Recognition of combined defects with high-temperature overheating based on the dissolved gas analysis

Shutenko, Оleg; Kulyk, Oleksii

doi:10.1007/s12046-022-01919-x

Cited by 4 publications

(4 citation statements)

References 31 publications

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“…4 і 5). У високовольтних трансформаторах, в яких T3&SD [60], спостерігається вищий вміст Н2 стосовно СН4 (СН4/Н2 < 1), а також вищий вміст С2Н2. Схожі значення відсоткового вмісту газів отримано і для високотемпературних T3&Discharges.…”

Section: вступunclassified

“…При цьому, як Вісник Національного технічного університету «ХПІ». Серія: Енергетика надійність та енергоефективність, № 1 (6) 2023 35 показано в [60], для таких дефектів відношення СН4/Н2 може як перевищувати 1, так і бути меншим за 1. Розпізнати ці два типи дефекту можна з використанням номограм [60].…”

Section: вступunclassified

“…Серія: Енергетика надійність та енергоефективність, № 1 (6) 2023 35 показано в [60], для таких дефектів відношення СН4/Н2 може як перевищувати 1, так і бути меншим за 1. Розпізнати ці два типи дефекту можна з використанням номограм [60]. У трансформаторах з T3&D2 має місце вищий вміст С2Н2, який є другим газом за вмістом після С2Н4.…”

Section: вступunclassified

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A method for recognising the type of fault in oil-filled equipment based on the gas percentage

Kulyk

2023

EREE

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One of the main tasks of the electricity sector is to ensure a reliable supply of electricity. Transformers play a key role in this, as their operation determines the reliability of the energy infrastructure. One of the factors that is common to all countries and affects the reliability of equipment is the ageing of this equipment as a result of various processes, including faults developing inside this equipment. One of the most effective methods of diagnosing high-voltage oil-filled equipment is the dissolved gas analysis, which allows for the recognition of various types of faults. Using different diagnostic criteria (gas ratios, percentage of gases, and gas to gas ratios with maximum content), different types of faults can be identified. One of the most commonly used diagnostic criteria is the percentage of gases. However, the reliability of fault detection by different methods for the same data varies considerably. The greatest difficulty arises when recognising combined faults. Therefore, the issue of developing a method for recognising the type of fault based on the results of the analysis of gases dissolved in oil using the percentage of gases as a diagnostic criterion is relevant and of practical importance. The article proposes an analytical method for recognising the type of fault in high-voltage oil-filled equipment based on the percentage of five gases in the oil. The article considers the recognition of different types of faults, for which the gases with the maximum content are hydrogen, methane, ethane, ethylene and acetylene. The values of the percentage of gases characteristic of a particular type of fault are given in the form of tables, which show the ranges (minimum and maximum values) and average values of the percentage of gases. As a result of the analysis, for the first time, the ranges of percentage gas content values for 50 groups of faults of various types, including combined faults, were established. This makes it possible to significantly increase the number of faults that can be recognised using the percentage of gases as a diagnostic criterion. In the process of developing the method, it was found that in a number of cases, it is not enough to use only the percentage of gases, but there is an objective need to use both the values of gas ratios and fault nomograms to determine the type of fault.

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A method for recognising the type of fault in oil-filled equipment based on the gas percentage

Kulyk

2023

EREE

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“…For example, for low‐temperature thermal fault that progresses to partial discharges [21], both the values of gas ratios and the percentage of gas content coincide with the values of the criteria characteristic of purely thermal faults. A similar situation occurs with some high‐temperature thermal fault that transform into discharges [22]. In both cases, it is possible to recognise the fault type only using the gas pattern method.…”

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confidence: 99%

Method of fault‐type recognition based on the dissolved gas analysis using a set of diagnostic criteria

Shutenko,

Kulyk

2023

IET Generation Trans & Dist

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This paper proposes a method for recognising the fault type using a set of diagnostic criteria. Existing approaches to the interpretation of dissolved gas analysis (DGA) results usually rely on single diagnostic criteria. The proposed method solves the problems of incomplete use of diagnostic information and discrepancies in the norms and criteria for recognising the same fault inherent in the existing methods. The feature of the method is the analysis of the compliance of the DGA results of the diagnosed equipment with the ones of the equipment with a confirmed diagnosis from the fault database. This approach outperforms the existing methods in the number of faults recognised, allowing a wider range of faults to be detected, including combined faults. In addition, the method provides an opportunity to identify possible causes and localise the fault. This feature is unique and provides a significant advantage when interpreting DGA results. The proposed method demonstrates significantly higher accuracy (100%) in recognising various fault types, including combined faults, in comparison to existing methods (about 50%). The proposed method has a 60% success rate in determining the cause and location of a fault, but this figure depends on the database with faults of various types used.

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Comparative Analysis of New Methods for Defect Type Recognition by Dissolved Gas Analysis

Shutenko

Kulik

2022

2022 IEEE 3rd KhPI Week on Advanced Technology (KhPIWeek)

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Recognition of combined defects with high-temperature overheating based on the dissolved gas analysis

Cited by 4 publications

References 31 publications

A method for recognising the type of fault in oil-filled equipment based on the gas percentage

A method for recognising the type of fault in oil-filled equipment based on the gas percentage

Method of fault‐type recognition based on the dissolved gas analysis using a set of diagnostic criteria

Comparative Analysis of New Methods for Defect Type Recognition by Dissolved Gas Analysis

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