Cable terminal ultrahigh frequency radiation characteristic simulation method and cable terminal ultrahigh frequency radiation characteristic simulation system

The invention provides a cable terminal ultrahigh frequency radiation characteristic simulation method and a cable terminal ultrahigh frequency radiation characteristic simulation system; the method comprises the following steps that: self-adaptive grid classification is carried out to a pre-constructed cable terminal model and an external space thereof; a local discharge signal source in simulation is set; more than one data collection point is set; and collection results of all data collection points are obtained after simulation within preset time, and the ultrahigh frequency radiation characteristic of a local discharge signal in a cable terminal is worked out after analysis to the collection results of all the data collection points. According to the method and the system, simulation results can be well fit with the actual needs of projects, and better economical and implementation performance are realized compared with an on-site test.