Multifunctional portable partial discharge online detecting instrument for power distribution device

Abstract

The invention discloses a multifunctional portable partial discharge online detecting instrument for a power distribution device. The multifunctional portable partial discharge online detecting instrument comprises external sensor and internal sensors for collecting partial discharge signals, a signal sampling and conditioning circuit for conducting frequency reduction, filtering and amplificationon the data collected by the external sensor and internal sensors, an ADC used for conducting A / D conversion on the signals output by the signal sampling and conditioning circuit into digital signals, an embedded ZYNQ used for conducting high-speed parallel data processing on the signals output by the ADC and controlling partial discharge storage and communication device accessing, a communication interface connected with an embedded ZYNQ core board to be used for communication device accessing, an information storage device connected with the embedded ZYNQ to be used for storing signals andan external device for displaying, outputting and user control inputting. The multifunctional portable partial discharge online detecting instrument satisfies the requirements for reliability and practicability of detection techniques.

Description

technical field [0001] The invention relates to the field of partial discharge on-line detection, in particular to a multifunctional portable partial discharge on-line detection instrument for power distribution equipment. Background technique [0002] In recent years, the scale of my country's power grid has continued to expand, and power distribution equipment such as transformers, high-voltage switchgear, and power cables have been widely used, and their working status is directly related to the overall reliability of the power grid. At present, in my country's fault detection methods for power distribution equipment, traditional offline detection still occupies a certain proportion, but this method requires equipment shutdown, cumbersome operation procedures, and unnecessary economic losses. On-line detection of equipment operating status without affecting the normal operation of equipment can overcome the shortcomings of offline methods, and is being widely researched a...

AI Technical Summary

Problems solved by technology

There are many deficiencies in existing partial discharge detection equipment: small detection instruments can only implement a single detection method, simply detect the intensity of partial discharge signals, and cannot extract in-depth and specific features of the signal; large detection equipment is bulky , often need to be used across platforms, the operation is difficult, and it is not conducive to promotion

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