Determining the leakage current resistive component by the orthogonal vector method

Olesz, Marek

doi:10.1109/iclp.2018.8503471

Cited by 3 publications

(4 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This requires the use of a calibrated measurement system based on sensitive current clamps with a conduction band of at least 1 kHz. In addition to ensuring a low level of amplitude and phase error, appropriate methods of signal analysis should be used in the measurements to determine the active component of the leakage current [30,36,44]. However, the determined active component can be considered as a diagnostic indicator only after taking into account the basic factors affecting the level of the tidal current, which include the limiter temperature, mains voltage and the content of its higher harmonics.…”

Section: Discussionmentioning

confidence: 99%

“…In order to correctly determine the active component of the leakage current, it is easiest to calculate its value using the appropriate measurement procedures only on the basis of the leakage current oscillogram. For this purpose, various algorithms are used, among which the shift method [30,36] and orthogonal vectors [44] should be mentioned. In operational applications, the current of the arrester is measured using current clamps with specific frequency characteristics that allow for the proper calibration of the measuring systems and determination of the measurement errors.…”

Section: Errors and Their Correction In Determining The Active Compon...mentioning

confidence: 99%

See 1 more Smart Citation

Leakage Current Measurements of Surge Arresters

Olesz,

Litzbarski,

Redlarski

2023

Energies

Self Cite

View full text Add to dashboard Cite

The paper presents the methods of assessing the technical condition of varistor surge arresters used in laboratory tests and in operation—performed without disconnecting the arresters from the network. The analysis of the diagnostic methods was supplemented with the results of the measurements of the leakage current of arresters coming directly from their production and used in the power industry. Among the available methods of evaluating the technical condition of arresters, mainly indicator solutions (temperature and operation counter) and the measurement of the selected parameters of the leakage current are used. In the latter, the method of determining the resistive component of the leakage current, determined on the basis of the analysis of the voltage and current waveforms, or only the arrester current, has become widespread. In this type of measurement, current clamps are used in the operation, and additionally, in voltage measurements, voltage transformers are used, where you have to take into account the fundamental, additional sources of errors discussed in the article. These errors and the dispersion resulting from the production technology may fundamentally hinder the proper assessment of the technical condition; hence, it is so important to properly recognize the listed basic sources of measurement uncertainty. In addition, the analysis should take into account three factors related to external conditions: temperature, the voltage applied to the arrester, and the content of higher harmonics in the supply voltage, for which appropriate methods have been provided to determine the active component of the leakage current for reference conditions. This article presents the results of the measurements of the leakage currents of surge arresters measured with various methods.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Errors and Their Correction In Determining The Active Compon...mentioning

confidence: 99%

Leakage Current Measurements of Surge Arresters

Olesz,

Litzbarski,

Redlarski

2023

Energies

Self Cite

View full text Add to dashboard Cite

show abstract

“…114). Both of them have a crucial meaning for grain growth process, which was earlier discussed in the literature[1],[2]. Results of the Le Bail refinement are gathered in TableS1of the ESI.…”

mentioning

confidence: 86%

“…aging tests performed at the maximum current declared by the manufacturer (Imax). Another possibility is to check these devices by three series of 15 current strikes of 8 µs /20 µs and measure Il after each of the series [2].…”

Section: Introductionmentioning

confidence: 99%

Quality Assessment of Low Voltage Surge Arresters

Litzbarski¹,

Olesz²,

Wojtas³

et al. 2022

IEEE Access

View full text Add to dashboard Cite

Users expect reliable operation of the surge arrester during overvoltages, which may originate from a switching process or a lightning discharge. The necessary conditions to guarantee these expectations are: appropriate construction of the surge arrester, its production being maintained in accordance with technical standards, and a positive results of the type test. The recipient, especially when purchasing large quantities of the product, can check the final quality of the product through selective testing of samples from the market in order to find the best supplier. This manuscript specifies the basic parameters of low-voltage (LV) surge arresters of four manufacturers. Basic electrical parameters, i.e. leakage current and reference voltage before and after the discharge current of 8 µs /20 µs, were determined for 10 randomly selected surge arresters of each manufacturer. Moreover one sample of each varistor batches was aged by 50 simulated lightning strikes. The obtained results of structural analysis indicate that the crystal structure of the varistor materials changes after ageing process, affecting its electrical properties. The proposed research methodology can be employed as a basis for forecasting the stability of the arrester parameters under operating conditions.

show abstract

Leakage Currents Measurements of Surge Arresters

Olesz¹,

Litzbarski²,

Redlarski³

2023

Preprint

View full text Add to dashboard Cite

The paper presents the methods of assessing the technical condition of varistor surge arresters used in laboratory tests and in operation - performed without disconnecting the arresters from the network. The analysis of diagnostic methods was supplemented with the results of measurements of the leakage current of arresters coming directly from production and used in the power industry. Among the available methods of evaluating the technical condition of arresters, mainly indicator solutions (temperature, operation counter) and using the measurement of selected parameters of the leakage current are used. In the latter, the method of determining the resistive component of the leakage current, determined on the basis of the analysis of voltage and current waveforms, or only the arrester current, has become widespread. In this type of measurements, current clamps are used in operation, and additionally in voltage measurements from voltage transformers, where you have to take into account the fundamental, additional sources of errors discussed in the article. These errors and dispersion resulting from the production technology may fundamentally hinder the proper assessment of the technical condition, hence it is so important to properly recognize the listed basic sources of measurement uncertainty. In addition, the analysis should take into account three factors related to external conditions - temperature, voltage applied to the arrester and the content of higher harmonics in the supply voltage for which appropriate methods have been provided to determine the active component of the leakage current for reference conditions.

show abstract

Determining the leakage current resistive component by the orthogonal vector method

Cited by 3 publications

References 6 publications

Leakage Current Measurements of Surge Arresters

Leakage Current Measurements of Surge Arresters

Quality Assessment of Low Voltage Surge Arresters

Leakage Currents Measurements of Surge Arresters

Contact Info

Product

Resources

About