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This paper studies the method of fault diagnosis in HVCB (high voltage circuit breaker), and discusses application of D-S (Dempster-Shafer) evidence theory in the HVCB's faults. D-S evidence theory is discussed the problem of the validity, and out of work in the cases, a theory of evidence and the improved method were provided to resolve the D-S algorithm in realizing the conflict problem of the evidence...
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