Development of a Partial Discharge Measuring Method for a Long‐Distance Cable Line

2019 ◽  
Vol 14 (7) ◽  
pp. 996-1001 ◽  
Author(s):  
Nhet Ra ◽  
Nur Sabihah Binti Mustafa ◽  
Tomohiro Kawashima ◽  
Yoshinobu Murakami ◽  
Naohiro Hozumi
Keyword(s):  
Partial Discharge ◽  
Measuring Method ◽  
Cable Line ◽  
Long Distance

Development of a new detection method of partial discharge for EHV long-distance active cable line

1992 ◽  
Vol 112 (7) ◽  
pp. 77-91 ◽  
Author(s):  
Ginzo Katsuta ◽  
Atsushi Toya ◽  
Takeshi Endoh ◽  
Hiroshi Suzuki ◽  
Yasuo Sekii
Keyword(s):  
Detection Method ◽  
Partial Discharge ◽  
Cable Line ◽  
Long Distance

Vision Based Measurement of Refueling Drogue for Autonomous Aerial Refueling

2014 ◽  
Vol 590 ◽  
pp. 618-622
Author(s):  
Xu Feng Wang ◽  
Xin Min Dong ◽  
Xing Wei Kong ◽  
Jian Hui Zhi
Keyword(s):  
Experimental System ◽  
Measuring Method ◽  
Monocular Vision ◽  
Recognition Method ◽  
Long Distance ◽  
Aerial Refueling ◽  
Experimental Scheme ◽  
Aerial Vehicle ◽  
Measuring Experiment ◽  
Detection And Recognition

Autonomous aerial refueling (AAR) can improve the long-distance and rapid strike capacities of an unmanned aerial vehicle (UAV) significantly by extending its range as well as loiter time. This paper has mainly studied on the measurement of refueling drogue during the docking phase of the probe-drogue UAV-AAR. Firstly, the monocular vision based drogue detection and recognition method is presented. Secondly, the measuring method of relative position between the drogue and UAV based on the model of camera calibration is researched. Finally, the semi-physical experimental system of drogue spacial location for UAV-AAR during short-range docking phase is constructed. The drogue measuring experiment based on monocular vision is implemented, and the performance of the monocular vision method for drogue measurement and the validity of the experimental scheme are verified.

Partial discharge measurement in a long distance SF/sub 6/ gas insulated transmission line (GIL)

1998 ◽  
Vol 13 (3) ◽  
pp. 683-690 ◽  
Author(s):  
H. Okubo ◽  
M. Yoshida ◽  
T. Takahashi ◽  
T. Hoshino ◽  
M. Hikita ◽  
...  
Keyword(s):  
Transmission Line ◽  
Partial Discharge ◽  
Long Distance ◽  
Discharge Measurement

scholarly journals Results of Partial Discharge Measurements in the Long-distance 275kV GIL

1999 ◽  
Vol 119 (6) ◽  
pp. 658-665
Author(s):  
Akinobu Miyazaki ◽  
Naoki Takinami ◽  
Shin-ichi Kobayashi ◽  
Hiroshi Takagi ◽  
Yoshinobu Numa ◽  
...  
Keyword(s):  
Partial Discharge ◽  
Long Distance ◽  
Discharge Measurements

scholarly journals Verification of Partial Discharge Measuring Method via Coaxial Bonding Wire for Direct-buried Power Cable

2002 ◽  
Vol 122 (4) ◽  
pp. 520-527
Author(s):  
Min Chen ◽  
Koji Urano ◽  
Yoitsu Sekiguchi ◽  
Hidehiko Kometa ◽  
Atsuhide Jinno ◽  
...  
Keyword(s):  
Partial Discharge ◽  
Measuring Method ◽  
Power Cable ◽  
Bonding Wire

scholarly journals Management ofCommunication System in Pipeline IndustryBased on OLP Technology

CONVERTER ◽  
2021 ◽  
pp. 680-686
Author(s):  
Yu-Bao Ma, Xin-Rong Qin
Keyword(s):  
Optical Fiber ◽  
Communication System ◽  
Self Healing ◽  
Cable Line ◽  
Communication Management ◽  
Long Distance ◽  
Optical Cable ◽  
Technical Requirements ◽  
System Composition ◽  
Optical Line

In order to effectively improve the fault self-healing ability of pipeline communication system and reduce the events of communication interruption caused by fiber break or performance degradation of optical line, this paper introduces the basic principle, system composition working mode and technical requirements of OLP technology. The OLP system is firstly introduced into the relay section of long-distance pipeline to build the standby route with the spare optical fiber as material. When the in-service route is broken or the performance of optical fiber is reduced, the OLP system can automatically switch to the standby route within 50 ms to ensure the communication transmission service be uninterrupted, and even no error code alarm. Through engineering test in pipeline industry, the operability of OLP technology applied to the pipeline communication system is verified. Using the real-time monitoring data of optical cable through OLP system, we can analyze the evolution trend of optical cable line quality, precontrol in advance, and improve the level of communication management.

scholarly journals Development of a New Detection Method of Partial Discharge for EHV Long-Distance Cable Active Line

1991 ◽  
Vol 111 (11) ◽  
pp. 1223-1232 ◽  
Author(s):  
Ginzo Katsuta ◽  
Atsushi Toya ◽  
Takeshi Endoh ◽  
Hiroshi Suzuki ◽  
Yasuo Sekii
Keyword(s):  
Detection Method ◽  
Partial Discharge ◽  
Long Distance ◽  
Active Line

scholarly journals Optimal Placement of UHF Sensors for Accurate Localization of Partial Discharge Source in GIS

Energies ◽  
2019 ◽  
Vol 12 (6) ◽  
pp. 1173 ◽  
Author(s):  
Rui Liang ◽  
Shenglei Wu ◽  
Peng Chi ◽  
Nan Peng ◽  
Yi Li
Keyword(s):  
High Frequency ◽  
Topological Structure ◽  
Euclidean Distance ◽  
Partial Discharge ◽  
Measuring Method ◽  
Optimal Placement ◽  
False Information ◽  
Location Method ◽  
Accurate Localization ◽  
Discharge Source

This paper proposes an optimal placement model of ultra-high frequency (UHF) sensors for accurate location of partial discharge (PD) in gas-insulated switchgear (GIS). The model is based on 0-1 program in consideration of the attenuation influence on the propagation of electromagnetic (EM) waves generated by PD in GIS. the optimal placement plan improves the economy, observability, and accuracy of PD locating. After synchronously acquiring the time of the initial EM waves reaching each UHF sensor, PD occurring time can be obtained. Then, initial locating results can be acquired by using the Euclidean distance measuring method and the extended time difference of arriving (TDOA) location method. With the information of all UHF sensors and the inherent topological structure of GIS, the locating accuracy can be further improved. The method is verified by experiment, showing that the method can avoid the influence of false information and obtain higher locating accuracy by revising initial locating results.

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