Summary of Presentation:

Transnational changes in market conditions for T&D equipment have forced manufacturers to merge into large companies and change the way that they source materials and both design and manufacture their products. Many small and large networks have changed ownership or have been purchased by larger utilities, often from another country. This "keynote" assesses the changes in market conditions and how both manufacturers and purchasers must respond to the changes.

Summary of Presentation:

The lecture will outline the selection of a cable system, from conductor, dielectric and protection system through to installation method and choice of accessories, identifying factors that will influence each choice. It will then indicate modern trends in on-line monitoring of cable systems for performance and integrity and identify some possible future technologies.

Summary of Presentation:

What always amazes me is that the main insulation medium used in high voltage engineering is the same atmospheric air that we breathe. The presentation looks at the processes that can turn this insulant into an excellent conductor. These processes involve electron avalanches, the formation of streamers and leaders that bridge the insulating air gap.

Summary of Presentation:

This talk will trace the organisational, structural and technical development of electrical power transmission and HV distribution systems around the world for the last century. The structural models adopted for the organisation of the electricity industry will be examined together with the mechanisms required to ensure security and quality of supply. The talk will conclude with the current developments and organisational challenges facing the industry.

Summary of Presentation>

• Basic Testing and Measuring Techniques
• Digital Measuring Techniques and Evaluation
• Partial Discharge Measuring Techniques

Summary of Presentation:

This presentation covers the design, specification and testing of bushings for high voltage applications. The properties of materials used and the benefits of the various insulation technologies are discussed. Examples of bushing design are given for power transformer and switchgear applications and particular requirements for HVDC. Reference is also made to bushings for distribution classes. National and International specifications and their requirements for high voltage tests are also discussed. Methods for condition monitoring and assessment of bushings in service are introduced.

Biography>

Summary of Presentation:

Insulation Co-ordination for AC Transmission and Distribution Systems
The presentation starts with an overview of high voltage test procedures and voltage-time characteristics for insulation systems. The generation of system overvoltages by the operation of high voltage networks is also discussed along with overvoltage control methods to reduce the risk of insulation failure. Finally, an overview of lightning strikes to transmission systems is given along with surge propagation and control of lightning induced overvoltages.

Summary of Presentation:

Technology Trends within Transmission and Distribution
The presentation will provide an overview of some the drivers for technology trends, current and historic. Some of the challenges for the T&D industry will then be discussed with specific examples of the technology developments and challenges that exist.

Biography>

Summary of Presentation:

An introduction to the vital components of overhead power lines and some of the fundamental design & testing concepts for engineers to embrace.

Summary of Presentation:

This lecture will cover the reasons for using DC transmission such as long distance power transfer and interconnections between systems without the need for synchronisation. The fundamental design issues and some examples of the specialised equipment used to achieve DC transmission will be described. There will also be some comment on other uses of power electronic devices for supporting power system operation.

Summary of Presentation:

The presentation briefly covers all current aspects of distribution switchgear likely to be found in service, in terms of design, application, operational aspects and type testing. However, the situation is starting to change due to connection of local small generation which is tending to fundamentally alter the application from unidirectional feed to multidirectional feed. At the same time new technologies are being introduced to facilitate this. All these drivers will change the design and way we use distribution switchgear.

Summary of Presentation:

Power electronic controllers are extensively being used at different levels of power networks. Whilst the rapid growth in using power electronic equipment have revolutionised many electrical systems, it has also resulted in some negative effects on the supply system (e.g. voltage distortion). This has resulted in an increased concern about the quality of supply for both utilities and consumers.
The talk provides an overview of current and future trends in using power electronic controllers in power distribution networks

Summary of Presnetation:

Instrument Transformers are used to transform the high levels of current and voltage in high voltage substations to values that can be handled by the measuring, protection and control devices.

The basic principle of the Instrument Transformers will be presented and the design of the different technologies will be explained. Beside the most often used inductive types there will be also presented modern technologies like Low Power Transducers and optical Instrument Transformers.

Summary of Presentation:

There has been a considerable increase in the amount of generation of electrical power from wind over recent years. One of the many drivers behind this increase have been policies to reduce CO2 emissions. However, the location of these wind farms present some challenges to Electrical Engineers. This presentation will explore some of these issues.

Summary of Presentation:

Life Management of Electrical Plant
The presentation will briefly consider techniques of condition assessment and monitoring technology, illustrated with several practical examples to show how this can be applied to reliability-centred and condition-based maintenance techniques.

Biography>

Summary of Presentation:

Design of High Voltage Power Transformers
The lecture provides an overview of Transformer Design and is intended to give background information to those who have little or no knowledge of power transformers and to suggest possible areas for further investigation to those who already have some level of knowledge of transformer technology. It includes such topics as transformer action, cores and core materials, capitalisation of losses, windings and conductors, voltage regulation, dielectric design, making internal connections, electromagnetic design, on-load tapchanging, cooling systems, transportation and site erection.

Summary of Presentation:

This talk will briefly cover the history and theory of superconductivity; discuss applications including power cables, fault current limiters, transformers, generators/motors, energy storage, current leads, instrumentation and magnets; and then discuss in more detail the causes and solutions to fault level problems, focusing in some detail on superconducting fault current limiters.