Abstract: To address the problems of traditional mal-operation prevention systems under the centralized control mode of Changqing Oilfield power grid, such as the lack of cross-substation interlocking, insufficient real-time performance of remote operations, and failure of mal-operation prevention under parallel multi-tasks, this study proposed and constructed a full-domain collaborative mal-operation prevention management system based on a three-layer architecture of "Control Center – Centralized Control Station – Substation". Employing the IEC 104 protocol, bidirectional interaction of remote signal and remote control between the dispatching system and the mal-operation prevention platform was realized, breaking the technical bottleneck of interlocking for remote operations. Practical applications demonstrated that the centralized mal-operation prevention system greatly improved the efficiency of switching operations and fault handling and significantly reduced mal-operation risks. This system provides technical support for the centralized and safe operation of the oilfield power grid.

Key words: oilfield power grid, centralized control management, anti-misoperation interlocking