Capenhurst, United Kingdom
Capenhurst, United Kingdom

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O'Brien D.,EA Technology
IET Conference Publications | Year: 2013

The article presents development and implementation of an integrated asset risk prioritisation (ARP) tool on UK power networks. Asset Risk and Prioritisation (ARP) builds upon existing methodology of Condition Based Risk Management (CBRM) and shift of strategy from pure replacement to include refurbishment / asset life extension and more focus on TOTEX.


Wilson S.D.,EA Technology | Samuel J.,Renewable Energy Dynamics Technology Ltd. | Simmonds G.,Renewable Energy Dynamics Technology Ltd.
IET Seminar Digest | Year: 2013

The areas of the United Kingdom that are best suited to renewable energy generation tend to be away from population centres. Here, electricity networks increasingly find themselves having to limit renewable energy ambitions; often there is no simple solution. Given the long life of many network assets, change is either slow or expensive. The wholly community-owned Isle of Gigha in Scotland today finds its renewable energy ambitions limited in this manner. This case study sets out the rationale for an Energy Storage solution for this community that would enable increased renewable energy capacity, yield and value; with the potential to explore many of the other benefits cases attributable to Energy Storage at the weak edge of the electricity network. In March 2013 this project was awarded Feasibility Stage funding under the Department for Energy and Climate Change's Energy Storage Demonstration Programme[1].


Nygaard B.E.,Met.no | Horsman D.,EA Technology | Wareing J.B.,B. Wareing. Technology | Tucker K.,Nalcor
44th International Conference on Large High Voltage Electric Systems 2012 | Year: 2012

This paper demonstrates the potential of using modern methods for weather forecasting to assess detailed weather and climatic conditions along right-of-ways for electric overhead lines in remote areas, especially in complex mountain topography where no such data are available for the design of overhead lines. The model used is the university developed "Weather research and forecasting model", called the WRF model. This meso-scale model describes the physical and dynamic processes in the atmosphere at greater details than conventional weather forecasting models normally do. By using a nesting technique such models can transform the global weather situation into detailed descriptions of important weather parameters like wind and icing conditions for local overhead lines, with a spatial resolution adequate for the span lengths of such lines. The model has been applied mostly for quantitative assessments of rime (in-cloud) ice loads, but it is also applicable for studying wet snow loads and freezing rain. Also for historic failure studies such models are very useful. By using this model for special transmission line projects it is possible to identify locations where severe icing may occur, and also how the topography influences local icing conditions and hence give credibility to alternative line routes where such severe icing will not occur, or is much less likely. By selecting a variety of potential icing cases from regular meteorological data bases, it is possible to get detailed impressions of local icing conditions under different wind and humidity conditions, and hence assist significantly to select ice loadings for design of new lines in such areas where no relevant data are otherwise available. This approach is greatly enhanced if supplementary measurements can be done in parallel. This model has been applied now several times for such purposes, as is demonstrated in this paper. The WRF model is now also being combined with conventional accretion models for wet snow to revise maps of design ice loadings for the UK.


News Article | October 13, 2016
Site: cleantechnica.com

Batteries are going to get bigger. They are going to charge faster. People will become more comfortable with the range of new electric cars. “Electric Nation” brings well over 500 EVs together —  to all charge at once — as an expression of the future to come. As I pull into an empty spot for EV charging, next to another empty spot for EV charging, I do wonder: When more people do catch on and find out how smooth it is to drive electric, will it be this easy? Will more electric cars charging all at once overload the grid? What happens when everybody is plugging in their car at a similar time? Will there be blackouts? Robert Llewellyn talks to others — with a lot more to offer — who are wondering as well. Who is going to keep balancing the electric power energy grid? What is vehicle-to-grid technology? Electric Nation is a project to find out what happens when hundreds of electric cars all plug in at the same time and to prepare for the EV revolution. The Electric Nation project is being hosted by Western Power Distribution. It is being delivered by a partnership of EA Technology, DriveElectric and Lucy Electric Gridkey. The project is funded via Ofgem through its Network Innovation Allowance scheme. The project aims to provide local electricity network operators with the tools to be able to ensure that their networks can cope with this massive new challenge, whilst avoiding replacing cables and substations. Robert Llewellyn, as animated and thoughtful as ever explored the topic in his most recent episode of Fully Charged. He interviewed some participants at the Cenex Low Carbon Vehicle Event 2016 in the UK. Check it out: Buy a cool T-shirt or mug in the CleanTechnica store!   Keep up to date with all the hottest cleantech news by subscribing to our (free) cleantech daily newsletter or weekly newsletter, or keep an eye on sector-specific news by getting our (also free) solar energy newsletter, electric vehicle newsletter, or wind energy newsletter.


Wilson S.D.,EA Technology | Stewart P.,University of Lincoln | Stewart J.,University of Lincoln
IET Electric Power Applications | Year: 2012

Real-time thermal management of electrical machines relies on sufficiently accurate indicators of internal temperature. One indicator of temperature in a permanent-magnet synchronous motor is the stator winding resistance. This study applies two current injection techniques to a commercially produced permanent-magnet servomotor, which are applicable under load and cause minimal disturbance to the shaft torque. The current injection techniques applied here enable the temporary boosting of resistive voltage and consequent application to low-resistance, high-voltage machines. The effectiveness of the approach is demonstrated by tracking the change in winding temperature during a 2 h load cycle. © 2012 The Institution of Engineering and Technology.


Wilson S.D.,EA Technology | Brogden D.C.,Scottish and Southern Energy Power Distribution | Hopkins B.,Scottish and Southern Energy Power Distribution
IET Seminar Digest | Year: 2013

Great-Britain's unique Radio Teleswitch System (RTS) was developed in the 1970s, deployed en-masse by the Electricity Industry during the 80s and 90s. Today it controls electric storage and water-heating in homes numbering in the low millions. The need for its development mirrors the conditions of the near future, where much generating plant capacity will close and there will be a great expansion of electric heating in the form of heat-pumps. The system allowed this expansion to occur while limiting its economic impact on generation, transmission and distribution networks. This is as relevant today as it was in the past and provides functionality that the Smart Metering System (SMS) must duplicate, or else trigger network investments and higher costs for consumers.


Gillie M.,EA Technology | Nowell G.,EA Technology
IET Conference Publications | Year: 2013

Electric vehicles are becoming more commonplace on our streets, and already, small pockets, or 'clusters' of EV owners are forming. If clusters of EVs on one feeder all charge during the normal peak electricity demand, this could overload feeders resulting in network operators having to implement costly reinforcement. However, during off peak times there is existing capacity on local feeders. A system to allow direct control of charging of EVs has been developed called Esprit. To test the system, clusters of EVs need to be 'created'. This is being carried out via the Ofgem Low Carbon Networks Fund project 'My Electric Avenue' (I2EV). In return for a reduced monthly charge on an 18 month lease, participants will allow their EV charger to be controlled, data to be collected and will provide feedback on their experience. The success of this trial relies on close working between Distribution Network Operators, technology developers, communities, EV manufacturers, academics and car leasing companies.


Hughes D.,EA Technology | Barnfather P.,EA Technology | Harrison A.,EA Technology
IET Conference Publications | Year: 2013

Over the past 12 years the authors and colleagues at EA Technology have worked with Electricity Distribution and Transmission companies in many countries developing and applying asset based risk models to assist with planning and justifying investments. Initially the work concentrated on building detailed asset models that quantified the risk (expressed as £, $ or €) arising from deteriorating asset condition (Condition Based Risk Management, CBRM). Over the past 2 years the authors have continued the development of the methodology by applying it to the quantification of load related risk and have succeeded in creating a process that combines load and condition based risk. The essential output from the combined model is a measure of risk (expressed as £, $ or €) now and in the future, reflecting both the changing condition of the assets and changes in load. Potential interventions, replacement of assets or reinforcement of the network can then be factored in and the resulting risk re-quantified. This provides the means to compare the cost benefit of different potential interventions and ultimately to justify specific investment plans (using NPV or similar financial analysis).


Dudek E.,EA Technology
IET Seminar Digest | Year: 2015

Introduction Efficiency and value of storage System Integration Difficulties in estimating state of charge and degradation Practical issues and future work. © 2012 BSI. All rights reserved.


Roberts D.A.,EA Technology
IET Seminar Digest | Year: 2010

Presents a collection of slides covering the following topics: generation intermittency management; transmission interface management; distribution interface management; smart metering benefits maximization; and domestic consumption management.

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