Transformer evaluation

摘要

An illustrative method of evaluating a condition of a plurality of transformers that are located remotely from each other, includes: obtaining an ambient temperature for respective sites of the transformers at a plurality of times during a period; determining respective loading at the transformers at the plurality of times; and determining respective aging rates of the transformers during the period based on the respective ambient temperatures and loadings.

主权项

1. A method of evaluating a condition of a plurality of transformers that are located remotely from each other, the method comprising the steps of:
obtaining an ambient temperature for respective sites of the transformers at a plurality of times during a period; determining the ambient temperatures based on an estimated ambient temperature for the respective sites of the transformers including estimating the ambient temperature by
clustering the sites into a plurality of clusters,determining a centroid for each cluster,associating each centroid with a measurement station, andestimating the ambient temperature at each of the sites based on a temperature at the measurement station associated with the centroid of the cluster including the transformer site; determining respective loading at the transformers at the plurality of times; and determining respective aging rates of the transformers during the period based on the respective ambient temperatures and loadings.