Application of the CIGRE-sensitivity verification for UHF PD detection in three-phase GIS

Knapp, Martin; Feger, Reinhard; Feser, K.; Breuer, Antonia

doi:10.1049/cp:19990891

Cited by 6 publications

(2 citation statements)

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“…Partial discharge (PD) detection is the most effective method to monitor and diagnose the insulation condition of high voltage apparatus [1][2][3][4][5][6][7][8]. PD detection method is of importance among the various diagnostic techniques, since it is non-destructive, non-intrusive and can qualitatively describe the integrity of insulation system.One of the promising PD diagnostic techniques is the ultrahigh frequency (UHF) electromagnetic wave detection method that has been widely used for measuring insulation performance in gas-insulated switchgear (GIS) due to its advantageous characteristics, such as high sensitivity, wide detection range and less external disturbances [9][10][11][12][13][14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Characteristics of External Loop Sensor Located Near Bushing on Partial Discharge Induced Electromagnetic Wave Measurement

Sriyono¹,

Kim

Khayam

et al. 2013

ijeei

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For transmitting a huge electrical energy, high voltage transmission systems are commonly operated. Due to high reliability and less space required, gas insulated substation (GIS) are widely used. In a defect experienced GIS, partial discharge (PD) usually takes place. Partial discharge (PD) monitoring technique using UHF method becomes more popular because of its higher signal to noise (S/N) ratio. Amongst novel sensors, loop sensor could be a candidate for PD detector to measure UHF signal emitted from PD source. This paper presents the experiment results on characteristics of loop sensors. The characteristics of three loop sensors with varying diameter were examined using a spectrum analyzer and a network analyzer to obtain frequency characteristic and optimum operating frequency (S11) parameter, respectively. Then, PD experiment was conducted on 66kV GIS model having floating electrode and free metallic particles as its PD source. The loop sensors were placed far external to GIS bushing to measure leaked PD signal from it. The influences of the sensor diameter and the sensor distance from GIS bushing on PD detection sensitivity were also examined. Based on IEC-60270 standard measurement, the highest sensitivity of 30 pC was obtained from this investigation. The result suggests that higher sensitivity could be achieved with proper shielding and suitable filter design against external noise.

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Section: Introductionmentioning

confidence: 99%

Characteristics of External Loop Sensor Located Near Bushing on Partial Discharge Induced Electromagnetic Wave Measurement

Sriyono¹,

Kim

Khayam

et al. 2013

ijeei

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“…The studies of UHF partial discharge detection technique mainly concentrate on the following aspects: sensor design、optimization and calibration [3][4][5][6][7] , UHF radiation and propagation mechanism, PD source characterization [14] and fault location [15] . In addition, some researchers use UHF method as an anti-interference tool for the conventional technique.…”

Section: Introductionmentioning

confidence: 99%

Field practices of UHF technique for on-line PD monitoring and site testing of power transformers

Tang

Huang³

et al.

IEEE PES Power Systems Conference and Exposition, 2004.

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A field-oriented UHF system for on-line PD monitoring of transformers is designed, which has been installed inside the oil tank of a 220kV transformer in a substation of Henan Province by two ways: on-line installing mode through the oil-valve and pre-installing mode through the man hole/hand hole cover. This system has successfully captured long intermittent discharge signals that hadn't been detected through conventional techniques, and solved the problem successfully. The results demonstrate that UHF technique has great advantages for on-line PD monitoring of transformers. By adopting the peak detection technique, it becomes easy and effective for the transplantation of the phase-resolved pattern recognition technique from conventional method to UHF method, and then to realize continuous on-line monitoring, source characterization and trending analysis.

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Evaluation on validity of the UHF sensor and their arrangement on GIS

Peng

Wang

Tang

et al. 2016

2016 International Conference on Condition Monitoring and Diagnosis (CMD)

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Application of the CIGRE-sensitivity verification for UHF PD detection in three-phase GIS

Cited by 6 publications

References 0 publications

Characteristics of External Loop Sensor Located Near Bushing on Partial Discharge Induced Electromagnetic Wave Measurement

Characteristics of External Loop Sensor Located Near Bushing on Partial Discharge Induced Electromagnetic Wave Measurement

Field practices of UHF technique for on-line PD monitoring and site testing of power transformers

Evaluation on validity of the UHF sensor and their arrangement on GIS

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