Published by Mariusz DRABECKI, Eugeniusz TOCZYŁOWSKI,Warsaw University of Technology, Institute of Control and Computation Engineering Abstract. In this paper we analyse a power dispatch method for obtaining feasible power flows, both active and reactive power, in terms of satisfying the transmission, voltage level and voltage angles’ constraints, under assumption that supply of electric power isContinue reading “Obtaining Feasibility of Power Flows in the Deregulated Electricity Market Environment”
Category Archives: Case Studies
Global Trends of Photovoltaic Energy Usage
Published by Lucjan KURZAK, Building Construction Faculty Czestochowa University of Technology, Poland Abstract. The market of photovoltaics is one of the most dynamically developing sectors of world economy. From the standpoint of the environment, the energy of solar radiation is the most attractive source. Both new materials and technological solutions, growing effectiveness of conversion ofContinue reading “Global Trends of Photovoltaic Energy Usage”
Voltage withstand Tests and PD Measurements on Cable Accessories with Assembly Mistakes
Published by Maciej OWSIŃSKI1, Paweł KLUGE1, Andrzej ŁASICA2, Przemysław SUL2, Tomasz SALAK2, Bartosz ZAJĄC2, Institute of Power Engineering (1), Warsaw University of Technology (2) Abstract. The paper presents the results of voltage withstand tests and partial discharges measurements made on MV cable accessories made with assembly errors. The tested equipment was subjected to tests developedContinue reading “Voltage withstand Tests and PD Measurements on Cable Accessories with Assembly Mistakes”
Anomalous Leakage Currents on Silicone Rubber Hollow Insulators
Published by Krystian Leonard CHRZAN1, Maciej ZIPP2,Wrocław University of Science and Technology (1), Gates Corporation (2) Abstract. Leakage currents on silicone and porcelain housings were measured at a 110 kV substation (site pollution severity class heavy) for 7 months. Both types of housing had a similar geometry. The current on porcelain housings is usually upContinue reading “Anomalous Leakage Currents on Silicone Rubber Hollow Insulators”
Investigation of Power Saving Modes in 10/0.4 kV Distribution Networks
Published by Oleksandr MIROSHNYK1, Andrzej SZAFRANIEC2, Kharkiv Petro Vasylenko National Technical University of Agriculture (1), Kazimierz Pulaski University of Technology and Humanities in Radom, Faculty of Transport, Electrical Engineering and Computer Science (2) Abstract. Operation modes of 0.4/0.23 kV power supply systems are modelled using Monte Carlo method by means of Electronics Workbench software and statisticalContinue reading “Investigation of Power Saving Modes in 10/0.4 kV Distribution Networks”
Understanding HVDC/FACTS Controller’s Sustainable Development & Comparative Analyses of GTO, GCT, IGBT, MTO, ETO, MCT and MOSFET Operations
Published by Badr Mesned Alshammari1, Tariq Masood2, Muhammad Tajammal Chughtai1, Samer Karim3, University of Hail, Hail, Saudi Arabia (1), Dukhan Operations, Qatar Petroleum (2), Maintenance Department QAFAC (3) Abstract. This article presents a comparative study through analyses regarding a number of power electronics devices. Power Electronic devices have innovative contribution to control the electrical powerContinue reading “Understanding HVDC/FACTS Controller’s Sustainable Development & Comparative Analyses of GTO, GCT, IGBT, MTO, ETO, MCT and MOSFET Operations”
ADALINE Harmonics Extraction Algorithm applied to a Shunt Active Power Filter based on an Adaptive Fuzzy Hysteresis Current Control and a Fuzzy DC Voltage Controller
Published by Noureddine KHENFAR, Abdelhafid SEMMAH, Mohamed KADEM, Djillali Liabes University of Sidi Bel Abbes, Algeria. Abstract. This paper deals with the use of an adaptive linear (ADALINE) neural network in a harmonic extraction algorithm based on the calculation of instantaneous active and reactive powers. This technique, called “ANN-PQ”, is developed in order to achieveContinue reading “ADALINE Harmonics Extraction Algorithm applied to a Shunt Active Power Filter based on an Adaptive Fuzzy Hysteresis Current Control and a Fuzzy DC Voltage Controller”
Start-up of PM Synchronous Motors
Published by Stanisław GAWRON, Jakub BERNATT, Artur POLAK,Sieć Badawcza Łukasiewicz – Instytut Napędów i Maszyn Elektrycznych KOMEL Abstract. Three variants of starting synchronous motors are presented. In simplest solution, cage winding is placed in rotor, asynchronous start-up is obtained. This method generates large surge currents adversely affecting power grid and motor (impact forces/impact torque areContinue reading “Start-up of PM Synchronous Motors”
Detection of Fault Events in Medium Voltage Grid Based on Analysis of Data from Fault Recorders
Published by Dariusz SAJEWICZ1, Augustyn WÓJCIK2, Piotr ZEGADLO3,Bialystok University of Technology (1), Warsaw University of Technology (2), Kozminski University (3)ORCID: 1.0000-0002-3488-5674; 2.0000-0003-0597-1634; 3.0000-0002-0219-297X Abstract. The aim of this paper is to demonstrate the effectiveness of newly developed fault detection methods based on a simple statistical approach encompassing linear discriminant analysis and signal processing. Fault predictionContinue reading “Detection of Fault Events in Medium Voltage Grid Based on Analysis of Data from Fault Recorders”
Applications of Supercapacitor Systems in Photovoltaic Installations
Published by Szymon ROGOWSKI1, Maciej SIBIŃSKI2, Karol GARLIKOWSKI3, Katedra Przyrządów Półprzewodnikowych i Optoelektronicznych, Politechnika Łódzka, ORCID. 1. 0000‐0002‐1279‐3592, 2. 0000‐0002‐9752‐3400 Abstract. The following article presents results of measurements and parameter comparison of energy bank based on supercapacitor batteries and a typical lead-acid solution designed for PV microinstallation. For the purposes of the research, basic measurementsContinue reading “Applications of Supercapacitor Systems in Photovoltaic Installations”
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