Design of Liquid Level and Generator Temperature Display System for EDG in Nuclear Power Station

At present, EDG used in nuclear power plants is relatively old. The main means of EDG condition monitoring is the on-site dashboard installed in the EDG factory, which shows the relevant thermal parameters of operation. The instrumentation equipped in the factory can only display the current value of the liquid level of the diesel engine and the temperature of the stator coil of the generator. It cannot view the historical data and has no function of data storage and transmission. At present, manual recording is carried out by means of periodic inspection, which cannot fully reflect the operation status of diesel engine, capture transient process and time series change process, and evaluate the health value of equipment. Moreover, the existing monitoring methods cannot detect abnormal conditions in advance before the serious failure of EDG. In this paper, the modification of the existing on-site instrument of EDG is discussed, and the intelligent display function of on-site liquid level and generator coil temperature is added, so that the device can be applied to the complex EDG working site. (paper)