A power system harmful event sequential revelation model with similarity to the sandpile model

In order to offer a basal technique measure for the research on blackout and self-organized criticality,a power system harmful event sequential revelation model with similarity to the sandpile model is established.Two sorts of harmful events often arise in power system,one is accident break or cascading break,another is voltage instability or voltage collapse.In the power system harmful event sequential revelation model with similarity to the sandpile model,the load demand increases continuously,this is corresponding to that the particles of sand drop continuously in the sandpile model.Departing from the beginning state in the model on the condition of continuous growth in load demand,different harmful events show theirself in turn to open out the course of crisis evolution.