Transformer temperature signal time sequence analysis method

• Main Authors: XIE ZHIBIAO, WANG CHEN, MO WEIYUAN, PAN YINGSHAN, CHEN HAIXUE
• Format: Patent
• Language: Chinese; English
• Published: 31.03.2023
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; MEASURING; MEASURING QUANTITY OF HEAT; MEASURING TEMPERATURE; PHYSICS; TESTING; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR

The invention discloses a transformer temperature signal time sequence analysis method. The method comprises the following steps: firstly, obtaining a current-day temperature time sequence T1 of an oil inlet in operation of a transformer, a current-day temperature time sequence T2 of an oil outlet in operation of the transformer and a current-day temperature sequence T3 of an environment in operation of the transformer; then calculating a dynamic time bending distance D13 of the two time sequences T1 and T3, and calculating a dynamic time bending distance D23 of the two time sequences T2 and T3; forming a clustering plane according to D12 and D13 obtained on different monitoring days, performing clustering analysis, and calculating an angle phi between a straight line formed by the center of gravity of clustering and a zero point and an abscissa; and judging the hot spot position of the transformer according to the phi value. According to the method provided by the invention, the temperature data characterist