Transformer Monitoring Articles
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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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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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What are the main key differences between a dry-type transformer and a oil filled transformer?
There are several key differences between a dry-type transformer and an oil-filled transformer. The main differences include the type of insulation used, the cooling method, the size and weight, and the applications for which they are typically used. One of the main differences between a dry-type transformer and an oil-filled transformer is the type of insulation used. A dry-type transformer ...
By Protrafo
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Did you know Dry units have several advantages over Liquid units?
MGM Transformer is one of the only companies to offer both Dry and Liquid units, which makes us uniquely eligible to understand the trade offs between the two construction choices. We aim to dispel some common biases in the industry towards a liquid design and explain why, in some applications, dry-type transformers can be the ideal choice. While there are always trade-offs when ...
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MTHPA
OVERVIEW Methyl tetrahydrophthalic anhydride (MTHPA, MeTHPA) is a new type of liquid organic acid anhydride epoxy resin curing agent with excellent performance. Because the anhydride curing agent has better heat resistance and chemical stability than the amine curing agent, and can maintain excellent physical and electrical properties at higher temperatures, in recent years, it has been insulated ...
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MTHPA WNY1008
Do you know how to use epoxy resin and hardener? Our MTHPA product of WNY-1008 series is widely used in epoxy potting materials, casting materials, bonding, lamination, impregnation, molding and winding processes, as well as insulation bushings, oil pipelines, fishing machinery and so on.For example: casting and filling electronic components, large dry-type transformers, high-voltage switches, ...
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MTHPA
OVERVIEW Methyl tetrahydrophthalic anhydride (MTHPA, MeTHPA) is a new type of liquid organic acid anhydride epoxy resin curing agent with excellent performance. Because the anhydride curing agent has better heat resistance and chemical stability than the amine curing agent, and can maintain excellent physical and electrical properties at higher temperatures, in recent years, it has been insulated ...
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Busbar Insulation Coating
The silicone rubber insulation coating is made from special silicone rubber, high-performance material and other polymers by polymer blending technology. Its basic structural unit is silicon - oxygen chain while its side chain is connected by silicone with another organic radical group. Therefore, this structure makes the coating well combine the properties of both organic and inorganic compound. ...
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Analysis of the conditions of use of the high-frequency power transformer and design principles
According to the conditions of use of the high-frequency power transformer (transformer manufacturers) analysis, the overall two-fold: the feasibility and electromagnetic compatibility. Only pay attention to the feasibility of environmental protection awareness, must pay attention to electromagnetic compatibility. Feasibility refers to the specific conditions of use, high-frequency power ...
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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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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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Distribution system insulator monitoring using video surveillance and support vector machines for complex background images
Development of substation monitoring system (SMS) with improved features for substation automation purposes has become one of the potential areas of research particularly in developing countries like India. The unending SMS automation systems usually incorporate protection of the distribution system from different faults based on monitoring of parameters, such as voltage, current and so forth. ...
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Redundant combustion plant for Novartis
Type HOFGAS®- IFM4c/2200/1500/60/180 Commissioning 2004 Site Novartis (Basel, CH) Situation In order to prevent production failure due to missing redundancy in the flue gas clean up, Novartis required an additional system. During different production processes exhaust air load with organic components is formed. This air is collected and delivered to a thermal vapour treatment (TVT). ...
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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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Transformer oil purification
Why degas transformer oil? Maybe the first question should be, “why is it important to have purified oil in a transformer?” Dissolved gasses in transformer oil can cause arcing, corona discharges, and overheating--reducing the electrical efficiency and lifetime of the transformer. Likewise, water contamination at levels as low as 30 ppm (parts per million) can adversely affect the ...
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Characterisation of power quality disturbances based on wavelet transforms
This paper presents a new technique for detecting and characterising disturbances in power systems based on wavelet transforms. The voltage signal under investigation is often corrupted by noises, therefore the voltage signal is first denoised using wavelet thresholding and then wavelet transform is applied to the denoised signal. Using the first-level detail wavelet coefficients, the voltage ...
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