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”
Tag Archives: Frequency
EMC for 2 to 150 kHz: A Proposal for Emission and Immunity of Equipment including Power-Line Communication
Published by Anders Larsson and Math Bollen, ELFORSK, Elforsk rapport 09:29, October 2008 Summary The frequency range from 2 to 150 kHz is not sufficiently covered in international standards. The contrast with the frequency range below 2 kHz is striking. There have traditionally been good reasons to emphasize on the lower frequency range, where theContinue reading “EMC for 2 to 150 kHz: A Proposal for Emission and Immunity of Equipment including Power-Line Communication”
A Review on Power Quality Challenges in Renewable Energy Grid Integration
Published by Sonali N. Kulkarni is a Research Scholar, Electronics & Telecommunication Engineering, Rajiv Gandhi Institute of Technology, Versova, Andheri (W), Mumbai, Maharashtra, India. Prashant Shingare is working as Director of Wind Energy, Emerson Network Power India Pvt Ltd, NITCO Business park, Wagle Industrial Estate, Thane (W), Maharashtra, India. Article published in International Journal ofContinue reading “A Review on Power Quality Challenges in Renewable Energy Grid Integration”
Power Quality Measurements in All Voltage Levels of the Utilities up to 150 kHz – Is it Possible?
Published by Roland Buerger (MBS AG), Business Development/R & D, MBS AG, Sulzbach-Laufen (Germany), Email: rbuerger@mbs-ag.com Bernhard Grasel (NEO MESSTECHNIK), Sales Manager, NEO Messtechnik, Zoebern (Austria), Email: bernhard.grasel@neo-messtechnik.com A reliable energy supply has meanwhile become an important location factor for many companies. While power failures and voltage fluctuations were among the most important parameters ofContinue reading “Power Quality Measurements in All Voltage Levels of the Utilities up to 150 kHz – Is it Possible?”
Frequency Response of Instrument Transformers in the kHz Range
Published by Dr. Kerstin Kunde, Dr.-Ing. Holger Däumling, Dipl.-Ing. Ralf Huth, Dipl.- Ing. Hans-Werner Schlierf and Dr.-Ing. Joachim Schmid As the number of non-sinusoidal sources and loads in the network continues to grow, the importance of information concerning the quality of the current and the voltage becomes ever more important. Each deviation in frequency canContinue reading “Frequency Response of Instrument Transformers in the kHz Range”
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