CN109119237A - Heating removes tidal current transformer and metal enclosed switchgear - Google Patents
Heating removes tidal current transformer and metal enclosed switchgear Download PDFInfo
- Publication number
- CN109119237A CN109119237A CN201710493651.2A CN201710493651A CN109119237A CN 109119237 A CN109119237 A CN 109119237A CN 201710493651 A CN201710493651 A CN 201710493651A CN 109119237 A CN109119237 A CN 109119237A
- Authority
- CN
- China
- Prior art keywords
- terminal box
- current transformer
- coil
- electric heater
- heating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/28—Current transformers
- H01F38/30—Constructions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
- H01F27/292—Surface mounted devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Patch Boards (AREA)
- Control Of Resistance Heating (AREA)
Abstract
The present invention relates to a kind of heating except tidal current transformer and metal enclosed switchgear, moist in the terminal box to solve the problems, such as current transformer in the prior art.Technical solution is as follows, heating includes the bus cylinder being set on conductor and the actuating coil being set on bus cylinder except tidal current transformer, outer cover is covered on actuating coil, outer cover is equipped with the terminal box for accommodating the terminals into and out of line of actuating coil, it is equipped with electric heater in terminal box, the power supply coil for powering to electric heater is also arranged on the bus cylinder.Conductor forms first winding after being powered, power supply coil forms secondary winding and obtains induced current, it powers to electric heater, heater heats the air in terminal box, air themperature in terminal box increases, and reduces the relative air humidity in terminal box, and air and outside air in terminal box is promoted to generate convection current, to which the condensed water and water mist in terminal box be discharged, play the role of heating dehumidifying.
Description
Technical field
The present invention relates to a kind of heating to remove tidal current transformer and metal enclosed switchgear.
Background technique
In recent years, with the fast development of State Grid's cause, Cubicle Gas-Insulated Switchgear (including GIS/
HGIS/T-GCB demand) is growing day by day.It is equipped with current transformer (abbreviation CT) in existing GIS/HGIS/T-GCB substation,
Existing current transformer includes the hollow bus cylinder passed through for energized conductor, is arranged with active line on the bus cylinder
The outer cup of circle, actuating coil is equipped with outer cover, and the outer cover is fixed on bus cylinder, and the outer cover is equipped with terminal box, work
The terminals into and out of line for making coil are arranged in terminal box, and the terminal box is equipped with the convection current with outside air convection current and fills
It sets, the convection device prevents external large granular impurity from entering inside terminal box, and sealing is equipped with and wears for external cable on terminal box
The cable sheath tube crossed and connect with the terminals inside terminal box.
Although the terminal box of existing current transformer is closed, but the air inside terminal box and extraneous air
When by convection device convection current, it is difficult to avoid extraneous moisture from entering in terminal box, and in difference variation, in terminal box
Part condensed water can be generated.With the accumulation of time, moisture is more and more to influence whether the external output signal of current transformer
Accuracy influences reading of the backstage to equipment correct data, may cause mutual inductor short circuit when serious, the above problem occurs, only
The mode of interruption maintenance can be taken to solve.
Summary of the invention
The purpose of the present invention is to provide a kind of heating to remove tidal current transformer and metal enclosed switchgear, to solve
Moist problem in the terminal box of current transformer in the prior art.
Adopt the following technical scheme that solve the above problems, the heating in the present invention removes tidal current transformer: heating removes
Tidal current transformer includes the bus cylinder and the actuating coil being set on bus cylinder for being set on conductor, is worked
It is covered with outer cover on coil, outer cover is equipped with the terminal box for accommodating the terminals into and out of line of actuating coil, in terminal box
Equipped with electric heater, the power supply coil for powering to electric heater is also arranged on the bus cylinder.
The electric heater is resistance type heater.
The power supply coil and actuating coil are stacked along the axis of rotation direction of bus cylinder.
Metal enclosed switchgear in the present invention adopts the following technical scheme that: metal enclosed switchgear includes being used for shape
Tidal current transformer is removed at the bus and heating of conductor, heating includes for being set on conductor except tidal current transformer
Bus cylinder and the actuating coil being set on bus cylinder are covered with outer cover on actuating coil, and outer cover is equipped with for accommodating
The terminal box of the terminals into and out of line of actuating coil, terminal box is interior to be equipped with electric heater, is also arranged on the bus cylinder
Power supply coil for powering to electric heater.
The electric heater is resistance type heater.
The power supply coil and actuating coil are stacked along the axis of rotation direction of bus cylinder.
The beneficial effects of the present invention are: being powered in conductor, the first winding of current transformer is formed, power supply coil forms electricity
The secondary winding of current transformer obtains induced current, power supply coil under the action of the magnetic field of the generation of conductor in power supply coil
The electric current of interior generation is powered to electric heater, and heater generates heat and heats the air in terminal box, the air in terminal box
Temperature increases, and reduces the relative air humidity in terminal box, and air and outside air in terminal box is promoted to generate convection current, end
The steam of air in sub- case is discharged into external environment, to eliminate the condensed water and water mist in terminal box, is played heating and is removed
Tide effect.
Detailed description of the invention
Fig. 1 is the usage state diagram of one embodiment of the current transformer in the present invention.
In attached drawing, 1- conductor, 2- bus cylinder, 3- outer cover, 4- power supply coil, 5- actuating coil, 6- conducting wire, 7- electric heating
Device, 8- terminals, 9- terminal box, 10- cable sheath tube.
Specific embodiment
Embodiments of the present invention are described further with reference to the accompanying drawing.
The specific embodiment of current transformer in the present invention, as shown in Figure 1, current transformer includes leading for being set in
Bus cylinder 2 on body 1 and the actuating coil 5 being set on bus cylinder 2, are covered with outer cover 3 on actuating coil 5, on outer cover 3
Terminal box 9 equipped with the terminals 8 into and out of line for accommodating actuating coil 5, terminal box 9 is interior equipped with electric heater 7, described
The power supply coil 4 for powering to electric heater 7 is also arranged on bus cylinder 2.
In the present embodiment, the electric heater 7 is resistance type heater, and bus cylinder 2 is the cylinder being rotarily formed, power supply
Coil 4 and actuating coil 5 are wound around the outer surface of bus cylinder 3, power supply coil 4 and actuating coil 5 along the revolution of bus cylinder 2
Axis direction is stacked, and power supply coil 4 is connected by conducting wire 6 and electric heater 7.Power supply coil 4 is independently set with actuating coil 5
It is equipped with the independent control being conducive to the heating temperature of electric heater 7.In embodiment, the power supply coil 4 can also be along mother
The gyratory directions of spool body 2 are wound around on actuating coil 5 or power supply coil 4 is first wound around the outer surface of bus cylinder 2, so
Actuating coil 5 is wound around in power supply coil 4 afterwards；The resistance type heater also could alternatively be the electric heating of other heating methods
Device, such as electric pole type heater.
In use, being powered in conductor 1, the first winding of current transformer, power supply coil 4 and the equal shape of actuating coil 5 are formed
At the secondary winding of current transformer, under the action of the magnetic field of the generation of conductor 1, obtained in power supply coil 4 and actuating coil 5
Induced current, actuating coil 5 connect terminals 8 into and out of line, and external cable passes through cable sheath tube 10 and terminals 8 are connected,
The electric current that actuating coil 5 generates is for measuring, protecting, and the electric current generated in power supply coil 4 is powered to electric heater 7, this reality
It is 2000/1 that the power supply coil 4 in example, which is applied, relative to the no-load voltage ratio of conductor 1, that is to say if the electric current in conductor 1 is 2000A, supplies
Electric current in electric coil 4 is 1A, and by selecting the electric heater 7 of different resistance values to meet different heating demand, heater 7 generates heat
The air in terminal box 9 is measured and heats, the air themperature in terminal box 9 increases, and reduces the relative humidity of air, while promoting to hold
Air and outside air in sub- case 9 generate convection current, and the steam of the air in terminal box 9 is discharged into external environment, to disappear
Except the condensed water and water mist in terminal box 9, play the role of heating dehumidifying.
The specific embodiment of metal enclosed switchgear in the present invention, bus and heating including being used to form conductor 1
Except tidal current transformer, the bus is same as the prior art, and the heating is except tidal current transformer and in above-mentioned implementation
Narration was done in example, which is not described herein again.
Claims (6)
1. heating removes tidal current transformer, including the bus cylinder for being set on conductor and it is set on bus cylinder
Actuating coil, outer cover is covered on actuating coil, and outer cover is equipped with the end for accommodating the terminals into and out of line of actuating coil
Sub- case, it is characterised in that: be equipped with electric heater in terminal box, be also arranged on the bus cylinder for powering to electric heater
Power supply coil.
2. heating according to claim 1 removes tidal current transformer, it is characterised in that: the electric heater is resistance-type
Heater.
3. heating according to claim 1 or 2 removes tidal current transformer, it is characterised in that: the power supply coil and work
Make coil to be stacked along the axis of rotation direction of bus cylinder.
4. metal enclosed switchgear heats dehumidifying including the bus for being used to form conductor and heating except tidal current transformer
Formula current transformer includes bus cylinder for being set on conductor and the actuating coil being set on bus cylinder, active line
Outer cover is covered on circle, outer cover is equipped with the terminal box for accommodating the terminals into and out of line of actuating coil, and feature exists
In: it is equipped with electric heater in terminal box, the power supply coil for powering to electric heater is also arranged on the bus cylinder.
5. metal enclosed switchgear according to claim 4, it is characterised in that: the electric heater is resistance-type heating
Device.
6. metal enclosed switchgear according to claim 4 or 5, it is characterised in that: the power supply coil and active line
Circle is stacked along the axis of rotation direction of bus cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710493651.2A CN109119237B (en) | 2017-06-26 | 2017-06-26 | Heating and dehumidifying type current transformer and metal-enclosed switchgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710493651.2A CN109119237B (en) | 2017-06-26 | 2017-06-26 | Heating and dehumidifying type current transformer and metal-enclosed switchgear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109119237A true CN109119237A (en) | 2019-01-01 |
| CN109119237B CN109119237B (en) | 2021-09-07 |
Family
ID=64732502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710493651.2A Active CN109119237B (en) | 2017-06-26 | 2017-06-26 | Heating and dehumidifying type current transformer and metal-enclosed switchgear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109119237B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2586234Y (en) * | 2002-12-09 | 2003-11-12 | 西安维能电气有限公司 | Combined indoor high voltage current mutual inductor |
| CN201036153Y (en) * | 2007-04-30 | 2008-03-12 | 大连北方互感器有限公司 | Backbone type bus current mutual inductor |
| CN102222558A (en) * | 2010-04-14 | 2011-10-19 | 李岩松 | Optical current mutual inductor and optoelectronic information processor thereof |
| CN202134398U (en) * | 2011-04-13 | 2012-02-01 | 山东泰开高压开关有限公司 | External current transformer of geographic information system GIS |
| CN202601401U (en) * | 2012-06-25 | 2012-12-12 | 人民电器集团有限公司 | Bus-type current transformer |
| CN202711943U (en) * | 2012-08-24 | 2013-01-30 | 宁夏电力公司电力科学研究院 | Built-in heating device of sulfur hexafluoride current transformer |
| CN202926407U (en) * | 2012-09-04 | 2013-05-08 | 周登荣 | Variable frequency heating device used for power generation |
| CN203165657U (en) * | 2013-01-31 | 2013-08-28 | 浙江天际互感器有限公司 | Dry-type compound insulation high-voltage current mutual inductor |
| CN104112629A (en) * | 2014-06-30 | 2014-10-22 | 国家电网公司 | Device for preventing reverse charging of secondary side of voltage transformer |
| CN204029599U (en) * | 2014-08-25 | 2014-12-17 | 浙江北互互感器有限公司 | A kind of dry type compound insulation current transformer |
| WO2016004999A1 (en) * | 2014-07-10 | 2016-01-14 | Abb Technology Ag | Electrical device comprising a gas-insulated apparatus, in particular a gas-insulated transformer or reactor |
| CN208848740U (en) * | 2018-10-12 | 2019-05-10 | 上海劲兆互感器有限公司 | A kind of pin configuration improving combined voltage transformer electric field |
-
2017
- 2017-06-26 CN CN201710493651.2A patent/CN109119237B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2586234Y (en) * | 2002-12-09 | 2003-11-12 | 西安维能电气有限公司 | Combined indoor high voltage current mutual inductor |
| CN201036153Y (en) * | 2007-04-30 | 2008-03-12 | 大连北方互感器有限公司 | Backbone type bus current mutual inductor |
| CN102222558A (en) * | 2010-04-14 | 2011-10-19 | 李岩松 | Optical current mutual inductor and optoelectronic information processor thereof |
| CN202134398U (en) * | 2011-04-13 | 2012-02-01 | 山东泰开高压开关有限公司 | External current transformer of geographic information system GIS |
| CN202601401U (en) * | 2012-06-25 | 2012-12-12 | 人民电器集团有限公司 | Bus-type current transformer |
| CN202711943U (en) * | 2012-08-24 | 2013-01-30 | 宁夏电力公司电力科学研究院 | Built-in heating device of sulfur hexafluoride current transformer |
| CN202926407U (en) * | 2012-09-04 | 2013-05-08 | 周登荣 | Variable frequency heating device used for power generation |
| CN203165657U (en) * | 2013-01-31 | 2013-08-28 | 浙江天际互感器有限公司 | Dry-type compound insulation high-voltage current mutual inductor |
| CN104112629A (en) * | 2014-06-30 | 2014-10-22 | 国家电网公司 | Device for preventing reverse charging of secondary side of voltage transformer |
| WO2016004999A1 (en) * | 2014-07-10 | 2016-01-14 | Abb Technology Ag | Electrical device comprising a gas-insulated apparatus, in particular a gas-insulated transformer or reactor |
| CN204029599U (en) * | 2014-08-25 | 2014-12-17 | 浙江北互互感器有限公司 | A kind of dry type compound insulation current transformer |
| CN208848740U (en) * | 2018-10-12 | 2019-05-10 | 上海劲兆互感器有限公司 | A kind of pin configuration improving combined voltage transformer electric field |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109119237B (en) | 2021-09-07 |
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