Published by Unipower AB, Metallgatan 4C, 44132 Alingsås, Sweden. Email: info@unipower.se PQ Secure – Power Quality Management System The quality of your power is extremely important as disturbances or short outages can cause major problems for your equipment and systems. We have created a Power Quality Management System that will assist you in monitoring your systemContinue reading “PQ Secure”
Tag Archives: Safety/Protection
Unipower – About Power Quality
Published by Unipower AB, Metallgatan 4C, 44132 Alingsås, Sweden. Email: info@unipower.se Power quality is a generic term for disturbance-free electricity supply. Deviation from voltage sinusoidal waveform (50 Hz), which may result in equipment being disturbed or damaged, is to be regarded as a power quality disturbance. This means that the more sensitive equipment you connect toContinue reading “Unipower – About Power Quality”
Analysis of Seasonality and Causes of Equipment and Facility Failures in Electric Power Distribution Networks
Published by Andrzej Ł. CHOJNACKI, Kielce University of Technology, Department of Power Engineering ORCID: 0000-0002-9227-7538 Abstract. The article presents the results of analyses concerning the seasonality and causes of damage to equipment and facilities operated in 110kV, MV and LV power distribution networks. These facilities include 110kV overhead lines, 110kV/SN substations, MV overhead and cableContinue reading “Analysis of Seasonality and Causes of Equipment and Facility Failures in Electric Power Distribution Networks”
Harmonic Information Management System
Published by 1. Johan ADOLFSSON, Director, Unipower AB, ja@unipower.se, 2. Peter ANDERSSON, CEO, Unipower AB, psa@unipower.se, 3. Nilesh CHINTALWAR, GM, PCI Ltd, nilesh@prime-pci.in, 4. Shital SHAH, PCI Ltd, shitalshah@prime-pci.in INTRODUCTION In the vast majority of countries today there are regulations and standards implemented that specify the maximum level of harmonic content. Some countries implement theContinue reading “Harmonic Information Management System”
Transient Detection using Peak Detectors
Published by Jonny Carlsson, Unipower AB, http://www.unipower.se Background The main problem with transients in the electrical network is that a high voltage potential might break the isolation barrier in for example cables or other equipment in the electrical network. It may also harm semiconductors that are sensitive of high voltage. A transient voltage is byContinue reading “Transient Detection using Peak Detectors”
Dynamic Voltage Restorer for Voltage Unbalance Mitigation and Voltage Profile Improvement in Distribution Network
Publishd by Ahmed A. Abdullah AL-KARAKCHI1, Enaam ALBANNA2, Alya H. AL-RIFAIE3, Northern Technical University (1,2,3) ORCID: 1. 0000-0003-1151-3015; 2. 0000-0002-3974-0116; 3. 0000-0002-7978-2193 Abstract. Unbalanced network voltage damages utility and end-user equipment. Electrified trains, single-phase distributed generators, and line-toline connected industrial loads can increase voltage imbalances. Using Dynamic Voltage Restorer (DVR) at appropriate places is oneContinue reading “Dynamic Voltage Restorer for Voltage Unbalance Mitigation and Voltage Profile Improvement in Distribution Network”
Extra High Voltage Transmission Line Lightening Protection using Surge Arrester
Published by Ali HAMOODI, Rasha MOHAMMED, Bashar SALIH, Northern Technical University, Engineering technical college Abstract. The objective of this work was to protect the transmission line (T.L.) from the lightning effect. In the last decades, several methodologies have been employed for the rise of lightning performance on the T.L Lightning with high values of currentContinue reading “Extra High Voltage Transmission Line Lightening Protection using Surge Arrester”
Impact of Ambient Temperature on the Failure Intensity of Overhead MV Power Lines
Published by Andrzej Ł. Chojnacki, Kielce University of Technology, Department of Power EngineeringORCID: 0000-0002-9227-7538 Abstract. The article presents the influence of weather conditions, represented by the ambient temperature, for the intensity of the failure of MV overhead power lines. It presents the mechanisms of damaging the equipment by the high and low temperatures. It showsContinue reading “Impact of Ambient Temperature on the Failure Intensity of Overhead MV Power Lines”
Improving the Operation Characteristics of Non-Insulated Overhead Power Lines
Published by 1. Oleksandr KOZLOVSKYI1, 2. Dmitro TRUSHAKOV1, 3. Oleksandr SAVCHENKO2, 4. Serhiy RENDZINYAK3, 5. Vasyl KORUD3, Central Ukrainian National Technical University (1), Kharkiv Petro Vasylenko National Technical University of Agriculture (2), Lviv Polytechnic National University (3)ORCID: 1.0000-0001-6885-5994; 2.0000-0003-0326-2383, 3.0000-0002-6401-0852, 4.0000-0003-4544-4871, 5.0000-0002-1289-3534 Abstract. Methods of protection of wires of overhead power lines of group “anti-icing”Continue reading “Improving the Operation Characteristics of Non-Insulated Overhead Power Lines”
Test Stand for Testing and Diagnostics of Medium Voltage Vacuum Interrupters
Published by Paweł WĘGIEREK, Michał LECH, Lublin University of Technology, Faculty of Electrical Engineering and Computer Science Abstract. The article presents the detailed construction and capabilities of a research station for the diagnosis and testing of vacuum interrupters used in medium voltage electrical switching devices. The correct functioning of the stand has been confirmed byContinue reading “Test Stand for Testing and Diagnostics of Medium Voltage Vacuum Interrupters”
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