The Research On Dispatching Operating Command Expert System Of Power Network Based On Object-oriented Petri Net

Dispatching operating command expert system is an important part of expert system application in power system.Petri-net technique has been used in operating command expert system to reflect the whole structure of rule base and make inference not depending rule.But when Petri-net is used in the modling and analysis of the large scale power network,the problem of combination explosion may be encourtered, therefore the application range of Petri-net is restricted.Here,the algorithm basing on the object-oriented Petri-net technique is built to divide the power network operation task into a series of sequencial subtasks, then Petri-net is used in the analysis of the subtasks.Therefore,the dimensionality of the Petri-net model for large scale power system is decreased and the problem of combination explosion.Based on the analysis the object partitioning,structure packaging,information transmission among the objects and graphic modeling are given,so the system security can be ensured by the designed structure of objects and the relation among the objects.The concrete scheme is illustrated by means of calculation example,the results of the example show that the proposed approach is effective.Finally,the paper introduces the function and realization of this system,and the method is verified based Dingxi local distribution network..