Community energy storage, a critical element in smart grid: A review of technology, prospect, challenges and opportunity

Abstract

Community Energy Storage (CES) has been known as a new generation of energy storage that is a crucial element in smart grid. Its location at the edge of the grid and close to customers offers great benefits compare to energy storage located at substation in terms of smoothening the impacts of intermittent Renewable Energy (RE) resources and diversity of Electric Vehicle (EV) operational characteristics. Power utilities found that CES deployment along with reliable planning and control system can become a smart solution in providing sustainable energy and open new business opportunity. However, despite the benefits, CES deployment in distribution system with the integration of PV and EV may face several challenges. This paper provides an overview of CES, covering technology, prospect, challenges and opportunity in obtaining a reliable smart distribution system with optimal cost. In addition, preliminary simulation works are presented to show the effectiveness of CES in reducing power loss and improve voltage profile compare to a central battery located at substation.

Energy efficiency and peak load management via CVR and distributed energy storage in active distribution grid

“…The second part is power conversion system (PCS) having DC/AC and AC/DC converters through which battery is connected to POC and control blocks. The third part covers the measurements and communication system which monitors, measures the status of connected devices, and sends/receives the control signals to ADMS through advance communication system …”

“…On the other hand, distributed energy storage (DES) especially community energy storage (CES) also draws attention due to inherit benefits such as peak load management, demand balancing, and voltage regulation in distribution network operations. [4][5][6][7] However, most utilities are performing either CVR or CES operation individually. Acknowledging the potential benefits of CVR and CES, there is a need to explore a more accurate method to analyze the CVR impact in association with CES.…”

“…The third part covers the measurements and communication system which monitors, measures the status of connected devices, and sends/receives the control signals to ADMS through advance communication system. 4,31 The three-layered intelligent control approach is best suited for CES operation. The first layer deals with centrally controlling of energy management system.…”

“…For peak load reduction, CVR approach is quite useful, therefore distribution network operators (DNO) are also preferring this method. On the other hand, distributed energy storage (DES) especially community energy storage (CES) also draws attention due to inherit benefits such as peak load management, demand balancing, and voltage regulation in distribution network operations . However, most utilities are performing either CVR or CES operation individually.…”

Virtual Inertia Adaptive Control of a Doubly Fed Induction Generator (DFIG) Wind Power System with Hydrogen Energy Storage

“…This technology has advantages, such as high energy density, long service life, low operating cost, cleanness, and environmental friendliness. Furthermore, dynamic response characteristics of hydrogen storage systems are much better than traditional energy storage systems [22,23]. In this study, the hydrogen storage technology is applied to wind turbines for the virtual inertia control of wind farms, while maintaining the original operating state of wind power generators.…”