CN107069444B - Low-voltage contact distribution box with bypass bus - Google Patents
Low-voltage contact distribution box with bypass bus Download PDFInfo
- Publication number
- CN107069444B CN107069444B CN201710454703.5A CN201710454703A CN107069444B CN 107069444 B CN107069444 B CN 107069444B CN 201710454703 A CN201710454703 A CN 201710454703A CN 107069444 B CN107069444 B CN 107069444B
- Authority
- CN
- China
- Prior art keywords
- bypass
- low
- distribution
- box
- voltage
- 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.)
- Active
Links
Classifications
-
- 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
- H02B1/24—Circuit arrangements for boards or switchyards
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Distribution Board (AREA)
Abstract
The invention discloses a low-voltage contact distribution box with bypass buses. The low-voltage junction box with the bypass bus comprises two low-voltage distribution boxes which are symmetrically arranged through two circuits, wherein the two low-voltage distribution boxes are connected through a junction device, each low-voltage distribution box comprises a low-voltage distribution main box and a bypass switch box, and the low-voltage distribution main box is electrically connected with the bypass switch box through a junction switch and a distribution double-throw switch. According to the invention, the two low-voltage distribution boxes are connected through the connecting device, so that when the switch in the distribution box is overhauled, the distribution box is replaced and other operations, power conversion and supply can be realized through the bypass bus, and the connecting device is provided with the electric interlock, so that the two distribution transformers are ensured not to run in parallel.
Description
Technical Field
The invention relates to the field of distribution boxes, in particular to a low-voltage bypass bus tie distribution box.
Background
At present, the connection of low-voltage distribution lines commonly adopts the modes of direct connection of buses of two transformers and connection of the tail ends of low-voltage feeder lines, but the two distribution connection modes have more constraint conditions, and the actual connection functions are not strong, for example, the direct connection of buses of the distribution boxes (cabinets) is adopted, and when the switch in the distribution boxes (cabinets) is overhauled, the operation of replacing the distribution boxes (cabinets) and the like can not be realized; the low-voltage feeder terminal connection mode is adopted, the power supply is switched to operate a plurality of switches every time, the distribution range of the connection switches is wide because of the divergence of the line trend, the operation is inconvenient, the misoperation is easy to occur, and the operation risk is extremely high.
Disclosure of Invention
The invention aims to provide a low-voltage bypass bus tie distribution box for transferring power when the switch in the distribution box is overhauled, the distribution box is replaced and other operations are realized.
In order to achieve the purpose, the low-voltage bypass bus tie distribution box comprises two low-voltage distribution boxes which are symmetrically arranged in a circuit mode, wherein the two low-voltage distribution boxes are in tie connection through a tie device, the low-voltage distribution boxes comprise a low-voltage distribution main box and a bypass switch box, and the low-voltage distribution main box is electrically connected with the bypass switch box through a tie switch and a distribution double-throw switch. According to the invention, the two low-voltage distribution boxes are connected through the connecting device, so that when the switch in the distribution box is overhauled, the distribution box is replaced and other operations, power conversion and supply can be realized through the bypass bus, and the connecting device is provided with the electric interlock, so that the two distribution transformers are ensured not to run in parallel.
In some embodiments, the low voltage distribution header includes a distribution header switch, a distribution hard bus, and a feeder circuit breaker electrically coupled in sequence, the feeder circuit breaker electrically coupled to the bypass switch box.
In some embodiments, the bypass switch box includes a tie breaker, a bypass breaker, and a bypass hard bus electrically coupled to the tie breaker and the bypass breaker, respectively, the tie breaker electrically coupled to the tie breaker, and the bypass breaker electrically coupled to the distribution double throw gate. The interconnecting switch is arranged in the bypass switch box in a concentrated mode, switching operation is safe and fast, and power supply reliability is improved to the greatest extent.
In some embodiments, the tie line neutral turns on the bypass hard bus.
In some embodiments, the tie device is a three-phase four-wire tie line, and the tie device is provided with an electrical interlock. And an electrical interlock is arranged to ensure that the two distribution transformers do not operate in parallel.
In some embodiments, the power distribution double throw knife switch is a twelve-wire power distribution double throw knife switch that electrically couples the feeder circuit breaker and the bypass circuit breaker, respectively, and draws out the low voltage rail.
In some embodiments, a ground screen is provided at the end of each low voltage dry wire, and the ground screen has a ground resistance of no more than four ohms. The work of replacing the low-voltage distribution box can cause the zero line to be separated from the grounding grid, so that the grounding grid is additionally arranged at the tail end of each low-voltage trunk line, and the grounding resistance is not more than four ohms.
In some embodiments, the tie breaker, distribution double throw breaker, and bypass breaker are arranged in layers and are hard isolated. The circuit breakers and the disconnecting link in the bypass switch box are arranged in a layered mode and are hard to isolate, and feeder lines are ensured not to be powered off when the bypass circuit breakers are overhauled.
In some embodiments, the bypass switch box is provided with an emergency power access circuit breaker electrically coupled to the bypass hard bus. The emergency power supply access breaker is additionally arranged, the emergency power generation car rapid access port is additionally arranged, and the rapid access of the emergency power supply is met.
In some embodiments, the low voltage distribution header is provided with a service grounding post electrically coupled to the distribution hard bus. And the overhaul grounding column is arranged, so that the electric overhaul is convenient, and the electric overhaul grounding column is grounded in the distribution box.
The beneficial effects of the invention are as follows: the low-voltage bypass bus tie distribution box aims at the existing distribution box switch equipment and the electrical principle, when the switch in the distribution box is overhauled, the distribution box can be replaced, power supply can be realized through the bypass bus, the tie switch is intensively arranged in the distribution box, switching operation is safe and rapid, and power supply reliability is improved to the greatest extent.
Drawings
Fig. 1 is a schematic diagram of the circuit structure of the low-voltage bypass bus tie distribution box of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings.
As shown in fig. 1, the low-voltage junction box with bypass bus comprises two low-voltage distribution boxes AB which are symmetrically arranged in a circuit manner, wherein the two low-voltage distribution boxes AB are connected through a junction device 10, each low-voltage distribution box AB comprises a low-voltage distribution main box Z and a bypass switch box P, and the low-voltage distribution main box Z and the bypass switch box P are electrically connected through a junction switch 4 and a distribution double-throw switch 5.
The low-voltage distribution main box Z comprises a distribution main knife switch 1, a distribution hard bus 2 and a feeder circuit breaker 3 which are electrically connected in sequence, and the feeder circuit breaker 3 is electrically connected with a bypass switch box P.
The bypass switch box P comprises a communication breaker 6, a bypass breaker 8 and a bypass hard bus 9, wherein the bypass hard bus 9 is respectively and electrically connected with the communication breaker 6 and the bypass breaker 8, the communication breaker 6 is electrically connected with the communication disconnecting link 4, and the bypass breaker 8 is electrically connected with the distribution double-throw gate 5.
The tie line neutral line connects the bypass hard bus 9.
The interconnecting device 10 is a three-phase four-wire interconnecting line, and the interconnecting device 10 is provided with an electrical interlock.
The distribution double-throw disconnecting link 5 is a twelve-line distribution double-throw disconnecting link, and the distribution double-throw disconnecting link 5 is electrically connected with the feeder circuit breaker 3 and the bypass circuit breaker 8 respectively and leads out a low-voltage dry line 12.
The end of each low-voltage trunk line 12 is provided with a grounding grid, and the grounding resistance of the grounding grid is not more than four ohms.
The tie breaker 4, the tie breaker 6, the distribution double throw breaker 5 and the bypass breaker 8 are arranged in layers and are hard-isolated.
The bypass switch box P is provided with an emergency power supply access breaker 7, and the emergency power supply access breaker 7 is electrically connected with a bypass hard bus 9.
The low-voltage distribution main box Z is provided with an overhaul grounding column 11, and the overhaul grounding column 11 is electrically connected with the distribution hard bus 2.
The power distribution hard bus 2 of the embodiment is a 0.4kv power distribution hard bus, and the bypass hard bus 9 is a 0.4kv bypass hard bus.
According to the invention, the two low-voltage distribution boxes are connected through the connecting device, so that when the switch in the distribution box is overhauled, the distribution box is replaced and other operations, power conversion and supply can be realized through the bypass bus, and the connecting device is provided with the electric interlock, so that the two distribution transformers are ensured not to run in parallel.
The work of replacing the low-voltage distribution box may cause the zero line to be separated from the grounding grid, so that the grounding grid is additionally arranged at the tail end of the low-voltage trunk line 12 every time, and the grounding resistance is not more than four ohms.
The circuit breakers and the disconnecting link in the bypass switch box are arranged in a layered mode and are hard to isolate, and feeder lines are ensured not to be powered off when the bypass circuit breakers 8 are overhauled.
The low-voltage bypass bus tie distribution box aims at the existing distribution box switch equipment and the electrical principle, when the switch in the distribution box is overhauled, the distribution box can be replaced, power supply can be realized through the bypass bus, the tie switch is intensively arranged in the distribution box, switching operation is safe and rapid, and power supply reliability is improved to the greatest extent.
What has been described above is merely some embodiments of the present invention. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the invention.
Claims (5)
1. The low-voltage distribution box with the bypass bus is characterized by comprising two low-voltage distribution boxes (AB) which are symmetrically arranged in a circuit mode, wherein the two low-voltage distribution boxes (AB) are connected through a connecting device (10), each low-voltage distribution box (AB) comprises a low-voltage distribution main box (Z) and a bypass switch box (P), and the low-voltage distribution main box (Z) is electrically connected with the bypass switch box (P) through a connecting disconnecting link (4) and a distribution double-throw disconnecting link (5);
the low-voltage distribution main box (Z) comprises a distribution main switch (1), a distribution hard bus (2) and a feeder circuit breaker (3) which are electrically connected in sequence, wherein the feeder circuit breaker (3) is electrically connected with a bypass switch box (P);
the bypass switch box (P) comprises a communication breaker (6), a bypass breaker (8) and a bypass hard bus (9), wherein the bypass hard bus (9) is electrically connected with the communication breaker (6) and the bypass breaker (8) respectively, the communication breaker (6) is electrically connected with the communication disconnecting link (4), and the bypass breaker (8) is electrically connected with the power distribution double-throw disconnecting link (5);
the power distribution double-throw disconnecting link (5) is a twelve-line power distribution double-throw disconnecting link, the power distribution double-throw disconnecting link (5) is electrically connected with the feeder circuit breaker (3) and the bypass circuit breaker (8) respectively and leads out a low-voltage trunk line (12), and a ground network is arranged at the tail end of each low-voltage trunk line (12);
the bypass switch box (P) is provided with an emergency power supply access breaker (7), and the emergency power supply access breaker (7) is electrically connected with a bypass hard bus (9).
2. The low-voltage bypass bus tie box of claim 1, wherein the tie device (10) is a three-phase four-wire tie, the tie device (10) being provided with an electrical interlock.
3. The low voltage bypass bus tie block terminal of claim 1 wherein the ground network ground resistance is no greater than four ohms.
4. The low voltage bypass busbar tie distribution box of claim 1, wherein the tie knife switch (4), tie breaker (6), distribution double throw knife switch (5) and bypass breaker (8) are arranged in layers and are hard isolated.
5. The low-voltage bypass bus bar interconnection distribution box according to claim 1, characterized in that the low-voltage distribution box (Z) is provided with an overhaul grounding post (11), the overhaul grounding post (11) being electrically coupled to the distribution hard bus bar (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710454703.5A CN107069444B (en) | 2017-06-15 | 2017-06-15 | Low-voltage contact distribution box with bypass bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710454703.5A CN107069444B (en) | 2017-06-15 | 2017-06-15 | Low-voltage contact distribution box with bypass bus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107069444A CN107069444A (en) | 2017-08-18 |
| CN107069444B true CN107069444B (en) | 2023-12-22 |
Family
ID=59594821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710454703.5A Active CN107069444B (en) | 2017-06-15 | 2017-06-15 | Low-voltage contact distribution box with bypass bus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107069444B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109546558B (en) * | 2018-11-28 | 2021-04-27 | 泰康保险集团股份有限公司 | Method, device and system for maintaining small bus power supply jack box on line |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB126757A (en) * | 1918-02-15 | 1919-05-15 | British Thomson Houston Co Ltd | Improvements in and relating to Electric Distribution Systems. |
| JPH05146075A (en) * | 1991-11-20 | 1993-06-11 | Mitsubishi Electric Corp | Power flow controller |
| CN200997496Y (en) * | 2006-08-09 | 2007-12-26 | 长春红星电器设备厂 | Movable high-voltage switching closet with shunt |
| CN102368593A (en) * | 2011-12-01 | 2012-03-07 | 四川电力设计咨询有限责任公司 | Line layout structure of double-busbar double-subsection GIS (Gas Insulated Switchgear) power distribution unit |
| CN206135210U (en) * | 2016-09-29 | 2017-04-26 | 全球能源互联网研究院 | Two bus section's novel main wiring |
| CN206908096U (en) * | 2017-06-15 | 2018-01-19 | 潘冠华 | Depression belt hospital bus bar gets in touch with distribution box |
-
2017
- 2017-06-15 CN CN201710454703.5A patent/CN107069444B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB126757A (en) * | 1918-02-15 | 1919-05-15 | British Thomson Houston Co Ltd | Improvements in and relating to Electric Distribution Systems. |
| JPH05146075A (en) * | 1991-11-20 | 1993-06-11 | Mitsubishi Electric Corp | Power flow controller |
| CN200997496Y (en) * | 2006-08-09 | 2007-12-26 | 长春红星电器设备厂 | Movable high-voltage switching closet with shunt |
| CN102368593A (en) * | 2011-12-01 | 2012-03-07 | 四川电力设计咨询有限责任公司 | Line layout structure of double-busbar double-subsection GIS (Gas Insulated Switchgear) power distribution unit |
| CN206135210U (en) * | 2016-09-29 | 2017-04-26 | 全球能源互联网研究院 | Two bus section's novel main wiring |
| CN206908096U (en) * | 2017-06-15 | 2018-01-19 | 潘冠华 | Depression belt hospital bus bar gets in touch with distribution box |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107069444A (en) | 2017-08-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108233243B (en) | Gas insulation switch cabinet | |
| US6683267B1 (en) | Gas-insulated switchgear device | |
| CN103151754B (en) | A connection method and device for the incoming and outgoing lines of a low-voltage cable branch box | |
| CN201266802Y (en) | Distribution board of medium voltage switchgear | |
| CN100563070C (en) | Gas-insulated composite switchgear | |
| CN208078653U (en) | Double-bus and single busbar mixing wiring high voltage distribution installation | |
| CN107069444B (en) | Low-voltage contact distribution box with bypass bus | |
| CN102938543A (en) | Intelligent all-insulating full-closing inflatable ring main unit | |
| CN111509701A (en) | Single bus wiring structure | |
| CN110729635B (en) | Gas-insulated metal-enclosed switchgear | |
| CN207518347U (en) | The spare shunt tripping conversion equipment of orbit traffic direct current tractive power supply system | |
| CN115986736A (en) | Electric main wiring circuit with three bus bars mixed, its use method and power supply method | |
| CN106848999B (en) | Direct current breaker | |
| CN212343327U (en) | Single bus wiring structure | |
| RU117732U1 (en) | HIGH VOLTAGE DISTRIBUTION DEVICE | |
| CN104143777A (en) | Gas-insulated metal-enclosed switchgear and single phase thereof | |
| CN211223112U (en) | Main wiring structure of hub traction substation | |
| CN105794059B (en) | Switchgear with busbar-side voltage transformers or surge arresters | |
| CN203445506U (en) | Connecting device of split cabinet-type gas insulated switchgear (GIS) and shared box-type gas insulated switchgear (GIS) | |
| CN206908096U (en) | Depression belt hospital bus bar gets in touch with distribution box | |
| CN223858656U (en) | Electrical equipment arrangement structure of switch station | |
| CN205051235U (en) | Novel arrangement structure of gas insulation switch device | |
| CN218919986U (en) | A space-saving substation layout structure for non-stop maintenance of circuit breakers | |
| CN223261085U (en) | Switch cabinet metering and bus lifting device | |
| CN105429040B (en) | Switchgear with bus section function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20231130 Address after: 530000 No. 5 Standard Plant, High tech Industry Incubation Demonstration Park, No. 19, West 10th Road, Keyuan Avenue, Nanning City, Guangxi Zhuang Autonomous Region Applicant after: GUANGXI CHUNMAO ELECTRIC AUTOMATION ENGINEERING Co.,Ltd. Address before: 528203, No. 89 Youguang Gong Lane, Heqing Si Village, Jiujiang Town, Nanhai District, Foshan City, Guangdong Province Applicant before: Pan Guanhua |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |