Energy-storage-contained power system optimization scheduling method considering thermal power peak regulation initiative and demand response

Abstract

The invention provides an energy-storage-contained power system optimization scheduling method considering thermal power peak regulation initiative and demand response. The method is characterized inthat the peak regulation capability of a power system is fully excavated from the aspects of source, load and storage, and the peak regulation flexibility of the system is improved. Firstly, a demandresponse model is constructed on a load side, and a user is guided to actively participate in load adjustment; secondly, energy storage equipment is configured on the side of the thermal power plant to assist the peak regulation thermal power generating unit to participate in peak regulation auxiliary service of the power system together, and the peak regulation depth of the thermal power generating unit is increased equivalently; and finally, on the basis of considering the thermal power generating unit peak regulation cost and peak regulation compensation, thermal power generating unit peakregulation initiative constraints are added, and an optimal scheduling model considering the thermal power peak regulation initiative is constructed by taking the optimal system economy and the minimum wind curtailment rate as target functions. The method has the advantages of scientificity, reasonability, high applicability, good effect and the like.

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, which considers thermal power peak regulation initiative and demand response. 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 ...

AI Technical Summary

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

Images