The invention relates to a detection platform for an independent wave energy and tidal current energy power generation system. The detection platform is equipment being 380V/500kW, and comprises a power quality monitoring module, a load regulation module and a short-circuit simulation module. The wave energy and tidal current energy power generation system is connected with the load regulation module for carrying out a load experiment, or is connected with the short-circuit simulation module for carrying out a short-circuit experiment; the power quality monitoring module comprises a back-end computer, a controller and an on-line power quality monitor which are arranged in a monitoring cabinet, so that the operations of performing human-machine exchange, detecting data, transmitting a load regulation command, transmitting a short-circuit simulation command and monitoring the power quality can be finished; different combinations of load branches of the load regulation module are regulated, so that the stepped load regulation is realized, and dynamic characteristics of inverter output are detected according to load change; the short-circuit simulation module is a short-circuit cabinet, and can simulate various faults of single-phase grounding, inter-phase short circuit, symmetrical short-circuit and asymmetric short circuit. The detection platform can independently finish a set of test item and has the characteristics of high portability, high accuracy and high real-time property.