Conducting power grid tests on aircraft to obtain the power of the aircraft power grid and realizing full-load loading of the aircraft power supply load through simulated electrical loads according to the power situation is a common method and means in the airworthiness verification of large passenger aircraft in power and power plant categories. Active power distribution technology combines automation, communication, and digitalization with aircraft power distribution. It monitors the status of the aircraft power grid and multiple power loads through sensors and voltage measurements. Based on the operating status of the aircraft power supply and power grid, the control algorithm is optimized to control the loading and unloading of the aircraft loads, thereby improving the safety, reliability, and intelligence of the aircraft power system. The focus of this paper is how to achieve dynamic and real-time measurement and perception of the power of the aircraft power grid and effectively and accurately connect the simulated loads according to the power consumption of the power grid to maintain the full-load output state of the aircraft generator. This paper also describes the method for verifying the algorithm and indicates the application of this technology in demonstrating compliance with airworthiness requirements for large passenger aircraft.