Virtual power plant dispatching boundary description method and device based on flexible operation domain

The invention discloses a virtual power plant scheduling boundary description method and device based on a flexible operation domain. A mapping relation between voltage constraint and current constraint and node injection in an injection space is constructed based on a security domain theory; then, through a non-acting constraint identification equation, preliminarily reducing partial constraints, based on an optimization model, more accurately reducing the non-acting constraints, taking the obtained acting constraints as a safety boundary of a flexible operation domain, and constructing an equivalent dimension reduction model; a collaborative optimization scheduling model of the virtual power plants and the main network based on the flexible operation domain is constructed, coordinated optimization under multiple virtual power plants is realized, and virtual power plant main bodies as many as possible participate in economic scheduling optimization of the main network. Based on the thought of coordinating sp