POWER SYSTEM FULL DYNAMIC SIMULATION PART II:FAULT SIMULATIONS

Fault simulation is one of the main constituents of power system dynamic simulation. In power system full dynamic simulation software the admittance matrixes of faulty branches are adopted in the fault models to simulate arbitrary symmetrical and unsymmetrical faults, by use of contraction technique for admittance matrix the multi-faults and the randomly occurred faults can be processed. The feature of this method is that the arbitrary multi-fault occurred in a branch can be simulated without any additional branches or buses to be added, thereby, the calculation efficiency and the expedience of usage are improved.