Mitigating Spikes for EMC in Vibration Monitoring Systems of Generating Plant

摘要

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.