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With the continuous development of high-voltage power equipment, SF6 gas, as an excellent insulating and arc-extinguishing medium, is being increasingly widely used, especially in gas-insulated metal-enclosed electrical equipment (GIS). However, an increase in the moisture content or gas leakage in SF6 gas will lead to a decrease in insulation performance, thereby affecting the safe operation of GIS. Therefore, the online monitoring of the density monitoring system is particularly important, as it can effectively prevent potential equipment failures.
The SF6 micro-water density monitoring system is mainly used for circuit breakers or GIS equipment with voltage levels from 110kV to 750kV, to monitor the state of SF6 gas in real-time. This system integrates multiple functions, accurately measuring the temperature, density, and micro-water volume fraction (PPM) of the gas. With advanced sensors, the system can transmit these data through communication to an integrated monitoring unit for centralized management.
In practical operation, the monitor is directly connected with the SF6 gas chamber, and the main IED system not only powers the monitor but also handles data communication. Data is transmitted via optical fiber to the backend computer, where the gas status is displayed and analyzed in real-time. This design of the density monitoring system ensures stability and reliability in high-voltage electric field environments, eliminating the effects of temperature and pressure on measurements.
The SF6 micro-water density monitoring system has several notable performance characteristics, making it an indispensable part of GIS equipment. Firstly, the system adopts a fully enclosed design with waterproof and dustproof capabilities and can withstand strong electromagnetic interference, suitable for use in high-frequency electric fields and outdoor environments. This feature ensures stable operation of the system under various conditions.
Secondly, the system integrates temperature and micro-water measurement chips, capable of directly measuring the gas temperature, eliminating the temperature difference inside and outside the gas chamber, thereby improving the accuracy of density value calculation. Additionally, the system measures the micro-water value in the gas using the vapor pressure method, similar to the traditional mirror method, ensuring measurement accuracy.
Furthermore, the SF6 micro-water density monitoring system also features online data collection, fault alarm, and backend data display and analysis, enabling power enterprises to timely understand the equipment status and take corresponding measures to prevent potential risks.
In the operation of GIS equipment, safety is the primary consideration. The density monitoring system can monitor the state of SF6 gas online in real-time, helping maintenance personnel quickly identify and address equipment faults. When the micro-water content or density of the SF6 gas exceeds the set range, the system automatically sends an alarm signal and provides fault information, ensuring that staff take timely measures to avoid accidents.
By implementing the SF6 micro-water density monitoring system, power enterprises not only improve the safety and reliability of the equipment but also reduce maintenance costs. With the development of intelligent technology, this system can also interact with other monitoring equipment to achieve more comprehensive monitoring and management.
The SF6 micro-water density monitoring system plays an important role in ensuring the safe operation of GIS equipment. By real-time monitoring of the gas status, this system effectively prevents equipment failures caused by SF6 gas leakage or excessive moisture content. With continuous technological advancements, future density monitoring systems will become more intelligent, providing a more robust safety guarantee for the power industry.
