Discussion on outage and parallel methods of primary fan frequency conversion failure of thermal power generating units

Abstract

Large thermal power plants use primary fan frequency converters to control the speed of the primary fan, which brings considerable economic benefits to the power plant. Frequency converter faults often occur during the operation of the frequency converter, causing the primary fan frequency conversion to cut the power frequency or trip, resulting in unstable operation of the thermal power unit or reduction in output. In order to ensure that the primary wind turbine can be safely shut down due to frequency conversion failure and can operate safely in parallel after the frequency converter is inspected, this article discusses this process.