Winding force-adjustable test transformer

Abstract

The invention discloses a winding force-adjustable test transformer. The winding force-adjustable test transformer comprises a transformer body, a compaction device, a piezoelectric sensor set, a vibration sensor and a processor, wherein the piezoelectric sensor set comprises a first piezoelectric sensor and a second piezoelectric sensor, integral and partial compaction force of a transformer winding can be adjusted through the compaction device, the first piezoelectric sensor is used for monitoring a compaction force of a coil and axial electric power borne by the winding during a test, the second piezoelectric sensor is used for monitoring radial contraction force of the coil in real time, and the vibration sensor is used for monitoring vibration of the transformer in actual operation. The winding force-adjustable test transformer is advantaged in that the structure is simple, force of the winding can be flexibly adjusted, the structure is safe and reliable, winding loosing, fault short circuit and force of the transformer winding during vibration in actual operation can be actually simulated, and the winding force-adjustable test transformer can be applied to transformer design check, fault simulation, test monitoring and science research fields.

Description

technical field [0001] The invention relates to the technical field of high-voltage testing, in particular to a testing transformer with adjustable winding stress. Background technique [0002] The transformer is the core equipment of the power grid, which plays the role of voltage conversion, power transmission and isolation protection. Therefore, the health of the transformer is related to the safety and stability of the entire power grid. When the transformer is running in a steady state or in a transient state, the windings of the transformer will be affected by electromotive force, which will cause the transformer to vibrate intensified, the structure to loosen, and the performance to decline. In severe cases, it may cause winding deformation, insulation damage or even burning accidents. [0003] When designing a transformer, the designer will perform simulation calculations on the force of the transformer winding to ensure that the transformer winding can withstand a c...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a test transformer with adjustable winding force, so as to solve the problem that the current transformer winding force cannot be directly monitored and adjusted, and internal defects cannot be truly reflected.

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