Direct-current resistance measuring device for ultrahigh-voltage transformer

• Main Authors: ZHU CHEN, LI GUANGMAO, YANG SEN, QIAO SHENGYA, WANG JIANTAO, LIU YU
• Format: Patent
• Language: Chinese; English
• Published: 09.02.2021
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The invention discloses a direct-current resistance measuring device for an ultrahigh-voltage transformer, and relates to the technical field of transformer testing. The device comprises a measurementhost, a current acquisition unit and a processing unit, and is characterized in that the measurement host provides constant current and constant voltage for a transformer winding and a lead, and thecurrent acquisition unit acquires the lead current of the lead; and the processing unit determines the direct-current resistance according to the lead current and the constant current and the constantvoltage provided by the measurement host. In the embodiment of the invention, after the measurement host provides the constant current and the constant voltage for the transformer winding and the lead, the transformer winding and the lead can shunt the constant current, then the current acquisition unit is used for acquiring the lead current, and the resistance of the transformer winding is calculated according to the lead