In order to improve the quality of PLC products and improve the efficiency of product system testing,we designed and developed a highly integrated simulation testing platform tailored to the specific operating environments of wind turbines,achieving automated testing of PLC products.The simulation testing platform can simulate various sensor signals on equipment such as generators,oil pumps,and gearboxes,and supports the provision of various types of communication data including that from frequency converters and pitch controllers.The simulation platform is committed to replacing traditional testing tools and fully covering all testing items of the fan controller.This testing system can maintain long-term operation,simulate the actual high load operating environment of PLC on-site,and verify the stability of PLC in complex environments.Products tested with this simulation platform will be more stable and reliable.