From the perspective of device security, micro water and density anomalies directly threaten the lifespan of power equipment. When the micro water content of SF6 gas is too high, in the high-temperature environment of equipment operation, the water will react with SF6 decomposition products to generate corrosive gases such as HF and SO2. These gases will gradually erode the metal components and insulation materials inside the equipment, leading to a significant decrease in insulation performance. Once the insulation fails, it may cause internal flashover accidents, resulting in the burning of switchgear. The decrease in SF6 gas density will weaken its arc extinguishing ability. When the equipment is opened and closed, it cannot effectively extinguish the arc, which can easily cause contact burnout and even equipment explosion. The traditional manual periodic detection method has the problems of long detection intervals and data lag, making it difficult to capture sudden changes in micro water and density in real time. On the other hand, online monitoring systems can collect data 24 hours a day without interruption. Once the value exceeds the safety threshold, an alarm will be triggered immediately to buy repair time for operation and maintenance personnel and avoid accidents from the root cause.

In terms of operational efficiency, online monitoring systems have changed the limitations of traditional operational models. In the past, power operation and maintenance personnel had to carry professional equipment to the substation site for inspection. They not only had to face safety risks such as high-altitude operations and high-voltage environments, but were also affected by factors such as weather and traffic, resulting in low inspection efficiency. For substations in remote areas, a single inspection may take several days, and manual inspection data may have subjective errors, making it difficult to form a continuous data analysis curve. The SF6 gas micro water density online monitoring system can transmit real-time data to the monitoring platform of the operation and maintenance center through Internet of Things technology. Staff can view the operating status of all equipment in the background, achieving "control of backup status without leaving home". At the same time, the system can automatically generate data reports and trend analysis charts, helping operation and maintenance personnel accurately judge the degree of equipment aging, formulate targeted maintenance plans, and greatly improve operation and maintenance efficiency.

From the perspective of cost control, online monitoring systems can effectively reduce the economic losses of power enterprises. On the one hand, power outages caused by equipment failures can have a huge impact on industrial production and residents' lives, and power companies need to bear high compensation costs for power outages; On the other hand, the cost of repairing or replacing damaged equipment is high. Taking a 220kV high-voltage circuit breaker as an example, the replacement cost can reach hundreds of thousands of yuan. The online monitoring system avoids equipment failures by providing early warnings, significantly reducing maintenance costs and power outage losses. In addition, traditional manual testing requires a large amount of manpower and material resources, while online monitoring systems achieve automated monitoring, reducing labor costs and having significant economic benefits in the long run.