Ultrasonic detection device for partial discharge of switchgear based on wireless network

A technology of partial discharge and switchgear, which is applied in the direction of testing circuit, testing dielectric strength, etc., can solve the problems of restricting the development of switchgear state monitoring, increasing and adjusting sensors, and the insulation damage of switchgear, so as to save node energy and function Powerful, Safe Guaranteed Effects

Inactive Publication Date: 2011-12-21
TIANJIN UNIV
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Problems solved by technology

There are many disadvantages in using this wired sensor: ① Due to the large number of monitoring points that need to be positioned in the switch cabinet, multiple sensors need to be installed in the switch cabinet, and it is very difficult to lead out a large number of cables, which not only increases the wiring cost, but also may cause the Insulation damage; ②With the passage of time,

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  • Ultrasonic detection device for partial discharge of switchgear based on wireless network
  • Ultrasonic detection device for partial discharge of switchgear based on wireless network
  • Ultrasonic detection device for partial discharge of switchgear based on wireless network

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Embodiment Construction

[0021] In order to overcome the above-mentioned shortcomings of the existing switch cabinet partial discharge detection technology, the present invention provides a switch cabinet partial discharge ultrasonic detection system based on wireless network, which uses ultrasonic sensors and their wireless sensor network technology to monitor the partial discharge in the switch cabinet online. monitoring and positioning. The technical problem to be solved in the present invention and target are as follows:

[0022](1) Ultrasonic waves are generated when partial discharge occurs. Because ultrasonic detection has the characteristics of high sensitivity and strong anti-interference ability, the research on ultrasonic detection method is very popular, but generally the ultrasonic sensor is placed outside the equipment away from the partial discharge source. The location, the ultrasonic wave is attenuated and distorted seriously in the propagation path, making it impossible to use in pra...

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Abstract

The invention relates to ultrasonic detection for partial discharge, and provides a device capable of monitoring changing states of the partial discharge level at any time so as to describe characteristics of partial discharge from a plurality of perspectives. In the technical scheme, a sensor node on the switchgear and a coordinator node form a monitoring network of a tree-type topologic structure through a relay router arranged outside the switchgear; wherein the sensor node comprises an ultrasonic senor, an analog front-end filtration and amplification circuit, an A/D (analog-digital) converter, a sensor node microcontroller MCU module and a sensor node wireless radio-frequency module connected sequentially; and the coordinator node comprises a coordinator wireless radio-frequency module, a coordinator microcontroller MCU module and a coordinator GPRS (general packet radio service) module connected sequentially, wherein the coordinator GPRS module communicates with a GPRS module ofa remote monitoring center. The device is mainly applied in ultrasonic detection of discharge.

Description

technical field [0001] The invention relates to ultrasonic detection of partial discharge, in particular to an ultrasonic detection device for partial discharge of a switch cabinet based on a wireless network. Background technique [0002] Electricity is the most important technical basis for production development and social change. With the rapid development of my country's economy, the automation construction and transformation of the electric power industry, power supply and power-consuming enterprises are constantly developing and improving, and the voltage level of electric equipment is also increasing. The reliability of power equipment operation puts forward more stringent requirements. [0003] Switchgear is a very important electrical equipment in the power system. Modern power systems have higher and higher requirements for power quality, and correspondingly higher requirements for the reliability of the switchgear. The operating state of the switchgear has a sign...

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Application Information

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IPC IPC(8): G01R31/12G01R31/14
Inventor 杜伯学张锴李云鹏高宇刘勇胡文佳
Owner TIANJIN UNIV
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