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SF6 circuit breaker gas on-line monitor

A circuit breaker body and circuit breaker technology, applied in the field of power systems, can solve the problems of monitoring instrument installation damage, inability to operate equipment online, and poor real-time detection, so as to avoid malignant failures, improve automation, and prevent air pollution.

Inactive Publication Date: 2009-12-09
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is relatively accurate in detecting humidity, but there are still the following major disadvantages: 1. It requires the SF6 circuit breaker to be out of service, the equipment cannot be operated online, and the real-time detection is poor, which is not suitable for the running circuit breaker; 2. This method Due to the cumbersome operation process and strong skill of the detection method, experienced professional and technical personnel are required to operate; 3. This method will waste a lot of gas during operation, and also cause environmental pollution
The traditional method of detecting temperature and pressure is to use the temperature and pressure instruments installed in the cavity of the circuit breaker to test respectively. This method is accurate, but the installation of the monitoring instrument will damage the circuit breaker body and may cause gas leakage. , with many negative effects

Method used

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  • SF6 circuit breaker gas on-line monitor
  • SF6 circuit breaker gas on-line monitor
  • SF6 circuit breaker gas on-line monitor

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Experimental program
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Embodiment Construction

[0034] The technical scheme of the present invention is a monitor for monitoring gas humidity by using an air filling port of a circuit breaker, which is used for on-line monitoring of gas characteristic parameters of an SF6 circuit breaker without damaging the circuit breaker body.

[0035] Further illustrate the present invention below in conjunction with accompanying drawing.

[0036] 1. If figure 1 The hardware structure of the monitor shown

[0037] The monitor uses a single-chip microcomputer (ATMEGA128) as the main control CPU, which is responsible for the overall signal acquisition, processing and various interface controls. The 12-bit AD converter of the single-chip microcomputer (ATMEGA128) realizes the signal conversion of temperature, pressure, humidity, etc. After being corrected and compensated by the software, it is sent to the LCD for local display. The liquid crystal is 8*2 low-temperature liquid crystal, which can work at -30°C, and the real-time temperatur...

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Abstract

An SF6 circuit breaker gas detection on-line monitor relates to gas temperature, pressure and humidity detection. It uses the gas charging interface of the SF6 circuit breaker to connect with the gas exporting joint to export the gas. After the monitor is installed, the gas exporting joint automatically opens the check valve in the charging interface of the SF6 circuit breaker body. The gas enters the air cavity and passes through the temperature sensor and pressure sensor. , Humidity sensors are monitored separately and then processed by the circuit to display each parameter, and can be used for extended processing such as alarm and communication. The monitor can realize online monitoring, improve the automation of equipment maintenance, detect abnormalities in time, and avoid malignant failures.

Description

technical field [0001] The invention belongs to the field of power systems, and relates to an SF6 circuit breaker gas on-line monitor, in particular to gas temperature, pressure and humidity detection. Background technique [0002] Among the primary equipment of the power system, high-voltage circuit breakers are large-scale power equipment second only to generators and transformers, and the required quantity and installation investment rank ahead of the two. The health status and operation reliability of high-voltage circuit breakers are directly related to the safety and stability of the power system. Many major equipment damages, power outages and other accidents are caused by abnormal operation of high-voltage circuit breakers. With the development of social production and life, people have higher and higher requirements for the stability of power grid operation, which also prompts power production and operation units to pay more and more attention to the health of power...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/327G01R31/333G01R31/00G01D21/02G08C23/04
Inventor 胡晓光孙来军
Owner BEIHANG UNIV
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