Build a large-scale dynamic virtual power plant with adjustable load-side resources, and configure adjustable load-side power resources such as commercial buildings, industrial parks, and information and communication facilities to improve the comprehensive operation efficiency of the system. The virtual power plant realizes dynamic update of external characteristic parameters every 5 minutes, and the parameter identification accuracy reaches 94.5%; the virtual power generation output control error is less than 10%, the unit ramp rate is greater than 10%/min, and the full-capacity power generation duration is not less than 2 hours; The adjustable power of the demonstration virtual power plant accounts for more than 15% of the regional load, and the overall operating efficiency is 4.5% higher than that of a single virtual power plant. Improve the utilization efficiency of existing power resources, save investment in power generation and transmission infrastructure; enrich power grid regulation methods, alleviate local power shortage in cities, and the dispatching capacity can reach 15% of the total regional load.