CN202523624U - On-post vacuum user demarcation load switch device - Google Patents
On-post vacuum user demarcation load switch device Download PDFInfo
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- CN202523624U CN202523624U CN2012201058275U CN201220105827U CN202523624U CN 202523624 U CN202523624 U CN 202523624U CN 2012201058275 U CN2012201058275 U CN 2012201058275U CN 201220105827 U CN201220105827 U CN 201220105827U CN 202523624 U CN202523624 U CN 202523624U
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- load switch
- housing
- switch device
- voltage transformer
- user demarcation
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Abstract
The utility model discloses an on-post vacuum user demarcation load switch device which includes a housing, and three inlet terminals and three outlet terminals which are arranged on the housing. The bottom of an inner cavity of the housing is provided with a voltage transformer which is used as a control circuit power supply. The voltage transformer is electrically connected with the inlet terminals. The inside of the load switch housing is filled with SF6 gas, and the load switch device is connected with an automatic gas supply device which can supply the SF6 gas. The voltage transformer is electrically connected with a larger capacity capacitor to supply a current with the switch opening and closing transient current reaching to the 17A peak value. In the on-post vacuum user demarcation load switch device, the voltage transformer (PT) which is originally arranged outside is arranged inside, so the installation is simple and the structure is beautiful. When the built-in voltage transformer is in the normal operation state, the voltage transformer can output a larger power rated current which satisfies a closing coil at the moment of load switch electric closing. The on-post vacuum user demarcation load switch device is safe and reliable, and can realize the electrical opening-closing function.
Description
Technical field
The utility model discloses a kind of pole vacuum user demarcation load switch device, divides by International Patent Classification (IPC) (IPC) to belong to vacuum user demarcation load switch manufacturing technology field.
Background technology
High pressure demarcation load switch, demarcation circuit breaker are important control of electric power system and protection equipment, and a switch connects ten million family, and it is a ring very important but weak in the power supply reliability.High pressure demarcation switch such as existing FZW28-12 (F), ZW20 (F) type, supporting automatic protection controller is for obtaining worker's operating power (current requirements 5A); The external high-power outdoor type voltage transformer of general employing is installed on the overhead transmission line, and equipment such as isolation switch must be installed for this reason; Not only increase equipment investment, and the equipment installation is inconvenient, not attractive in appearance, voltage transformer is exposed under the irradiation of UV sunlight throughout the year; Be in the malaria, rate of failure is high.In order to change above unfavorable factor, make into voltage transformer (being called for short PT) built-inly by external, reach and install simple and easyly, structure is attractive in appearance.But it is following that the present stage built-in PT of each producer transforms present situation:
1, utilize former casing to insert built-in PT, limited because of space in its case, clearance for insulation is not enough, will influence the switch withstand voltage level;
2, existing external PT (outdoor type) volume is big; Will be installed to it in the casing of demarcation switch, must increase switch case integral body, strengthen, the switch shortcoming of having transformed be: volume is big, heavy, not attractive in appearance; Destroy intrinsic external form, sealing difficulty increases;
3, realize that circuit control reaches the four remote control function of automation, reach remote signalling, remote measurement, remote regulating, the most important and will reach distant control function, can be on control centre's remote control circuit the breaking-closing operating of high-voltage switch gear.And realize that electronic breaking-closing operating, voltage transformer must supply with the electric current that switch divide-shut brake immediate current reaches 17A (peak value), and this current drain time＜300ms, this is that built-in PT is unapproachable.
Built-in guaranteeing shell excellent sealing grade (IP65) PT, and guarantee the security performance of the demarcation load switch of built-in PT formula, be the problem that those skilled in the art need solve.
Summary of the invention
To the deficiency of prior art, the utility model provides a kind of rational in infrastructure, safe and reliable pole vacuum user demarcation load switch device.
For achieving the above object, the utility model is realized through following technical scheme:
A kind of pole vacuum user demarcation load switch device; Comprise housing and on three inlet wire posts and three outlet column; Inlet wire post and outlet column extend into and form end of incoming cables and leading-out terminal in the housing; Above-mentioned end of incoming cables and leading-out terminal are switched on or switched off the realization switch protection through interrupter, and the intracavity bottom of described housing is provided with as control circuit power source voltage instrument transformer, and voltage transformer and end of incoming cables electrically connect.
Further, be filled with SF in the described on-load switch housing
6SF in the gas, this housing
6Gas is slightly larger than an atmospheric pressure, and housing is provided with the SF that communicates with inner chamber
6Air inlet, this air inlet link to each other with an automatic air supply device and make the SF in the on-load switch housing
6In the gas 1.01-1.04 barometric pressure range.
Further, described SF
6Air inlet and SF
6Gas tank links to each other, this SF
6Gas tank is arranged on outside the on-load switch housing.
Further, described voltage transformer electrically connects a large value capacitor to supply with the electric current that switch divide-shut brake immediate current reaches the 17A peak value.
Further, described voltage transformer is a silicon wafer alloy indoor type voltage transformer pt.
Further, be provided with the current zero sequence instrument transformer that electric current is sampled in the described housing, this current zero sequence instrument transformer is to be combined as a whole by current transformer and ZCT.
Further, described case top is provided with the electric pole that hitch is used to be installed in the 10KV overhead transmission line.
The utility model makes into voltage transformer (PT) built-inly by external, reaches and installs simple and easyly, and structure is attractive in appearance, and is installed in voltage transformer and is filled with SF
6The switch-box of gas is inner, and PT running environment is greatly improved:
1) do not shone by solar ultraviolet;
2) insulation of PT transfers SF6 good insulation gas to by air, can effectively prevent the corrosion failure of air salt fog, acid mist, prolongs the useful life of PT.
The built-in PT of the utility model only needs the output < power of 10W under normal operating condition.And must export high-powerly in the moment of on-load switch electric switch-on, and satisfying the rated current of closing coil, above two states can not make PT produce to heat up and influence the switch internal performance.
Description of drawings
Fig. 1 is the utility model outside drawing.
Fig. 2 is the utility model schematic internal view.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further:
Embodiment: see also Fig. 1 and Fig. 2; A kind of pole vacuum user demarcation load switch device; Comprise housing 1 and on three inlet wire posts 2 and three outlet column 3, inlet wire post and outlet column extend into and form end of incoming cables and leading-out terminal in the housing, above-mentioned end of incoming cables and leading-out terminal are switched on or switched off the realization switch protection through interrupter 4; The intracavity bottom of described housing 1 is provided with as control circuit power source voltage instrument transformer 5, and voltage transformer 5 electrically connects with the end of incoming cables.Be filled with SF in the on-load switch housing
6SF in the gas, this housing
6Gas is slightly larger than an atmospheric pressure, and housing is provided with the SF that communicates with inner chamber
6Air inlet 10, this air inlet link to each other with an automatic air supply device and make the SF in the on-load switch housing
6In the gas 1.01-1.04 barometric pressure range.SF
6Air inlet and SF
6Gas tank links to each other, this SF
6Gas tank is arranged on outside the on-load switch housing.Voltage transformer electrically connects a large value capacitor to supply with the electric current that switch divide-shut brake immediate current reaches the 17A peak value.Voltage transformer is a silicon wafer alloy indoor type voltage transformer pt.Be provided with the current zero sequence instrument transformer 6 that electric current is sampled in the housing, this current zero sequence instrument transformer is to be combined as a whole by current transformer and ZCT for running through the type instrument transformer, and above-mentioned current zero sequence instrument transformer can be installed on the inlet wire post in the housing.Housing 1 top is provided with the electric pole that hitch 11 is used to be installed in the 10KV overhead transmission line.
Among Fig. 1, there is isolation fracture 20 the demarcation load switch end of incoming cables, and logical interrupter 4 breaks off with leading-out terminal or connects, and leading-out terminal has vacuum interrupter 7, and there are hitch 11 usefulness at the demarcation load switch top and are installed on the electric pole.
The utility model built-in voltage instrument transformer (PT) adopts silicon wafer production unshakable in one's determination, and purpose is to reduce iron loss, increase load capacity, and built-in PT power reaches 100VA, peak power 380VA.(conventional P T design has only 30VA, peak value 114VA).
High pressure demarcation load switch, demarcation circuit breaker are electric power system most important control and protection equipment.A switch connects ten million family, and it is a ring very important but weak in the power supply reliability.Still belong to one type of electric equipment in the evolution.Be to build the strong electrical network of China, realize circuit control, the protection level reaches the four remote control function of automation, reaches remote signalling, remote measurement, remote regulating, the most important and will reach distant control function.Want can be on control centre's remote control circuit the breaking-closing operating of high-voltage switch gear.
High pressure demarcation switch such as FZW28-12 (F), ZW20 (F) type, supporting automatic protection controller.For obtaining worker's operating power (current requirements 5A), generally adopt external high-power outdoor type voltage transformer.Be installed on the overhead transmission line, equipment such as isolation switch must be installed for this reason, increased equipment investment, inconvenience, not attractive in appearance is installed, voltage transformer is exposed under the irradiation of UV sunlight throughout the year, is in the malaria, and rate of failure is high.In order to change above unfavorable factor, make into voltage transformer (PT) built-inly by external, reach and install simple and easyly, structure is attractive in appearance, and is installed in voltage transformer and is filled with SF
6The switch-box of gas is inner, and PT running environment is greatly improved.1) by solar ultraviolet irradiation, 2) insulation of PT transfers SF6 good insulation gas to by air, can effectively prevent the corrosion failure of air salt fog, acid mist, prolongs the useful life of PT.
But it is following that the present stage built-in PT of each producer transforms present situation:
External PT (outdoor type) volume is big, be installed to it in the casing of demarcation switch, must increase switch case integral body, strengthen; The switch shortcoming of having transformed is: volume is big, heavy, not attractive in appearance, destroys intrinsic external form, and sealing difficulty increases, and must consume the SF more than a times
6Gas (cost increase) or the like.
Do not changing former design overall dimensions, guaranteeing shell excellent sealing grade (IP65) and built-in, and PT can export than electric current greatly PT:
The built-in PT of the utility model only needs the output < power of 10W under normal operating condition.And must export high-powerly in the moment of on-load switch electric switch-on, and satisfying the rated current of closing coil, above two states can not make PT produce to heat up and influence the switch internal performance.
Demarcation switch requires built-in PT to possess moment and produces big electric current, powerful ability, and insulation property are reliable, and volume is little, could not increase the housing volume, guarantees sealing property, improves PT running environment and (changes SF into by air insulation
6Insulation in the gas).Supporting intelligent controller has been realized electronic divide-shut brake function, is a kind of real good high voltage load switch that can reach four remote control function.
Because this model on-load switch has kept former design external form; Sealing property is superior, and automaticity is high, can reach the automatically controlled closing function in a distant place; Be that power circuit is realized the indispensable switchgear of automation function, the scope of application is wide, economic benefit and obvious social benefit.
The utility model takes the lead in adopting the special-purpose PT of silicon wafer alloy indoor type, solves the automatic divide-shut brake power supply controlling problem of demarcation switch, and the PT output current of 5A can be provided.
In addition, the built-in PT demarcation switch of part of electric power online at present because design or the PT that adopted are unreasonable, is difficult to really realize the remote control divide-shut brake.
The above record is merely the embodiment that utilizes this origination techniques content, anyly is familiar with modification, the variation that this creation of this art utilization is done, and all belongs to the claim of this creation opinion, and is not limited to embodiment announcement person.
Claims (7)
1. pole vacuum user demarcation load switch device; It is characterized in that: comprise housing and on three inlet wire posts and three outlet column; Inlet wire post and outlet column extend into and form end of incoming cables and leading-out terminal in the housing; Above-mentioned end of incoming cables and leading-out terminal are switched on or switched off the realization switch protection through interrupter, and the intracavity bottom of described housing is provided with as control circuit power source voltage instrument transformer, and voltage transformer and end of incoming cables electrically connect.
2. pole vacuum user demarcation load switch device according to claim 1 is characterized in that: be filled with SF in the described on-load switch housing
6SF in the gas, this housing
6Gas is slightly larger than an atmospheric pressure, and housing is provided with the SF that communicates with inner chamber
6Air inlet, this air inlet link to each other with an automatic air supply device and make the SF in the on-load switch housing
6In the gas 1.01-1.04 barometric pressure range.
3. pole vacuum user demarcation load switch device according to claim 2 is characterized in that: described SF
6Air inlet and SF
6Gas tank links to each other, this SF
6Gas tank is arranged on outside the on-load switch housing.
4. pole vacuum user demarcation load switch device according to claim 1 is characterized in that: described voltage transformer electrically connects a large value capacitor to supply with the electric current that switch divide-shut brake immediate current reaches the 17A peak value.
5. pole vacuum user demarcation load switch device according to claim 1 is characterized in that: described voltage transformer is a silicon wafer alloy indoor type voltage transformer pt.
6. pole vacuum user demarcation load switch device according to claim 1; It is characterized in that: be provided with the current zero sequence instrument transformer that electric current is sampled in the described housing, this current zero sequence instrument transformer is to be combined as a whole by current transformer and ZCT.
7. according to each described pole vacuum user demarcation load switch device of claim 1 to 6, it is characterized in that: described case top is provided with the electric pole that hitch is used to be installed in the 10KV overhead transmission line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201058275U CN202523624U (en) | 2012-03-20 | 2012-03-20 | On-post vacuum user demarcation load switch device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201058275U CN202523624U (en) | 2012-03-20 | 2012-03-20 | On-post vacuum user demarcation load switch device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202523624U true CN202523624U (en) | 2012-11-07 |
Family
ID=47106560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201058275U Expired - Fee Related CN202523624U (en) | 2012-03-20 | 2012-03-20 | On-post vacuum user demarcation load switch device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202523624U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112233931A (en) * | 2020-09-23 | 2021-01-15 | 国网山东省电力公司潍坊供电公司 | Load switch device with PT (potential transformer) and installation construction method |
-
2012
- 2012-03-20 CN CN2012201058275U patent/CN202523624U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112233931A (en) * | 2020-09-23 | 2021-01-15 | 国网山东省电力公司潍坊供电公司 | Load switch device with PT (potential transformer) and installation construction method |
| CN112233931B (en) * | 2020-09-23 | 2023-09-29 | 国网山东省电力公司潍坊供电公司 | Load switch device with PT and installation construction method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 Termination date: 20160320 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |