Offshore wind turbine generator fault detection system

The utility model discloses an offshore wind turbine generator fault detection system, comprising a fault simulation platform and a fault detection system, the fault detection system is connected with the fault simulation platform, and the fault simulation platform carries out analogue simulation on an offshore wind turbine generator based on a control mode and a control signal of the offshore wind turbine generator. Simulation operation data is obtained; the fault detection system comprises a data sensor and a fault diagnosis device, the data sensor is arranged on a generator of the offshore wind turbine generator, the fault diagnosis device is connected with the data sensor, the data sensor collects operation data of the generator, and the fault diagnosis device outputs a fault diagnosis result. According to the utility model, real-time fault detection can be carried out on the generator without installing a state monitoring device on the generator, so that the cost is reduced, the fault condition of the ge