Improving electricity network utilisation with distributed energy storage systems

Sunzu, Tony Bonaventure (2014) Improving electricity network utilisation with distributed energy storage systems. [USQ Project]

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Abstract

Network capacity utilisation is the ratio of the average energy demand to the installed capacity required to meet peak demand. Network capacity utilisation is one of the biggest problems faced by network operators in Australia and around the world. As a response to high peak demands, network operators expand the generation and network capacity. This results in large investments in infrastructure that only operates a couple of hours annually. Investment and operation costs of the underutilised infrastructure are passed on to customers through increased energy prices. Accordingly, there is a need to control peak demand, and distributed energy storage systems hold promise for this application.

The immediate objective of this research project is to improve utilisation of network assets in an urban area with distributed energy storage systems. The NSW network was analysed under both winter and summer conditions to determine the size of the peak demand and the unused network capacity during the off peak period that could be used for charging energy storage systems without creating a peak. The minimum number of households required to be programmed to use energy storage systems during peak periods in order to avoid the network peak demand and the maximum number of households that the network could charge in the off peak period without creating a peak demand were determined. A model was developed to evaluate the effectiveness of distributed energy storage systems on the NSW network. A power flow analysis was conducted to analyse the voltage regulation capabilities of distributed energy storage systems at demand nodes on the network.

Analysis and simulation results showed that distributed energy storage systems are a viable solution to improving network capacity utilisation.


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Item Type: USQ Project
Item Status: Live Archive
Additional Information: Bachelor of Engineering (Electrical and Electronic) project.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering
Supervisors: Bowtell, Leslie
Date Deposited: 09 Sep 2015 05:16
Last Modified: 09 Mar 2016 05:28
Uncontrolled Keywords: distributed energy storage systems; high energy demands; peak periods; New South Wales
Fields of Research : 09 Engineering > 0906 Electrical and Electronic Engineering > 090607 Power and Energy Systems Engineering (excl. Renewable Power)
URI: http://eprints.usq.edu.au/id/eprint/27311

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