In wind power generation systems, there are strict requirements on the voltage, relative angle, frequency and other parameters of grid-connected power generation. Power parameters such as current, power and power quality are of great significance for evaluating and controlling power generation quality. The EDA9133 has these features and can be easily applied to wind power systems. The circuit is installed in the control cabinet of the wind power system, and connects the phase sequence of the three-phase voltage and current of A, B and C to the power distribution control cabinet, connects the working power supply, and connects the data port to the corresponding controller. Data can be collected and transmitted later. Suizhou simi intelligent technology development co., LTD , https://www.msmvape.com