Published by Ji SHENGCHANG, Zhu LINGYU, Li YANMING, State Key Laboratory of Electrical Insulation and Power Equipment, Department of electric engineering, Xi′an Jiaotong University Abstract. Vibration signal analysis method is one of effective methods to monitor the condition of transformer windings and core. In this paper, the multi-channels vibration measurement system is set up andContinue reading “Study on Transformer Tank Vibration Characteristics in the Field and its Application”
Category Archives: Case Studies
Testing of LV Switchgear for Powering Cellulose Fiber Breaking Systems
Published by Adam SMOLARCZYK1, Tadeusz DASZCZYŃSKI1, Sławomir FISZER2Warsaw University of Technology, Electrical Power Engineering Institute (1), Elektroteam Sp. z o.o. (2) Abstract. The article describes an innovative low voltage switchgear for use in the pulp and paper industry. The switchgear is an innovative structure designed to supply single-phase systems with significant currents above 1 kA.Continue reading “Testing of LV Switchgear for Powering Cellulose Fiber Breaking Systems”
Harmonic Measurement Data Evaluation
Published by Electrotek Concepts, Inc., PQSoft Case Study: Harmonic Measurement Data Evaluation, Document ID: PQS1001, Date: March 15, 2010. Abstract: Utility power system harmonic problems can often be solved using a comprehensive approach including site surveys, harmonic measurements, and computer simulations. This case study presents a harmonic data analysis for a utility 12.47kV substation monitoring locationContinue reading “Harmonic Measurement Data Evaluation”
A Short Review of Energy-Efficient Line-Start Motor Design
Published by Tine MARČIČ1, TECES, Research and Development Centre for Electric Machines (1) Abstract. The paper provides an overview of design problems and contemporary research progress in the currently very interesting field of energy-efficient line-start motors. Discussed are problems related to induction motors (IMs), line-start synchronous reluctance motors and line-start interior permanent magnet synchronous motorsContinue reading “A Short Review of Energy-Efficient Line-Start Motor Design”
New Approach to Protecting Transformers Against High Frequency Transients – Wind Turbine Case Study
Published by Dariusz SMUGAŁA(1), Wojciech PIASECKI(1), Magdalena OSTROGÓRSKA(1), Marek FLORKOWSKI(1), Marek FULCZYK(2), Ole GRANHAUG(3), ABB Sp.z.o.o., Corporate Research Center, Cracow, Poland (1), ABB Oy, Medium Voltage Products, Vaasa, Finland (2), ABB AS, Medium Voltage Products, Skien, Norway (3) Abstract. Novel protection method of wind turbine transformers against high frequency transients occurring during switchgear operation isContinue reading “New Approach to Protecting Transformers Against High Frequency Transients – Wind Turbine Case Study”
Harmonic Current Cancellation Evaluation
Published by Electrotek Concepts, Inc., PQSoft Case Study: Harmonic Current Cancellation Evaluation, Document ID: PQS1002, Date: March 15, 2010. Abstract: Utility power system harmonic problems can often be solved using a comprehensive approach including site surveys, harmonic measurements, and computer simulations. This case study presents the results for a customer step-down transformer harmonic current cancellation evaluation.Continue reading “Harmonic Current Cancellation Evaluation”
Impact of SMES Unit on DC-Link Voltage of DFIG during Various Types and Level of Faults
Published by A. M. Shiddiq YUNUS1, Makmur SAINI1, Ahmed Abu-SIADA2, Mohammad A.S. MASOUM3, State Polytechnic of Ujung Pandang (1), IndonesiaCurtin University (2), AustraliaUtah Valley University(3), USA Abstract. Wind energy becomes a popular source for renewable energy based power plants since a recent decade ago. Within many types of wind turbine generator (WTG), Doubly Fed InductionContinue reading “Impact of SMES Unit on DC-Link Voltage of DFIG during Various Types and Level of Faults”
Experimental Solar-Based Charging Station for Electric Vehicles
Published by Désiré D. RASOLOMAMPIONONA2, François MAEGHT1, Pierre-Yves CRESSON1,Patrick FAVIER1, I.U.T. de Béthune, Université d’Artois (1), Institute of Electric Power Engineering, Warsaw University of Technology (2) Abstract. For a few years the need of research completion on renewable energy allows the installation of several student projects at the University. A group of co-operating foreign studentsContinue reading “Experimental Solar-Based Charging Station for Electric Vehicles”
Some Aspects of the Growing Penetration of Wind Energy in the Polish Power System
Published by Tadeusz SKOCZKOWSKI1, Maksymilian KOCHAŃSKI1,2, Warsaw University of Technology (1), Research and Innovation Centre Pro-Akademia (2) Abstract. According to the Energy Policy of Poland by 2030 the national power system will have to acquire 12 times more electricity from wind energy than in 2011. This challenging policy goal entails a number of significant consequences.Continue reading “Some Aspects of the Growing Penetration of Wind Energy in the Polish Power System”
General Reference – Modeling for Harmonic Analysis
Published by Electrotek Concepts, Inc., PQSoft Case Study: General Reference – Modeling for Harmonic Analysis, Document ID: PQS0303, Date: January 10, 2003. Abstract: Harmonics have existed on electric power systems for many years. Recently, however, much more attention has been given to monitoring and analyzing the presence and effects of harmonics on utility and customer devicesContinue reading “General Reference – Modeling for Harmonic Analysis”
Power Quality Blog 