Published by Jacek F. GIERAS, University of Technology and Life Sciences, Bydgoszcz Abstract. The paper discusses the electric power system of the Tu-154M aircraft. After brief introduction to aircraft power systems, the results of reverse design and analysis of the GT40PCh6 wound-field synchronous generator including short circuit have been presented. Electric power distribution and assignmentContinue reading “Electric Power System of Tu-154M Passenger Aircraft”
Category Archives: Case Studies
The Influence of Selected Biomedical Research Equipment in the Aspect of Higher Harmonics Generating
Published by Anna KOZIOROWSKA1,2, Dariusz SOBCZYŃSKI3, Wiesława MALSKA3 Uniwersytet Rzeszowski, Wydział Matematyczno – Przyrodniczy, Instytut Techniki (1)Uniwersytet Rzeszowski, Centrum Biotechnologii Stosowanej i Nauk Podstawowych (2)Politechnika Rzeszowska, Wydział Elektrotechniki i Informatyki, Katedra Energoelektroniki i Elektroenergetyki (3) Abstract: Specialized biomedical laboratory equipment, very often use power converters, which are a source of higher harmonics. These devices dependingContinue reading “The Influence of Selected Biomedical Research Equipment in the Aspect of Higher Harmonics Generating”
Overvoltage Assessment of Point-to-Point VSC-Based HVDC Systems
Published by Jose A. JARDINI1, Ricardo L. VASQUEZ-ARNEZ2, Marcos T. BASSINI1, Marco A.B. HORITA1, Gerson Y. SAIKI2 and Marcos R. CAVALHEIRO3 Polytechnic School of the University of Sao Paulo (1), Foundation for the Technological Development of the Engineering Sciences (2), CTEEP Sao Paulo State Power Transmission Company (3). Abstract. The application of voltage source convertersContinue reading “Overvoltage Assessment of Point-to-Point VSC-Based HVDC Systems”
Current-Carrying Capacity Parallel Single-Core LV Cable
Published by Lech BOROWIK1, Artur CYWIŃSKI2Politechnika Częstochowska, Wydział Elektryczny (1), Pracownia Projektowa omega-projekt (2) Abstract. The paper presents the problems related to the selection of parallel single-core low voltage cables in terms of their current carrying capacity and accordance with PN-IEC 60364-5-523 national standard, exemplified by electric power transmission from transformer MV/LV 1600kVA, with proximityContinue reading “Current-Carrying Capacity Parallel Single-Core LV Cable”
The Measurement of Input Power of Power Supply in Network Disturbed by Low Frequency Distortions
Published by Stanisław GALLA, Arkadiusz SZEWCZYK,Gdansk University of Technology Faculty of Electronics, Telecommunications and Informatics Abstract. In the paper authors present results of observation of input power changes versus harmonics amplitude in supply voltage of low-power power supply device. In the study, the electrical measurements supported with thermal imaging were used. The input circuit elementsContinue reading “The Measurement of Input Power of Power Supply in Network Disturbed by Low Frequency Distortions”
Thermal Problems in HTS Transformer due to Inrush Current
Published by Grzegorz KOMARZYNIEC1, Tadeusz JANOWSKI2, Grzegorz WOJTASIEWICZ2, Michał MAJKA2, Politechnika Lubelska, Instytut Podstaw Elektrotechniki i Elektrotechnologii (1), Instytut Elektrotechniki w Warszawie (2) Abstract. With switching on a superconducting transformer to the energetic network, a unidirectional current of high amplitude may appear. Maximal values of the current impulses following shortly one after the other mayContinue reading “Thermal Problems in HTS Transformer due to Inrush Current”
Method of Selecting the Most Important Power Lines in a Transmission and Distribution Network
Published by Dalibor VALEK, Radomir SCUREK, Technical University of Ostrava, Faculty of Safety Engineering Abstract: This article describes the method used to graph theory in security analysis. For the pursposes of this study, an environment is referred to here as a network of power lines and devices and a power grid is considered as aContinue reading “Method of Selecting the Most Important Power Lines in a Transmission and Distribution Network”
Stator Earth Fault in 200MW Generator – A Case Study
Published by Mr. V.Veerapandi, Sr.Manager(ser)/SAS, Email:vpandi@bhelpswr.co.in Introduction One of 200 MW old machine was experienced stator earth fault and the unit was tripped when the load was around 154 MW. The stator earth fault was attended on emergency basis and the unit was brought back with minimum possible time. This article covers observations, analysis ofContinue reading “Stator Earth Fault in 200MW Generator – A Case Study”
Transmission System Harmonics Study
Published by Electrotek Concepts, Inc., PQSoft Case Study: Transmission System Harmonics Study, Document ID: PQS0501, Date: March 31, 2005. Abstract: A utility presently operates two 16.8 MVAr capacitor banks in a 161/69kV substation. Supplied by this substation are residential, commercial, and industrial loads, including a steel manufacturing facility. For increased voltage support, the utility is investigatingContinue reading “Transmission System Harmonics Study”
Case Study on Fault Analysis Using PMU
Published by Prithwish Mukhopadhyay, General Manager, prithwish.mukhopadhyay@posoco.in,Rajkumar Anumasula, Senior Engineer, rajkumar@posoco.in, Abhimanyu Gartia, Deputy General Manager, agartia@posoco.in, Chandan Kumar, Engineer, chandan.wrldc@posoco.in, Pushpa Seshadri, Chief Manager, pushpa_seshadri@posoco.in, Sunil Patil, Engineer, skpatil@posoco.in , WRLDC, Mumbai, India Abstract — Synchrophasors are used extensively in Indian Grid to detect and analyze faults occurring in the system. This paper majorlyContinue reading “Case Study on Fault Analysis Using PMU”
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