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|Title: ||Partial discharge measurements in high voltage motors.|
|Authors: ||Buchan, John G.|
|Supervisors: ||Edwards, David G.|
|Issue Date: ||Sep-1987|
|Publisher: ||Robert Gordon University|
|Citation: ||BUCHAN, J. G. and EDWARDS, D. G., 1987. A technique for the location of partial discharge in the stator winding of a high-voltage motor. 5th BEAMA International Electrical Insulation Conference. Brighton. May 1987. pp. 225-229|
|Abstract: ||The work presented in this thesis is concerned with the development of
an on-line technique for detecting and locating partial discharges in
the stator winding of a high voltage electrical machine. This
technique forms part of an on-line health monitoring strategy for the
insulation of high voltage machines.
Existing diagnostic techniques
and partial discharge measurement systems are reviewed.
requirement for an on-line partial discharge location technique is
An experimental investigation was carried out into the propagation
characteristics of partial discharge pulses within a model stator
This allowed identification of the main propagation
characteristics which were used as the basis for the development of a
partial discharge location technique.
In the development of a location technique, a means of on-line
detection of discharge signals at the motor terminals is required. A
study was therefore made on the use of the Rogowski coil for the
non-invasive measurement of partial discharges.
A partial discharge location system was developed based on the
correlation of partial discharge pulses detected at the two ends of a
motor phase winding.
The performance of the location system was
investigated by injecting artificially generated discharge pulses into
the model stator winding. Further verification of the ability of the
technique to locate the position of discharges was done by injecting
high voltage discharges.
The final part of the research work was to develop a theoretical model
to predict the propagation behaviour of partial discharge pulses in
the stator winding of an electrical machine .
The effect of
electromagnetic propagation through the endwinding region is
incorporated in the model of two adjacent coils in a winding.|
|Appears in Collections:||Theses (Engineering)|
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