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Line side traction supplies reduce the power-weight ratio of transport, and in this way the efficiency of electrified railways has dominated the twentieth century.
As the labour costs of infrastructure installation become more significant the economics of electrification is changing. At the same time, electricity storage has become commonplace, and battery car technology is set to revolutionise car technology, so storage of energy on board trains may yet again become an efficient option.
The optimum approach of storage versus distribution needs to be a factor in all future design. Integration of on-board and line side storage and the integration of electric car and the wider changes to distribution networks need to be considered.
Network Rail is now looking at future architectures of integrated energy systems, with storage. The key challenge of design simulation systems and techniques have been addressed by development of new and innovative analysis systems.
This lecture will look at the technology and changes in design approach to facility this new, integrated approach to transport energy. It will look at how this can be applied to both main line railways and urban transport systems, and how this forms the basis of a future smart transport energy network.
This lecture is co-hosted with IET, EI and IMechE
Dr Dave Hewings has over thirty years experience of power systems design and operation, with over twenty five years relating to electrification and traction power system design. Between 1995 and 2002 Dave was an engineering consultant within the UK railway industry, specifically in the fields of EMC and electrification/signalling electrical interfaces, and in electrification design.
In 2002, he led the system design of the first multi-track autotransformer electrification system in the UK and as part of that developed the methods and tools now used within Network Rail for modern electrification system design. From 2013 Dave held the position of Head of Energy Network Strategy within Network Rail, leading the electrification system design for the national electrification programme, and, in particular, focusing on technology introduction associated with integrated protection and control technology (IEC 61850) and rationalisation of distribution equipment to optimise future traction power supplies.
Dave has led the traction power system design for electrification of the Great Western Main Line between London and Cardiff since 2009. He now also leads the implementation team in Wales preparing for the changes of an electrified railway, whilst continuing to develop improved approaches to electrification, in particular the concept of integrated energy networks for future systems.