Online self-monitoring system for electronic transformer measurement circuit

Abstract

The invention provides an online self-monitoring system for an electronic transformer measurement circuit, which comprises a monitored circuit. The input end of the monitored circuit is electrically connected with a transfer switch; the transfer switch is switched between a waveform generator and a primary sensing unit according to a regular switching signal sent by the monitored circuit CPU; when the transfer switch is switched to the waveform generator, the monitored circuit is in a monitored state, and measurement data are outputted; when the transfer switch is switched to the primary sensing unit, the monitored circuit is in a normal working state, the output end of the monitored circuit is electrically connected with a merging unit comprising a self-monitoring module; the self-monitoring module judges the operation state of the monitored circuit according to the measurement data outputted by the monitored circuit; and the waveform generator generates a standard signal according to the control signal sent by the CPU. Non-stopping power regular automatic monitoring can be realized and the state information is given.

Description

technical field [0001] The invention relates to the field of electric power monitoring, in particular to an online self-monitoring system for an electronic transformer measuring circuit. Background technique [0002] With the continuous improvement of power system capacity and voltage level, the difficulty of insulation of traditional electromagnetic transformers is increasing, and the cost of insulation is also increasing. It is large in size and heavy in weight, and it is difficult to adapt to the development of smart grids. The new type of electronic transformer uses optical fiber as the signal transmission medium. It has simple insulation structure and excellent performance. The trend of globalization development has developed rapidly in recent years and is already in the stage of practical development. [0003] A large number of electronic devices are used in the electronic transformer circuit, and the circuit is mostly outdoors, and the ambient temperature, humidity, ...

AI Technical Summary

Problems solved by technology

When the voltage level is high, the volume and weight of the electromagnetic transformer equipment are not conducive to on-site operation, the workload is heavy, and the detection cost is high

In the actual operation process, the electronic transformer circuit is often the main cause of failure or out-of-tolerance

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