Under the background of high-penetration distributed generation integration

the distribution system faces multiple challenges such as limited renewable energy accommodation capacity

low operational efficiency

and insufficient fault self-healing capability. Traditional networking modes struggle to effectively address these bottlenecks. Therefore

this paper systematically proposes a flexible networking operation paradigm for AC/DC distribution systems. Firstly

this paper clarifies the connotation of flexible networking operation

characterized by dynamic topology reconfiguration

flexible operational control

and active response mechanisms

and discusses its operation scenarios and functional positioning. Secondly

this paper reveals key scientific problems in flexible networking

namely

the collaborative mechanism between DC regulation and AC network regulation

and the disturbance mechanism and safety considerations for power electronic converters during operating condition switching. On this basis

this paper systematically outlines core key technologies

including flexible networking operation technology and power electronic converter control technology supporting flexible networking. Finally

the feasibility of flexible networking is validated through typical demonstration projects

and a summary and outlook for distribution system flexible networking is provided. This paper aims to provide theoretical reference and technical supports for the construction of new software-defined power distribution system architecture.