Evaluating the benefits of an electrical energy storage system in a future smart grid

Abstract

. (2010) 'Evaluating the bene ts of an electrical energy storage system in a future smart grid.', Energy policy., 38 (11). pp. 7180-7188. Further information on publisher's website:http://dx.doi.org/10.1016/j.enpol.2010.07.045Publisher's copyright statement: NOTICE: this is the author's version of a work that was accepted for publication in Energy policy. Additional information:Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-pro t purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. AbstractInterest in electrical energy storage systems is increasing as the opportunities for their application become more compelling in an industry with a back-drop of ageing assets, increasing distributed generation and a desire to transform networks into Smart Grids. A field trial of an energy storage system designed and built by ABB is taking place on a section of 11kV distribution network operated by EDF Energy Networks in Great Britain. This paper reports on the findings from simulation software developed at Durham University that evaluates the benefits brought by operating an energy storage system in response to multiple events on multiple networks. The tool manages the allocation of a finite energy resource to achieve the most beneficial shared operation across two adjacent areas of distribution network. Simulations account for the key energy storage system parameters of capacity and power rating. Results for events requiring voltage control and power flow management show how the choice of operating strategy influences the benefits achieved. The wider implications of these results are discussed to provide an assessment of the role of electrical energy storage systems in future Smart Grids.

Battery energy storage systems for the electricity grid: UK research facilities

“…Harmonic compensation and voltage control, by power factor correction are also achievable. Power flow management may be used to correct for short duration faults, to longer term weather and seasonal variations in load and generation [10].…”

“…Capacity firming by providing a power buffer to ensure economic despatch [20], allowing generators to avoid financial penalties on despatch bids [21]. Price arbitrage to take advantage of price difference in the free energy market [18], backup power for emergency or selective islanding [10], and the time shifting of energy which may be used for peak shaving.…”

“…To really drive the installation of network storage capacity the BESS must offer a good financial return to investors, with income outstripping the devaluing, or aging, of the main asset, the battery. The business case for energy storage requires value to be accrued from multiple grid services [10]. Therefore the challenge is to optimise the BESS control to provide multiple services while minimising battery aging.…”

Regulatory and financial hurdles for the installation of energy storage in UK distribution networks

“…Although this may have positive impacts for network operators, such as reduced losses, there is a risk of negative effects such as reverse power flow, voltage fluctuation and power quality problems [2,3]. Electrical Energy Storage (EES) is seen as one way of addressing these problems and benefits include upgrade deferral through peak shaving, voltage control, power flow management, post fault restoration, energy market arbitrage, network management, and loss reduction [4,5]. A combination of these benefits could make EES an attractive technology to Distribution Network Operators (DNOs) by enabling improved efficiency, and fulfilment of commercial and regulatory requirements in the UK.…”

A review of pumped hydro energy storage development in significant international electricity markets

“…Bulk EES also has many other benefits throughout the electrical supply chain, and several studies have discussed these [2]Ð [4], [12]Ð [15]. They include:…”