Application of Sulfur Hexafluoride Sensor in Electric Power Industry

Overview

With the rapid development of national to voltage level transmission and distribution circuits. With the continuous increase of combined electrical appliances such as GIS, the amount of sulfur hexafluoride in the power system is gradually increasing. Sulfur hexafluoride (SF6) is a man-made inert gas mainly used in the power industry. It has many advantages and is a colorless, odorless, non-toxic and non-flammable inert gas. When using sulfur hexafluoride gas, special attention should be paid to the monitoring and prevention of sulfur hexafluoride gas. The hexafluoride sensor independently developed by Jingxun can be used for monitoring.

Application of Sulfur Hexafluoride Sensor

Sulfur hexafluoride gas has good insulation and arc extinguishing properties, and has been fully utilized in the field of high-voltage electrical switchgear in substations. However, it also has certain disadvantages. When arcing, some sulfur-containing subfluorides are produced due to the intense arcing. And it has a corrosive effect on some insulating materials and metals.

Due to certain differences in the manufacture and installation of high-voltage electrical switchgear, and the phenomenon of product material aging after a long time of use. Therefore, there is a gas leakage phenomenon in the production and operation of sulfur hexafluoride high-voltage electrical switchgear. This will affect the normal operation of the device. It will also bring certain security risks to the personal safety of the staff.

Once the sulfur hexafluoride leaks in this case. After the equipment is put into operation, the arc generated during the switching process will lead to the formation of many fluorides and sulfides in the cavity of the closed high-voltage power equipment. Most of these fluorides and sulfides are toxic or even highly toxic. Although the gas will be quickly synthesized and restored to the original gas after the arc is extinguished, a considerable proportion of chemically mixed toxic gas is still produced. These toxic gases mainly damage the human respiratory system. After poisoning, there will be adverse reactions such as colds, skin allergies, nausea and vomiting, fatigue, etc., which can seriously lead to death.

Therefore, when using sulfur hexafluoride gas, special attention should be paid to the monitoring and prevention of sulfur hexafluoride gas. It is necessary to install an online monitoring and alarm system for sulfur hexafluoride leakage.