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Heated dehumidification current transformer and metal-enclosed switchgear

A technology of current transformers and electric heaters, which is applied in the direction of inductors, switchgear settings, transformers/inductor coils/windings/connections, etc., which can solve problems such as terminal box humidity and eliminate condensed water and water mist. Effect

Active Publication Date: 2021-09-07
HENAN PINGZHI HIGH VOLTAGE SWITCHGEAR +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a heating and dehumidification current transformer and metal-enclosed switchgear to solve the problem of moisture in the terminal box of the current transformer in the prior art

Method used

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  • Heated dehumidification current transformer and metal-enclosed switchgear

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Embodiment Construction

[0014] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0015] A specific embodiment of the current transformer in the present invention, such as figure 1 As shown, the current transformer includes a busbar cylinder 2 for being sleeved on the conductor 1 and a working coil 5 for being sleeved on the busbar cylinder 2. The working coil 5 is covered with an outer cover 3, and the outer cover 3 is provided with a The terminal box 9 that accommodates the terminals 8 of the incoming and outgoing lines of the working coil 5 is provided with an electric heater 7 inside the terminal box 9, and a power supply coil 4 for supplying power to the electric heater 7 is also sleeved on the busbar barrel 2 .

[0016] In this embodiment, the electric heater 7 is a resistive heater, the bus barrel 2 is a cylinder formed by rotation, the power supply coil 4 and the working coil 5 are wound on the outer surface of the bus barrel...

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Abstract

The invention relates to a heating and dehumidifying current transformer and a metal-enclosed switchgear to solve the moisture problem in the terminal box of the current transformer in the prior art. The technical scheme is as follows. The heating and dehumidification current transformer includes a busbar cylinder sleeved on the conductor and a working coil sleeved on the busbar cylinder. The working coil is covered with an outer cover, and the outer cover is provided with a working coil The terminal box for the terminals of the incoming and outgoing lines is provided with an electric heater inside the terminal box, and a power supply coil for supplying power to the electric heater is sheathed on the bus barrel. After the conductor is energized, it forms a primary winding, and the power supply coil forms a secondary winding and obtains an induced current to supply power to the electric heater. The heater heats the air in the terminal box, and the temperature of the air in the terminal box rises, reducing the relative temperature of the air in the terminal box. Humidity promotes convection between the air in the terminal box and the outside air, thereby discharging the condensed water and water mist in the terminal box, and playing the role of heating and dehumidification.

Description

technical field [0001] The invention relates to a heating and dehumidification current transformer and a metal-enclosed switchgear. Background technique [0002] In recent years, with the rapid development of the national power industry, the demand for gas-insulated metal-enclosed switchgear (including GIS / HGIS / T-GCB) is increasing day by day. The existing GIS / HGIS / T-GCB substation is equipped with a current transformer (abbreviated as CT). The existing current transformer includes a hollow busbar barrel through which the live conductor passes. The busbar barrel is sleeved with a Working coil, the outer cover of the working coil is provided with an outer cover, and the outer cover is fixed on the busbar cylinder, and the outer cover is provided with a terminal box, and the terminals of the incoming and outgoing lines of the working coil are arranged in the terminal box, and the terminal box There is a convection device for convection with the outside air. The convection dev...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F38/30H01F27/29H02B13/035
CPCH01F27/292H01F38/30H02B13/035
Inventor 路继伟刘彦军张书琴张克选杨永欢张军吕敏柳少枫吕湘芸李晓培陈东
Owner HENAN PINGZHI HIGH VOLTAGE SWITCHGEAR
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