Fiber temperature measuring structure used for 10kV distribution transformer

A technology for temperature measurement of distribution transformers and optical fibers, applied in the field of distribution transformers, can solve problems such as large errors

Active Publication Date: 2015-10-21
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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.

Method used

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  • Fiber temperature measuring structure used for 10kV distribution transformer
  • Fiber temperature measuring structure used for 10kV distribution transformer
  • Fiber temperature measuring structure used for 10kV distribution transformer

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with specific embodiment:

[0018] See attached figure 1 with 2 As shown, an optical fiber temperature measurement structure for a 10KV distribution transformer described in this embodiment includes a high and low voltage winding 1, a sensor oil passage stay 6 installed on the high and low voltage winding 1, and is used to detect high An optical fiber temperature sensor 2 for the inner coil temperature of the low-voltage winding 1, an optical fiber junction box 5 connected to the optical fiber temperature sensor 2 through an optical fiber, a wire clamp 3 for fixing the optical fiber, and a clip 4 for fixing and installing the wire clamp 3. Among them, the low-voltage winding in this scheme adopts a multi-layer cylindrical structure, the oil channel on it is located at 1 / 2 of the overall height of the low-voltage winding, and the sensor oil channel stay is set opposite to the low-voltage outlet; the hi...

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PUM

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Abstract

The invention discloses a fiber temperature measuring structure used for a 10kV distribution transformer. The fiber temperature measuring structure is reasonable in structure and convenient to operate and can effectively and accurately detect the hot-spot temperature of a winding inside the transformer. The fiber temperature measuring structure comprises a high-low voltage winding, and further comprises a sensor oil duct stay installed on the high-low voltage winding, a fiber temperature sensor for detecting the temperature of a coil in the high-low voltage winding, a fiber junction box connected with the fiber temperature sensor through a fiber, a lead wire clamp for fixing the fiber and a clamping piece for fixedly installing the lead wire clamp. According to the scheme provided by the invention, the high-low voltage winding in the transformer is provided with the fiber temperature sensor for detecting the hot-spot temperature, and during work, a temperature value is detected through the fiber temperature sensor and is retransmitted to the fiber junction box by use of the fiber, so that the temperature of the high-low voltage winding can be monitored in real time, and it can be ensured that the transformer is at a highly efficient running 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...

Claims

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Application Information

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IPC IPC(8): G01K11/32H01F27/40
Inventor 徐晓刚于冀江龙世熠陈晓科汪进锋李鑫
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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