Method for constructing and solving operation domain model of flexible direct-current traction power supply system

The invention discloses a method for constructing and solving an operation domain model of a flexible direct-current traction power supply system. The method mainly comprises the following steps: establishing a working point vector, establishing equality constraints of the flexible direct-current traction power supply system, and establishing inequality constraints of the flexible direct-current traction power supply system; according to the working point vector and equality constraints and inequality constraints of the flexible direct-current traction power supply system, constructing an operation domain model of the flexible direct-current traction power supply system; according to the method, the domain theory of a power system is expanded to the flexible direct-current traction power supply system for the first time, and compared with an existing operation domain model, the model constructed by the method considers the space-time change characteristics of traction loads and can be suitable for safety anal