Electronic power switch interpolation real-time emulation method

The invention discloses a kind of electronic power switch interpolation real-time emulation method based on the trapezoidal weight integration method of backward Euler, including step：The moment is turned off in electronic power switch, the correct time point and relevant state variables of switch motion are determined using linear interpolation；According to the time point of switch motion when the position in step simulation step length, using after ODE to the trapezoidal weight integration method structural segmentation function of Euler, integration obtains the numerical solution of system synchronizing simulation time point, system is reinitialized each amount in this course, so as to obtain the moment correct network topology and system initial value.Electronic power switch frequent movement causes system topological high frequency to change and then influences the conventional difficulties of electromagnetic transient simulation efficiency in effectively solution electromagnetic transient in power system emulation of the invention.