Synchronization device for partial discharge multi-node monitoring system of switchgear

Abstract

The invention discloses a synchronizing device for a switch cabinet local discharge multi-joint monitoring system. A main joint processor unit is used for enters the synchronizing signal emission modeby controlling a mode diverter switch, and pulse transmits wireless synchronous signals to each sub monitoring node through an antenna; after each sub monitoring node receives the synchronous pulse signal emitted by the main monitoring node, a sub joint signal conditioning unit rapidly triggers an analog-digital conversion unit, local discharge signals are measured, then, collecting signals are sent to the main node processor unit through a sub node digital communication unit, synchronized monitoring of multiple sub monitoring nodes installed on a multi-face switch cabinet is achieved, the problem that local discharge signal time sequences and voltage phase information cannot be accurately obtained in the current technical field of switch cabinet local discharge wireless monitoring is solved, the structure is simple, and the solid technical foundation is directly laid for local discharge positioning and local discharge mode recognition based on voltage phase information.

Description

technical field [0001] The invention relates to the research, technical development and application fields of electric equipment state monitoring, electric asset management and other related equipment, and in particular to a synchronization device for a partial discharge multi-node monitoring system of a switchgear. Background technique [0002] As a kind of power equipment integrating measurement, control and protection, high-voltage switchgear is widely installed in power plants, medium-voltage and high-voltage substations, and plays a vital role in the safe operation of the power grid and the distribution and measurement of electric energy. In view of this, the monitoring and diagnosis of the high-voltage switchgear's own operating status has been a subject of concern for scientific research institutes, monitoring equipment manufacturers, power production and power grid companies for many years, and a variety of monitoring technologies have been proposed one after another....

AI Technical Summary

Problems solved by technology

However, the small-scale application shows that this technology has problems such as weak anti-interference ability, difficulty in locating the switchgear surface with hidden partial discharge hazards in time, and difficulty in carrying out deep insulation diagnosis and risk assessment, which hinder its further promotion and application.

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