System for automatically controlling winding tension of transformer coil

Abstract

The invention relates to a system for automatically controlling winding tension of a transformer coil. The system comprises an uncoiler, a recoiler, an uncoilder rotary torque adjusting device and a recoiler rotary torque adjusting device, wherein the uncoilder rotary torque adjusting device comprises an uncoiling drum winding diameter detection component and an adjustment controller; the uncoiling drum coiling diameter detection component is used for detecting the coiling diameter variation of the uncoiling drum; the adjustment controller is used for dynamically adjusting the rotary torque of the uncoiling drum according to the coiling diameter variation, so that the current tension of a winding material wound on the uncoiling drum in the rotating process is in the error range of the preset tension value; the recoiler rotary torque adjusting device comprises a coil coiling diameter detection component and a transducer; the coil coiling diameter detection component is used for detecting the coiling diameter variation of a winding carrier; and the transducer is used for dynamically adjusting the rotary torque of the winding carrier, so that the tension of a winding material wound on the winding carrier is constant. The resistance unbalance ratio of the transformer coil can meet the related requirement of the national standard, for example, the interphase resistance unbalance ratio is less than or equal to 4 percent and the line resistance unbalance ratio is less than or equal to 2 percent.

Description

technical field [0001] The invention relates to a coil winding system, in particular to an automatic control system for winding tension of a transformer coil. Background technique [0002] The DC resistance unbalance rate of the three-phase transformer winding is an important performance parameter in the transformer test, and its size affects the voltage and current balance of the three-phase coil of the transformer. The unbalanced DC resistance of the three-phase transformer will cause circulating current between the phases or the ground of the transformer, increase the additional loss of the transformer, and even cause the asymmetric operation of the transformer, which will cause accidents. The national standard GB / T6451-1999 has clearly stipulated the deviation limit of the DC resistance unbalance rate of the transformer. If the constant tension control of the transformer coil cannot be guaranteed during the winding process, the resistance unbalance rate of the coil cann...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide an automatic control system for transformer coil winding tension, aiming at solving the problem that there is no economical and practical transformer coil with constant tension that is completely dedicated and suitable for the precision requirements of transformer coil winding in the prior art. Problems in winding tension automatic control system and other aspects

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