Fault diagnosis and preventive maintenance strategy for metering transformers
Release Time : 2025-02-24
Fault diagnosis of metering transformer is the key to ensure its stable operation. Common faults include winding short circuit, insulation aging, oil quality deterioration, etc. These faults may lead to inaccurate metering and even cause greater power accidents. Therefore, regular troubleshooting, using modern monitoring technology and equipment, such as oil chromatograph, ultrasonic detector, etc., to monitor the metering transformer in real time, and timely discover and deal with potential problems are important means to prevent faults.
In the process of fault diagnosis, observation method is a simple and effective method. By observing the appearance of the metering transformer, listening to its running sound, smelling whether there is any odor, etc., it can be preliminarily judged whether the metering transformer is abnormal. For example, abnormal sound emitted by the metering transformer may be a manifestation of internal mechanical looseness or winding short circuit.
The formulation of preventive maintenance strategy should be based on the actual operation of the metering transformer and historical fault data. Through regular maintenance, such as cleaning up debris around the metering transformer, checking and tightening the terminal, replacing aging insulation parts, etc., the failure rate can be significantly reduced.
Oil quality management is an important part of preventive maintenance. The metering transformer oil will gradually deteriorate during operation, producing various gases and impurities. Regularly testing the oil quality, such as oil chromatography analysis, can timely detect changes in the gas content dissolved in the oil, thereby determining whether the metering transformer has potential faults such as overheating or discharge.
Temperature monitoring is also the key to preventive maintenance. The metering transformer generates heat during operation, and excessive temperature will accelerate the aging of the insulation material and even cause failures. Therefore, installing a temperature monitoring device, real-time monitoring of the operating temperature of the metering transformer, and taking necessary heat dissipation measures are important measures to ensure the stable operation of the metering transformer.
For the faults or hidden dangers that have been found, measures should be taken immediately to deal with them. For problems that can be solved on site, such as replacing aging insulation parts and tightening loose terminals, personnel should be organized immediately to repair them. For problems that cannot be solved on site, professional maintenance personnel should be contacted quickly to deal with them to prevent the expansion of faults.
Establishing a complete maintenance record and analysis system is also an important part of preventive maintenance. By recording the details of each maintenance, including maintenance time, maintenance content, problems found and treatment methods, etc., it can provide a reference for subsequent maintenance work. At the same time, regular analysis of maintenance records and summarization of lessons learned can continuously optimize maintenance strategies and improve maintenance efficiency.