Modern Partial Discharge Detection and Analysis for Insulation Assessment
When
Sydney 24 & 25 July 2008
Where
Venue: Electrical Engineering Building (Bldg G17)University of New South Wales, Kensington, NSW
Cost
$1,100 (incl. GST) API Members
$1,650 (incl. GST) Non-Member
Description
This two-day short course is designed to educate practicing engineers about diagnostic procedures for determining insulation conditions in HV plant and how this is of major importance to asset management.
Economic constraints imposed on plant operation necessitate high reliability of equipment and this requires better assessment of insulation conditions.
Modern developments in signal processing and data storage and analysis have allowed partial discharge (PD) testing to emerge from being a limited off-line test to being arguably the most important and versatile on-line insulation diagnostic technique available to the test engineer.
It is now possible to use PD testing of HV plant continuously on-line and to record information on every discharge event that occurs in the insulation. From the data obtained it is possible to identify fault type(s) from the PD characteristics and to monitor trends in the insulation behaviour and potential degradation over time.
Modern PD diagnostics have a wide variety of sensor types available together with large data storage capacity. These allow much greater flexibility and accuracy in interpretation of the PD activity. It is possible to display PD activity in both time and frequency domains and the flexibility of display makes the interpretation of the data in terms of insulation condition easier and more amenable to intelligent system analysis.
In addition to characterising PD activity using the traditional magnitude/repetition rate/phase angle patterns and the IEC60270 integrated parameters, the actual current waveform of the individual PD pulses can provide a sensitive correlation to insulation condition, particularly in the frequency domain.
Modern partial discharge detectors allow all of these features to be displayed in a variety of pattern representations, enabling a much more sensitive interpretation of insulation condition. With the ability to record the data for post-processing, the previous need for operators to have years of experience in PD testing has been overcome.
PD characteristics can now be recorded and their trends and the implications for insulation condition interpreted much more definitively. With the wide diversity of potential sensing methods available for any type of equipment PD testing now provides arguably the most versatile condition assessment technique available for electrical insulation. It is now a major assessment technique for asset management.
Course Outlines | |
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The course is designed for testing and maintenance engineers, technical staff and anybody involved with the operation, testing or purchase of high voltage electrical plant. Covering
The presentations will provide some coverage of basic discharge properties and how they interact with and cause degradation of insulation materials, with an outline of how the various pattern displays can give assessment of degradation of insulation. New techniques of PD monitoring and of the data analysis methods that can be used to extract most useful information will also be covered. Attention will be given to the application and viability of the modern handheld versions of PD detectors. Practical aspects of on-site testing and handling of interference, including both hardware and software based rejection methods. Modern high frequency PD monitoring will also be covered, in addition to recent developments in the lower frequency traditional PD methods covered by IEC 60270. These will be discussed with regard to a variety of equipment insulation types including trans formers, cables, switchgear and GIS systems. Laboratory Demonstration Sessions Include
The presentations on sensing and analysis methods will be supported by practical laboratory demonstrations. This will include a demonstration of a continuous on-line cable monitoring PD system developed at UNSW under the auspices of the ASTP program. Discussion Sessions Include:
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Speakers
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Trevor Blackburn, UNSW Toan Phung, UNSW Zhenyu Liu, UNSW Graham Burgess, Integral Energy Hao Zhang, Energy Australia |
Chris Odendaal, Wilson Transformers Jose Lopez-Roldan, Powerlink Qld. Brad Fuller, Mtronix/Omicron Karl Haubner, Doble Instruments Warren Artlett, Energy Australia Rob Heygi, Integral Energy |
Registration, Accommodation, and Further Information
Registration: goto the EEA website Click here: Engineering
Education Australia (EEA)
Accommodation if required is the
responsibility of participants.
Technical enquiries
If you have any enquires regarding the course content please Phone 02 9385 4049 or email UNSW, Trevor Blackburn