Modelling and simulation of online partial discharge measurement for medium voltage power cable

Abdullah, Andi Zulkifli; Isa, Mohd Nazrin Md; Rohani, Mohamad Nur Khairul Hafizi; Hamid, Haris Hafizal Abd; Amlus, Mohammad Harith; Azizan, N.

doi:10.11591/eei.v9i2.2076

Cited by 2 publications

(1 citation statement)

References 20 publications

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“…In other studies researchers discovered that the PD detection with online techniques needs the sensors' sensitivity with wide bandwidth, since PD signals can be distorted if the bandwidth is narrow (Fukunaga et al, 1992;Mulroy et al, 2012;Wei et al, 2000). Moreover, other parameters like voltages, currents and temperature can be monitored on-line to determine a defected portion of the cable (Abdullah et al, 2020(Abdullah et al, , 2021Ghaedi et al, 2016). This paper presents a comparative analysis on location, quantification and detection of three potential on-line techniques to detect PD activity within the cable joint.…”

Section: Introductionmentioning

confidence: 99%

Comparison of On-Line Partial Discharge Detection Techniques for High Voltage Power Cable Joints and Terminations

Chambela

Mushi

2023

TJET

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Cable joints and terminations play a vital role in providing dependable electrical connection, mechanical support and physical safeguard. These provide electrical stress control to shielded power cables. Despite their usefulness, they suffer from partial discharges (PD) because of enhanced voltage stress, moisture ingress and poor workmanship (during installation). Therefore, it is necessary to undertake on-line PD detection to determine their state. Some of these techniques are capacitive coupler (CC); acoustic emission (AE); and high frequency current transducer (HFCT). This article presents a literature review of these techniques based on the cost, availability, and applicability. The comparative analysis is also provided on location of their sensors, quantification and detection ability. The CC technique involves the quantification of the coupler sensor input measured in mV/pC by realizing the time of flight between two sensors for which the results are used to estimate location of the PD. Meanwhile, the AE technique has an advantage of high immunity to electrical noise, with a caveat that acoustic signals are highly attenuated within the cable joints. Additionally, the combination of the acoustic sensors and PD electrical couplers can be used to discriminate PDs from electrical noise. The HFCT has two methods – with demonising (HFCT-WiD) and without demonising (HFCT-WoD). The HFCT-WiD technique can significantly reduce the sensor’s detection sensitivity due to its high value of noise to signal ratio (NSR). Comparatively, the HFCT has the best results of quantification and detection ability for PDs among all three techniques investigated. However, in places where electrical noise is severe, PD activities may be detected effectively with AE technique. Further work is needed to statistically map these methods and establish their correlation with experimental data.

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Section: Introductionmentioning

confidence: 99%

Comparison of On-Line Partial Discharge Detection Techniques for High Voltage Power Cable Joints and Terminations

Chambela

Mushi

2023

TJET

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Partial Discharge Characteristics for On-Site Measurement based on Rise Time Waveform

Abdullah

Isa

Amlus

et al. 2021

J. Phys.: Conf. Ser.

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This paper describes partial discharge (PD) characteristics for on-site measurement based on rise time waveform. The implications of this kind of PD characteristics is becoming increasingly important as with rapid development of detection PD signal in medium voltage. The rise times characteristics used in insulation condition monitoring to keep getting earlier information about insulation condition of the high voltage or medium voltage equipment. Currently, there is minimal research working on the characteristic especially rise time and due to this, it need to further develop comprehensive characteristics PD detection at such extreme conditions. An on-site PD measurement using Rogowski coil (RC) and MATLAB analysis focusing on rise times is presented here. Measurement was setup based on IEC60270 standard and the circuit in the standard is followed. Insulation used in this work is XLPE type under 11 kV voltage stress and there were eight location was perform in order to get clear picture of the pattern. Overall result indicates that, the rise times ranges is between 1.5 and 5 ns. The impact of rise time characteristics on the PD signal based on real measurement is huge since maintenance unit can performed measurement in short time compare to previous method. Specifically, the total number of PDs measurement and severity range are shown with cable length. The rise time pattern are always provide different value depend on level severity and frequency. However, when combining result rise time from 8 substation measured, it provide a significant result.

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Modelling and simulation of online partial discharge measurement for medium voltage power cable

Cited by 2 publications

References 20 publications

Comparison of On-Line Partial Discharge Detection Techniques for High Voltage Power Cable Joints and Terminations

Comparison of On-Line Partial Discharge Detection Techniques for High Voltage Power Cable Joints and Terminations

Partial Discharge Characteristics for On-Site Measurement based on Rise Time Waveform

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