AUTOMATIC DIAGNOSIS METHOD FOR SCADA OPERABILITY
Keywords:
automatic failure diagnosis, information and diagnostic features, failure detection function in the system, k-valued logic.Abstract
Automatic diagnosis method for SCADA operability in real time by changing information and diagnostic features of controlled parameters during propagation of information flows between SCADA hierarchy levels is proposed to consider in this paper. Necessary and sufficient fault detection criteria in the system, necessary and sufficient criteria of differentiation of independent and secondary failures based on SCADA functioning logic taking into account cause-effect relations between events and features of the each system hierarchy level were formed in this method.
Configuration binding diagram of the system structure elements is shown to localize the failure for the given example. The analytical dependencies were deduced to detect and localize the failure and define independent failures based on Post’s k-valued logic by using the characteristic functions of the first kind.
The use of automatic failure detection method in SCADA work allows us to develop auto recovery subsystems of system operability after reversible failures in real time.
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References
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