Analysis of Faults on High Voltage Direct Current HVDC Transmissions System

Published by Alya Hamid AL-RIFAIE1, Sanabel Muhson ALHAJ ZBER2, Noha Abed-AL-Bary AL-JAWADY3, Ahmed A. Abdullah AL-KARAKCHI4, Northern Technical University, Iraq. ORCID: 1. 0000-0002-7978-2193; 2. 0000-0003-0232-9064; 3. 0000-0002-0275-2527; 4. 0000-0003-1151-3015 Abstract. High Voltage Direct Current (HVDC) Transmission with Voltage Source Converters (VSC) is gaining substantial interest from several utilities for various applications as compared to traditionalContinue reading “Analysis of Faults on High Voltage Direct Current HVDC Transmissions System”

The Influence of Radiators Construction on Vibroacoustic Measurement of a Power Transformer

Published by Szymon BANASZAK1, Eugeniusz KORNATOWSKI2, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie, Katedra Elektrotechnologii i Diagnostyki (1), Zachodniopomorski Uniwersytet Technologiczny w Szczecinie, Katedra Przetwarzania Sygnałów i Inżynierii Multimedialnej (2) Abstract. The paper presents an example of transformer tested with complementary tests methods: Frequency Response Analysis and Vibroacoustic Measurement. Methods applied together allow for higher quality ofContinue reading “The Influence of Radiators Construction on Vibroacoustic Measurement of a Power Transformer”

Polish Hydropower Resources and Example of their Utilization

Published by Józef PASKA, Karol PAWLAK, Pola RONKIEWICZ, Paweł TERLIKOWSKI and Jan WOJCIECHOWSKI*Warsaw University of Technology, Institute of Electrical Power Engineering, Poland Abstract: This paper presents the analysis of Polish rivers’ potential to be employed in the construction of new electricity sources. On the basis of the hydrological data obtained in a number of years,Continue reading “Polish Hydropower Resources and Example of their Utilization”

The Effect of Cable Duct Diameter on the Ampacity of High-Voltage Power Cables

Published by Filip RATKOWSKI1,2, Michał KOŁTUN2, Stanislaw CZAPP1, Gdańsk University of Technology (1), Eltel Networks Energetyka SA (2). ORCID: 1. 0000-0002-4698-9729, 3. 0000-0002-1341-8276 Abstract. The ampacity of power cables depends, among others, on the conditions of heat dissipation from the cable to the environment. Cables are usually laid directly in the ground, but in someContinue reading “The Effect of Cable Duct Diameter on the Ampacity of High-Voltage Power Cables”

Impedance Models of Multi-Circuit Multi-Voltage Overhead Power Lines

Published by Henryk KOCOT1, Agnieszka DZIENDZIEL1,2, Silesian University of Technology, Institute of Power Engineering and Control Systems (1), PSE Innovations (2) Abstract. The paper discusses aspects related to the modeling of multi-circuit overhead power lines (HV, EHV), in particular their zero models. The article presents a mathematical model of two-voltage three-circuit overhead line in powerContinue reading “Impedance Models of Multi-Circuit Multi-Voltage Overhead Power Lines”

A New Application of Vector Based Current Regulator for STATCOM to Improve Dynamic Performance of DFIG

Published by A. M. Shiddiq YUNUS1, Ahmed Abu-SIADA2, Mohammad A.S. MASOUM3, State Polytechnic of Ujung Pandang, Indonesia (1), Curtin University, Australia (2), Utah Valley University , USA (3) Abstract. Wind turbine generator (WTG) installation has been rapidly growing globally in the last few years. In the year of 2017, the WTG installation has reached aContinue reading “A New Application of Vector Based Current Regulator for STATCOM to Improve Dynamic Performance of DFIG”

Analysis of the Influence of Unequal Current Distribution on the Heating of Parallel Connected LV MOV Surge Arresters

Published by Bartłomiej SZAFRANIAK, Paweł ZYDROŃ, and Łukasz FUŚNIK, AGH University of Science and Technology, Krakow, Poland Abstract. In low-voltage (LV) electrical networks metal-oxide varistor (MOV) surge arresters connected in parallel are often used against overvoltages. The paper presents the results of laboratory experiments, during which pairs of parallel connected MOV surge arresters were subjectedContinue reading “Analysis of the Influence of Unequal Current Distribution on the Heating of Parallel Connected LV MOV Surge Arresters”

Ferroresonance in Distribution Systems – State of the Art

Published by Mohamed M. EL-Shafhy1, Alaa M. Abdel-hamed1, Ebrahim A. Badran2,Electrical Power & Machines Department, High Institute of Engineering, El-Shorouk Academy, Cairo, Egypt (1), Electrical Engineering Department, Faculty of Engineering, Mansoura University, Mansoura, Egypt (2) Abstract. Recently, there are increasing interest in studying the ferroresonance phenomenon, due to the various problems it causes to powerContinue reading “Ferroresonance in Distribution Systems – State of the Art”

Higher Harmonics Filtration in the Power Supply System of Thyristor Hoisting Machine of Shaft Transport in a Mining Plant

Published by Marian HYLA, Silesian University of Technology, Department of Power Electronics, Electrical Drives and Robotics. ORCID: 0000-0001-6466-7398 Abstract. The paper presents the issues of the influence on the supply electrical power grid of the thyristor rectifier supplying high power receivers such as a shaft hoisting machines in mining. The current distortion influence of theContinue reading “Higher Harmonics Filtration in the Power Supply System of Thyristor Hoisting Machine of Shaft Transport in a Mining Plant”

EDP Distribuição’s Development of Support Tools and Platforms for Power Quality Management and Analysis

Published by Fabrice GONÇALVES, António LEBRE, Pedro VELOSO, Fernando BASTIÃO, Nuno MELO, DP Distribuição – Portugal. Emails: fabrice.goncalves@edp.pt, antoniojose.lebrecardoso@edp.pt, pedro.veloso@edp.pt, fernando.bastiao@edp.pt, nuno.melo@edp.pt 24th International Conference & Exhibition on Electricity Distribution (CIRED). 12-15 June 2017. ABSTRACT EDP Distribuição, as distribution system operator (DSO), has been developing an ambitious Power Quality (PQ) monitoring program. This paper aimsContinue reading “EDP Distribuição’s Development of Support Tools and Platforms for Power Quality Management and Analysis”