Published by Dranetz Technologies, Inc., Case Study A busy trading floor was experiencing difficulties with their six air handling units, which were fed from a single 480V, 400-amp service. The units were malfunctioning, stalling and at times were unable to start, causing the temperature in the control room to rise to unacceptable levels. A Dranetz Power PlatformContinue reading “Overloaded Service”
Tag Archives: Current
Comparison of Compact Fluorescent to Incandescent Bulbs
Published by Dranetz Technologies, Inc., Case Study With the proliferation of Compact Florescent (CF) lighting, we thought it would be interesting to do a side by side comparison to an incandescent bulb using our new Energy Platform EP1. Not only is it a great demonstration of the capabilities of the EP1 but it’s also an opportunity toContinue reading “Comparison of Compact Fluorescent to Incandescent Bulbs”
Fiber Optic Technology for Pressure Measurements in High Voltage Switchgear
Published by 1. Damian KOSTYŁA1, 2. Paweł WĘGIEREK1, 3. Michał LECH1,Lublin University of Technology, Faculty of Electrical Engineering and Computer Science (1)ORCID: 1. 0000-0002-9012-0158; 2. 0000-0002-0812-3414; 3. 0000-0002-4732-2459 Abstract. The paper presents a review of traditional and fiber optic methods dedicated to pressure measurement in the context of ongoing research work on the development ofContinue reading “Fiber Optic Technology for Pressure Measurements in High Voltage Switchgear”
Diagnostics of Electric Drive Electric Vehicle with Valve Motor
Published by 1. Yurii Borodenko 1, 2. Shchasiana Arhun 1,2, 3. Andrii Hnatov 1, 4. Nadezhda Kunicina 2, Martins Bisenieks 2, 6. Vasiliy Migal 3, 7. Hanna Hnatova 1,2 , Department of Vehicle Electronics, Kharkiv National Automobile and Highway University, Khrakiv, Ukraine; docentmaster@gmail.com (Yu.B.); shasyana@gmail.com (Shch.A); kalifus76@gmail.com (A.H.); annagnatova22@gmail.com (H.H.) (1) Riga Technical University, FacultyContinue reading “Diagnostics of Electric Drive Electric Vehicle with Valve Motor”
Power Consumption Control and Monitor using IoT Platform for Smart Office
Published by 1. Sahapong SOMWONG1, 2. Kritsada PUANGSUWAN2,Faculty of Engineering, Rajamangala University of Technology Srivijaya Songkhla, Thailand (1),Faculty of Science and Industrial Technology, Prince of Songkla University, Surat Thani Campus, Surat Thani, Thailand (2) ORCID: (1) 0000-0002-2693-494X; (2) 0000-0003-1613-0611 Abstract. This paper reports the study to design and develop a system for controlling and displayingContinue reading “Power Consumption Control and Monitor using IoT Platform for Smart Office”
High impedance Fault Detection in Low Voltage Overhead Distribution based Wavelet and Harmonic Indices
Published by Enaam ALBANNA1, Alya H. AL-RIFAIE2, Ahmed A. Abdullah AL-KARAKCHI3, Northern Technical University (1,2,3) ORCID: 1. 0000-0002-3974-0116; 2. 0000-0002-7978-2193; 3. 0000-0003-1151-3015; Abstract. High-impedance fault HIF occurs when an energized conductor makes contact with a surface with a high impedance. Conventional overcurrent protection cannot detect this fault due to the low fault current, and thereContinue reading “High impedance Fault Detection in Low Voltage Overhead Distribution based Wavelet and Harmonic Indices”
Analysis of Switching Overvoltages and Protection from Atmospheric Overvoltages for 400kV Switchgears in the Kosovo Power System using ATP/EMTP
Published by 1. Bahri PREBREZA, 2. Nuri BERISHA1*, 3. Bashkim STATOVCI, Faculty of Electrical and Computer Engineering, University of PrishtinaORCID: 1. 0000-0003-1950-026X; 2. 0000-0001-8615-637X; 3. 0000-0002-6840-0778 Abstract. Power systems might experience electrical problems or power outages, due to atmospheric discharges. The quality of the protection from atmospheric overvoltages will increase the life of the equipmentContinue reading “Analysis of Switching Overvoltages and Protection from Atmospheric Overvoltages for 400kV Switchgears in the Kosovo Power System using ATP/EMTP”
Ultra–Fast Charging of Electric Bus Fleet and its Impact on Power Quality Parameters
Published by 1. Aleksander CHUDY, 2. Paweł A. MAZUREK, Lublin University of Technology ORCID: 1. 0000-0002-3183-8450, 2. 0000-0002-7098-2084 Abstract. The research focused on one–week long measurement of power quality parameters at the connection point of a 450 kW charging station (pantograph type) in the distribution substation. The bus terminal was equipped with 1200 kVA 15.75/0.42Continue reading “Ultra–Fast Charging of Electric Bus Fleet and its Impact on Power Quality Parameters”
Container Harbour in Gothenburg
Published by Jonny Carlsson, Unipower AB, Case Study: Container Harbour in Gothenburg, Date: November 8th, 2010. http://www.unipower.se The most important problem was the sags that were caused by the container cranes. The cranes created a lot of high reactive power during the start of the lift procedure. The high currents caused high demand on the transformerContinue reading “Container Harbour in Gothenburg”
New Technology for PQ Measurements using Auto-Calibration on Capacitive Tap on Inductive Current Transformer
Published by Jonny CARLSSON – Unipower AB, David HOLMBERG – AB Vattenfall, Jan ÖSTLUND – ABB AB Abstract A method of real-time calibrating the voltage signal from the Capacitive Tap on an ABB Current Transformer using Unipowers ‘UP-2210R/ABB Capacitive tap Module’ has produced accurate results of unbalance, harmonics and transients with no limitation in bandwidth.Continue reading “New Technology for PQ Measurements using Auto-Calibration on Capacitive Tap on Inductive Current Transformer”
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