Network power supply security conflict detecting method and device

The invention relates to network power supply security conflict detecting method and device. The method comprises the following steps of: acquiring a blackout plan as well as topological information of main and distribution network equipment; acquiring a substation set and a distribution network bus set corresponding to blackout equipment according to blackout equipment information in the blackout plan and the topological information of the equipment; confirming power supply paths of each substation and each distribution network bus according to the substation set and the distribution network bus set; and judging whether the blackout plan generates security conflicts according to the power supply paths. The method and the device can provide precheck for the security of the blackout plan made by power network workers/decision makers/plan reviewers, and avoid execution of the blackout plan with the security conflicts so as to improve the security of the made blackout plan.