Abstract
The method of fault diagnosis based on dissolved gas analysis (DGA) is of great importance to detect possible failures in the transformer and to improve the safety of the electrical system. The DGA data of the transformer in the smart grid has the characteristics of a large amount, different types and a low density of values. Since the power transformer is an important type of power supply in the electrical network, this document provides a complete overview of the power transformer and describes how to diagnose faults. Furthermore, on-line monitoring, the method of fault diagnosis and condition-based maintenance strategy decision-making method as also have been described. The paper presents detailed literature on the recent advancements and methods being adopted by various authors on fault detection.
Highlights
The method of fault diagnosis based on dissolved gas analysis (DGA) is of great importance to detect possible failures in the transformer and to improve the safety of the electrical system
Electrical network, this document provides a complete overview of the power transformer and describes how to diagnose faults
Fuzzy Logic Transformer Fault Diagnosis System (FLTFDS) depends on three normal rules: the International Electro-Technical Commission standard (IEC Code Standard), the Central Electric Generating Board (CEGB) standard dependent on the four Roger proportions, lastly the Duval Triangle strategy; these models are utilized to decipher transformer shortcomings in fuzzy logic
Summary
Is used as a combination strategy to build a diagnostic model. The fault that occurs in a transformer is divided into two types: external and internal errors. External faults occur outside the transformer: overvoltage, overflow, under frequency, and short circuits of the external system. Internal faults are those that occur inside the transformer: winding from round to round, round to ground, excess. [4] this article uses the Fuzzy Logic Transformer Fault Diagnosis System (FLTFDS) as an application of dissolved gas analysis to diagnose the dominant transformer failure created by electrical and thermal voltages. FLTFDS depends on three normal rules: the International Electro-Technical Commission standard (IEC Code Standard), the Central Electric Generating Board (CEGB) standard dependent on the four Roger proportions, lastly the Duval Triangle strategy; these models are utilized to decipher transformer shortcomings in fuzzy logic. IC-based methodologies have arisen as quickly advancing exceptionally viable ways to deal with utilizing disintegrated gas examination (DGA) information to analyze power transformer failures
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