How to diagnose transformer faults? During the daily operation of transformers, prolonged exposure to outdoor environments or overloading can seriously affect their lifespan and cause transformer failures. 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 characteristics are characterized by the highest hydrogen component (accounting for more than 85% of the total hydrogen hydrocarbons), followed by knowledge related to methane testing instruments. The consequence of partial discharge is insulation aging. If left unchecked, it can cause insulation damage and even lead to knowledge related to accident testing instruments.
2, Low energy discharge faults in transformers are generally caused by electric spark discharge, and the fault gases are mainly related to ethylene and hydrogen testing instruments. Due to its small fault energy, the total hydrocarbons generally do not have high knowledge of testing instruments.
3, High energy discharge faults in transformers result in large gas production and intense gas production. It is difficult to pre diagnose them using methods for measuring dissolved gases in oil. Often, it is only after a fault occurs (such as light gas transmission in transformers) that we can diagnose and test the nature and severity of transformer faults based on the analysis of gas and gas components in 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 the bare metal local overheating fault testing instrument.
Transformers often exhibit various types of faults in practical work. Therefore, power workers should constantly summarize their experience and improve their business capabilities in daily work. When a transformer fault occurs, they should be able to promptly investigate and identify the cause of the fault and provide corresponding solutions to ensure the normal operation of the transformer.