Summary of the impact

The Leicester Variwave project, in relation to electrostatic dust precipitation, utilises a novel high voltage, high frequency, high power transformer within the power supply, which has enabled cuts in industrial emissions of ~50 per cent and considerable cost savings. Most new-build power stations and many other industrial sites now use technology based on that developed in Leicester. As well as fly ash and dust, the technology has the ability to trap sub-micron particulates thought to be partly responsible for the increase in the number of asthma cases during the past few decades. The MD of [text removed for publication] states `Through publications made by ...Leicester ...we were interested to learn how the team designed their high voltage transformer, and how that transformer operated with the high frequency, high power switched-mode electronics. They achieved that `Holy Grail' combination [of high voltage, frequency, high power] in a 70 kW switched-mode power supply (SMPS) running at 20 KHz and at 50 kV. The publication in the IEEE Transactions on Power Delivery was very helpful, and enabled us to choose the direction when pushing the design boundaries in developing our own high power, high voltage technology for electrostatic precipitators'. Dr Devine, a key member of the Leicester team between 1995 and 2000, was employed by [text removed for publication] in 2001 purely on the basis of his knowledge of Variwave. [text removed for publication] now have 200 units in operation. In 2002 Dr Devine was head-hunted for his knowledge of Variwave and moved to [text removed for publication], who also developed commercial units. The uptake of the technology has been growing steadily since 2001. Exemplar data from one company on the associated reduction in emissions shows 195 switched mode power units installed in boiler plants worldwide by 2004 gave a reduction of around 60%. A 60% reduction in emissions is equivalent to a reduction from 40 mg.m^-3 to 16 mg.m^-3 of flue gas particulates. Since 2004 to date there are now estimated to be at least 5000 units installed worldwide.

Summary of the impact

The Power Systems research team at Imperial made pivotal contributions in the design of power transmission networks, the equipment within these networks, and non-conventional electricity systems. Since 2008, the impact of their research has been to:

I1) influence government policies by contributing to House of Common Select Committee (2010);

I2) support the Fundamental Review of Supply Quality and Security Standards;

I3) assist National Grid in defining new investment affecting £3bn worth of network assets now approved by the regulator (2013);

I4) provide tools to develop the first offshore networks design standards in 2008, saving an estimated £500m by 2013 to date and a projected overall saving of £1-2bn by 2020;

I5) advance Alstom's design concept for next generation HVDC converter stations for offshore wind connection from TRL 1 in 2009 to TRL 4 in 2013 supported by 3 new patents;

I6) enable UK Power Network to plan network investment of £1.18bn and make savings of £130m (2013) through applying new technologies and demand response;

I7) facilitate a scheme for off-grid energy kiosks for electrification in rural Africa yielding social gains and a business opportunity.

Summary of the impact

The supply of electrical energy to centres of demand is an increasingly important issue as our power generation sources decarbonise. Without innovation in our use of high voltage cables, security of supply to our major cities cannot be guaranteed. Our research has:

• Identified how outdated international standards governing the rating of power cables can undermine network performance.
• Developed improved rating methods which will save National Grid £1.2 million annually.
• Informed new international technical guides.
• Designed, in conjunction with major industrial partners, cables that optimise transmission for lower operational costs, minimise the risk of network failure and cut carbon emissions.

Summary of the impact

Research at the University of Strathclyde between 2003 and 2008 directly produced the following impacts from 2008 onwards: 10 wind farms (17 MW aggregate capacity) connected to the Orkney power network from 2009 to 2013 with accompanying economic and environmental benefits; Orkney power network reinforcement deferral saving of £30M from 2009 with repeat deployments of Active Network Management (ANM) technology in other UK power networks; spin-out company formed in September 2008 with total revenues to date of £6.1M, equity investment totalling £3.5M and 35 FTE jobs created; provision of new power system options for long term network plans impacting the 2013 investment decisions in distribution network companies; contribution to the emerging Smart Grid business sector in the UK and overseas from 2008.

Summary of the impact

The invention of a novel component-based model and approach for rapid distributed software development are the core research results for this case study. Using our methodology we have built a fully functional platform — the Grid Integrated Development Environment (GIDE) — which has been used for the development of user applications by several industrial partners. The main economic impact of our work is the new component-based development process resulting in much higher productivity and shorter development cycle. In addition, the four new international standards approved by ETSI provide impact on the wider professional community in the areas of grid and cloud computing.

Summary of the impact

Innovative research at Strathclyde University, embodied in its spinout Diagnostic Monitoring Systems (DMS) Ltd, has enabled the Glasgow-based company to become the premier supplier of ultra-high frequency (UHF) systems for detecting harmful partial discharge (PD) activity in high-value gas insulated substations and power transformers. Annual sales rose from £6.7M in 2008 to £11M in 2012, and its staff doubled to 56 employees. DMS' equipment is utilised in 27 countries, with total exports over 2008 - 2013 exceeding £45M. A sustained partnership with Strathclyde has yielded new sensor technologies and secured mainstream international recognition for UHF PD detection techniques, which are being incorporated within a new IEC standard. Economic value of Strathclyde's UHF technology was further emphasised in 2009 when DMS was acquired by Qualitrol, part of the US $46B Danaher Corp that owns numerous global engineering brands including Tektronix, Fluke, Leica Microsystems and Gilbarco Veeder-Root.

Summary of the impact

Prof Irving and Prof Sterling of the Institute of Power Systems at Brunel University collaborated with National Grid (NG) to develop and deploy a Sparse Dual Revised Simplex (SDRS), optimisation engine for real-time power allocation of all generators that were controlled by the NG. Since 2005-6 NG has been using the algorithms to aid in operation of their Balancing Mechanism, which provides a means of adjusting the level of production or consumption of individual generators or demands in the British Electricity Trading and Transmission Arrangements (BETTA). The algorithms enable the Balancing Mechanism (BM) to efficiently adjust outputs of generators in real time in order to balance the demand for electricity at minimum cost. Therefore, providing economic balancing of the transmission system at a scale of 2-3% of the £5bn annual electricity market (approximately £100M-200M per annum), hence about £800 million has been optimally traded in total in the BM since 2008. It is also important to acknowledge the reliability of the algorithms and SDRS optimisation engine from 2006 to present day, as periods of software outage carry high operational costs. The algorithms developed at Brunel continue to have very significant real world impact in terms of financial volume and its reach, such that every transmission scale power generator in the UK participates in the balancing mechanism and by implication every electricity-user benefits.

Summary of the impact

Research by the University of Cambridge Department of Engineering (DoEng) on high-reliability micro-inverters for use in solar power systems was commercialised by DoEng spin-out company Enecsys Limited. Since 2008, Enecsys has attracted GBP34M in private investment, increased its number of employees from 7 to 75 people across three offices in Europe, North America and Asia-Pacific, and shipped more than 150,000 micro-inverter units. Its revenue in financial year 2012/13 was USD11.7M. Solar power installers have confirmed that Enecsys' products, in comparison with traditional string inverters, are: easier, cheaper and safer to install; more reliable; and able to extract more energy from an array of solar panels. Enecsys products are also changing the market for solar power with simple plug-in solutions that home owners buy from retailers and install themselves.

Summary of the impact

Practical Waveform Engineering, developed at Cardiff, is having a major impact on how modern- day microwave power amplifiers are designed, delivering real competitive advantages for global communications companies such as Nokia-Siemens-Networks and M/A-COM.

Economic impact is through reduced time-to-market and lower design costs, leading to high- performance power amplifier products. Examples include $40M revenue and employment of additional staff for M/A-Com, and the successful spin-off company Mesuro Ltd., generating revenue in excess of £2.5M.

Impact on practice is through successful demonstration of new device technologies and amplifier architectures, the introduction of PWE-based CAD models, and most significantly, the introduction of the "Cardiff Model" into mainstream simulation tools.

Environmental Impact is by improving the efficiency of power amplifiers and significantly reducing the carbon contribution of mobile communications systems, translating into savings of approximately £2.5M/year and a 17 kiloton reduction in CO₂ emission for a typical EU network.

Summary of the impact

Electrical power companies are tasked with operating a highly reliable and robust power system. Electrical power outages (blackouts) have serious consequences for the companies concerned as well as society. The health of electrical insulating materials is critical for the reliability of these systems as it often determines equipment lifetime.

Leicester was the first to demonstrate experimentally that polymer based nanocomposite materials could increase the service life and reliability of electrical insulation as used in high voltage power transmission systems. Its research has also led to the development of measurement techniques to assess the health and the extent of thermal ageing of HV power cables.

National Grid has used Leicester's research findings to manage and monitor its electricity transmission equipment, with resulting impacts on its safety, efficiency and financial economy. Borealis, a major international supplier of insulating materials has used the research to solve manufacturing problems and to set up test facilities for medium voltage cables. A Knowledge Transfer Partnership with Alstom Grid has led to the the establishment of a £1M commercial size HVDC cable test facility which has attracted £0.5M investment from cable manufacturers worldwide.