Reply: Online leakage current monitoring of 400 kV insulator strings in polluted areas

1998 ◽  
Vol 145 (4) ◽  
pp. 480
Author(s):  
J.L. Fierro-Chavez
Keyword(s):  
Leakage Current ◽  
Current Monitoring

scholarly journals Insulator string leakage current-monitoring sensor based on fiber Bragg grating

2018 ◽  
Vol 26 (19) ◽  
pp. 24940 ◽  
Author(s):  
Zhehao Yan ◽  
Zhiguo Zhang ◽  
Luming Li ◽  
Tong Zhai ◽  
Renzhong Guo ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
Leakage Current ◽  
Bragg Grating ◽  
Current Monitoring

Leakage Current Monitoring for Electrical Loads Based on Internet of Things

2021 ◽  
Author(s):  
Riky Tri Yunardi ◽  
Erwin Sutanto ◽  
Aji Akbar Firdaus ◽  
Elsyea Adia Tunggadewi ◽  
Hammam Abror Ali ◽  
...  
Keyword(s):  
Internet Of Things ◽  
Leakage Current ◽  
Electrical Loads ◽  
Current Monitoring

Leakage current monitoring and outdoor degradation of silicone rubber

2001 ◽  
Vol 8 (6) ◽  
pp. 1108-1115 ◽  
Author(s):  
Jeong-Ho Kim ◽  
Woo-Chang Song ◽  
Jae-Hyung Lee ◽  
Yong-Kwan Park ◽  
Han-Goo Cho ◽  
...  
Keyword(s):  
Leakage Current ◽  
Silicone Rubber ◽  
Current Monitoring

Long term accelerated aging investigation of an epoxy/silica nanocomposite for high voltage insulation

2018 ◽  
Vol 38 (3) ◽  
pp. 263-269 ◽  
Author(s):  
Abraiz Khattak ◽  
Muhammad Amin ◽  
Muhammad Iqbal
Keyword(s):  
Leakage Current ◽  
Accelerated Aging ◽  
Sem Analysis ◽  
Epoxy Nanocomposite ◽  
Aging Period ◽  
High Voltage Insulation ◽  
Micro Level ◽  
Silica Nanocomposite ◽  
Current Monitoring

AbstractAn epoxy/silica nanocomposite loading was subjected to a multistress environment along with neat epoxy (NEP) in a specially fabricated chamber at 2.5 kV for 9000 h. For aging investigation of the samples, Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), leakage current monitoring and Swedish Transmission Research Institute hydrophobicity classification were used with constant visual inspection. Both samples were found to be adequate and suitable for insulation at the end of the aging period. However, the epoxy nanocomposite (EPNC) performed better in comparison to NEP. FTIR spectrographs showed that a reduction in important hydrocarbon groups was less in the EPNC. The leakage current was higher in the case of the neat sample and accompanied by a higher loss of hydrophobicity. Similarly, in the nanocomposite, no significant change in surface topography at micro level was recorded from the SEM analysis.

scholarly journals Leak Current Monitoring System On The Ground Cables Medium Voltage Transformer 150/20 kV

2018 ◽  
Vol 218 ◽  
pp. 01008
Author(s):  
A. Sofwan ◽  
A. Multi ◽  
R. Soleman ◽  
Sugianto ◽  
A.Kusuma Septian
Keyword(s):  
Leakage Current ◽  
Short Circuit ◽  
Electrical Power ◽  
Voltage Transformer ◽  
Power Outage ◽  
Thermal Failure ◽  
Protection Relay ◽  
Medium Voltage ◽  
Current Monitoring ◽  
T Phase

On January, 2017 there had been fault trip at PMT 150/20 kV transformer in Jatirangon substation. For fault detection, that rele differential phase T and REF 20 kV have worked to detect this fault. The resulted impact of this fault is Power outage in feeder a 1350 A, 35 MW and 5 Mvar. The cause of this fault is the occurrence of breakdown on ground cables 20kV T-phase-core 1. This results in a short circuit to the ground so that the differential protection relay and REF 20kV work because the relay detects a fault in the ptotection zone. The result of this research is the design of an early detection monitoring tool. This tool is used to determine the amount of leakage current on the ground cable in order to minimize the occurrence of interference that causes the occurrence of electrical power outage. The result of the leakage current monitor on the ground phase cable T obtained a current of 0.6A with temperature 35 °C. With thermal failure calculation method for leakage current obtained result of 0,56180A with temperature 35 °C. Comparison of the calculation with the measurement of leakage current on the ground cable T phase is obtained at 6.36%.

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