Rogowski air coil sensor technique for on-line partial discharge measurement of power cables

Zhang, Z.S.; Xiao, Di; Li, Y.

doi:10.1049/iet-smt:20080025

Cited by 45 publications

(20 citation statements)

References 9 publications

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“…The measurements described below, were made, in order to obtain a controlled environment to minimize the influence of electrical noise, and to facilitate the characterization of the dispersion of the clusters of pulses for each type of PD source. However, as it will be indicated in Section 4.1.3 , it is not possible to completely minimize the influence of noise during the acquisitions, especially when the measurements are performed with a RC sensor, whose signal-to-noise ratio (SNR) is low compared to other types of inductive sensors [ 20 , 21 , 22 ].…”

Section: Resultsmentioning

confidence: 99%

A Validation of the Spectral Power Clustering Technique (SPCT) by Using a Rogowski Coil in Partial Discharge Measurements

Ardila-Rey

Álvarez

Barrueto

2015

Sensors

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Both in industrial as in controlled environments, such as high-voltage laboratories, pulses from multiple sources, including partial discharges (PD) and electrical noise can be superimposed. These circumstances can modify and alter the results of PD measurements and, what is more, they can lead to misinterpretation. The spectral power clustering technique (SPCT) allows separating PD sources and electrical noise through the two-dimensional representation (power ratio map or PR map) of the relative spectral power in two intervals, high and low frequency, calculated for each pulse captured with broadband sensors. This method allows to clearly distinguishing each of the effects of noise and PD, making it easy discrimination of all sources. In this paper, the separation ability of the SPCT clustering technique when using a Rogowski coil for PD measurements is evaluated. Different parameters were studied in order to establish which of them could help for improving the manual selection of the separation intervals, thus enabling a better separation of clusters. The signal processing can be performed during the measurements or in a further analysis.

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Section: Resultsmentioning

confidence: 99%

A Validation of the Spectral Power Clustering Technique (SPCT) by Using a Rogowski Coil in Partial Discharge Measurements

Ardila-Rey

Álvarez

Barrueto

2015

Sensors

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“…Table 1 represents the measured electrical parameters of the Rogowski coil. The lumped parameters (RLC) equivalent electrical model [10] is as Fig. 5.…”

Section: Rogowski Coilmentioning

confidence: 99%

Frequency Response Characteristics of Rogowski Coil with Active Integrator for Lightning Measurement

Paophan¹,

Kunakorn²,

Yutthagowith³

et al. 2020

ECTI-EEC

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This paper presents frequency response characteristics of a Rogowski coil which is developed with an active integrator. Experiments are performed in a laboratory with a frequency function generator as a source. The frequency responses of the Rogowski coil and the integrator are recorded with both magnitude and phase in order to verify the capability in measuring lightning current waveshapes. For availability in lightning current measurement in the electrical system, the developed Rogowski coil is specifically designed as a clamp on device. The standard lightning current waveshape of the positive first stroke impulse (10/350 µs) is simulated to investigate the measuring system. It is found that the frequency bandwidth of the Rogowski coil with the integrator developed in this paper is proper in lightning current measurement.

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“…Up to now, numerous Rogowski coils have been designed for different applications, such as pulsed current measurement, relay protection, and partial discharge monitoring. [3][4][5][6][7] These coils can be divided into self-integrating coils and differentiating coils by their operation mode. Also, the cores have two types, "air core" and "magnetic core."…”

Section: Introductionmentioning

confidence: 99%

A novel design of Rogowski coil for measurement of nanosecond-risetime high-level pulsed current

Han

Ding

et al. 2015

Review of Scientific Instruments

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In pulsed power systems, pulsed currents with risetimes from nanosecond to microsecond can be effectively measured by self-integrating Rogowski coils. Appropriate design of the structure and the integrating resistor is crucial to the high-frequency response of a coil. In this paper, several novel designs of Rogowski coil's integrating resistors were proposed and tested. Experimental results showed that the optimized coil could response square waves with fronts of ∼1.5 ns and had a sensitivity of ∼0.75 V/kA. The maximal peak current was designed as 100 kA.

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Rogowski air coil sensor technique for on-line partial discharge measurement of power cables

Cited by 45 publications

References 9 publications

A Validation of the Spectral Power Clustering Technique (SPCT) by Using a Rogowski Coil in Partial Discharge Measurements

A Validation of the Spectral Power Clustering Technique (SPCT) by Using a Rogowski Coil in Partial Discharge Measurements

Frequency Response Characteristics of Rogowski Coil with Active Integrator for Lightning Measurement

A novel design of Rogowski coil for measurement of nanosecond-risetime high-level pulsed current

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