Results 211 to 220 of about 7,327 (250)

Determination of Type of Partial Discharge in Cubicle-Type Gas Insulated Switchgear (C-GIS) using Artificial Neural Network

2018 Condition Monitoring and Diagnosis (CMD), 2018
Partial discharge (PD) measurement is performed as one of diagnostic tool for condition monitoring in cubicle-type gas insulated switchgear (C-GIS). This paper presents artificial neural network (ANN) to identify the type of PD occurring in C-GIS. PD measurement results obtained from C-GIS in a field were fed to the ANN as input parameters to determine
Taufik Rossal Sukma, Umar Khayam, null Suwarno, Ryouya Sugawara, Hina Yoshikawa, Masahiro Kozako, Masayuki Hikita, Osamu Eda, Masanori Otsuka, Hiroshi Kaneko, Yasuharu Shiina   +10 more
openaire   +1 more source

Domain-alignment multitask learning network for partial discharge condition assessment with digital twin in gas-insulated switchgear

Measurement science and technology
Deep-learning-driven methods have made great progress in the condition assessment of partial discharge (PD) which including diagnosis and location in gas-insulated switchgear (GIS).
Jing Yan, Yanxin Wang, Wenjie Zhang, Jianhua Wang, Yingsan Geng, Dipti Srinivasan   +5 more
semanticscholar   +1 more source

UHF Partial Discharge fixed and portable monitoring systems for prevent of the failure in Gas-Insulated Switchgear(GIS)

Conference Record of the 2008 IEEE International Symposium on Electrical Insulation, 2008
We developed an Ultra high frequency (UHF) partial discharge fixed and portable monitoring systems to prevent a catastrophic failure of gas-insulated switchgears. The system has been tested in the laboratory and on-site for detection of various tested in the laboratory for detection of various UHF PD signals.
null Chul-min Hwang, null Jae-ok Choi, null Chul-kwang Choi, null In-song Jung   +3 more
openaire   +1 more source

Multi-source domain adaptation network for partial discharge severity assessment in gas-insulated switchgear

Measurement science and technology
Gas-insulated switchgear (GIS) partial discharge (PD) severity assessment is critical for ensuring the reliable operation of GIS systems. However, existing assessment methods often overlook the long-term dependencies of historical data and fail to ...
Yanxin Wang, Jing Yan, Wenjie Zhang, Yingsan Geng, Jianhua Wang, Dipti Srinivasan   +5 more
semanticscholar   +1 more source

In-Situ Measurements of SF6 Leak Rates in Indoor Gas-Insulated Switchgears (GIS)

2001
All SF6-insulated equipment leaks to some degree. These losses of SF6 gas are usually low and usually less than 2% of the whole gas content of typical GIS. They occur slowly and almost undetected for many years, until a low gas pressure alarm sounds. Over the last fifteen years, manufacturers have continuously improve the gas tightness of their metal ...
openaire   +1 more source

Selection of the Time Parameters of Oscillating Impulse Voltages for On‐Site Testing of Gas Insulated Switchgears (GIS)

Beiträge aus der Plasmaphysik, 1985
AbstractGIS for operation voltages ≧ 245 kV can be tested with oscillating impulse voltages on site advantageously, because this H. V. test can be performed with easily mountable impulse generators. The IEC recommendation for on‐site testing of GIS which is now under discussion doesn't fix the time parameters of the oscillating impulse voltages, but ...
W. Hauschild, W. Schader, W. Mosch, K. Petzold   +3 more
openaire   +1 more source

Enhanced Detection of SF₆ Gas Moisture Concentration in Gas-Insulated Switchgear Utilizing Tilted Fiber Bragg Grating Coated With Multilayer Graphene Oxide Films

IEEE Transactions on Instrumentation and Measurement
The increase in moisture concentration within gas-insulated switchgear (GIS) reduces the insulation level of the equipment, necessitating the detection of SF6 moisture concentration.
Yu-kun Wang, Guoming Ma, Xunbo Gao, Junting Ji, Biqian Xu, Houxian Du, Ruize Tong, Daiyuan Yang   +7 more
semanticscholar   +1 more source

A possible application of the non-uniform electric field measurement using Pockels effect in GIS (gas insulated switchgear)

The 30th International Conference on Plasma Science, 2003. ICOPS 2003. IEEE Conference Record - Abstracts., 2003
Summary form only given, as follows. In this paper, a novel optical measuring system for the measuring of non-uniform electric field was proposed. The first feasibility investigation on the probe sensor, based on the Pockels cell, has been performed to measure the variation of the electric field due to the corona discharges.
null Ja-yoon Koo, null Cheol-hwi Ryu, null Yong-moo Chang   +2 more
openaire   +1 more source

An automatic robot for ultrasonic partial discharge detection of gas-insulated switchgear

Industrial robot
Purpose Gas-insulated switchgear (GIS) stands as a pivotal component in power systems, susceptible to partial discharge occurrences. Nevertheless, manual inspection proves labor-intensive, exhibits a low defect detection rate.
Run Yang, Jingru Li, Taiyun Zhu, Di Hu, Erbao Dong   +4 more
semanticscholar   +1 more source

Quality Analysis and Lifetime Prediction of SF₆ in High Voltage Gas Insulated Switchgear (GIS) at CSW Bulungan

2019 IEEE International Conference on Innovative Research and Development (ICIRD), 2019
This paper represents the relation between moisture content and dew point of SF 6 gas using the Magnus method. The method shows that the main circuit breaker in the high voltage gas insulated switchgear (HVGIS) is the most fragile compartment. The relationship of dew point to moisture content of SF 6 in HVGIS is linear with the rate of change ...
Ratri P. Dewimaruto, Amien Rahardjo, Rudy Setiabudy, Fauzan H. Jufri, Faiz Husnayain   +4 more
openaire   +1 more source