CN111029913A - Busbar cross structure of direct current circuit breaker - Google Patents
Busbar cross structure of direct current circuit breaker Download PDFInfo
- Publication number
- CN111029913A CN111029913A CN201911132520.7A CN201911132520A CN111029913A CN 111029913 A CN111029913 A CN 111029913A CN 201911132520 A CN201911132520 A CN 201911132520A CN 111029913 A CN111029913 A CN 111029913A
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- CN
- China
- Prior art keywords
- wall bushing
- busbar
- circuit breaker
- cross structure
- direct current
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/20—Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/20—Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards
- H02B1/207—Cross-bar layouts
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
The invention provides a busbar crossing structure of a direct current breaker. The utility model provides a female intersection structure that arranges of direct current circuit breaker, wherein, includes that first female arranging, second are female arranges, keeps apart earthing switch, high-speed switch, first wall bushing, second wall bushing and third wall bushing, the second is female to wear out the second wall bushing after buckling, first female arranging connects gradually keep apart earthing switch, high-speed switch back, again passes in proper order third wall bushing and first wall bushing. According to the invention, in the flexible direct-current distribution network engineering, the two direct-current circuit breakers arranged on the positive electrode and the negative electrode can be directly connected front and back, and the positive electrode and the negative electrode do not need to be exchanged by an additional cabinet body or a device, so that the structure of the whole flexible direct-current distribution network is simplified.
Description
Technical Field
The invention relates to the technical field of power equipment, in particular to a busbar crossing structure of a direct current breaker.
Background
With the rapid development of distributed power supplies and different load grid connection, a multi-end flexible direct current power transmission and distribution technology is applied, at present, in a flexible direct current distribution network project, a screen cabinet structure is mostly adopted by a direct current circuit breaker, the direct current circuit breaker is key equipment for connecting a plurality of converter stations into a network, when a local fault occurs in the power grid, the fault clearing and isolating effects are achieved, the stability and flexibility of the direct current power grid can be improved through the application of the direct current circuit breaker, the power supply reliability is improved, and the problem that the whole network is shut down due to the local fault of the power grid can be effectively avoided. However, because the positive and negative poles exist in the dc circuit, when the dc circuit breaker is installed on the positive and negative poles, two dc circuit breaker cabinets are arranged in front of and behind the dc circuit, the positive and negative poles are installed on the positive pole after entering the first dc circuit breaker cabinet, and a cabinet is needed to be installed to exchange the positive and negative poles after the positive and negative poles flow out of the first dc circuit breaker cabinet, and the positive and negative poles at the exchanged positions are connected to the second dc circuit breaker cabinet, and the dc circuit breaker is installed on the negative pole in the cabinet.
Disclosure of Invention
The invention aims to overcome the defects of large number of cabinet bodies and complex structure when a direct current breaker is installed in the conventional flexible direct current distribution network engineering, and provides a busbar crossing structure of the direct current breaker. According to the invention, in the flexible direct-current distribution network engineering, the two direct-current circuit breakers arranged on the positive electrode and the negative electrode can be directly connected front and back, and the positive electrode and the negative electrode do not need to be exchanged by an additional cabinet body or a device, so that the structure of the whole flexible direct-current distribution network is simplified.
In order to solve the technical problems, the invention adopts the technical scheme that: the utility model provides a female intersection structure that arranges of direct current circuit breaker, wherein, includes that first female arranging, second are female arranges, keeps apart earthing switch, high-speed switch, first wall bushing, second wall bushing and third wall bushing, the second is female to wear out the second wall bushing after buckling, first female arranging connects gradually keep apart earthing switch, high-speed switch back, again passes in proper order third wall bushing and first wall bushing. In the technical scheme, an anode is connected with a first bus bar, a cathode is connected with a second bus bar, the cathode flows into the second bus bar and penetrates out of a second wall bushing through the bending of the second bus bar, the anode is connected with the first bus bar, then an earthing switch and a high-speed switch are sequentially isolated, the anode penetrates out of the first wall bushing after passing through a third wall bushing, then a bus bar crossing structure of a second direct current breaker is connected at the positions of the first wall bushing and the second wall bushing, the anode and the cathode which are connected at the moment are switched, the first bus bar of the bus bar crossing structure of the second direct current breaker is the cathode, the bus bar connected into the second bus bar is the anode, the first bus bar of the bus bar crossing structure of the second direct current breaker is sequentially connected with the earthing switch and the high-speed switch, the cathode penetrates out of the first wall bushing after passing through the third wall bushing, the anode is connected into the second bus bar and penetrates out of the second wall bushing after being bent, therefore, the positive and negative electrodes penetrate through the bus bar crossing structure of the two direct current circuit breakers in the front and back directions, a cabinet body does not need to be installed between the bus bar crossing structures of the two direct current circuit breakers to exchange the positive and negative electrodes, the internal structure of the direct current circuit breaker containing the bus bar crossing structure can be designed completely the same, and the positive and negative electrodes can be conveniently and completely interchanged for use.
Further, the first wall bushing and the second wall bushing are parallel. And mounting flanges are arranged outside the first wall bushing and the second wall bushing. According to the technical scheme, the mounting flange is used for parallelly and fixedly connecting the first wall bushing with the second wall bushing in parallel, so that the first wall bushing and the second wall bushing are prevented from loosening on the wall surface of the screen cabinet when the busbar cross structure of the direct current circuit breaker is arranged inside the screen cabinet.
Furthermore, one end of the first busbar penetrating through the first wall bushing and one end of the second busbar far away from the second wall bushing are on the same straight line. The second busbar penetrates through the second wall bushing and is positioned on the same straight line with one end, far away from the first wall bushing, of the first busbar. When the busbar cross structure of the direct current circuit breaker is arranged inside the screen cabinet, the inlet and outlet ends of the first busbar and the second busbar are mutually arranged on the same straight line, so that the connection of the anode and the cathode between the busbar cross structure screen cabinets of the two direct current circuit breakers is facilitated, the length of the first busbar and the second busbar is reduced, and materials are saved.
Furthermore, the first busbar and the second busbar are formed by connecting a plurality of copper bars through connecting cover plates. The connecting cover plate is provided with a connecting hole, and a connecting nut is arranged on the connecting hole. And a gasket is arranged between the connecting nut and the connecting hole.
Furthermore, the isolation grounding switch and the second wall bushing are on the same plane. The high-speed switch is located below the second wall bushing, and the first busbar is connected with the high-speed switch and then penetrates into the third wall bushing from the lower portion of the second busbar. The high-speed switch connected below the second wall bushing and connected with the first busbar is staggered with the first busbar, and the conflict of cross lines between the two busbars is avoided.
Compared with the prior art, the invention has the beneficial effects that:
according to the alternating-current circuit breaker, the first busbar and the second busbar are matched in a staggered mode, the positive electrode and the negative electrode are exchanged in the direct-current circuit breaker, and phase inversion of the positive electrode and the negative electrode is achieved without an additional cabinet body; the second wall bushing is in staggered fit with the second busbar through the first busbar, so that the internal structures of the direct-current breaker panel cabinets arranged on the positive and negative electrodes can be completely the same and can be interchanged; the technical scheme of the invention has simple structure, simple processing technology and easy realization; through setting up high-speed switch in the below of second wall bushing to buckle first female arranging, make first female arranging and second arrange when alternately, the cross line in the middle of two female arranging can not take place the conflict.
Drawings
Fig. 1 is a schematic structural diagram of a busbar cross structure of a dc circuit breaker according to the present invention.
Fig. 2 is a front projection view along direction a in fig. 1.
Fig. 3 is a schematic structural diagram of a busbar crossing structure of two dc breakers according to the present invention.
The graphic symbols are illustrated as follows:
1-a second bus bar, 2-a first bus bar, 3-an isolation grounding switch, 4-a high-speed switch, 5-a third wall bushing, 6-a second wall bushing, 7-a first wall bushing, 8-an installation flange, 9-an anode input end, 10 a cathode input end, 11-an anode output end, and 12-a cathode output end.
Detailed Description
The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.
Example 1
Fig. 1 to 2 show a first embodiment of a busbar cross structure of a dc circuit breaker according to the present invention. The utility model provides a female intersection structure that arranges of direct current circuit breaker, includes that first female row 2, the female 1 of second, isolation earthing switch 3, high-speed switch 4, first wall bushing 7, second wall bushing 6 and third wall bushing 5, the female 1 of second is buckled and is passed second wall bushing 6, and first female row 2 connects gradually behind isolation earthing switch 3, the high-speed switch 4, passes third wall bushing 5 and first wall bushing 7 in proper order.
The first wall bushing 7 and the second wall bushing 6 are parallel in parallel, and mounting flanges 8 are arranged outside the first wall bushing 7 and the second wall bushing 6. One end of the first busbar 2 penetrating through the first wall bushing 7 and one end of the second busbar 1 far away from the second wall bushing 6 are on the same straight line. One end of the second busbar 1 penetrating through the second wall bushing 6 and one end of the first busbar 2 far away from the first wall bushing 7 are on the same straight line.
In addition, the first busbar 2 and the second busbar 1 are formed by connecting a plurality of copper bars through a connecting cover plate. The connecting cover plate is provided with a connecting hole, and a connecting nut is arranged on the connecting hole. A gasket is arranged between the connecting nut and the connecting hole. The isolation grounding switch 3 and the second wall bushing 6 are on the same plane. The high-speed switch 4 is positioned below the second wall bushing 6, and the first busbar 2 is connected with the high-speed switch 4 and then penetrates into the third wall bushing 5 from the lower part of the second busbar 1.
The working principle of the embodiment is as follows: the positive pole inserts first female row 2, and female 1 that arranges of second of negative pole access, and the positive pole inserts female 1 of second and connects gradually behind going on isolation earthing switch 3, high-speed switch 4, wears out first wall bushing 7 after passing third wall bushing 5 again, and the negative pole is directly inserted first female row 2 and is buckled back and is worn out second wall bushing 6, and the positive negative pole has exchanged the position that originally got into this embodiment after flowing out this embodiment.
Example 2
The present embodiment is similar to embodiment 1, except that in the present embodiment, the busbar crossing structure of two dc breakers is connected back and forth, in the busbar crossing structure of the first dc breaker, the positive electrode is connected to the first busbar 2, the negative electrode is connected to the second busbar 1, the positive electrode is connected to the isolation grounding switch 3 and the high-speed switch 4 which sequentially flow through the busbar crossing structure of the first dc breaker, then sequentially pass through the third wall bushing 5 and the first wall bushing 7, the negative electrode is connected to the second busbar 1, and after being bent, the negative electrode flows out of the second wall bushing 6, the positive electrode and the negative electrode at the switching position again flow into the busbar crossing structure of the second dc breaker, the negative electrode is connected to the first busbar 2 of the busbar crossing structure of the second dc breaker, and after being connected to the isolation grounding switch 3 and the high-speed switch 4 which sequentially flow through the busbar crossing structure of the second dc breaker, and then sequentially passes through a third wall bushing 5 and a first wall bushing 7, the positive electrode is connected with a second busbar 1 of a busbar crossing structure of a second direct current breaker, and the second busbar 6 flows out after being bent. Thus, the positive pole and the negative pole are provided with the direct current circuit breakers, the positive pole and the negative pole exchange positions twice in a bus bar crossing structure of the two direct current circuit breakers, so that the positive pole incoming end 9 and the positive pole outgoing end 11 are in the same direction, the negative pole incoming end 10 and the negative pole outgoing end 12 are in the same direction, the two direct current circuit breakers can be directly connected through respective bus bar crossing structures, the bus bar crossing structure enables the internal structures of the direct current circuit breakers to be completely the same, and the direct current circuit breakers can be used by being changed from front to back.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The utility model provides a female intersection structure that arranges of direct current circuit breaker which characterized in that: the wall bushing structure comprises a first busbar, a second busbar, an isolation grounding switch, a high-speed switch, a first wall bushing, a second wall bushing and a third wall bushing, wherein the second busbar penetrates out of the second wall bushing after being bent, the first busbar is sequentially connected with the isolation grounding switch and the high-speed switch, and then sequentially penetrates through the third wall bushing and the first wall bushing.
2. The busbar cross structure of the dc circuit breaker according to claim 1, wherein: the first wall bushing and the second wall bushing are parallel.
3. The busbar cross structure of the dc circuit breaker according to claim 2, wherein: and mounting flanges are arranged outside the first wall bushing and the second wall bushing.
4. The busbar cross structure of the dc circuit breaker according to claim 2, wherein: one end of the first busbar penetrating through the first wall bushing and one end of the second busbar far away from the second wall bushing are on the same straight line.
5. The busbar cross structure of the dc circuit breaker according to claim 3, wherein: the second busbar penetrates through the second wall bushing and is positioned on the same straight line with one end, far away from the first wall bushing, of the first busbar.
6. The busbar cross structure of the dc circuit breaker according to claim 4, wherein: the first busbar and the second busbar are formed by connecting a plurality of copper bars through connecting cover plates.
7. The busbar cross structure of the dc circuit breaker according to claim 5, wherein: the connecting cover plate is provided with a connecting hole, and a connecting nut is arranged on the connecting hole.
8. The busbar cross structure of the dc circuit breaker according to claim 6, wherein: and a gasket is arranged between the connecting nut and the connecting hole.
9. The busbar cross structure of the dc circuit breaker according to claim 4, wherein: the isolation grounding switch, the second wall bushing and the first wall bushing are on the same plane.
10. The busbar cross structure of the dc circuit breaker according to claim 9, wherein: the high-speed switch is located below the second wall bushing, and the first busbar is connected with the high-speed switch and then penetrates into the third wall bushing from the lower portion of the second busbar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911132520.7A CN111029913B (en) | 2019-11-19 | 2019-11-19 | Busbar cross structure of direct current circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911132520.7A CN111029913B (en) | 2019-11-19 | 2019-11-19 | Busbar cross structure of direct current circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111029913A true CN111029913A (en) | 2020-04-17 |
| CN111029913B CN111029913B (en) | 2021-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911132520.7A Active CN111029913B (en) | 2019-11-19 | 2019-11-19 | Busbar cross structure of direct current circuit breaker |
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| CN (1) | CN111029913B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020118560A1 (en) * | 2000-09-20 | 2002-08-29 | Sayeed Ahmed | Substrate-level DC bus design to reduce module inductance |
| CN101409429A (en) * | 2008-12-04 | 2009-04-15 | 天水长城开关厂有限公司 | Method for improving multi-slice rectangle conductor current-carrying capacity and large current-carrying rectangle conductor |
| CN203278145U (en) * | 2013-06-04 | 2013-11-06 | 辽宁北辰电力设备有限公司 | Commutation device for DC excitation enclosed busbar |
| CN204118479U (en) * | 2014-08-29 | 2015-01-21 | 深圳科士达科技股份有限公司 | DC power distribution cabinet |
| CN105207159A (en) * | 2015-10-21 | 2015-12-30 | 中铁第一勘察设计院集团有限公司 | AC anti-ice-melting device for vehicle-mounted contact network of electrified railway |
| RU2624907C1 (en) * | 2016-05-24 | 2017-07-10 | Федеральное государственное автономное образовательное учреждение высшего образования "Национальный исследовательский Томский политехнический университет" | Device for maximum current protection of electrical installation on reed switches |
| CN107086761A (en) * | 2017-05-16 | 2017-08-22 | 常州博瑞电力自动化设备有限公司 | A kind of two-way through-flow main branch power cell of dc circuit breaker |
| CN207134659U (en) * | 2017-09-07 | 2018-03-23 | 河南省信息咨询设计研究有限公司 | Type direct-current power distribution cabinet is had both in a kind of single and double line input |
| WO2018105011A1 (en) * | 2016-12-05 | 2018-06-14 | 東芝三菱電機産業システム株式会社 | Dc input board |
-
2019
- 2019-11-19 CN CN201911132520.7A patent/CN111029913B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020118560A1 (en) * | 2000-09-20 | 2002-08-29 | Sayeed Ahmed | Substrate-level DC bus design to reduce module inductance |
| CN101409429A (en) * | 2008-12-04 | 2009-04-15 | 天水长城开关厂有限公司 | Method for improving multi-slice rectangle conductor current-carrying capacity and large current-carrying rectangle conductor |
| CN203278145U (en) * | 2013-06-04 | 2013-11-06 | 辽宁北辰电力设备有限公司 | Commutation device for DC excitation enclosed busbar |
| CN204118479U (en) * | 2014-08-29 | 2015-01-21 | 深圳科士达科技股份有限公司 | DC power distribution cabinet |
| CN105207159A (en) * | 2015-10-21 | 2015-12-30 | 中铁第一勘察设计院集团有限公司 | AC anti-ice-melting device for vehicle-mounted contact network of electrified railway |
| RU2624907C1 (en) * | 2016-05-24 | 2017-07-10 | Федеральное государственное автономное образовательное учреждение высшего образования "Национальный исследовательский Томский политехнический университет" | Device for maximum current protection of electrical installation on reed switches |
| WO2018105011A1 (en) * | 2016-12-05 | 2018-06-14 | 東芝三菱電機産業システム株式会社 | Dc input board |
| CN107086761A (en) * | 2017-05-16 | 2017-08-22 | 常州博瑞电力自动化设备有限公司 | A kind of two-way through-flow main branch power cell of dc circuit breaker |
| CN207134659U (en) * | 2017-09-07 | 2018-03-23 | 河南省信息咨询设计研究有限公司 | Type direct-current power distribution cabinet is had both in a kind of single and double line input |
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| Publication number | Publication date |
|---|---|
| CN111029913B (en) | 2021-03-02 |
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