### Abstract

A practical technique is introduced to determine the possible high frequency oscillations generated by a Partial Discharge (PD) source within a high voltage transformer. the approximation of the discharge signal is difficult to achieve because of the fixed distribution components that are present as well as non-stationary components. To solve this, a Hilbert Huang Transform is introduced to eliminate the presence of any non-stationary offset levels by employing a multi signal decomposition technique. the discharge signal is decomposed into different signal levels, and a least-square estimation technique is used to determine the harmonic decay equation parameters, that consist of signal gain (As), harmonic frequency (UB), damping factor (Ys) and harmonic order (s). the estimated parameters are then used to reconstruct the possible original partial discharge signal oscillation using only the harmonic decay equation. Knowledge of the original discharge signal allows evaluation of the severity of the PD event and may assist in condition based maintenance of the transformer.

Original language | English |
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Title of host publication | Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials |

Pages | 425-428 |

Number of pages | 4 |

DOIs | |

Publication status | Published - 2009 |

Externally published | Yes |

Event | 2009 IEEE 9th International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2009 - Harbin Duration: 19 Jul 2009 → 23 Jul 2009 |

### Other

Other | 2009 IEEE 9th International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2009 |
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City | Harbin |

Period | 19/7/09 → 23/7/09 |

### Fingerprint

### Keywords

- High voltage transformer
- Multi signal decomposition
- Partial discharge

### ASJC Scopus subject areas

- Electronic, Optical and Magnetic Materials
- Materials Chemistry
- Condensed Matter Physics

### Cite this

*Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials*(pp. 425-428). [5252398] https://doi.org/10.1109/ICPADM.2009.5252398

**Partial discharge estimation in a high voltage transformer using multi signal decomposition technique.** / Mohamed, Ramizi; Lewin, P. L.; Chen, G.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

*Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials.*, 5252398, pp. 425-428, 2009 IEEE 9th International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2009, Harbin, 19/7/09. https://doi.org/10.1109/ICPADM.2009.5252398

}

TY - GEN

T1 - Partial discharge estimation in a high voltage transformer using multi signal decomposition technique

AU - Mohamed, Ramizi

AU - Lewin, P. L.

AU - Chen, G.

PY - 2009

Y1 - 2009

N2 - A practical technique is introduced to determine the possible high frequency oscillations generated by a Partial Discharge (PD) source within a high voltage transformer. the approximation of the discharge signal is difficult to achieve because of the fixed distribution components that are present as well as non-stationary components. To solve this, a Hilbert Huang Transform is introduced to eliminate the presence of any non-stationary offset levels by employing a multi signal decomposition technique. the discharge signal is decomposed into different signal levels, and a least-square estimation technique is used to determine the harmonic decay equation parameters, that consist of signal gain (As), harmonic frequency (UB), damping factor (Ys) and harmonic order (s). the estimated parameters are then used to reconstruct the possible original partial discharge signal oscillation using only the harmonic decay equation. Knowledge of the original discharge signal allows evaluation of the severity of the PD event and may assist in condition based maintenance of the transformer.

AB - A practical technique is introduced to determine the possible high frequency oscillations generated by a Partial Discharge (PD) source within a high voltage transformer. the approximation of the discharge signal is difficult to achieve because of the fixed distribution components that are present as well as non-stationary components. To solve this, a Hilbert Huang Transform is introduced to eliminate the presence of any non-stationary offset levels by employing a multi signal decomposition technique. the discharge signal is decomposed into different signal levels, and a least-square estimation technique is used to determine the harmonic decay equation parameters, that consist of signal gain (As), harmonic frequency (UB), damping factor (Ys) and harmonic order (s). the estimated parameters are then used to reconstruct the possible original partial discharge signal oscillation using only the harmonic decay equation. Knowledge of the original discharge signal allows evaluation of the severity of the PD event and may assist in condition based maintenance of the transformer.

KW - High voltage transformer

KW - Multi signal decomposition

KW - Partial discharge

UR - http://www.scopus.com/inward/record.url?scp=71049132288&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=71049132288&partnerID=8YFLogxK

U2 - 10.1109/ICPADM.2009.5252398

DO - 10.1109/ICPADM.2009.5252398

M3 - Conference contribution

AN - SCOPUS:71049132288

SN - 9781424443680

SP - 425

EP - 428

BT - Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials

ER -