ELECTROMAGNETIC TRANSIENT ANALYSIS METHOD AND DEVICE FOR SWITCHING CIRCUIT

摘要

Provided are an electromagnetic transient analysis method and device for a switching circuit. The analysis method comprises: constructing a state equation of a switching circuit; modifying the state equation upon occurrence of a change in a circuit topology due to a switch action; reinitializing potentials of respective nodes of the switching circuit following the switch action; solving the state equation of the switching circuit; and performing, according to state variables at respective time points obtained by means of calculation, transient analysis on the switching circuit. The analysis device comprises an equation construction module, an adjustment module, an initialization module, a switching circuit solution calculation module, and a switching circuit transient analysis module. The above method and device eliminate the difficulty of constructing state equations by general circuit networks, such that a state equation method can be applied in electromagnetic transient analysis on a large-scale circuit network. The invention can construct a state equation easily, has a shorter calculation time, and is suitable to be realized by means of computer programming.