How to diagnose transformer faults? In the daily operation process of transformers, long-term exposure to outdoor environments or overload work can seriously affect the lifespan of transformers and cause transformer faults. Therefore, this article briefly introduces several basic methods for diagnosing transformer faults.
1、 Knowledge of partial discharge faults in transformers and related testing instruments for partial discharge faults. Its gas production characteristic is that the hydrogen component is the most (accounting for over 85% of the total hydrogen hydrocarbon), followed by knowledge of methane testing instruments. The consequence of partial discharge is insulation aging. If left unchecked, it can cause insulation damage and even cause knowledge related to accident testing instruments.
2、 Low energy discharge faults in transformers are generally caused by electric spark discharge, and the main fault gases are related knowledge of ethylene and hydrogen testing instruments. Due to its small fault energy, the total hydrocarbon content generally does not increase the knowledge of testing instruments.
3、 Transformer high-energy discharge faults are characterized by high gas production and intense gas production. It is difficult to pre diagnose them using the method of measuring dissolved gases in oil. Often, it is only after a fault occurs (such as a transformer light gas signal) that we can diagnose and test the nature and severity of transformer faults based on the analysis of gas and gas components in the oil.
4、 Transformer overheating fault, the gas generated by overheating fault is mainly methane and ethylene, and ethylene is the main component testing instrument related knowledge. If solid insulation materials are involved, it will generate a lot of knowledge related to CO and CO2 testing instruments. If there is no CO or CO2, it may be related to the knowledge of bare metal local overheating fault testing instruments.
In practical work, transformers often exhibit various types of faults. Therefore, power workers should constantly summarize their experience and improve their business capabilities in daily work. When a transformer fault occurs, they can promptly investigate and identify the cause of the fault and provide corresponding solutions to ensure the normal operation of the transformer.