transformer testing Articles
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Studies on three feature extraction methods for the location and classification of dynamic fault patterns during impulse testing of transformer winding
Many computer aided classifiers have been employed for identification of impulse insulation failure parameters, viz. type, condition of insulation and location using significant features extracted from winding current. Classification accuracy of these classifiers is dependent on the ability of extracted features. In this present approach, an attempt has been made to identify suitable feature ...
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Modelling oil degradation in electric transformer oil under typical loads
In testing transformer oils for durability, it is desirable to use typical transformer operating conditions with appropriate allowances for factor of safety against temperature and voltage. The kinetics of degradation of used type II transformer oil with original flash point of 148?C, pour point of 51?C, and water content of 4 ppm was investigated. Assuming that the oil temperature in models Pr01 ...
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Classification of impulse fault response patterns in transformers using cascaded wavelet network
Accurate identification of winding faults that may develop during impulse testing of transformer is of great importance for ensuring reliability and quality of power supply. In the present work a wavelet network based methodology has been proposed for feature extraction as well as classification of those features for impulse fault pattern identification. The classification involves two networks, ...
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Why is a transformer hermetically sealed?
Hermetically Sealed Transformers: Protecting Your Investment Transformers are an essential component of many electrical systems, serving to step-up or step-down voltage levels as required. However, transformers can be vulnerable to damage from a range of environmental factors, such as dust, moisture, and other contaminants. That’s why hermetic sealing is a critical feature in ...
By Protrafo
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Project - St. Lawrence/Fermeuse Wind Farm
Client: ENEL/One Wind Status: Completed One Wind’s St. Lawrence and Fermeuse Wind Farms, located in Newfoundland & Labrador, provide a combined 54MW of green energy capacity to the province’s power grid, providing enough electricity to power about 14,000 homes collectively. Pennecon Technical Services (PTS) were contracted by ENEL in 2008 to provide start-up and ...
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Methods of oil/fuel analysis
PC GlobeCore can propose you to make a reclaiming test of yours example of fuel (oil) to verify the possibility of clean it. If the oil is contaminated and not suitable for use, filtration can be recommended. Or, you can also make this test by yourself using our laboratory/test-bench transformer oil vacuum regeneration system UVR. The regenerated samples exceeded yours expectations. Average ...
By GlobeCore PC
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EMC electromagnetic compatibility test brief description
EMC test is a comprehensive assessment of electromagnetic interference (EMI) and immunity (EMS) of electronic products. the purpose of EMC test is that electrical equipment should be able to work normally in a certain electromagnetic environment, that is, with a certain degree of electromagnetic immunity (EMS); the electromagnetic disturbance generated by the electrical equipment itself should ...
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