power transformers
Failure Analysis of Power Transformers
... quantity power transformers are counted and ...quantity power transformers with fault and referenced to some relative classification methods, the fault pattern for power transformer is ...
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TRANSINFORMER – An Integrated System for Health Monitoring of Power Transformers
... Power transformers are at the heart of electrical transmission and distribution systems, and as competition increases within the energy sector, so does the pressure on transformer manufacturing industry to ...
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CONDITION MONITORING AND ASSESSMENT OF POWER TRANSFORMERS FOR RELIABILITY ENHANCEMENT A REVIEW
... In this paper an attempt has been made to understand the diagnostic techniques commonly used in power transformers. With regular monitoring and diagnosis it is possible to extend the life of a transformer. ...
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Performance Evaluation of ANFIS algorithm for Diagnosis of Faults in Power Transformers
... Power transformers are vital devices in a transmission and distribution ...system. Power transformers fault free operation is a factor of major cost-effective significance and safety in ...
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A Novel ANFIS based Algorithm for Fault Detection in Power Transformers
... Power Transformers are important parts of the power distribution network, used to change voltages level for transmission between sub stations and electricity ...consumers. Power ...
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Studies On Insulation Oil Contaminants In Electrical Power Transformers
... For The insulation structure of power transformers consists of oil and cellulose, whose dielectric properties are strongly influenced by moisture, temperature and aging. Their condition can therefore, be ...
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A New Approach to Assessment and Utilisation of Distribution Power Transformers
... all power transformers have a very high efficiency - the largest power transformers are arguably the most efficient machines devised by humankind - amount of energy power ...
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A Novel Flux-Based Protection Scheme for Power Transformers
... [8] Cabanas, M.F., Melero, M.G., Pedrayes, F., Rojas, C.H., and Orcajo, G.A., “A New Online Method Based on Leakage Flux Analysis for the Early Detection and Location of Insulating Failures in Power ...
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Development of Indicators for Technical Condition Indexing of Power Transformers
... on power transformers in Latvian transmission ...the power system in Latvia where power transformers are aged and variations in oil volumes are ...
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End of life modelling for power transformers in aged power system networks
... Power transformer ageing is one of the critical issues utilities are facing, since a large number of units are approaching or have exceeded their designed lifetime. A good end-of-life model is required to optimize ...
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Ontology-based fault diagnosis for power transformers
... Electrical insulation plays an important role in many high voltage power ap- paratuses, especially power transformers. Partial discharge (PD) occurs when the local electric field exceeds a threshold ...
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Incipient Failure Detection in Power Transformers through Frequency Sweep Response
... in power transformers can be accomplished throughout a number of different routine tests such as: low tension TTR, power factor and excitation ...a power autotransformer tap changer, where the ...
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Intelligent diagnosis of defects responsible for partial discharge activity detected in power transformers
... Abstract -- This paper describes the application of cluster analysis and classification techniques for the diagnosis of partial discharge defects present in electrical power transformers. The subsequent ...
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Reducing sizes of control power transformers and power supplies with Eaton s XT IEC motor control
... This application note explains how control power transformers and power supplies are sized. Coil consumption tables for Eaton XT and competitive lines are provided in Tables 7 and Table 8. A CPT/ ...
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Advanced winding models and ontology-based fault diagnosis for power transformers
... In this chapter, multi-conductor transmission line model (MTLM) is in- troduced and used for the simulation of partial discharge. MTLM is one model for transformer winding [36]. In MTLM, each turn of the winding is ...
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Aging Effect on Characteristics of Oil Impregnated Insulation Paper for Power Transformers
... This paper deals with experimental investigations of the electrical and physical properties of oil impregnated insulation paper for power transformers at different temperatures. The ac breakdown voltage, ...
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Alternative Approaches for Distinguishing between Faults and Inrush Current in Power Transformers
... In this study, we will cover the basic methods used to distinguish between inrush current and fault current in power transformers. First, the nature of inrush current is presented compared to the fault ...
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A Hybrid Neuro Genetic Approach for Analyzing Dissolved Gases in Power Transformers
... The Dissolved Gas Analysis is a diagnostic and maintenance tool used in machinery. Through this method, gases are studied to give an early indication of transformer abnormal behavior. For the last 20 years, this method ...
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Influence of the Parameters of Disk Winding on the Impulse Voltage Distribution in Power Transformers
... in power transformers based on equivalent instantaneous inductance technique coupled with finite element method”, Iranian Journal of Electrical & Electronic Engineering, ...
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DWT ANN Based Analysis of Inrush and Fault Currents in Power Transformers
... Power transformers are important elements of power ...of power transformer and block due to inrush ...of transformers are based on harmonic content of differential ...
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