An Optical Fiber Temperature Measuring Structure for 10kv Distribution Transformer

Abstract

The invention discloses an optical fiber temperature measuring structure for a 10KV power distribution transformer with reasonable structure, convenient operation and capable of effectively and accurately detecting the hot spot temperature of the inner winding of the transformer; The sensor oil channel support on the winding, the optical fiber temperature sensor used to detect the coil temperature in the high and low voltage winding, the optical fiber junction box connected to the optical fiber temperature sensor through the optical fiber, the wire clamp used to fix the optical fiber, and the fixed installation The clamp of the wire clamp; in this scheme, an optical fiber temperature sensor for detecting the hot spot temperature is installed on the high and low voltage windings in the transformer, and the temperature value detected by the optical fiber temperature sensor is transmitted back to the optical fiber connection by the optical fiber during operation In the box, the temperature of the high and low voltage windings is monitored in real time to ensure that the transformer is in an efficient operation state.

Description

technical field [0001] The invention relates to the technical field of distribution transformers, in particular to an optical fiber temperature measuring structure used in 10KV distribution transformers. Background technique [0002] Generally, the types of transformer faults mainly include thermal faults and electrical faults, among which thermal faults account for about 60% of the total number of faults, and overheating and high-energy discharge faults account for about 10%. The service life of an oil-immersed transformer mainly depends on the service life of the insulating material, and the decisive factor that promotes the aging of the insulating material is the temperature. Therefore, the hot spot temperature of the transformer determines the service life of the transformer. [0003] In the past, due to the internal insulation requirements of the transformer and the strong internal electromagnetic interference, the temperature of the hot spot could not be monitored. Fo...

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Problems solved by technology

For this reason, in the past, the method of installing a current transformer at the lower part of the bushing and returning an analog signal to measure the hot spot temperature of the transformer winding has a large error.

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