Harmonics Analysis of Leakage Current Waveforms and Surface Discharge for EPDM Polymer Insulator

2004 ◽  
Vol 17 (9) ◽  
pp. 1013-1021 ◽  
Keyword(s):  
Leakage Current ◽  
Surface Discharge ◽  
Polymer Insulator

Partial Discharge Characterization based on Leakage Current Pulses Waveform for Contaminated Glass Insulator String

2016 ◽  
Vol 6 (2) ◽  
pp. 835
Author(s):  
N. A. Othman ◽  
M. A. M. Piah ◽  
Z. Adzis ◽  
Nasir A. Al-geelani
Keyword(s):  
Corona Discharge ◽  
Monitoring System ◽  
Leakage Current ◽  
Partial Discharge ◽  
Surface Discharge ◽  
Performance Tests ◽  
Current Pulses ◽  
Glass Insulator

This paper deals with the analysis of partial discharge (PD) occurrences based on leakage current (LC) pulses distribution under different level of contamination. In this work, laboratory based contamination performance tests are conducted on four units of glass insulator string stacked in I-position. Results show that PD can be characterized (according to their occurrence with respect to the AC supply) as follows: corona discharge occurring dominantly in lightly contaminated insulators, surface discharge occurring dominantly in medium contaminated insulators and finally internal discharge occurring dominantly in heavily contaminated insulators. The ability to distinguish the type of PDs from the LC waveform could be used to monitor and predict the condition of the insulator. The outcome can be incorporated in a conditioning monitoring system.

scholarly journals Simulation and Experimental Investigation on Carbonized Tracking Failure of EPDM/BN-Based Electrical Insulation

Polymers ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 582 ◽  
Author(s):  
Muhammad Tariq Nazir ◽  
Faizan Tahir Butt ◽  
Bao Toan Phung ◽  
Guan Heng Yeoh ◽  
Ghulam Yasin ◽  
...  
Keyword(s):  
Leakage Current ◽  
Failure Time ◽  
Harmonic Component ◽  
Experimental Results ◽  
Shielding Effect ◽  
Surface Discharge ◽  
Melt Mixing ◽  
Electrical Field ◽  
Third Harmonic ◽  
Thermal Depolymerization

Ethylene propylene diene monomer (EPDM) is broadly employed as an insulating material for high voltage applications. Surface discharge-induced thermal depolymerization and carbon tracking adversely affect its performance. This work reports the electrical field modeling, carbon tracking lifetime, infrared thermal distribution, and leakage current development on EPDM-based insulation with the addition of nano-BN (boron nitride) contents. Melt mixing and compression molding techniques were used for the fabrication of nanocomposites. An electrical tracking resistance test was carried out as per IEC-60587. Simulation results show that contamination significantly distorted the electrical field distribution and induced dry band arcing. Experimental results indicate that electric field stress was noticed significantly higher at the intersection of insulation and edges of the area of contamination. Moreover, the field substantially intensified with the increasing voltage levels. Experimental results show improved carbonized tracking lifetime with the addition of nano-BN contents. Furthermore, surface temperature was reduced in the critical contamination flow path. The third harmonic component in the leakage current declined with the increase of the nano-BN contents. It is concluded that addition of nano-BN imparts a better tracking failure time, and this is attributed to better thermal conductivity and thermal stability, as well as an improved shielding effect to electrical discharges on the surface of nanocomposite insulators.

scholarly journals Partial Discharge Characterization based on Leakage Current Pulses Waveform for Contaminated Glass Insulator String

2016 ◽  
Vol 6 (2) ◽  
pp. 835
Author(s):  
N. A. Othman ◽  
M. A. M. Piah ◽  
Z. Adzis ◽  
Nasir A. Al-geelani
Keyword(s):  
Corona Discharge ◽  
Monitoring System ◽  
Leakage Current ◽  
Partial Discharge ◽  
Surface Discharge ◽  
Performance Tests ◽  
Current Pulses ◽  
Glass Insulator

This paper deals with the analysis of partial discharge (PD) occurrences based on leakage current (LC) pulses distribution under different level of contamination. In this work, laboratory based contamination performance tests are conducted on four units of glass insulator string stacked in I-position. Results show that PD can be characterized (according to their occurrence with respect to the AC supply) as follows: corona discharge occurring dominantly in lightly contaminated insulators, surface discharge occurring dominantly in medium contaminated insulators and finally internal discharge occurring dominantly in heavily contaminated insulators. The ability to distinguish the type of PDs from the LC waveform could be used to monitor and predict the condition of the insulator. The outcome can be incorporated in a conditioning monitoring system.

scholarly journals Estimated leakage current based on the thermal image of the polymer insulator using the color detection method

2019 ◽  
Vol 1317 ◽  
pp. 012025
Author(s):  
Darwison ◽  
S Arief ◽  
H Abral ◽  
A Hazmi ◽  
Aulia ◽  
...  
Keyword(s):  
Leakage Current ◽  
Detection Method ◽  
Thermal Image ◽  
Polymer Insulator ◽  
Color Detection
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