Transformer Vibration Monitoring and Calibration Platform Based on DDS

Abstract

The invention discloses a DDS (Direct Digital Synthesizer)-based transformer vibration monitoring and checking platform, comprising a standard source module, a sensor, a data acquisition module and an upper computer control and data processing module. The output ends of the standard source module and the sensor are connected with the data acquisition module; the output end of the data acquisition module is connected with the upper computer control and data processing module; the output end of the upper computer control and data processing module is connected with the standard source module which comprises a DDS and a signal amplifier circuit; the DDS comprises a phase accumulator, a waveform memory, a digital-to-analogue converter and a low-pass filter. The DDS-based transformer vibration monitoring and checking platform judges whether the vibration monitoring of the transformer is effective by checking vibration signals of the vibration sensor, and has the advantages of simple and reliable structure, easy realization and strong expandability.

Description

technical field [0001] The invention relates to a transformer vibration monitoring and verification platform based on DDS. Background technique [0002] With the rapid development of the power industry, the scale of the power grid continues to expand, and the safe operation of the power grid is becoming more and more important. As one of the most important equipment in the power system, the safe operation of the transformer is very important. By monitoring the vibration of the transformer, the internal faults of the transformer can be found in time, and repaired in time to avoid major damage caused by transformer accidents. [0003] It can be known from the theoretical knowledge of transformers that the vibration of the core and winding inside the transformer is based on twice the power supply frequency, so the amplitude of the vibration signal at twice the frequency can be measured to monitor the vibration of the transformer. However, during the long-term operation of the...

AI Technical Summary

Problems solved by technology

At present, there is a lack of monitoring and verification of transformer vibration, so it is a technical problem to make up for this defect

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