A review of dissolved gas analysis measurement and interpretation techniques

Bakar, Norazhar Abu; Abu-Siada, A.; Islam, Syed

doi:10.1109/mei.2014.6804740

Cited by 318 publications

(157 citation statements)

References 33 publications

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“…Table 2. Dorneburg ratio key gas [13] Based on Donenburg ratio, the arching fault condition was detected for PO which is agreed with experimental work. However, for RBO there is no valid fault condition can be obtained using this method.…”

Section: Dga For Electrical Stresssupporting

confidence: 86%

Dissolved Gas Analysis (DGA) of natural ester oils under arcing faults

Hamid¹,

Ishak²,

Arifin³

et al. 2018

J. Fundam and Appl Sci.

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Dissolved gas analysis is one of diagnostic technique for monitoring the internal condition of transformer. However, DGA analyses for natural ester especially palm oil and rice bran oil still lacking. Therefore, this paper presents the investigation gassing behaviour under lightning impulse breakdown used namely Palm oil (PO) and Rice Bran oil (RBO). The DGA result showed that C2H H2 detected the highest amount of gases for both samples experiments were interpreted in different DGA method such as Dornenburg ratio, Roger ratio, IEC Gas method and Duval Triangle method to find the best technique for natThe conducted experiment shows that PO and RB and gassing characteristics to mineral oil, but still requiring modification of design and operating parameters.

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Section: Dga For Electrical Stresssupporting

confidence: 86%

Dissolved Gas Analysis (DGA) of natural ester oils under arcing faults

Hamid¹,

Ishak²,

Arifin³

et al. 2018

J. Fundam and Appl Sci.

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“…The quantity and composition of the liberated gases depends on the type of fault [94]. The distribution of these gases can help identifying different types of PD using standard interpretation methods [95,96].…”

Section: Acoustical and Optical Detection Of Pdsmentioning

confidence: 99%

Electrical-Based Diagnostic Techniques for Assessing Insulation Condition in Aged Transformers

Fofana

Hadjadj

2016

Energies

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Abstract:The condition of the internal cellulosic paper and oil insulation are of concern for the performance of power transformers. Over the years, a number of methods have been developed to diagnose and monitor the degradation/aging of the transformer internal insulation system. Some of this degradation/aging can be assessed from electrical responses. Currently there are a variety of electrical-based diagnostic techniques available for insulation condition monitoring of power transformers. In most cases, the electrical signals being monitored are due to mechanical or electric changes caused by physical changes in resistivity, inductance or capacitance, moisture, contamination or aging by-products in the insulation. This paper presents a description of commonly used and modern electrical-based diagnostic techniques along with their interpretation schemes.

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“…Natural aging, thermal and electrical failures generate typical fault gases, which dissolve in the insulating oil. By analyzing these fault gas profiles evaluation of kind and severity of the fault can be estimated [40,41]. Usually, DGA assesses the severity of emerging faults using annually taken oil samples and evaluates both, ratios of different gases and long term gas generation rates [42].…”

Section: Dissolved Gas Analysismentioning

confidence: 99%

Diagnostic Measurements for Power Transformers

et al. 2016

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Abstract:With the increasing age of the primary equipment of the electrical grids there exists also an increasing need to know its internal condition. For this purpose, off-and online diagnostic methods and systems for power transformers have been developed in recent years. Online monitoring is used continuously during operation and offers possibilities to record the relevant stresses which can affect the lifetime. The evaluation of these data offers the possibility of detecting oncoming faults early. In comparison to this, offline methods require disconnecting the transformer from the electrical grid and are used during planned inspections or when the transformer is already failure suspicious. This contribution presents the status and current trends of different diagnostic techniques of power transformers. It provides significant tutorial elements, backed up by case studies, results and some analysis. The broadness and improvements of the presented diagnostic techniques show that the power transformer is not anymore a black box that does not allow a view into its internal condition. Reliable and accurate condition assessment is possible leading to more efficient maintenance strategies.

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A review of dissolved gas analysis measurement and interpretation techniques

Cited by 318 publications

References 33 publications

Dissolved Gas Analysis (DGA) of natural ester oils under arcing faults

Dissolved Gas Analysis (DGA) of natural ester oils under arcing faults

Electrical-Based Diagnostic Techniques for Assessing Insulation Condition in Aged Transformers

Diagnostic Measurements for Power Transformers

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