What are the troubleshooting methods for transformer faults?

The causes of transformer faults are:

1. Circuit malfunction

The problem of circuit faults in transformers mainly refers to the occurrence of short circuits at the outlet of the transformer, as well as short circuits to ground between the leads or windings inside the transformer, and short circuits caused by phase to phase faults. In fact, this type of fault is a very common problem among many faults in actual power transformers, and there are also many practical cases of this fault. For the problem of short circuit in the low-voltage outlet of transformers, in order to solve this problem, it is generally necessary to replace the winding at the fault location. In severe cases, it may be necessary to replace all windings in order to minimize the probability of faults and greatly reduce the serious economic and personal property losses caused by power failures. Therefore, it is necessary to attach great importance to this issue.

2. Fault issues with windings

Winding faults can be classified into the following types in detail: cracking problems at the welding joints, phase to phase short circuits, turn to turn short circuits, winding grounding faults, etc. The reasons for the above faults can be summarized as follows: the insulation problem of the transformer has occurred; There are impurities entering the winding and aged insulators; The working force of the transformer is insufficient; Winding problems caused by deformation: the winding is affected by water vapor; The temperature of the transformer is high.

3. Transformer oil leakage fault

Transformer oil leakage fault is the most common fault in the entire power transformer system. Transformer oil leakage faults can also be explained as power transformer oil leakage leading to subsequent problems, such as serious environmental pollution to the air and potential waste of resources. This greatly increases the operating costs of the enterprise, thereby increasing its economic pressure and market resistance. As a safety hazard, this issue can greatly affect the safe and stable operation of power transformers, and in severe cases, may cause the malfunction of machinery and equipment. It should also be noted that this fault will have an impact on the service quality of the power company and have a significant negative impact on providing safe and scientific services to customers who use electricity.

4. Head temperature, high fault

The temperature and height of the joint in the fault refer to the current carrying joint of the transformer. The current carrying joint of the transformer has always played an extremely important role in the design of the entire transformer. Analyzing and summarizing power accidents, it can be concluded that the unstable connection of the current carrying joint of the transformer causes the temperature at the joint to rise rapidly, even exceeding the ignition point of the joint, resulting in the joint burning out, seriously affecting the safe and stable operation of the power transformer. These issues have sounded the alarm for power companies to ensure safe power supply in the future. In order to effectively reduce the occurrence of such safety accidents and avoid safety electrical accidents caused by high temperatures at the joints, it is necessary for power detection and maintenance workers to pay attention to the temperature changes of the transformer's current carrying joints in their daily inspection and maintenance work, ensuring that the temperature of the joints changes within the normal range, so as to effectively ensure the safe and stable operation of the power transformer.