© 2000 IEEE. Information contained in this newsletter may be copied without permission provided that the copies are not made or distributed for direct commercial advantage, and the title of the publication and its date appear. A bstract – In this article, the fundamental concept, characteristics and application potentials of coreless printed-circuit-board (PCB) transformers are described. Corel...

Recently many significant improvements have been done in traditionally power system. But still a lot of work is needed in traditional power system to mend many challenges. We propose formal method based on subnet model for smart power system. Formal method is mathematics based technique that is used to develop, specify and verify model in a systematic manner. It involve components i.e., power p...

in methods presented to calculate the voltage collapse point, the transmission system is usually the only part of the power system that is completely modeled. distribution systems are often replaced by aggregate load models because the use of the detailed model of distribution systems in voltage stability analysis not only increases the computation time, but also decreases the probability of co...

Numerical field solutions may be used to predict the magnetizing current waveform of power transformers for a giving value of sinusoidal voltage supply. This note concerns the sequence of operations necessary to estimate the magnetizing current waveform of power transformers employing a set of numerically simulated open-circuit tests.

Electromagnetic forces in power transformer windings are produced by interaction between the leakage fluxes and current passing them. Since the leakage flux distribution along the windings height is in two axial and radial directions, so the electromagnetic forces have two components, radial and axial. There is a risk that a large electromagnetic force due to the short circuit or inrush current...

In the electrical network power transformers play a key role in transmission and distribution of electrical energy. Noise emissions on power transformers will be supervised in Germany strictly according to the German Federal Immission Control Act (Bundes-Immissionsschutzgesetz) [1] and are a challenge for the utilities to fulfill the therein stated requirements. When in operation power transfor...

Sensors like current transformers and voltage transformers are used to monitor the power systems and data from these sensors are collected in appropriate computer applications to observe the state of the power system. Phasor Measurement Units (PMUs) get data from current and voltage transformers and time-stamp them thereby paving the way for wide-area monitoring of the power system. In wide-are...

Condition monitoring of power transformers improves the reliability and the safety of an electrical power network. It protects the transformers from failures, and avoids huge revenue loss to utilities and customers. The health status of transformers is decided by several influencing factors. An accurate health assessment of transformers has been a challenging task for the researchers as well as...

A Matlab/Simulink implementation of a model-based diagnoses system for power transformers based on structured residuals is presented in this work. Process models for thermal behavior and moisture diffusion in paper are observers for transformer temperatures and relative water concentration in oil respectively. An experimental setup consisting of a medium voltage distribution transformer equippe...

Power transformers are the most complex, important and critical components of the transition and distribution power systems. Insulation system is the key component of life extension, better availability and higher reliability of a transformer. In order to achieve both decreasing operational cost and reliable service conditionbased maintenance is needed. Monitoring and diagnostic methods and tec...