CN202616648U - Metalclad withdraw switchgear anti-resonance voltage mutual inductor trolley - Google Patents
Metalclad withdraw switchgear anti-resonance voltage mutual inductor trolley Download PDFInfo
- Publication number
- CN202616648U CN202616648U CN 201220264659 CN201220264659U CN202616648U CN 202616648 U CN202616648 U CN 202616648U CN 201220264659 CN201220264659 CN 201220264659 CN 201220264659 U CN201220264659 U CN 201220264659U CN 202616648 U CN202616648 U CN 202616648U
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- China
- Prior art keywords
- mid
- dolly
- car body
- cabinet
- contact arm
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- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a metalclad withdraw switchgear anti-resonance voltage mutual inductor trolley, which comprises a mutual inductor cabinet metalclad withdraw trolley body (1), three high-voltage fuses (2), three grounding voltage mutual inductors (3) with full insulation structure and a set of full condition damper (4), the grounding voltage mutual inductors (3) with the full insulation structure are in primary side star-shaped connection, a neutral point end is connected with the high-voltage end (41) of the full condition damper (4), and the other ends of the grounding voltage mutual inductors (3) are respectively connected with the wiring terminals (52) of in-phase contact arms (5); the low-voltage end of the full condition damper (4) is connected with the grounding end of the metalclad withdraw trolley body. The trolley can prevent overburning of the mutual inductors and the fusing of the high-voltage fuses and the like during operation of capacitors and the voltage mutual inductors in a 10KV earth-free power grid, safe and reliable operation of the grid is better facilitated, related accidents are avoided, thereby obtaining great social and economical benefits.
Description
Technical field
The utility model relates to power equipment, particularly a kind of mid-cabinet dolly.
Background technology
The instrument transformer cabinet that the armouring type is removed the middle metal enclosed switchgear abbreviates mid-PT cabinet as; 3 semi-insulating grounding structure voltage transformers that adopt traditional star connection neutral ground are installed on the mid-dolly of mid-PT cabinet; Earth-free characteristic because of the 10KV electrical network; Often be in operation generation resonance between electric capacity in the electrical network and the voltage transformer and burn accidents such as instrument transformer, fusing high-tension fuse, cause economic loss in various degree.For fear of the at present effective method of the generation of above-mentioned fault is that 3 all insulation earthed voltage transformer stars of employing are joined, neutral point passes through the anti-resonance structure of 1 full operating mode damper ground connection; But because the inner space of the mid-dolly of former mid-PT cabinet is limit by structure; Its original structure can't be put 3 all insulation earthed voltage transformers and 1 full operating mode damper, can't realize that 3 all insulation earthed voltage transformers add the anti-resonance scheme of 1 full operating mode damper.
Summary of the invention
The purpose of the utility model provides and a kind ofly can realize that 3 all insulation earthed voltage transformers add the mid-cabinet antiresonance voltage transformer dolly of the anti-resonance scheme of combination of 1 full operating mode damper.
The technical solution of the utility model is: it comprises that having the armouring type removes the mid-dolly car body of instrument transformer cabinet of middle metal enclosed switchgear, 3 high-tension fuses, 3 all insulation grounding structure voltage transformers and 1 full operating mode damper; 3 high-tension fuses are installed in respectively on 3 contact arms of mid-dolly car body; One end of each high-tension fuse links to each other with the contact of contact arm respectively, the other end links to each other with the terminals of the contact arm other end respectively; Each all insulation grounding structure voltage transformer primary side Y-connection, neutral end link to each other with the high-pressure side of full operating mode damper, the other end links to each other with the terminals of homophase contact arm respectively, and the low-pressure end of full operating mode damper links to each other with the earth terminal of mid-dolly car body.
The technique effect of the utility model is: 3 semi-insulating grounding structure voltage transformers on the mid-dolly of mid-PT cabinet change to 3 all insulation earthed voltage transformers and increase by 1 full operating mode damper and connect into the anti-resonance scheme of combination that 3 all insulation ground connection PT add 1 full operating mode damper; It can prevent to be in operation between electric capacity and the voltage transformer in 10KV and the following ungrounded electric net work and produce resonance and burn frequent fusing high-tension fuse in accident such as instrument transformer, fusing high-tension fuse and the transient process; The safe and reliable operation that more helps electrical network; Avoided the generation of relevant accident; Bring considerable social benefit and economic benefit, it need not change the structure of former mid-PT cabinet, only needs to change each instrument transformer structure and high-tension fuse position on the mid-dolly; And set up 1 full operating mode damper; Have simple in structure, easy for installation, the advantage of anti-resonance.
Description of drawings
Fig. 1 is the utility model embodiment master TV structure figure;
Fig. 2 is the utility model embodiment side-looking structure chart.
Embodiment
Like Fig. 1, shown in Figure 2; It comprises that existing armouring type removes 2,3 all insulation grounding structure voltage transformers 3 of 1,3 high-tension fuses of the mid-dolly car body of instrument transformer cabinet and 1 full operating mode damper 4 of middle metal enclosed switchgear; 3 high-tension fuses 2 are installed in respectively on 3 contact arms 5 of mid-dolly car body 1; One end of each high-tension fuse 2 links to each other with the contact 51 of contact arm 5 respectively, the other end links to each other with the terminals 52 of contact arm 5 other ends respectively; Each all insulation grounding structure voltage transformer 3 primary side Y-connection, neutral end link to each other with the high-pressure side 41 of full operating mode damper 4, the other end links to each other with the terminals 52 of homophase contact arm 5 respectively, and the low-pressure end of full operating mode damper 4 links to each other with the earth terminal of mid-dolly car body 1.
Each contact arm 5 of mid-dolly car body 1 is made up of with the contact 51 that is installed in the other end of hollow insulated tube 53 through the hollow insulated tube 53 that insulator 6 is fixed on the mid-dolly car body 1 end respectively, and contact arm 5 terminals 52 are positioned at hollow insulated tube 53 end that is connected with insulator 6.Each high-tension fuse 2 is installed in respectively in the coupled contact arm that the connects 5 hollow insulated tubes 53.This high-tension fuse 2 mounting structures have been practiced thrift the space of dolly contact arm 5 belows, for full operating mode damper 4 and 3 all insulation grounding structure voltage transformers 3 of setting up provide installing space.
Be respectively equipped with the screw thread that matches on contact 51 and the hollow insulated tube 53 and link to each other through screw thread; Change and at first unload when new high-tension fuse 2 is installed contact 51; The high-tension fuse 2 that needs are changed takes out from hollow insulated tube 53; The high-tension fuse 2 that to newly change the again hollow insulated tube 53 of packing into is installed in contact 51 to screw on the hollow insulated tube 53 through screw thread then and gets final product.3 voltage transformers 3 are installed in the below of the coupled contact arm that connects 5 insulators 6 on the mid-dolly car body 1 respectively, and full operating mode damper 4 is installed on the base of each voltage transformer 3 and the mid-dolly car body 1 of contact arm 5 homonymies on the mid-dolly car body 1.
Full operating mode damper 4 is a harmonic-eliminating resistor.
The utility model is to change the anti-resonance scheme of combination that 3 all insulation ground connection PT add 1 full operating mode damper into by 3 semi-insulating grounding structure voltage transformers that former armouring type is removed on the mid-dolly of voltage transformer cabinet of middle metal enclosed switchgear, can play the anti-resonance effect of expection.And the high-tension fuse 2 that will originally be placed on contact arm 5 below socket connections changes into and is placed on contact arm 5 hollow insulated tubes 53 inside, practices thrift out the space of contact arm 5 belows so that 3 all insulation grounding structure voltage transformers 3 are installed and 1 full operating mode damper.
The back-out through contact 51 when mid-cabinet is pulled out of mid-dolly car body 1 is convenient with precession replacing high-tension fuse 2.
Claims (6)
1. mid-cabinet antiresonance voltage transformer dolly; It comprises that existing armouring type removes the mid-dolly car body of instrument transformer cabinet (1), 3 high-tension fuses (2), 3 all insulation grounding structure voltage transformers (3) and 1 full operating mode damper (4) of middle metal enclosed switchgear; It is characterized in that: 3 high-tension fuses (2) are installed in respectively on 3 contact arms (5) of mid-dolly car body (1); One end of each high-tension fuse (2) links to each other with the contact (51) of contact arm (5) respectively, the other end links to each other with the terminals (52) of contact arm (5) other end respectively; Each all insulation grounding structure voltage transformer (3) primary side Y-connection, neutral end link to each other with the high-pressure side (41) of full operating mode damper (4), the other end links to each other with the terminals (52) of homophase contact arm (5) respectively, and the low-pressure end of full operating mode damper (4) links to each other with the earth terminal of mid-dolly car body (1).
2. mid-cabinet antiresonance voltage transformer dolly as claimed in claim 1; The contact (51) that each contact arm (5) that it is characterized in that said mid-dolly car body (1) is fixed on the hollow insulated tube (53) on the mid-dolly car body (1) by an end through insulator (6) respectively and is installed in the other end of hollow insulated tube (53) constitutes, and contact arm (5) terminals (52) are positioned at hollow insulated tube (53) end that is connected with insulator (6).
3. mid-cabinet antiresonance voltage transformer dolly as claimed in claim 2 is characterized in that said each high-tension fuse (2) is installed in respectively in the coupled contact arm that connects (5) the hollow insulated tube (53).
4. mid-cabinet antiresonance voltage transformer dolly as claimed in claim 2 is characterized in that being respectively equipped with the screw thread that matches on said contact (51) and the hollow insulated tube (53) and linking to each other through screw thread.
5. mid-cabinet antiresonance voltage transformer dolly as claimed in claim 2; It is characterized in that said 3 voltage transformers (3) are installed on the mid-dolly car body (1) respectively and the below of its homophase contact arm (5) insulator (6), full operating mode damper (4) is installed in mid-dolly car body (1) and goes up on the base of each voltage transformer (3) and the mid-dolly car body of contact arm (5) homonymy (1).
6. mid-cabinet antiresonance voltage transformer dolly as claimed in claim 1 is characterized in that said full operating mode damper (4) is a harmonic-eliminating resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220264659 CN202616648U (en) | 2012-06-07 | 2012-06-07 | Metalclad withdraw switchgear anti-resonance voltage mutual inductor trolley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220264659 CN202616648U (en) | 2012-06-07 | 2012-06-07 | Metalclad withdraw switchgear anti-resonance voltage mutual inductor trolley |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202616648U true CN202616648U (en) | 2012-12-19 |
Family
ID=47350318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220264659 Expired - Fee Related CN202616648U (en) | 2012-06-07 | 2012-06-07 | Metalclad withdraw switchgear anti-resonance voltage mutual inductor trolley |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202616648U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108736364A (en) * | 2018-07-26 | 2018-11-02 | 国网山东省电力公司莱芜供电公司 | A kind of special anti-quick device for excising of resonance of switchgear voltage transformer |
| CN110165594A (en) * | 2019-05-29 | 2019-08-23 | 中国电力科学研究院有限公司 | Metering cabinet voltage transformer live replacing device and method |
| CN110323691A (en) * | 2019-07-18 | 2019-10-11 | 浙江华保电力科技股份有限公司 | A kind of safety-type 40.5kV bus PT cabinet |
-
2012
- 2012-06-07 CN CN 201220264659 patent/CN202616648U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108736364A (en) * | 2018-07-26 | 2018-11-02 | 国网山东省电力公司莱芜供电公司 | A kind of special anti-quick device for excising of resonance of switchgear voltage transformer |
| CN110165594A (en) * | 2019-05-29 | 2019-08-23 | 中国电力科学研究院有限公司 | Metering cabinet voltage transformer live replacing device and method |
| CN110165594B (en) * | 2019-05-29 | 2023-04-25 | 中国电力科学研究院有限公司 | Electrified replacement device and method for voltage transformer for metering cabinet |
| CN110323691A (en) * | 2019-07-18 | 2019-10-11 | 浙江华保电力科技股份有限公司 | A kind of safety-type 40.5kV bus PT cabinet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121219 Termination date: 20130607 |