FLUID-FILLED ELECTRICAL EQUIPMENT INTELLIGENT ANALYSIS SYSTEM AND METHOD

摘要

An intelligent analysis apparatus (10) and method for fluid (F) filled electrical equipment (20) includes sensors (28a-e) for measuring various parameters of the electrical equipment (20). Analytical model (112, 114, 116)s calculate parameters based on measurements of other parameters. The measured and calculated parameters are compared and the result of the comparison is used as an indicator in a causal network. The probabilities of the causal network are recalculated by a belief network. The analytical model (112, 114, 116)s are adjusted over time to account for acceptable changes in behavior of the equipment over time. The output of the causal network can be used for diagnostic and prognostic indication.