The D6000 centralized control system frequently generates false alarms during cross-station correlated operations

stemming from the inherent limitations of its single-station logic. Taking a false alarm event caused by a 35 kV Backup Automatic Transfer (BZT) cold load transfer operation as an example

this paper analyzes the defects of event-based alarm logic in non-fault automatic switching scenarios. The study finds that

due to the lack of identification of source side operation behavior

the signal combination generated by the BZT action

namely "switch position change

general accident signal

and protection trip"

satisfies the conventional accident criteria

leading to system misjudgment. To address this problem

this paper proposes introducing the nature of source side operations as a blocking condition and constructing cross station topological correlation constraints to resolve such false alarms

thereby providing a reference for wide area logic optimization in centralized control systems.