Real-time health status-considered method for evaluating reliability of power transformer

• Main Authors: LI DAHU, HE YUBIN, LOU XIANSI, SUN JIANBO, GUO CHUANGXIN
• Format: Patent
• Language: Chinese; English
• Published: 19.04.2017
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The invention discloses a real-time health status-considered method for evaluating the reliability of a power transformer. The method comprises the steps of 1, determining a current moment, a final state monitoring moment, a final state transfer point, a future investigation time point, the state sojourn time of the power transformer and other initial distribution conditions; 2, generating a random number based on the receiving-rejecting sampling method, namely the state sojourn time of each state; 3, calculating the reliability and the average remaining life of a sample during the current sampling process; 4, judging whether a convergence condition is satisfied or not according to a variance coefficient; if the convergence condition is not satisfied, returning to the step 2 to continue a new sampling process; if the convergence condition is satisfied, calculating a reliability function and an average remaining life, and completing the evaluation process. Compared with existing methods, a model is provided on