Method for quantitatively judging oil leakage of on-load tap switch by using detection additive method

• Main Authors: LIU CHANGSHUN, LI YONGQIN, HAO SHUYANG, GUAN YUNLIN, ZHU YI
• Format: Patent
• Language: Chinese; English
• Published: 17.03.2020
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING; TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR

The invention relates to a method for quantitatively judging oil leakage of an on-load tap switch by using a detection additive method. The method comprises the following steps: detecting transformeroil of the transformer body of an on-load tap-changer by using a high performance liquid chromatograph so as to ensure that the oil does not contain a 2, 6-di-tert-butylphenol antioxidant; detecting the content of the 2, 6-di-tert-butylphenol antioxidant in the insulating oil of the on-load tap switch of the on-load tap-changer by using the high performance liquid chromatograph; adding the 2, 6-di-tert-butylphenol antioxidant into the insulating oil in the on-load tap switch box on the on-load tap-changer by adopting a thermal dissolution method; and detecting the content of the 2, 6-di-tert-butylphenol antioxidant in the transformer body by using the high performance liquid chromatograph and judging the oil leakage condition and the maintenance time according to the content. The method has the advantages that the