detecting internal FAUlTS IN A TRANSFORMER WINDING
Presented by
RAKHI.M.S
EE
College Of Engineering, Trivandrum
2007-11 batch



CONTENTS
Objectives
Introduction
Causes and Effects
Existing methods
Ratiometer method
Advantages and Limitations
Conclusion
Reference

OBJECTIVES

To detect the internal faults in a transformer winding
Detection of faults to take corrective measures to prevent interruption during operations
To improve the life expectancy of the transf ....etc

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Abstract-Power system engineers are currently facing challenges to increase the power transfer capabilities of existing transmission system. This is where the Flexible AC Transmission Systems (FACTS) technology comes into effect. With relatively low investment, compared to new transmission or generation facilities, the FACTS technology allows the industries to better utilize the existing transmission and generation reserves, while enhancing the power system performance. Moreover, the current trend of deregulated electricity m ....etc

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to get information about the topic induction motor simulink modelling full report ppt and related topic refer the page link bellow

http://seminarsprojects.net/Thread-modelling-of-the-three-phase-induction-motor-using-simulink ....etc

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K. L. Shi, T. F. Chan and Y. K. Wong

Abstract
This paper describes a generalid simulation model of the three-phase induction motor using the SIMULIMC software package of MATLAB. The model is based on two-axis theory of revolving frame transformation. The model takes power source and load torque as inputs and gives speed and electromagnetic torque as outputs. Internal resistance of the power supply and magnetic saturation of the motor may also be accounted for.

for more:
http://docs.googleviewer?a=v&q=cache:ehi ....etc

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matlab simulink OF dtc-svm five phases induction motor

ABSTRACT:This paper proposes design and simulation of a direct torque controlled induction motor drive system based on space vector modulation technique for ripple reduction.Direct Torque Control is a control technique used in AC drive systems to obtain high performance torque control. The principle is based on simultaneously decoupling the stator flux and electromagnetic torque. DTC drives utilizing hysteresis comparators suffer from high torque ripple and variable switching frequency.The ....etc

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ABSTRACT

This paper describes in detail, field experiments performed on a single-phase, distribution transformer to study the behavior of transformer terminal parameters during internal winding faults. A custom-built transformer provided with external taps was used for these tests. The taps were used to stage various internal winding faults in the transformer. Terminal values of voltages and currents were monitored and the results presented. A comparison of these results with simulation results is also presented


Presented By:
Palme ....etc

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Hi,
visit this thread for an abstract:
http://seminarsprojects.net/Thread-modelling-of-transformers-with-internal-incipient-faults--6385

for pdf, follow the page link in this thread:
http://seminarsprojects.net/Thread-modelling-of-transformers-with-internal-incipent-faults-full-report ....etc

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Internal winding faults resulting from the degradation of transformer winding insulation can be catastrophic and hence expensive. In the new environment of deregulation, utilities therefore are needing inexpensive methods employed to detect such faults in the incipient stage.

The development of an accurate internal fault diagnostic technique for transformers must be based on analysis of quantities from faults scenarios.

Considering the safety of personal, the damage that will occur in the transformer, the consumed time, and related c ....etc

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Modeling Transformers With Internal Incipient Faults
The Incipient fault detection in transformers can provide
early warning of electrical failure and could prevent catastrophic
losses. a transformer model to simulate internal incipient faults is described here. deteriorating insulation
models with an internal short circuit fault model are combined here for developing the fault model. based on the physical behavior of aging insulation and the arcing
phenomena an aging
model and an arcing model was combined in parallel.

INTER ....etc

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i need ppt on modeling transformers with internal incipient faults ....etc

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