With the development of energy storage technology and sharing economy, the shared energy storage in integrated energy system provides potential benefit to reduce system operation costs and carbon emissions. This paper presents a bi-level carbon-oriented planning method of shared energy storage station for multiple integrated energy systems.
Firstly, the energy-carbon relationship of the multiple integrated energy systems is established, and the node carbon intensity models of power grid, integrated energy system and shared energy storage station are established. Secondly, a bi-level planning model of shared energy storage station is developed.
Capacity planning model of shared energy storage station The capacity planning model of SES station includes objective function and constraints, and the specific model is as follows. 3.1.1. Objective function In the upper planning stage, the SES station in the multi-IESs system is to improve the system economy and reduce carbon emissions.
Secondly, a bi-level planning model of shared energy storage station is developed. The upper layer model solves the optimal capacity planning problem of shared energy storage station to minimize average emission reduction cost in a long time scale.
The carbon sub-system includes the carbon capture and storage (CCS). The SES station operator can provide sharing energy storage service for various IESs by signing a service agreement with each IES operator. The service agreement includes the maximum power and energy, and the service fee of each IES to the SES station.
Compared with the energy storage planned separately for each IES, it is more economical to provide energy storage services for each IES through SES station, the carbon emission reduction rate has increased by 166.53 %, and the system operation cost decreases by 33.48 %.
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