System for monitoring high voltage switch cabinet partial discharge online

Abstract

The invention discloses a system for monitoring a high voltage switch cabinet particle discharge online. The system for monitoring a high voltage switch cabinet partial discharge online comprises a ZigBee sensor node, a wireless communication module and an upper computer monitoring module. The ZigBee sensor node comprises an ultrasonic sensor module, an ultrasonic signal conditioning module, an ultrahigh frequency sensor module, an ultrahigh frequency signal conditioning module, an ultraviolet ray sensing and conditioning module and a sensor. The ultrasonic wave signal conditioning unit comprises an amplification circuit, a filtering circuit and an A / D conversion circuit. The ultraviolet ray sensing and conditioning module comprises an UV photoelectric conversion unit, a high voltage driving unit, a I / U conversion unit, a pulse amplification unit and a pulse discrimination unit. The system for monitoring high voltage switch cabinet partial discharge online can perform comprehensive andreal-time monitoring on the switch cabinet and is low in cost, low in false alarm rate and easy to install.

Description

technical field [0001] The invention relates to the field of electrical technology, in particular to a system for on-line monitoring of partial discharge of a high-voltage switchgear. Background technique [0002] With the development of the national economy and the support of relevant industrial policies for the power industry, the power industry has become an important pillar to ensure the operation of the national economy. With the development of the power industry, the requirements for the stability and reliability of power system operation are getting higher and higher, and the disadvantages of ordinary power grids are gradually exposed. Therefore, in the case of traditional grid operation problems, smart grid is entering people's field of vision, and has gradually become the main force of modern urban grid transmission. The smart grid is derived from the fusion of modern advanced technologies, such as intelligent decision-making technology, integration technology, mod...

AI Technical Summary

Problems solved by technology

The operating state of the switchgear has a major impact on the reliability of the power supply of the power system. The consequences of the occurrence of the fault are very serious. The direct harm is the damage to the lines and equipment protected by the equipment, and the indirect harm caused by the loss of power will cause users Large-scale power outages affect normal life, production and even social stability

At present, switchgears are more and more widely used in power systems, and the insufficiency of on-site test methods for switchgears and the insulation failure of switchgears in operation seriously threaten the safe operation of power systems.

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