Electrical Engineering Wroclaw University of Technology

Electrical Engineering Wroclaw University of Technology 14 records found  Search took 0.02 seconds. 
1. Analysis of SDFT based phase detection system for grid synchronization of distributed generation systems / Chitti Babu, B ; Sridharan, K ; Rosolowski, E ; Leonowicz, Z [http://dx.doi.org/10.1016/j.jestch.2014.07.005] [ENY-PREPRINT-2014-015]
A fast and exact detection of phase and fundamental frequency of grid voltage/current is essential for calculating accurate reference signal in order to implement the control algorithm of inverter-interfaced distributed generation (DG) system and realize precise harmonic compensation. [...]
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2. Piorunochrony pseudoaktywne / Bazelyan, E M ; Chrzan, K L [ENY-ARTICLE-2012-340]
Opisano własności podstawowych form wyładowań elektrycznych w powietrzu: strimera i lidera. [...]
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3. Hygroscopic Properties of Pollutants on HV Insulators / Chrzan, K L ; Pohl, Z ; Kowalak, T [I07/1988/P-337] [ENY-ARTICLE-2008-212]
The mechanism of moisture absorption by an insulator surface contaminated with different salts was described. [...]
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4. Probes for spot measurement of surface conductivity on polluted insulators / Chrzan, K L ; Farzaneh, M [I07/2006/I-016] [ENY-ARTICLE-2008-207]
The surface conductivity of insulators in the field is usually very non-uniformly distributed. [...]
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5. Correction of Current Transformer Transient Performance / Wiszniewski, A ; Rebizant, W ; Schiel, L [ENY-ARTICLE-2008-202]
If a current transformer (CT) saturates while transforming the heavy primary current, in each period, there are sections when the magnetic core is unsaturated and transformation is correct, and when it is saturated, it causes enormous errors. [...]
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6. New Criteria of Voltage Stability Margin for the Purpose of Load Shedding / Wiszniewski, A [ENY-ARTICLE-2008-201]
Voltage instability is a phenomenon which often contributes to the development of power system disturbances. [...]
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7. Switching Vacuum Arc in a Pulsed Transverse Magnetic Field / Klajn, A [ENY-ARTICLE-2008-195]
An experimental analysis of the vacuum arc behavior in a pulsed transverse magnetic field with amplitudes up to 120 mT and frequency of 900 Hz is presented in the paper. [...]
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8. Fuzzy Logic Application to Out-Of-Step Protection of Generators / Rebizant, W ; Feser, K [I08/2001/I-110] [ENY-ARTICLE-2008-163]
Efficient protection scheme against out-of-step (OS) conditions based on fuzzy logic (FL) technique is presented. [...]
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9. Efficient Frequency-Adaptive Amplitude Tracking Algorithms for Protection Purposes / Rebizant, W ; Rusek, B [I08/2003/I-091] [ENY-ARTICLE-2008-159]
The new, fast and adaptive algorithms for measurement of signal amplitude for protection and control purposes are presented. [...]
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10. Asynchronous Generator Behavior After a Sudden Load Rejection / Rebizant, W ; Terzija, V [I08/2003/I-092] [ENY-ARTICLE-2008-158]
In the paper load rejection test, performed at a hydro power plant in Sweden, equipped with asynchronous generators, is described and analysed from the electromechanical transient processes and signal distortions points of view. [...]
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11. ANN-based Detection of OS Conditions in Power System / Rebizant, W [I08/2000/I-133] [ENY-ARTICLE-2008-152]
In the paper a new neural network based out-of-step protection scheme is presented. [...]
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12. Real-time Implementation of Adaptive Amplitude Estimators for Protection and Control Purposes. / Rebizant, W ; Staszewski, J ; Lee, S J ; Kang, S H [I08/2003/I-067] [ENY-ARTICLE-2008-151]
In the paper a new fast and adaptive scheme for measurement of signal amplitude for protection and control purposes is presented. [...]
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13. Wavelet Transform Approach to High Impedance Fault Detection in MV Networks / Michalik, M ; Rebizant, W ; Lukowicz, M ; Lee, S J ; et al [ENY-ARTICLE-2008-145]
Application of wavelet transform technique to high impedance arcing fault detection in distribution networks is presented. [...]
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14. Optimal Sizing of Fixed Capacitor Banks Placed on a Distorted Interconnected Distribution Networks by Genetic Algorithms / Galal Sayed, A ; Hosam K M, Y [ENY-ARTICLE-2008-138]
In this paper, the optimal sizing of fixed capacitor banks problem in a distorted interconnected distribution system is formulated and solved by a Genetic Algorithm (GA) solution technique to minimize the cost of power production and capacitor banks under the constraints include voltage limits , sizes of installed capacitors and Total Harmonic Distortion (THD), the algorithm is applied on IEEE 30-bus test system and the results are given for different cases: Light and heavy harmonic cases. [...]
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