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[PDF] Top 20 Detection of trasformer intermittent winding faults by the on-load exciting current Park`s vector approach

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Detection of trasformer intermittent winding faults by the on-load exciting current Park`s vector approach

Detection of trasformer intermittent winding faults by the on-load exciting current Park`s vector approach

... concerning the use of the Park's Vector Approach, has demonstrated the effectiveness of this non-invasive technique for diagnosing malfunctions in operating three-phase ... See full document

11

Power transformers winding fault diagnosis by the on-load exciting current extended Park's vector approach

Power transformers winding fault diagnosis by the on-load exciting current extended Park's vector approach

... study of winding inter-turn short-circuits presents some inherent difficulties: the current in the shorted turns must be limited to the rated current of the ... See full document

17

Incipient turn-to-turn winding fault diagnosis of power transformers by the on-load exciting current Extended Park`s Vector Approach

Incipient turn-to-turn winding fault diagnosis of power transformers by the on-load exciting current Extended Park`s Vector Approach

... to the other phases, for the same type of ...consequence of the normal asymmetry of the transformer's magnetic circuit, which leads to the natural deformation ... See full document

7

Detection of Bearing Faults of Induction Motor Using Park’s Vector Approach

Detection of Bearing Faults of Induction Motor Using Park’s Vector Approach

... park’s vector approach is a relatively effective technique which has been successfully applied in the steady state diagnosis of bearing ...faults. The analysis of ... See full document

4

On-line diagnostics of transformer winding insulation failures, by Park's Vector Approach

On-line diagnostics of transformer winding insulation failures, by Park's Vector Approach

... For the same load conditions and transformer winding connections mentioned above, ...presents the experimental primary-side phase current Park's Vector patterns, for several ... See full document

7

Intermittent turn-to-turn winding faults diagnosis in power transformers by the on-load exciting current Park's Vector Approach

Intermittent turn-to-turn winding faults diagnosis in power transformers by the on-load exciting current Park's Vector Approach

... concerning the use of the Park's Vector Approach, has demonstrated the effectiveness of this non inva- sive technique for diagnosing malfunctions in operating three- ... See full document

7

Transformers on-load exciting current Park`s vector approach as a tool for winding faults diagnostics

Transformers on-load exciting current Park`s vector approach as a tool for winding faults diagnostics

... concerning the use of the Park's Vector Approach, has demonstrated the effectiveness of this non-invasive technique for diagnosing malfunctions in operating three-phase ... See full document

7

A permeance-based transformer model and its application to winding interturn arcing fault studies

A permeance-based transformer model and its application to winding interturn arcing fault studies

... investigates the behavior of power transformers under the occurrence of permanent or intermittent winding insulation ...For the study of these phenomena, a simple ... See full document

10

Eutectic solidification as explained by the thermodynamics of irreversible processes

Eutectic solidification as explained by the thermodynamics of irreversible processes

... analysis of the micro-field of solute concentration ahead of the solid / liquid interface, while -component of temperature gradient due to a model of heat balance worked ... See full document

4

Distributions of grain parameters on the surface of aircraft engine turbine blades

Distributions of grain parameters on the surface of aircraft engine turbine blades

... In the quality assurance system for components cast using the lost wax method, the object of evaluation is the grain size on the surface of the ...evaluating ... See full document

6

J. Microw. Optoelectron. Electromagn. Appl.  vol.12 número2

J. Microw. Optoelectron. Electromagn. Appl. vol.12 número2

... Since the seventies, there are several studies with the aim of substituting brushes and slip-rings by contactless energy transfer systems, like, ...where the lack of reliability ... See full document

16

Rotor Faults Detection in Induction Motor by Wavelet Analysis

Rotor Faults Detection in Induction Motor by Wavelet Analysis

... for the detection of broken rotor bar fault of induction motor based on wavelet analysis of the stator current which is useful for further online diagnosis in ... See full document

10

A coupled electromagnetic transformer model for the analysis of winding inter-turn short-circuits

A coupled electromagnetic transformer model for the analysis of winding inter-turn short-circuits

... overtaken the electric- ity supply industry during the closing decade of the 20th century have created a powerful new commercial ...markets, on an increasingly international ...items ... See full document

7

Statistical Assessment of the Effect of Chemical Composition on Mechanical Properties of Hypereutectic AlSi17CuNiMg Silumin

Statistical Assessment of the Effect of Chemical Composition on Mechanical Properties of Hypereutectic AlSi17CuNiMg Silumin

... from the following starting materials (Table 1): aluminium in grade AR1 (99,96% Al), silicon of 98,5% purity (rest Fe and other elements), copper (99, 98% Cu), nickel (99, 98% Ni) and cast AG10 alloy (about ... See full document

4

Influence of tungsten and titanium on the structure of chromium cast iron

Influence of tungsten and titanium on the structure of chromium cast iron

... analyses the as-cast state structure of chromium cast iron designed for operation under harsh impact-abrasive ...In the process of chromium iron castings manufacture, very strong influence ... See full document

4

The influence of the arc plasma treatment on the structure and microhardness C120U carbon tool steel

The influence of the arc plasma treatment on the structure and microhardness C120U carbon tool steel

... composition of this steel is presented in Table ...chosen on the basis EN ISO 4957:1999 norms to obtain a structure with a relatively high ...method. The surface of the samples ... See full document

4

Winning the Oil Lottery: The Impact of Natural Resource Extraction on Growth Tiago Cavalcanti Daniel Da Mata Frederik Toscani

Winning the Oil Lottery: The Impact of Natural Resource Extraction on Growth Tiago Cavalcanti Daniel Da Mata Frederik Toscani

... studied the effects of oil discoveries on the local development of only one ...instance, the U.S. has a more widespread ownership of resources than ...thousands of ... See full document

50

Meta-stable Solidification Created by the Detonation Method of Coating Formation

Meta-stable Solidification Created by the Detonation Method of Coating Formation

... Particles of the Fe-Al type (less than 50 m in diameter) were sprayed onto the 045 steel substrate by means of the detonation ...method. The TEM, SAED and EDX analyses ... See full document

4

A novel support vector machine-based approach for rare variant detection.

A novel support vector machine-based approach for rare variant detection.

... portion of heritability is explained by the identified loci. The ‘‘missing heritability’’ is widely believed to result from other genetic mechanisms, such as gene-gene interactions, ... See full document

9

Identification of boundary heat flux on the continuous casting surface

Identification of boundary heat flux on the continuous casting surface

... component of heat transfer corresponding to the direction of casting displacement is very small (this component constitutes about 5% of the heat conducted from the axis to ... See full document

6

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