In the power system,SF6Sulfur hexafluoride gas is widely used in high-voltage switchgear, transformers, and gas insulated substations due to its excellent insulation and arc extinguishing properties（GIS）In the middle. However,SF6Gas leakage not only causes a decrease in equipment performance, but also its decomposition products (such as...)SO2TheHFIt may also pose a threat to human health and the environment. Launched by Liou Measurement and ControlLE-Mi2000typeSF6The gas leakage monitoring and alarm system builds a reliable defense line for the safe operation of power equipment through high-precision detection, real-time alarm, and intelligent management functions.

1、 Core function: Accurate detection, prevention and control

1. Multi parameter synchronous monitoring, comprehensive perception of leakage risk

LE-Mi2000The system integrates electrochemical sensors, laser scattering technology, and temperature and humidity compensation modules, which can monitor simultaneouslySF6Gas concentration（0-2000ppm）Environmental oxygen content（0-25%VOL）Key parameters such as temperature and humidity. For example, whenGISWhen a small leak occurs in the device, the system can quickly capture itSF6Changes in concentration and correction of detection results through temperature and humidity data to avoid false alarms caused by environmental interference. Its detection sensitivity is as high as0.1ppmFar exceeding industry standards, ensuring that even trace leaks can be detected in a timely manner.

2. Intelligent alarm grading, quick response to hidden dangers

The system supports a three-level alarm mechanism:

Warning threshold（500ppm）When:SF6When the concentration approaches the safety limit, an audible and visual warning is triggered to remind the operation and maintenance personnel to pay attention to the equipment status.

Level 1 alarm（1000ppm）When the concentration exceeds the standard, the system automatically starts the exhaust device and sends a text message/APPNotify the responsible person.

Level 2 alarm（1500ppm）In emergency situations, the linkage alarm will sound a high-frequency alarm and cut off the power supply of the equipment to prevent the accident from escalating.

This grading strategy not only avoids frequent false positives, but also ensures rapid disposal of major leaks. For example, a certain substation was once affected by loose boltsSF6Leakage, the system is experiencing an increase in concentration800ppmA warning was issued immediately, and the operation and maintenance personnel promptly tightened the bolts to avoid equipment shutdown.

2、 Technical highlights: Stable and reliable, adaptable to complex environments

1. Anti interference design ensures long-term stability

Regarding electromagnetic interference, vibration, and corrosive gases in the operating environment of power equipment,LE-Mi2000Adopting industrial grade protective design:

Sensor shielding layer: effective isolation50HzPower frequency interference ensures stable detection data.

IP65Protection level: dustproof and waterproof shell suitable for harsh outdoor environments, with a service life exceeding10Year.

Self calibration function: Built in standard gas calibration module, can automatically correct sensor drift on a regular basis, reducing manual maintenance costs.

2. Wireless networking and remote management to improve operational efficiency

system supportLoRaWireless communication technology, with a single base station coverage radius of up to1kmIt is easy to build a monitoring network for large substations. Through the upper computer software or cloud platform, operation and maintenance personnel can view the real-time monitoring of each monitoring pointSF6Concentration curve, historical data, and alarm records, achieving“centralized monitoring+Distributed maintenance”Intelligent management. For example, after a provincial power grid company deployed the system, the operation and maintenance efficiency improved40%The annual fault response time has been shortened to2Within hours.

3、 Application scenario: Comprehensive coverage from substations to industrial fields

1. Power industry: ensuring the safe operation of high-voltage equipment

InGISTheHGISandSF6In the circuit breaker,LE-Mi2000Real time monitoring of hidden defects such as seal aging and weld cracking can prevent insulation breakdown accidents caused by leakage. It andSCADAThe seamless integration of the system further realizes the linkage control between leakage alarm and equipment shutdown.

2. Industrial field: extended to chemical, metallurgical and other scenarios

In addition to the power system, this system can also be applied toSF6Gas storage tank area, metal smelting electric arc furnace and other scenes. For example, a certain aluminum factory deployed in the electrolysis workshopLE-Mi2000Afterwards, the leakage of the gas storage tank valve was successfully detected, avoiding the risk ofSF6The risk of suffocation caused by accumulation.

Conclusion: Technology empowers security and safeguards green power grids

LE-Mi2000typeSF6The gas leak monitoring and alarm system solves the pain points of slow response, high false alarm rate, and high maintenance cost in traditional monitoring methods through high-precision detection, intelligent alarm, and remote management functions. Its application not only improves the reliability of power equipment operation, but also reducesSF6Gas emissions and practices“carbon peaking and carbon neutrality”The goal provides technical support. With the advancement of smart grid construction, this system will become a key tool for ensuring energy security and promoting green development.