General Identification Method of Equipment Operation Mode

In the verification of anti-mis-operation rules for substations, it is necessary to judge the operation mode of equipment (operation, hot-standby, cold-standby and maintenance). The traditional method is to establish a large bay template library, which is difficult to maintain knowledge and enumerate all states. Therefore, a general judgment method for equipment operation mode is proposed. This paper divides the power grid equipment into core equipment and switching equipment, establishes the equipment connection model described by "core equipment – end – switch bay", formulates the division principle of switch bay, analyzes the operation mode layer by layer according to the sequence of switch bay – some end of core equipment – core equipment as a whole, forms the general description of equipment operation mode, and designs the judgment flow with switch interval as the minimum search unit. Through three examples of judging the operation mode of three core equipment: line, main transformer and bus, this paper shows the process of division of bay and judgment of equipment operation mode under the condition of one and a half circuit breakers connection, double-bus with auxiliary bus connection, internal-bridge connection, polygonal bus connection, sectionalized single-bus connection and double-bus connection, and verifies the feasibility of this method. Compared with the traditional method, without the bay template library, it can be applied to various main wiring forms and various core equipment, judge various operation states, and is conducive to real-time application.