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Partial discharge propagation inside a high voltage transformer winding: comparison of measurement and simulation

Partial discharge propagation inside a high voltage transformer winding: comparison of measurement and simulation
Partial discharge propagation inside a high voltage transformer winding: comparison of measurement and simulation
Partial discharge (PD) analysis, based on measurement data, assumes that PD signals propagate inside a transformer winding from the PD source to the measurement points. In this paper, signals are injected via an external connection into specific points along the winding of a transformer experimental model. The measurement data obtained using radio frequency current transducers (RFCT) connected to the external bushing tap and the neutral to earth connections are illustrative of the propagation of signals inside a transformer winding. Thus, this paper reports on the development of a simulation model based on a lumped parameter network approach and compares simulation results with experimental measurements of PD signal propagation inside a high voltage transformer winding model. The physical model is an interleaved disc type winding which consists of eight sections and is modeled as having internal winding series resistances (R), inductances (L), series capacitances (K) and shunt capacitances (Cg), the model also includes the effect of their mutual inductances. The parameters are calculated using analytical calculations based on geometrical dimensions and the winding is modeled using a commercially available mathematics package. The simulation creates PD signals at both ends of the winding i.e. at terminal 1 and terminal 8, which are grounded through a small capacitive and resistive element to represent the bushing end and neutral to earth connection respectively. An experiment has been developed that can be used to validate the simulation data and hence determine the accuracy of the derived model and ultimately its use as a PD localisation approach
978-1-4673-1252-3
56-59
Abd Rahman, M.S.
8217f865-63cf-4fa4-9f2b-19589bbdb2f0
Rapisarda, P.
79efc3b0-a7c6-4ca7-a7f8-de5770a4281b
Lewin, P.L.
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Abd Rahman, M.S.
8217f865-63cf-4fa4-9f2b-19589bbdb2f0
Rapisarda, P.
79efc3b0-a7c6-4ca7-a7f8-de5770a4281b
Lewin, P.L.
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e

Abd Rahman, M.S., Rapisarda, P. and Lewin, P.L. (2012) Partial discharge propagation inside a high voltage transformer winding: comparison of measurement and simulation. 2012 IEEE Conference on Electrical Insulation and Dielectric Phenomena, Canada. 14 - 17 Oct 2012. pp. 56-59 .

Record type: Conference or Workshop Item (Paper)

Abstract

Partial discharge (PD) analysis, based on measurement data, assumes that PD signals propagate inside a transformer winding from the PD source to the measurement points. In this paper, signals are injected via an external connection into specific points along the winding of a transformer experimental model. The measurement data obtained using radio frequency current transducers (RFCT) connected to the external bushing tap and the neutral to earth connections are illustrative of the propagation of signals inside a transformer winding. Thus, this paper reports on the development of a simulation model based on a lumped parameter network approach and compares simulation results with experimental measurements of PD signal propagation inside a high voltage transformer winding model. The physical model is an interleaved disc type winding which consists of eight sections and is modeled as having internal winding series resistances (R), inductances (L), series capacitances (K) and shunt capacitances (Cg), the model also includes the effect of their mutual inductances. The parameters are calculated using analytical calculations based on geometrical dimensions and the winding is modeled using a commercially available mathematics package. The simulation creates PD signals at both ends of the winding i.e. at terminal 1 and terminal 8, which are grounded through a small capacitive and resistive element to represent the bushing end and neutral to earth connection respectively. An experiment has been developed that can be used to validate the simulation data and hence determine the accuracy of the derived model and ultimately its use as a PD localisation approach

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Published date: 14 October 2012
Venue - Dates: 2012 IEEE Conference on Electrical Insulation and Dielectric Phenomena, Canada, 2012-10-14 - 2012-10-17
Organisations: EEE

Identifiers

Local EPrints ID: 344279
URI: https://eprints.soton.ac.uk/id/eprint/344279
ISBN: 978-1-4673-1252-3
PURE UUID: fd2686ed-743e-4fd6-91e4-e874fa5ca6fb

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Date deposited: 17 Oct 2012 13:45
Last modified: 19 Jul 2019 21:51

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