The invention relates to a method for recording and evaluating the
noise of a
transformer. The method for recording and evaluating the
noise of the
transformer is based on the rate of started cooling fans and comprises the steps that (1) with the due north direction as 0 degree, eight to twelve measurement points are evenly selected on the measured surface of the
transformer clockwise, and the measurement points are numbered; (2) A
sound pressure level testing is conducted on each
measurement point, and the average
sound pressure level and
A weighting sound power level are calculated; (3) the parameters of the
voltage and the current of the high-
voltage side of the transformer are collected, and the
A weighting sound power level, at the rated current, of the transformer is calculated; (4) the number of all fans of the transformer and the number of fans in operation are collected; (5) recording and evaluating are conducted according to the rate of started fans, wherein the rate of started fans can be equal to or below one fourth, ranges from one fourth to half, ranges from half to three fourths and above three fourths. According to the method for recording and evaluating the
noise of the transformer, the influence of the rate of started fans on the noise of the transformer is fully considered during noise recording and evaluating, objective and fair recording and evaluating of the noise of the transformer are achieved, the specificity and the
traceability of the measurement points are guaranteed, erroneous judgments and disputes are reduced, and
social harmony is promoted.