Modelling of dielectric processes in oil-paper insulation for replacement of Return Voltage Measurement

Szirmai, Ágnes; Tamus, Zoltán Ádám

doi:10.1109/diagnostika.2016.7736490

Cited by 6 publications

(10 citation statements)

References 8 publications

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“…A partir del año 2010 hasta la actualidad, las publicaciones relacionadas con este tema han sido enfocadas a mejorar la calidad de la medición e interpretación de resultados, incluyendo parámetros en el dominio del tiempo y de la frecuencia [89][90]. También se debe destacar que en el año 2016 se publica un artículo de Z. Ádám y Á. Szirmai [91] donde se intenta modelar la técnica de RVM usando software especializado.…”

Section: Breve Historiaunclassified

Técnicas para el diagnóstico de transformadores de potencia: Una revisión crítica

Henao

Fernández

Gómez

2020

Ingeniare. Rev. chil. ing.

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Los sistemas de transmisión de energía eléctrica comprenden un enlace fundamental en el sector productivo y social de un país. Uno de los principales componentes de estos sistemas son los transformadores de potencia que permiten la exportación de energía en alta tensión a grandes distancias. La falla de un transformador de potencia puede conllevar el colapso parcial o total de un sistema eléctrico. Existen diversas técnicas para el mantenimiento y diagnóstico de dichos equipos. En este trabajo se realiza una revisión crítica de ocho de las principales técnicas de diagnóstico de transformadores de potencia incluyendo una descripción básica y evolución histórica, teniendo en cuenta que actualmente son aplicadas en línea o que tienen un alto potencial para llegar a serlo. Palabras clave: Técnicas de diagnóstico en línea, monitoreo, transformadores de potencia, revisión crítica.

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Section: Breve Historiaunclassified

Técnicas para el diagnóstico de transformadores de potencia: Una revisión crítica

Henao

Fernández

Gómez

2020

Ingeniare. Rev. chil. ing.

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“…In this paper, based on the data of the south-west power system company, following diagnostic tests and measurements have been considered for distribution transformers: There are other diagnostic tests for transformers, such as time-domain dielectric spectroscopy measurement [28], return voltage technique [29,30], and Frequency Domain Spectroscopy (FDS) method [31]. It is possible to consider various diagnostic tests in the proposed method.…”

Section: The Faults and Diagnostic Solutions Of Distribution Transformentioning

confidence: 99%

Optimal Techno-economic Sequence-based Set of Diagnostic Tests for Distribution Transformers Using Genetic Algorithm

Hashemi‐Dezaki

Rubanenko

Hryshchuk

2020

Period. Polytech. Elec. Eng. Comp. Sci.

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The diagnostic measurement and tests of transformers are essential. Also, the costs of diagnostic tests are considerable. Hence, proposing a method to determine an economic-technical sequence-bases set of diagnostic tests for transformers is useful and interesting. In this paper, a new method is proposed to determine the optimal sequence-based set of diagnostic tests for distribution transformers. A new objective function based on the branch and bound concept is developed in this paper. The proposed optimization problem is solved by using the Genetic Algorithm (GA). The statistical data regarding the experimental diagnostic tests for more than 20 distribution transformers of South-West Power System Company (Pivdenno-Zakhidna Power System) located in Ukraine have been used. The usage of the actual statistical data of distribution transformers is one of the most important contributions of this paper. The comparison of the obtained optimum test results and those of a typical conventional non-optimum sequence of diagnostic tests illustrate the advantages of the proposed method. By applying the proposed method, it is achievable to perform the comprehensive diagnostic tests with the minimum required costs.

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“…References [12]- [14] used the extend Debye model to model the PDC or RVM data by the least square method. References [15], [16] used Maxwell or Debye model to simulate RVM curves, which gain the good results. These researches are fitting by complete PDC or RVM experimental data curves as input.…”

Section: Introductionmentioning

confidence: 99%

“…How to establish appropriate low-frequency equivalent circuit is the key. Previous studies [12]- [14], [16] were based on extended Debye model. However, the oil-paper insulation consists of two dielectrics.…”

Section: Introductionmentioning

confidence: 99%

Parameters Identification and Application of Equivalent Circuit at Low Frequency of Oil-Paper Insulation in Transformer

Xie

Ruan

2020

IEEE Access

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The low frequency section of frequency domain spectroscopy (FDS) of oil-paper insulation system can effectively reflect the ageing state and moisture of the oil-immersed paper. Meanwhile, steady-state insulation resistance is the one of indexes for the condition of transformer. In actual measurement, these two both are time-consuming and poor accessibility, thereby restraining their field applications. Aim at this problem, this paper analyses the polarization process of the oil-paper insulation in transformer, and adopts a low frequency equivalent circuit model for the oil-paper insulation to characterize the polarization process at low frequency. The simulated annealing particle swarm optimization (SAPSO) algorithm is proposed to identify the parameters in equivalent circuit, which are affected by change of insulation state. Compared with the experimental results, the errors of the steady-state insulation resistance and the tan δ below 10 −3 Hz, which are calculated by the identified parameters, are less than 2.5%. This method can avoid the influence from external environment and reduce the measurement time. The time and frequency domain parameters calculated can provide reference for the ageing assessment of oil-immersed paper.

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Modelling of dielectric processes in oil-paper insulation for replacement of Return Voltage Measurement

Cited by 6 publications

References 8 publications

Técnicas para el diagnóstico de transformadores de potencia: Una revisión crítica

Técnicas para el diagnóstico de transformadores de potencia: Una revisión crítica

Optimal Techno-economic Sequence-based Set of Diagnostic Tests for Distribution Transformers Using Genetic Algorithm

Parameters Identification and Application of Equivalent Circuit at Low Frequency of Oil-Paper Insulation in Transformer

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