Online insulation monitoring device for high-low voltage equipment

Abstract

The invention discloses an online insulation monitoring device for high-low voltage equipment. The online insulation monitoring device comprises a current signal collecting module, a signal conditioning module and a microprocessor. The current signal collecting module is connected to the signal conditioning module. The input end of the microprocessor is electrically connected with an isolation conversion module and a function key. The output end of the microprocessor is electrically connected with an alarm module, a display module and a storage module. The output end of the signal conditioning module is connected to the input end of the isolation conversion module. Leakage current signals are collected through the current signal collecting module, and the detection work risk is lowered; monitoring data is displayed in real time through the display module and stored in time through the storage module, and the monitoring staff can conveniently check the monitoring data; when a leakage current value reaches an alarm threshold value, the microprocessor performs alarm prompts by controlling the alarm module, and the efficiency of finding and removing faults is improved; interaction communication is performed on the microprocessor through an upper computer, and then remote monitoring is achieved so that working efficiency can be improved.

Description

technical field [0001] The invention belongs to the field of electrical technology, in particular to an insulation on-line monitoring device for high and low voltage equipment. Background technique [0002] In recent years, with the large capacity, high voltage and complex structure of the power system, and the development of industrial and agricultural production, the requirements for the safety and reliability indicators of the power system are also getting higher and higher. The traditional test and diagnosis methods have become increasingly unsuitable, mainly manifested in the need for power failure during the test and the long test cycle. Cause less power transmission and certain impact on economic life, which makes it difficult to diagnose faults and defects in time. With the full development of condition-based maintenance of high-voltage equipment, it is necessary to establish a system for real-time monitoring of the operation status of substation equipment to provid...

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Problems solved by technology

[0003] The purpose of the present invention is to provide an insulation on-line monitoring device for high and low voltage equipment. By collecting the leakage current signal of the high and low voltage equipment, the microprocessor controls the real-time display and storage of monitoring data, and prompts through the alarm module. The interaction of the upper computer realizes remote monitoring, which solves the problem of frequent leakage current faults and inconvenient monitoring of existing high and low voltage equipment

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