Log in
Research conducted by Glasgow Caledonian University (GCU) has changed the way power cables and motors are monitored in EDF Energy's nuclear power stations in the UK and Wuhan Electrical Power Company, China, providing the companies with innovative techniques enabling them to identify insulation defects and improve their maintenance programme. Application of the research output has helped the companies to enhance practice in PD testing, reduce maintenance and repair costs by millions of pounds whilst reliably supplying over 20% of the UK's power generation, and an area with over 10 million people in China.
Condition monitoring instrumentation for high voltage plant has been developed at GCU under contract research for Doble Engineering (Headquarters in MA, USA), a global service provider for the electric power industry. The instruments are an important new line of products for Doble providing increased sales revenue and service provision. The instruments have been widely adopted by Doble's global client base to provide improved asset management. Other beneficiaries of the work include global contract electronic manufacturing companies. In 2012 Doble invested £1.2 million in an Innovation Centre at GCU to support their product development road map.
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:
The underpinning research has led to a methodology for cost-effective monitoring systems to interpret complex and emergent conditions in real-world applications. There are ten different organisations utilising the technology, benefitting the UK economy and health care provision, both nationally and internationally. These include MAST Group Ltd, Electricity North West Ltd, TMMHRC (India) and the Milestones Trust (Bristol). The impacts are (i) Economic: improving business capabilities and UK company profit margins (ii) Societal: benefiting health sector organisations in India and in the UK through improved diagnosis and care for the elderly and vulnerable; and (iii) Environmental: reducing waste and carbon footprint.
New commercial gas sensing technology developed from research at the University of Strathclyde brings extensive technical, operational, safety and cost benefits to applications such as mine safety and leak detection in methane production, storage, piping and transport systems. World-wide commercial sales (in Japan, China and the USA) began in late 2010 through a spin out company, OptoSci Ltd. Sales are growing and have amounted to a total of £250k since launch plus a customisation contract for £193k, leading to jobs sustainability and growth. In addition to economic impacts, the technology also brings health and safety benefits in the gas distribution and mining industries through human safety assurance in the event of gas leaks / build up.
Cardiff University's research in acoustic emission monitoring and refined data analysis has been applied to large, complex structures and has subsequently transformed the inspection processes of concrete and steel bridges. This has been commercialised by Mistras Group Ltd. to provide a safer, more reliable and progressive means of bridge monitoring, enabling the company to acquire a global reputation and increase its turnover to £7.5M per year — £5M relating to Cardiff research. Cardiff's innovations have had major international impacts (in UK, Europe, India and USA) through:
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.
Analysis of partial discharges for management of high-voltage assets has become commercialised in the last 20 years. Work at the University since 1993 has improved asset management techniques used by companies world-wide. This was achieved in two ways: first, improving power network reliability, enabled through two start-up companies employing 59 people and turning over £5m/annum; and second, by providing techniques for testing and verifying safety of new electrical power components for aerospace applications (e.g. A380). In four illustrative case studies, over £3m savings are identified for end-users through improved reliability of power networks. Further impact has been delivered by ensuring the reliability of power networks in aircraft.
A team at the University of Sunderland has undertaken research into equipment maintenance for over 20 years. This has been undertaken within a series of funded UK and EU projects. The work of the team has resulted in a new model for maintenance strategy, and the development of novel artificial intelligence algorithms to monitor the condition of key factory assets. A series of software tools have been developed in collaboration with industrial partners. These tools and the strategic model have been tested in industrial settings and have had impact in the UK, across the EU, and internationally.
The power systems laboratory at the University of Aberdeen has developed new converter topologies that have applications in connecting MW size DC power sources with DC transmission/distribution grids. These converters resolve very challenging questions of fault isolation on high-power DC networks. Scottish Enterprise funded a proof of concept project which developed a prototype, and confirmed the feasibility for various applications with interconnecting renewable power sources. Impact from the research is ongoing. Initial impact has been on public policy and services, where policy debate has been informed by our research evidence; and where decisions, regulations or guidelines have been informed by our research. Impact has also been generated for practitioners and professional services, where both a professional body and a company have used research findings in the conduct of their work, their practices have changed, and new or improved processes have been adopted as a direct result of research findings.
The technology has attracted the attention of George Adamowitsch, European Coordinator for the working group for offshore and onshore grid development. He has described the Aberdeen research in his annual report to EU parliament in 2010, and the lead academic, Professor Dragan Jovcic, now sits on the Working Group for onshore/offshore grid development, developing plans for the European DC supergrid. In addition, this research has contributed to Working Group B4.52 of the International Council on Large Electric Systems (CIGRE), and their major technical brochure "HVDC Grid Feasibility study". Finally, the research has been analysed by the French power company RTE (Réseau de Transport d'Electricité). As a result of the research findings the company has adapted their approach to the planning of major offshore wind farm developments, resulting in a re-definition of the company research and development strategy.