INDIVIDUALIZED SELF-MONITORING SYSTEM FOR TRANSFORMERS IN POWER MEASUREMENT INSTALLATIONS AND METHOD OF SELF-MONITORING AND DIAGNOSIS OF TRANSFORMERS IN POWER MEASUREMENT INSTALLATIONS

摘要

The present invention relates to an individualized self-monitoring system for transformers (1, 14) in a electric power measurement installation arranged in a distribution and/or transmission electric power network to measure the electric power at a power delivery point and an electric power receiving point that comprises at least a transformer (1, 14) and at least a meter of a time-integrated electrical quantity (3, 4, 13), directly coupled to one of the terminals of the transformer (1, 14), the meter (3, 4, 13) being capable of measuring and recording the electrical quantity of said terminal. The present invention also relates to a self-monitoring method and diagnosis of transformers (1, 14) in a power measurement installation arranged in a distribution and/or transmission electric power network to measure the electric power at a power delivery point and an electric power receiving point that comprises the steps of measuring values of a time- integrated electrical quantity directly in at least a winding of at least a transformer (1, 14), performing comparisons between measured values and performing a diagnosis based on the results of the comparisons.