Mitigating Spikes for EMC in Vibration Monitoring Systems of Generating Plant

Abstract Indonesia islands are situated in equatorial region with relative high density of thunderbolt rate. As developing country Indonesia builds many generating plants. During lightning stroke, some spikes occurred in turbine-generator vibration monitoring systems. Electromagnetic compatibility (EMC) problem was happened in the systems. This paper proposes mitigation technique to overcome spikes in vibration monitoring systems of a generating plant. The spikes displayed in the monitoring system were evaluated and will be mitigated. A filtering system is one of alternative solutions to cope this problem. Ferrite ring component which is a part of filtering system was recommended to put before load (the monitoring system). The result of Pspice simulation showed that the combination of ferrite ring and shunt capacitor to form L-C LPF can suppress the amplitude of the spikes effectively.

[1]  S. Nitta,et al.  Prediction of noise reduction effect of ferrite beads on electromagnetic emission from a digital PCB , 1998, 1998 IEEE EMC Symposium. International Symposium on Electromagnetic Compatibility. Symposium Record (Cat. No.98CH36253).

[2]  Henry W. Ott,et al.  Noise Reduction Techniques in Electronic Systems , 1976 .

[3]  Технология.  Springer Science+Business Media , 2013 .

[4]  D. Hamdani,et al.  EMC-based skin-effect grounding for reliable lightning protection system of antenna system , 2011, Proceedings of the 2011 International Conference on Electrical Engineering and Informatics.

[5]  W. Prasad Kodali,et al.  Engineering Electromagnetic Compatibility , 2001 .

[6]  F. Grassi,et al.  Modeling SMT ferrite beads for SPICE simulation , 2011, 2011 IEEE International Symposium on Electromagnetic Compatibility.

[7]  Michiel Steyaert,et al.  EMC of Analog Integrated Circuits , 2009 .

[8]  D. Darwanto,et al.  EMC based lightning protection systems for instrumentation systems of geothermal power plant , 2012, 2012 Asia-Pacific Symposium on Electromagnetic Compatibility.

[9]  Jianmin Zhang,et al.  Ferrite bead model extraction and its application in high-performance ASIC analog power filtering , 2011, 2011 IEEE International Symposium on Electromagnetic Compatibility.