Troubleshooting methods for transformer line faults

Abstract

The invention discloses an elimination method for hidden dangers in transformer line fault. The method comprises the following steps of firstly acquiring the current at the input terminal and the output terminal of a transformer in real time; secondly, if the current at the input terminal is smaller than a fault determination initiating current, and the current at the output terminal is greater or equal to the fault determination initiating current at any time in a set period, then retrieving recorded sound information acquired inside the transformer in the set period; If the recorded sound information includes cracking or buzzing during the time period when the current at the output terminal is greater or equal to the fault determination initiating current, it indicates that there exists a fault of short circuits among the lines in the transformer system. If the current at the input terminal is smaller than the fault determination initiating current and the current at the output terminal stays to be zero at any time in a set period, it indicates that there exists a fault of break circuits among the lines in the transformer system. The third step of the method is updating the check results of the lines of the transformer system and the geological position of the transformer to the control center of the power grid.

Description

technical field [0001] The invention relates to a transformer fault troubleshooting technology, in particular to a method for eliminating hidden dangers of transformer circuit faults. Background technique [0002] Transformer is a device that uses the principle of electromagnetic induction to change AC voltage. The main components are primary coil, secondary coil and iron core (magnetic core). The main functions are: voltage transformation, current transformation, impedance transformation, isolation, voltage stabilization (magnetic saturation transformer), etc., which are widely used in power systems, throughout urban and rural areas, and play a vital role in the power grid. Once the transformer appears If there is a fault, the area where it is located and the power grid downstream will be in a paralyzed state. Therefore, when the transformer is working, it is necessary to check its circuit status at all times. At present, for transformers, there is basically no method for ...

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Problems solved by technology

The main functions are: voltage transformation, current transformation, impedance transformation, isolation, voltage stabilization (magnetic saturation transformer), etc., which are widely used in power systems, throughout urban and rural areas, and play a vital role in the power grid. Once the transformer appears If there is a fault, the area where it is located and the power grid downstream will be in a paralyzed state. Therefore, when the transformer is working, it is necessary to check its circuit status at all times. At present, for transformers, there is basically no method that can effectively troubleshoot its faults and find out the cause of the fault.

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