What are the development barriers of user-side shared energy storage system considering diversified flexibility adjustment demands? A novel two-dimensional assessment model

Abstract

User-side shared energy storage system(USESS)is a key technology to centralize and optimize the efficient utilization of decentralized flexible adjustment resources. However, existing USESS has been slow to evolve due to lots of barriers from economy, technology, and so on, which greatly hinders its efficient utilization for satisfying multiple flexibility adjustment demands in the new power system with renewable energy as the main body. This paper aims to explore critical barriers of USESS through a novel structure-impact two-dimensional barrier identification, evaluation and response strategy system considering power-type and energy-type flexibility demands. Firstly, an original barrier system is screened from the perspectives of economy, technology, business model, society and government policies including 14 secondary barriers. Secondly, a novel structure-impact key barriers identification model is proposed based on fuzzy interpretive structural model-decision-making trial and evaluation laboratory(ISM-DEMATEL)approach so as to scientifically achieve multidimensional key barriers quantification for USESS. Results indicate that high initial investment costs, high operation and maintenance costs, and energy storage operation safety barriers are critical in energy-type scenarios, while high initial investment costs, immature technology of energy storage equipment and inadequate regulatory mechanisms are top three critical barriers in power-type scenarios. Finally, corresponding policy measures are formulated to mitigate or eliminate these key barriers. Since USESS barrier has not been deeply studied yet, this paper contributes to literature and expands knowledge.