Gas monitoring system of insulated ring main unit based on wireless sensing technology

Abstract

The invention relates to the technical field of power distribution equipment, in particular to a gas monitoring system of an insulated ring main unit based on a wireless sensing technology. The system comprises a cabinet body, a single-chip microcomputer, a partial discharge monitoring module, a gas leakage monitoring module, a temperature monitoring module, a moisture monitoring module, a current and voltage monitoring module, a gas flowmeter, a pressure monitoring module, a wireless sensing radio frequency module, a remote display terminal and a field display terminal. The partial discharge monitoring module, the gas leakage monitoring module, the temperature monitoring module, the moisture monitoring module, the current and voltage monitoring module, the gas flowmeter, the pressure monitoring module and the wireless sensing radio frequency module are electrically connected with the single-chip microcomputer. The internal environment of the insulating ring main unit is monitored from multiple dimensions of insulating gas temperature, pressure, leakage condition, moisture content in the gas tank, partial discharge condition and line current and voltage, so that the state of the insulating gas is evaluated in multiple dimensions, and the safety is improved.

Description

technical field [0001] The invention relates to the technical field of power distribution equipment, in particular to a gas monitoring system of an insulating ring network cabinet based on wireless sensing technology. Background technique [0002] The ring network cabinet is a set of high-voltage switchgear installed in a steel plate metal cabinet or made into an assembled interval ring network power supply unit. It has the advantages of simple structure, small size, low price, improved power supply parameters and performance, and power supply safety. ; Mainly include gas insulated ring network cabinets and solid insulated ring network cabinets. Among them, most gas-insulated ring network cabinets use SF 6 Gas as insulating medium, SF 6 has a greenhouse effect, and after arc discharge, SF 6 The gas decomposes into a toxic low-fluoride gas. [0003] During the operation of the ring network cabinet, there is a risk of arcing fault inside the gas box. Once an arcing fault o...

AI Technical Summary

Problems solved by technology

[0003] During the operation of the ring network cabinet, there is a risk of arcing fault inside the gas box. Once an arcing fault occurs, it needs to release the pressure to the outside, which will cause SF 6 Gas leakage will not only endanger the health of substation personnel, but also cause air pollution

[0004] At present, gas monitoring for insulated ring main units is mostly limited to SF 6 Gas leakage, individual monitoring of the temperature and air pressure of the gas box, such as the gas online monitoring system disclosed in China inventing an inflatable ring network cabinet gas online monitoring system (public number: CN111609978A), for the state of the insulating gas in the insulating ring network cabinet Lack of multi-dimensional evaluation, poor security

Images