Combined Operation Strategy of CHP Unit and Heat Accumulator for Eliminate Abandoned Wind under “Double Carbon” Background

doi:10.11930/j.issn.1004-9649.202203113

Abstract

Abstract: Under the background of “double carbon” goal, a strategy of combined operation of thermoelectric units and heat storage is proposed to eliminate abandoned wind, in view of the large number of wind curtailment problems existing in the winter heating period in the “Three North” area. Based on the analysis of the electrothermal operation characteristics of thermoelectric units, the mechanism of wind curtailment in the “Three North” area during the winter heating period is deeply studied, the influence of heat storage configuration on the peak shaving capacity of thermoelectric units is analyzed, and the operation mechanism of combined operation of thermoelectric unit and heat storage is discussed. Further, the strategy of thermoelectric unit and heat storage combined operation for air consumption and disposal is formulated. A comprehensive scheduling model of electric heating including thermoelectric unit, thermal storage system, thermal power unit and wind power unit is established. Compared with the traditional model, the proposed model takes into account the dual energy balance of heat and electricity in the system. The objective function of the solution process is to minimize the total coal consumption of the system. The calculation results show that the thermal storage configuration of the thermoelectric unit can effectively decouple its operation constraints of “ordering power by heat”, increase the peak shaving capacity of the system, and reduce the waste wind volume.

Key words: double carbon, thermoelectric unit, heat storage system, peak regulation, eliminate abandoned wind

CAO Yu, FANG Lei. Combined Operation Strategy of CHP Unit and Heat Accumulator for Eliminate Abandoned Wind under “Double Carbon” Background[J]. Electric Power, 2022, 55(10): 142-149.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.202203113

https://www.electricpower.com.cn/EN/Y2022/V55/I10/142

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