduling method for a power system with energy storage that considers thermal power peak regulation initiative and demand response. flexibility. First, build a demand response model on the load side to guide users to actively participate in load adjustment; secondly, configure energy storage equipment on the thermal power plant side to assist peak-shaving thermal power units to participate in the peak-shaving auxiliary services of the power system, which is equivalent to adding thermal power units Depth of peak shaving; Finally, on the basis of considering the peak shaving cost and peak shaving compensation of thermal power units, the peak shaving initiative constraints of thermal power units are added, and the optimal system economy and the minimum wind abandonment rate are taken as the objective function to construct An optimal scheduling model for peak aggressiveness. 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 relates to an optimal scheduling method for a power system with energy storage considering the initiative of thermal power peak regulation. Background technique [0002] With the continuous increase of wind power grid-connected scale, the volatility of wind power, anti-peak characteristics and large prediction errors increase the peak-to-valley difference of the power system, and put forward higher requirements for the peak-shaving capability of the power system. At this stage, the peak regulation of the system mainly relies on the conventional peak regulation of thermal power units. When the load peak-to-valley difference is large, deep peak regulation is required to meet the consumption of new energy and balance load fluctuations. peaking demand. [0003] From the source point of view, adopting a ladder-type peak-shaving compensation mechanism, considering the changes in the interests of a...

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Problems solved by technology

[0004] At present, some progress has been made in researching the peak regulation of the power system from three aspects: source, load and storage. According to the current research, there is still room for improvement of the peak regulation capability of the system: 1) On the source side, most of the deep peak regulation for thermal power units The study only considers simple compensation issues, ignoring whether wind farms and thermal power plants can jointly obtain profits from peak shaving transactions, and whether they are willing to actively participate in peak shaving and the depth of peak shaving; 2) on the load side, user satisfaction can be considered 3) In terms of energy storage, most of the energy storage equipment is used alone to adjust the power fluctuation of the system, which has great requirements on the capacity and service life of the energy storage, and cannot Taking into account the economy and service life of energy storage devices

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