Petri nets and mobile agent composed fault unit lock scheme

When the power system happened with the protection information lost or the incorrect operation, at present it still depends on the backup protection to isolate the fault with prolonged time and the extended tripped area. In this paper use the Petri nets as the synthetically analysis on the protection information tool and the mobile agent the distributional intelligence tool, finds a better solution to the above problem. The substation level central system carries on the integration process to both the distributional protection information and dynamic information along with the protection acting process, and then it dispatch the mobile agents to carry on the task download and logic calculation to the correlation distributed nodes. In case of the need for further information initiation, it activate the sequence trip to carry on the fault area dynamic lock, finally complete the fault isolation based on the smallest unit.