Air core reactor

An air-core reactor and anti-creepage technology, which is applied in the direction of instruments, scientific instruments, electrical component structure associations, etc., can solve the problems of reduced reactor life, large randomness, and failure to detect hidden dangers in time, so as to improve the operating life and avoid Burnout accidents, the effect of lowering the internal temperature

Inactive Publication Date: 2012-12-05
TEBIAN ELECTRIC APP CO LTD
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Problems solved by technology

This inspection method is limited by time and is relatively random, and the temperature inside the reactor can only be judged by the temperature of the outer surface of the reactor and the temperature rise inside the reactor can be inferred, let alone real-time monitoring of the reactor. Temperature changes, so hidden dangers cannot be detected and eliminated in time, resulting in a reduction in the life of the reactor

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Embodiment Construction

[0023] In order to enable those skilled in the art to better understand the technical solution of the present invention, the air-core reactor provided by the present invention will be described in detail below with reference to the accompanying drawings.

[0024] When the air-core reactor works for a long time, the heat transfer process is very complicated. The heat transfer inside the coil is heat conduction, and the heat transfer mode between the package and the package and between the winding and the outside is convection, heat conduction and radiation. Among them, the heat transfer between the winding and the outside world is dominated by convective heat transfer.

[0025] For such a complex heat dissipation problem, empirical formulas are often used for calculation when manufacturing air-core reactors. The approximate empirical formula for the average temperature rise of the air-core reactor is:

[0026] τ=Kθ(q)β=Kθ(p / s)β

[0027] τ-winding temperature rise (K);

[00...

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Abstract

The invention provides an air core reactor, which comprises a coil, wherein the coil comprises a plurality of encapsulations; each encapsulation comprises a plurality of parallel conductor layers; an optical fiber probe used for measuring the internal temperature of the coil is arranged in the coil; and the optical fiber probe is connected with a temperature controller arranged outside the coil. According to the invention, the internal temperature of the air core reactor can be accurately monitored with the help of the optical fiber probe in the coil in real time, so that the accident that the air core reactor is burnt down by over temperature can be avoided, and the operation service life of the reactor can be prolonged further.

Description

technical field [0001] The invention relates to an air-core reactor. Background technique [0002] In the power system, the air-core reactor gradually replaces the traditional oil-immersed and cement reactors because of its good linearity of reactance value, easy installation and maintenance, and low cost. Especially in recent years, with the construction of a large number of transmission lines with a voltage level above 750kV in my country, and the large-scale use of air-core reactors with high voltage and large capacity above 66kV, the air-core reactor has been greatly developed. [0003] However, due to the limitations of design, manufacturing process level and monitoring and testing methods, accidents of air-core reactors occur frequently, resulting in a reduction in the life of the reactor. Factors that affect the life of the reactor include environmental factors, electrical factors, design margins, and humidity, etc., but the most important factor is the temperature o...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F17/02H01F27/40G01K11/00
Inventor 王宇侯振华房玉杰
Owner TEBIAN ELECTRIC APP CO LTD
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