The Study Of Transformer's DC Resistance Rapid Measurement

Transformer's DC resistance measurement is one of the primary item before transformer leaving factory and precautionary test. The inherent time constant of transformer is quite long, so it is very important to study how to shorten the measuring time. In this dissertation the primary principle of transformer's DC resistance measurement and all kinds of rapid measuring methods is studied, emulated and analyzed by simulink, their advantage and disadvantage is analyzed and their on-site applicability is compared. Then one feasible measuring method is brought forward and the aim to rapidly measure transformer's DC resistance is implemented through system design using singlechip. Wang Liang(electric power system automatization) Directed by prof. Liang Zhirui...