Abstract: With the improvement of power quality requirements, the demand for network access detection is becoming increasingly urgent. Most of the existing detection platforms only have a single test function, because comprehensive performance testing is not a simple integration of these single test functions, and new devices are required in the integration process, resulting in high hardware costs. At the same time, there is a lack of perfect and unified communication standards, a lack of interaction and reuse among relevant systems, a lack of effective management and utilization of massive monitoring data, and an inability to support friendly interaction with power users. In order to solve the above problems, a dynamic power quality detection device is developed, which mainly includes high-voltage line simulator, low-voltage line simulator, energy feedback type electronic load, coupled with safe power supply and distribution interlock logic control and online data acquisition analysis monitoring system. The detection device has been successfully applied in power grid, providing a large number of reliable experimental data, and greatly reducing the power loss of the power grid.