Oil-type transformers are common equipment in power systems and are used to convert high voltage into low voltage for use by various equipment. In order to ensure the safe operation of the transformer and extend its service life, appropriate protective measures must be taken. This article will focus on oil-type transformer protection measures, including oil level protection, oil temperature protection, gas relay protection, and oil leakage protection.
First of all, oil-level protection is one of the most basic protection measures in oil-immersed transformers. By monitoring the oil level in the transformer tank, insufficient oil or oil leakage can be detected in time, thereby avoiding damage to the transformer due to lack of oil. Oil level protection is usually implemented using a float switch or sensor. Once the oil level falls below a preset value, the protection device will automatically cut off the power supply to the transformer to protect the equipment from damage.
Secondly, oil temperature protection is also crucial. Oil-type transformers will generate a certain amount of heat when working. If the oil temperature is too high, it will cause the insulation material to age and even cause a fire. Therefore, it is necessary to install an oil temperature sensor to monitor the oil temperature and set up corresponding protection devices. Once the oil temperature exceeds the set value, the protection device will activate and cut off the power supply to avoid transformer failure.
In addition, gas relay protection is also a commonly used protection method in oil-type transformers. Inside the transformer, due to aging or failure of the insulation material, a small amount of gas, such as ethane, ethylene, etc., will be produced. The gas relay can monitor the gas content inside the transformer. Once it exceeds the preset value, it will sound an alarm and cut off the power supply to prevent the transformer from malfunctioning.
Finally, oil leakage protection is also very important. Due to the long-term operation of the transformer, oil leakage may occur in the oil tank and pipelines. If not handled in time, it will cause serious harm to the equipment and the environment. Therefore, it is necessary to install oil leakage sensors to monitor oil leakage in fuel tanks and pipelines and take timely measures to repair them. In addition, an oil leakage alarm device can also be set up. Once oil leakage is detected, an alarm will be issued immediately for timely processing.
To sum up, the protection measures of oil-type transformers include oil level protection, oil temperature protection, gas relay protection, and oil leakage protection. These protection measures can effectively ensure the safe operation of the transformer and extend the service life of the equipment. They are an important part of the power system. an indispensable and important component. We hope this article can provide some reference and help to relevant practitioners.