Abstract:With the guidance of national energy conservation and environmental protection policies, more and more generating units are used to generate electricity from COG. The domestic mainstream generating units are Solar gas turbines. However, the operating experience of Solar Turbines is still being explored. The actual operation of the Solar T130 unit, summed up the problem of FN_Ngp_ Under_Speed (gas turbine underspeed shutdown) in the start of the Solar T130 gas turbine, and carried out inspection and analysis of each relevant system, and proposed a solution. The fault is finally found to be caused by the low calorific value of the ignition diesel. The following analysis process can provide a reference for handling the same type of fault.