Partial discharge location in power transformers using wideband RF detection

Tang, Zhiguo; Li, Chengrong; Cheng, Xu; Wang, Wei; Li, Jinzhong; Li, Jun

doi:10.1109/tdei.2006.258190

Cited by 91 publications

(40 citation statements)

References 10 publications

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“…Then, a post processing phase (location method) takes place in order to extract information from these measurements, that can lead to an estimation of the position of the source. Electrostatic discharge location is a topic that has been largely studied in the past, mostly for partial discharges in high voltage facilities [11][12][13]. Several methods exist in order to locate a wideband source and in the vast majority of cases it involves the use of an array of sensors.…”

Section: Location Methodsmentioning

confidence: 99%

“…It is important to note that the number of sensors used has a big impact on the location precision [18]. Moreover, in order to solve these equations to find the source position it is necessary to use numerical methods as Least Squares (LS) [13], Newton-Raphson, [11] or others [19], to reach an approached solution. An exact solution to sphere equations can be found in [20].…”

Section: Hyperbolic Location Methodsmentioning

confidence: 99%

“…. ) as described in [13]. However, these tools are well adapted to Line-Of-Sight (LOS) situations, where the waveforms coming from the sensors are similar (correlation).…”

Section: Time Delay Estimationmentioning

confidence: 99%

“…First, a 1 : 6.5 downscaled fuselage mock-up is used, it consists in a simple cylinder with 60 cm diameter. Three identical simple UHF sensors are placed on the surface as they are widely used for these applications [13]. These sensors are actually three identical 7 cm-long whip antennas that operate around 1 GHz.…”

Section: Measurement Setupmentioning

confidence: 99%

See 3 more Smart Citations

Method for P-Static Source Location on Aircraft Using Time Domain Measurements

Garcia-Hallo¹,

Lemaire²,

Raveu³

et al. 2016

PIER C

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Abstract-Static charging of an aircraft surface can lead to electromagnetic disturbances on aircraft radio and avionic systems. This phenomenon is called Precipitation Static. Arc discharges are the main causes, and they often occur when there is a bonding defect on the surface of the aircraft. In order to find these bonding defects, often the whole aircraft has to be scanned. This paper presents a method that aims at reducing the time needed for the search of outer bonding issues. The system is composed of an instrumentation to be used in-flight, that measures the electromagnetic emissions of P-Static sources using several sensors placed on the surface of the aircraft. Then, given several signals measured from sensors and using a time domain location method based on delay estimation, it is possible to compute the source position. The method is validated on a simplified fuselage mock-up with satisfying location performance.

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Section: Location Methodsmentioning

confidence: 99%

Section: Hyperbolic Location Methodsmentioning

confidence: 99%

“…. ) as described in [13]. However, these tools are well adapted to Line-Of-Sight (LOS) situations, where the waveforms coming from the sensors are similar (correlation).…”

Section: Time Delay Estimationmentioning

confidence: 99%

Section: Measurement Setupmentioning

confidence: 99%

See 2 more Smart Citations

Method for P-Static Source Location on Aircraft Using Time Domain Measurements

Garcia-Hallo¹,

Lemaire²,

Raveu³

et al. 2016

PIER C

View full text Add to dashboard Cite

show abstract

“…Currently, different UHF antennas, which can be classified as external and built-in, are used for PD detection in transformers, gas-insulation switches (GIS), wind power devices, power cable and etc. [11][12][13][14][15][16][17][18][19][20]. However, the study on the UHF antenna for PD detection application in the high voltage switchgear is not enough, and those previous antennas either have narrow operating bandwidths or have low gain.…”

Section: Introductionmentioning

confidence: 99%

An Uwb Printed Antenna for Partial Discharge Uhf Detection in High Voltage Switchgears

Yang¹,

Peng²,

Yang³

et al. 2016

PIER C

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Abstract-As important fundamental equipment, high voltage switchgears are widely used in electric power systems and directly relative to the power reliability and quality. Partial discharge (PD) online monitoring is one of the most effective methods used for insulation testing and diagnosis in high voltage switchgears and power systems. This paper proposes a unique ultra-wide-band (UWB) antenna with high performance for PD ultra-high-frequency (UHF) detection in high voltage switchgears. Actual PD experiments were carried out, and the designed antenna was used for PD measurements. The measured results demonstrate that the proposed antenna has wide work frequency band, good omnidirectional radiation patterns and appreciable gain, which indicate that the proposed antenna is suitable for UHF online monitoring of PDs in high voltage switchgears.

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