High performance broadband capacitive coupler for partial discharge cable tests

Rodrigo, A.; Llovera, P.; Fuster, Vicente Domingo Estruch; Quijano, Alfredo

doi:10.1109/tdei.2013.6508750

Cited by 17 publications

(4 citation statements)

References 19 publications

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“…Immune to electromagnetic noise High attenuation [111] HFCT Non-intruding installation, wide bandwidth [112] Material saturation caused by large current at power frequency Current loop is needed Rogowski coil Light weight, low cost compared with HFCT [113] Narrow frequency band [114] Current loop is needed Coupling capacitor High sensitivity, possible to be integrated in cable [115] The size and cost of a coupling capacitor can become problematic for onsite measurement [116] Installing can be an issue, safety risk due to galvanic contact needs to be considered UHF Good anti-disturbance performance [111] Strong attenuation, cannot be calibrated [117] Cable shielding effect Ultraviolet imager Easy to use Can only detect corona discharge at cable termination…”

Section: Sensor Type Advantages Disadvantages Ae Sensormentioning

confidence: 99%

Review on Detection and Analysis of Partial Discharge along Power Cables

Zhang

Pang

Liu³

et al. 2021

Energies

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Partial discharge (PD) detection and analysis plays a crucial role for acceptance testing and condition monitoring of power cables. Various aspects are related to PD in power cables from theory to practice. This paper first summarizes the PD mechanism and models used for PD analysis in power cables. Afterwards, PD detection is addressed in the aspects of off-line test, on-line test, and sensors. PD analysis is discussed in detail. Specifically, related quantities and algorithms for PD analysis are outlined. PD characteristics with affecting factors, e.g., dielectric type, load, and applied voltage are discussed. Experience on PD development trend with measurements in field is analyzed. Based on the comprehensive review, challenges of PD detection and analysis along a power cable are proposed.

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Section: Sensor Type Advantages Disadvantages Ae Sensormentioning

confidence: 99%

Review on Detection and Analysis of Partial Discharge along Power Cables

Zhang

Pang

Liu³

et al. 2021

Energies

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“…The on‐line measurements of these signal are useful to determine the PDs activity on the cables and to assess the cable deterioration and ageing. For this reason, sophisticated PD measurements techniques are under development to detect and locate PD sources on power networks [27–29 ]. PD signals are high frequency signals and their propagation in power cables is subject to the phenomena of the attenuation, that reduces the signal amplitude during propagation, and dispersion which dispersion changes the shape signal along the cable.…”

Section: 3d–1d Hybrid Model For the Propagation Of Pd Signal On Powmentioning

confidence: 99%

3D Model of partial discharge in defects with different sizes and positions in power cable for distribution and transmission networks

Ragusa

Sasse

Duffy

2020

IET Science, Measurement &Amp; Technology

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The knowledge of partial discharge (PD) phenomena inside electrical insulation of power cables is an important issue for assessing the insulation condition and its degradation state, obtaining information about the likelihood of failure. PDs cause signals to propagate along the cable, as noise phenomena, and contribute to the insulation degradation, culminating in a disruptive fault with the interruption of power supply. Therefore, PDs are considered the best ‘early warning’ indicators of insulation degradation and their modelling, with the development of on‐line PDs location methods, are important topics to increase the networks’ electricity security. In this study, a three‐dimensional (3D) model of PD events using the CST STUDIO® Dassault software is proposed. PDs inside air inclusions in epoxy‐resin are analysed with different shapes, positions and sizes of the defect. The electric‐field distribution is evaluated with the conduction current inside the void and the apparent charges induced on the electrode. The effectiveness of the model is validated by comparing the simulation results with other published experimental results. Finally, a description of a 3D–1D hybrid model useful to describe the propagation of PD signals in power networks is given.

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“…Majority of electrical equipment produce a broad range of sound and the most basic electrical problems produce distinct ultrasound waves which can be detected through ultrasonic testing. Furthermore, there are many kinds of sensors and methods that have been developed to assess the ultrasonic testing [12][13][14][15][16]. Ultrasonic measurement is one of the most powerful on a comparative basis and will significantly increase the reliability of correct detection of PD when used with other online PD testing technologies.…”

Section: Introductionmentioning

confidence: 99%

Partial discharge detection device using ultrasonic sensor on medium voltage XLPE cable

Radzi

Nik

Rameli

et al. 2020

IJEECS

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There are many methods that have been studied by earlier researchers in order to detect the acoustic properties of Partial Discharge (PD) emitted by PD sources. One of the methods known as ultrasonic sensing on medium voltage Cross-Linked Polyethylene (XLPE) cable was adopted to detect partial discharges on commercial applications, usually by using Acoustic Emission (AE) sensors. This paper presents the processes of designing a PD sensor to detect the acoustic properties of the partial discharges on medium voltage XLPE cable. This PD sensor method works by detecting the partial discharges occurred at the joint of the cable which can act as an early warning device to help minimize the repair and maintenance costs of degrading cable. Result of the experiment shows the complete design of the prototype device, the device after fabrication and the functionality of the device. This design of the prototype can be beneficial for future uses in designing cost efficient and smaller sized PD detection devices. By positioning the sensor in horizontal position directly to the source of PD on the cable, the sensor will be able to detect acoustic properties of PD, by picking up the frequencies beyond 40 kHz. By varying the voltage applied values, a design of experiment (DOE) is carried out accordingly. Result of the experiment shows that the prototype device is functioning as expected, and hence this finding will be very useful to the consumers of power industries as the sensor device can serve as an alternative device to the commercialized PD sensing devices which are bulky and expensive.

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High performance broadband capacitive coupler for partial discharge cable tests

Cited by 17 publications

References 19 publications

Review on Detection and Analysis of Partial Discharge along Power Cables

Review on Detection and Analysis of Partial Discharge along Power Cables

3D Model of partial discharge in defects with different sizes and positions in power cable for distribution and transmission networks

Partial discharge detection device using ultrasonic sensor on medium voltage XLPE cable

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