Talking about the short-circuit fault of dry-type transformer

Dry-type transformers are an important part of the power system, and their stability and safety have a great impact on the power system. When a dry-type transformer is short-circuited, the winding is affected by various forces such as compression and bending at the same time as it is affected by electricity. The resulting faults are sometimes hidden, making inspections and repairs difficult. Therefore, when a short-circuit failure occurs, check the winding condition.

Therefore, today I will mainly talk about the matters needing attention in the short-circuit fault handling of dry-type transformers. When replacing insulating parts, ensure the performance of the insulating parts. The performance of insulating parts should be tested during processing. Use when it meets the requirements. Pay special attention to the insulation of the lead support material.
Replace the winding material with larger short-circuit resistance and improve the structure. The mechanical strength of dry-type transformer windings is mainly determined by the following two aspects. One is the mechanical strength determined by the structural elements of the winding itself. Another is that the mechanical strength is determined in the manufacturing processes of the winding inner diameter side support, the winding shaft compression structure, the plate, and the jig. Many dry-type transformer manufacturers now use semi-hard copper wires or self-adhesive exchange wires to increase the short-circuit resistance of the winding itself.
Amorphous alloy dry-type transformers use better quality paperboard cylinders, or increase the number of support rods to improve the ability of the winding to withstand radial forces, and use plates or springs to crimp to improve the ability of the winding to withstand axial forces. As the technical department of electric dry-type transformers, we should fully investigate and pay attention to the short-circuit resistance capability of the windings during the technical demonstration before signing the dry-type transformer sales contract and the winding exchange of the dry-type transformers.
The warming of global temperature and the increase of severe weather have brought huge threats to people's lives and property. The whole world has noticed that the further deterioration of the environment will bring unprecedented challenges to the development of human life. Dry-type power transformers have now been widely used in the market and are deeply loved by the majority of enterprises. It also plays a positive role in solving the peak power consumption in summer.

https://www.nbdce.com/