Calibration of on-line partial discharge measuring system using Rogowski coil in covered-conductor overhead distribution networks

Hashmi, G.Murtaza; Lehtonen, Matti; Nordman, Mikael

doi:10.1049/iet-smt.2009.0124

Cited by 51 publications

(23 citation statements)

References 10 publications

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“…Thanks to its versatility, working principle, reduced dimensions, and ease of installation, in the last decade the Rogowski coil has been implemented in many applications [ 28 ] and has been subject to a variety of different studies to improve its knowledge and operation. For example, it is commonly adopted for the detection of partial discharges (PD) [ 29 , 30 ]. Furthermore, its large bandwidth makes it suitable for different high frequency applications [ 31 , 32 , 33 ].…”

Section: Introductionmentioning

confidence: 99%

Smart Characterization of Rogowski Coils by Using a Synthetized Signal

Mingotti

Peretto

Tinarelli

2020

Sensors

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With the spread of new Low-Power Instrument Transformers (LPITs), it is fundamental to provide models and characterization procedures to estimate and even predict the LPITs’ behavior. In fact, distribution system operators and designers of network models are looking for all forms of information which may help the management and the control of power networks. For this purpose, the paper wants to contribute to the scientific community presenting a smart characterization procedure which easily provides sufficient information to predict the output signal of a Low-Power Current Transformer (LPCT), the Rogowski coil. The presented procedure is based on a synthetized signal applied to the Rogowski coil. Afterwards, the validity of the procedure is assessed within the Matlab environment and then by applying it on three off-the-shelf Rogowski coils. Simulations and experimental tests and results involving a variety of distorted signals in the power quality frequency range and by adopting a quite simple measurement setup demonstrated the effectiveness and the capability of the procedure to correctly estimate the output of the tested device.

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Section: Introductionmentioning

confidence: 99%

Smart Characterization of Rogowski Coils by Using a Synthetized Signal

Mingotti

Peretto

Tinarelli

2020

Sensors

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“…Chiampi studies on the development and application of a programmable partial discharge calibrator [1], which describes a programmable partial discharge calibrator. Hashmi GM discussed line partial discharge detection enriching the partial discharge theory [2]. Therefore, the test environment is complexity and it is need the PD map to analysis in detail to avoid wrong judgments.…”

Section: Introductionmentioning

confidence: 99%

Characteristic Analysis of Partial Discharge Detection in GIS

Wang¹,

Li²,

Liu³

et al. 2012

JDCTA

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Partial discharge (PD) detection is a valuable method for the estimation of GIS condition, and the PD mapping is benefit for GIS defects identification. To investigate the PD characteristic of the GIS model, this paper simulates different PD maps of various fault simulations, and the characteristics of PD map is acquired by the pulse amplitude, phase and the discharge density to identify the discharge type effectively by characteristic parameters. To simulate the discharges in GIS there are five PD models are constructed in GIS, and this study may provide theoretical and practical bases for the GIS equipment estimation. Experiments show that this method using the PD map characters are effective for equipment estimation.

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“…Added to the circuit directly across sensor coil terminals is a terminating resistor R T , which provides active load for damping the resonant oscillations of the circuit. While its role has not been emphasized [6][7], it is a major component that can define the sensor operating mode. The inductive sensor system output is an active measurement device, represented as a voltmeter in Fig.…”

Section: High-frequency Sensor Characteristics and Connection To mentioning

confidence: 99%

“…This is where the wide-bandwidth air-core inductive sensors provide outstanding performance. Implementing the inductive sensors for partial discharge measurements has been proposed also before [6] [7] with sensors indicated bandwidths of up to several hundreds of MHz [8], although the role of resonance and the measurement system characteristics has generally been neglected. The possible different operating modes of an inductive sensor have also been presented in [9] while criteria for the pulsed phenomena measurements have not been clearly identified in the context.…”

Section: Introductionmentioning

confidence: 99%

Air-Core Sensors Operation Modes for Partial Discharge Detection and On-line Diagnostics in Medium Voltage Networks

Kütt¹,

Shafiq²,

Lehtonen³

et al. 2013

Electrical, Control and Communication Engineering

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-In this paper, sensors for the application of high voltage networks insulation diagnostics are focused on. For detection and localization of the components with insulation deterioration, observing the partial discharge transients is one of the main methods. However, as the partial discharge traces are transients of extremely short duration, monitoring of such transients is also a challenging task. This paper presents the inductive sensors that would be suitable for the on-line partial discharge monitoring and the selection of operating mode and characteristics are discussed. The issues of resonance and signal processing are analyzed for the targets of reaching highest accuracy of the measurements. Operation criteria and performance limits such as sensitivity and upper bandwidth are particularly discussed. It is presented that in order to reach highest accuracy and sensitivity the sensor should be used in damped mode. Applying the accurate air-core inductive sensors would allow the condition monitoring systems to be cheaper and thus mounted for permanent and continuous condition monitoring in various locations in the power distribution networks.

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Calibration of on-line partial discharge measuring system using Rogowski coil in covered-conductor overhead distribution networks

Cited by 51 publications

References 10 publications

Smart Characterization of Rogowski Coils by Using a Synthetized Signal

Smart Characterization of Rogowski Coils by Using a Synthetized Signal

Characteristic Analysis of Partial Discharge Detection in GIS

Air-Core Sensors Operation Modes for Partial Discharge Detection and On-line Diagnostics in Medium Voltage Networks

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