scholarly journals Operating Experiences with an Advanced Fabric Energy Storage System

2012 ◽  
Vol 4 (2) ◽  
pp. 1-10 ◽  
Author(s):  
R.J Fuller
Keyword(s):  
Energy Storage ◽  
Energy Use ◽  
Storage System ◽  
Energy Storage System ◽  
Research Literature ◽  
Cold Climate ◽  
Operational Mode ◽  
University Campus ◽  
Track Record ◽  
Australian Climate

Despite their proven track record in the cold climate countries of northern Europe, there are no reports in the research literature of experiences using advanced fabric energy storage (FES) systems in countries where cooling rather than heating is the main priority. This paper reports some of the experiences with the first known advanced FES system in Australia made over the first full calendar year of operation. It is located in a three-storey building on a university campus in Victoria and has been in operation since mid-2002. Temperature, energy use and operational mode data were recorded during 2003. Airflow measurements through the FES system have been made in five areas of the building. On-going operating problems still exist with the system and this has prevented a conclusive evaluation of its suitability for the southern Australian climate.

scholarly journals Study on a New Operational Mode of Economic Operation of Islanded Microgrids Using Electric Springs

2018 ◽  
Vol 160 ◽  
pp. 04004
Author(s):  
Zhiyu Zhao ◽  
Keyou Wang ◽  
Guojie Li ◽  
Xiuchen Jiang ◽  
Yin Zhang
Keyword(s):  
Power Generation ◽  
Energy Storage ◽  
Renewable Energy Sources ◽  
Storage System ◽  
Peak Load ◽  
Energy Storage System ◽  
Operational Cost ◽  
Operational Mode ◽  
Load Demand ◽  
Economic Operation

With the increasing penetration of intermittent renewable energy sources (RESs) into microgrids, the original operation mode of power generation determined by load demand faces severe challenges due to the uncertainties of the RESs power output. The electric springs(ESs), as an emerging technology has been verified to be effective in enabling load demand to follow power generation and stabilizing fluctuation of RESs output. This paper presents a new mode of economic operation for island microgrids including non-critical loads with embedded electric springs. Its connotation includes that i) the capacity of energy storage can be reduced through the interaction of the energy storage system (ESS) and the electric springs, ii) the electric springs reduce the stress of peak load regulation and operational cost and iii) the demand of microgrids system for ramping ability of generation units is reduced with the buffer of the electric springs. Numerical results show that the coordinated operation between electric springs and energy storage system of microgrids can bring down the investment cost for the ESS and short-term operational cost in the aspect of economic dispatch, reducing requirements for the capacity and ramp ability of the energy storage system in microgrids. Energy buffering can be achieved with lower cost and the load demand can follow power generation in the new operational mode of islanded microgrids using electric springs.

Droop Configuration and Operational Mode Setting of Battery Energy Storage System in Primary Frequency Regulation

2013 ◽  
Vol 448-453 ◽  
pp. 2235-2238 ◽  
Author(s):  
Bo Lei ◽  
Xin Ran Li ◽  
Ji Yuan Huang ◽  
Shao Jie Tan
Keyword(s):  
Energy Storage ◽  
Storage System ◽  
Energy Storage System ◽  
Equivalent Model ◽  
Frequency Regulation ◽  
Operational Mode ◽  
Battery Energy Storage System ◽  
Battery Energy Storage ◽  
Battery Energy ◽  
Primary Frequency

In primary frequency regulation (PFR) using battery energy storage system (BESS), the droop configuration for BESS needs to be considered thoroughly. This paper modified the traditional droop configuration method by considering more BESS`s internal nonlinear constraints and then proposed a variable droop strategy for operation. By doing this, a modified BESS model for PFR was constructed. Finally, the validity of BESS droop configuration method in this paper is testified with a three-area equivalent model based on the data of actual grid. The results show that variable droop strategy is more suitable for PFR than fixed traditional one.

scholarly journals Network and Reserve Constrained Economic Analysis of Conventional, Adjustable-Speed and Ternary Pumped-Storage Hydropower

Energies ◽  
2020 ◽  
Vol 13 (16) ◽  
pp. 4140 ◽  
Author(s):  
Soumyadeep Nag ◽  
Kwang Y. Lee
Keyword(s):  
Energy Storage ◽  
Short Circuit ◽  
Storage System ◽  
Energy Storage System ◽  
Power Markets ◽  
Mode Analysis ◽  
Operational Mode ◽  
Flexible Resources ◽  
Adjustable Speed ◽  
Pumped Storage

With increasing renewable penetration and projected increase in natural disasters, the reliability and resiliency of a power system become crucial issues. As network inertia drops with increasing penetration of renewables, operators search for flexible resources that can help cope with a disruptive event or manage renewable intermittency. Energy storage is a solution, but the type of storage solution needs to be profitable to exist in the current and upcoming power markets. Advanced pumped-storage hydropower (PSH) is one solution that can help cope with such requirements, which will in turn help to increase the renewable penetration in the system. This paper qualitatively compares the revenue earning potential of PSH configurations, including, adjustable-speed PSH (AS-PSH) and ternary PSH (T-PSH) in comparison to conventional PSH (C-PSH) from the arbitrage and regulation markets, with and without the presence of wind penetration. In addition, a framework for quantitative analysis of any energy storage system has been proposed. A 24-bus RTS system is studied with summer and winter variations in load and wind power. Through revenue and operational mode analysis, this paper reveals that T-PSH has the highest revenue earning potential, which is mainly due to its ability to operate with a hydraulic short circuit.

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