CN203932706U - A kind of arc-extinguishing harmonic-eliminating cabinet - Google Patents
A kind of arc-extinguishing harmonic-eliminating cabinet Download PDFInfo
- Publication number
- CN203932706U CN203932706U CN201420341094.4U CN201420341094U CN203932706U CN 203932706 U CN203932706 U CN 203932706U CN 201420341094 U CN201420341094 U CN 201420341094U CN 203932706 U CN203932706 U CN 203932706U
- Authority
- CN
- China
- Prior art keywords
- cabinet
- arc
- isolation switch
- knee
- eliminating
- 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
- 210000003127 knee Anatomy 0.000 claims abstract description 16
- 238000002955 isolation Methods 0.000 claims abstract description 15
- 230000005611 electricity Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 230000007935 neutral effect Effects 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Abstract
The utility model belongs to power equipment switch cubicle field, especially a kind of arc-extinguishing harmonic-eliminating cabinet, comprise cabinet, on cabinet sidewall, be provided with at least one wall bushing, on the panel of cabinet, be provided with electrification display, middle door observation window, operating mechanism, ammeter and illuminating lamp, in cabinet, be provided with busbar, microcontroller, also comprise the voltage transformer that is arranged on bottom of cabinet bulk, vacuum contactor summation current transformer, on current transformer, be provided with overvoltage protection device, current limiting fuse is arranged on the top of vacuum contactor, also be provided with isolation switch at cabinet middle part, isolation switch below is provided with voltage sensor and high-tension fuse, also comprise connection knee, described operating mechanism is connected to isolation switch by connecting knee, and the upper extreme point of described connection knee curved arc is positioned at the top position of current limiting fuse.This device has higher cost performance, simple in structure, easy for installation, is applicable to the with power system with neutral point nondirectly grounding of confession, electricity consumption enterprise.
Description
Technical field
The utility model belongs to power equipment switch cubicle field, especially a kind of arc-extinguishing harmonic-eliminating cabinet.
Background technology
Along with the development of present electrical network, it is a kind of inexorable trend that overhead transmission line is progressively replaced by the cable line of solid insulation.The build-up effect puncturing due to solid insulation, its internal overvoltage, the arc grounding overvoltage particularly producing when electrical network generation single-phase intermittent arc earthing and the ferro-resonance over-voltage exciting thus, oneself becomes a threat greatly of this class electric power netting safe running, wherein serious with single-phase arc grounding overvoltage.It is saturated that arc grounding overvoltage can make voltage transformer occur, and excites ferro resonance, causes voltage transformer seriously to transship, and causes fuse blows or instrument transformer to burn.Because the arc grounding overvoltage duration is long, energy very easily exceedes the ability to bear of lightning arrester, causes Explosion of on Arrester simultaneously.The accumulation destruction that the overvoltage of the high amplitude that arc grounding produces has besides been aggravated the solid insulations such as cable even punctures and blows out.Existing arc-extinguishing harmonic-eliminating cabinet, due to security consideration, needs to arrange a large amount of insulating parts between parts, or inter-module maintenance minimum spacing, cause product overall structure larger, how can meet security needs, can reduce again equipment volume, improve adaptability, be current urgent problem.
Summary of the invention
For above-mentioned technical problem, this patent aims to provide a kind of simple and reasonable arc-extinguishing harmonic-eliminating cabinet.
A kind of arc-extinguishing harmonic-eliminating cabinet, comprise cabinet 1, on cabinet 1 sidewall, be provided with at least one wall bushing 2, on the panel of cabinet 1, be provided with electrification display 3, middle door observation window 4, operating mechanism 14, ammeter 7 and illuminating lamp 6, in cabinet 1, be provided with busbar 30, microcontroller 31, also comprise the voltage transformer 20 that is arranged on cabinet 1 bottom, vacuum contactor 21 summation current transformers 22, on current transformer 22, be provided with overvoltage protection device 23, current limiting fuse 24 is arranged on the top of vacuum contactor 21, also be provided with isolation switch 17 at cabinet 1 middle part, isolation switch 17 belows are provided with voltage sensor 18 and high-tension fuse 19, also comprise and connect knee 32, described operating mechanism 14 is connected to isolation switch 17 by connecting knee 32, and the upper extreme point of described connection knee 32 curved arcs is positioned at the top position of current limiting fuse 24.
Further, on the panel of described cabinet 1, be also provided with voltmeter 9, Qianmen electromagnetic lock 13.
Further, on described operating mechanism 14, be provided with disconnecting link electromagnetic lock 15.
Further, on the panel of described described cabinet 1, be also provided with extinguishing arc throwing and back out pass 8.
This patent has following beneficial effect:
1,, occurring when arc grounding, the vacuum contactor of device internal fault phase can rapid closing, arc grounding is converted into metallic earthing and not only makes the electric arc of fault point extinguish immediately, has also thoroughly eliminated arc grounding overvoltage simultaneously;
2, this device has higher cost performance, can replace arc suppression coil and corollary equipment thereof, voltage transformer cabinet and protective device thereof and Small Electric Current Earthing And Routing Device, saves on-the-spot installing space.
3, apparatus structure is simple, easy for installation, is applicable to the with power system with neutral point nondirectly grounding of confession, electricity consumption enterprise.
4, this patent structure is carried out special setting, adopt and connect knee attended operation mechanism and isolation switch, the upper extreme point that connects knee curved arc is positioned at the top position of current limiting fuse, the in the situation that of constancy of volume, increase the spacing that connects knee and current limiting fuse, thereby save insulating barrier structure, further reduce product cost.
Brief description of the drawings
Fig. 1 is arc-extinguishing harmonic-eliminating cabinet cabinet inner structure schematic diagram.
Fig. 2 is arc-extinguishing harmonic-eliminating cabinet panel schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of this patent is described.
As shown in Figure 1 and Figure 2, arc-extinguishing harmonic-eliminating cabinet of the present utility model, comprise cabinet 1, on cabinet 1 sidewall, be provided with at least one wall bushing 2, on the panel of cabinet 1, be provided with electrification display 3, middle door observation window 4, operating mechanism 14, ammeter 7 and illuminating lamp 6, in cabinet 1, be provided with busbar 30, microcontroller 31.
Also comprise the voltage transformer 20, vacuum contactor 21 summation current transformers 22 that are arranged on cabinet 1 bottom; on current transformer 22, be provided with overvoltage protection device 23; current limiting fuse 24 is arranged on the top of vacuum contactor 21; in current limiting fuse 24 in the time there is line to line fault, cause device erroneous judgement due to reasons such as device internal fault or personnel's mis-wired; can within 1～2ms, realize and damming fast; and device is exited, avoid causing the consequence of line to line fault.Voltage transformer 20 provides voltage signal for the protection in system and measuring equipment, for device provides secondary voltage and the auxiliary secondary voltage signal of protected system.
Also be provided with isolation switch 17 at cabinet 1 middle part, isolation switch 17 belows are provided with voltage sensor 18 and high-tension fuse 19; Also comprise and connect knee 32, described operating mechanism 14 is connected to isolation switch 17 by connecting knee 32, and the upper extreme point of described connection knee 32 curved arcs is positioned at the top position of current limiting fuse 24.Isolation switch 17 is used for putting into operation and exiting of control device, in the time that device needs maintenance or debugging, with isolation of system and form obvious cut-off point.Connection knee 32 can increase the spacing with current limiting fuse 24, thereby saves insulating barrier structure, further reduces product cost.
The signal that microcontroller 31 provides according to voltage transformer 20, failure judgement classification (PT broken string, metal ground connection, arc grounding) and separate, to control room or host computer send fault-signal, when occurring when arc grounding, to send action command to fault phase vacuum contactor 21 immediately.
On the panel of cabinet 1, be also provided with voltmeter 9, Qianmen electromagnetic lock 13.On described operating mechanism 14, be provided with disconnecting link electromagnetic lock 15.On the panel of described described cabinet 1, be also provided with extinguishing arc throwing and back out pass 8, voltage transforms switch 10.Package unit is fixed switching cabinet, and overall dimensions can require processing, such as 6kV or 10kV etc. according to user.
Claims (4)
1. an arc-extinguishing harmonic-eliminating cabinet, it is characterized in that: comprise cabinet (1), on cabinet (1) sidewall, be provided with at least one wall bushing (2), on the panel of cabinet (1), be provided with electrification display (3), middle door observation window (4), operating mechanism (14), ammeter (7) and illuminating lamp (6), in cabinet (1), be provided with busbar (30), microcontroller (31), also comprise the voltage transformer (20) that is arranged on cabinet (1) bottom, vacuum contactor (21) summation current transformer (22), on current transformer (22), be provided with overvoltage protection device (23), current limiting fuse (24) is arranged on the top of vacuum contactor (21), also be provided with isolation switch (17) at cabinet (1) middle part, isolation switch (17) below is provided with voltage sensor (18) and high-tension fuse (19), also comprise and connect knee (32), described operating mechanism (14) is connected to isolation switch (17) by connecting knee (32), and the upper extreme point of described connection knee (32) curved arc is positioned at the top position of current limiting fuse (24).
2. arc-extinguishing harmonic-eliminating cabinet according to claim 1, is characterized in that: on the panel of described cabinet (1), be also provided with voltmeter (9), Qianmen electromagnetic lock (13).
3. arc-extinguishing harmonic-eliminating cabinet according to claim 1, is characterized in that: on described operating mechanism (14), be provided with disconnecting link electromagnetic lock (15).
4. arc-extinguishing harmonic-eliminating cabinet according to claim 1, is characterized in that: on the panel of described described cabinet (1), be also provided with extinguishing arc throwing and back out pass (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420341094.4U CN203932706U (en) | 2014-06-25 | 2014-06-25 | A kind of arc-extinguishing harmonic-eliminating cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420341094.4U CN203932706U (en) | 2014-06-25 | 2014-06-25 | A kind of arc-extinguishing harmonic-eliminating cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203932706U true CN203932706U (en) | 2014-11-05 |
Family
ID=51828462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420341094.4U Active CN203932706U (en) | 2014-06-25 | 2014-06-25 | A kind of arc-extinguishing harmonic-eliminating cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203932706U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107453340A (en) * | 2017-07-03 | 2017-12-08 | 安徽恒凯电力保护设备有限公司 | A kind of Intelligent arc extinguishing resonance elimination overvoltage suppression cabinet |
| CN107465141A (en) * | 2016-06-03 | 2017-12-12 | 有能集团江苏电气有限公司 | A kind of vacuum circuit breaker |
| CN109980537A (en) * | 2019-02-25 | 2019-07-05 | 安徽乐立电气有限公司 | A kind of arc-extinguishing harmonic-eliminating switchgear |
-
2014
- 2014-06-25 CN CN201420341094.4U patent/CN203932706U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107465141A (en) * | 2016-06-03 | 2017-12-12 | 有能集团江苏电气有限公司 | A kind of vacuum circuit breaker |
| CN107453340A (en) * | 2017-07-03 | 2017-12-08 | 安徽恒凯电力保护设备有限公司 | A kind of Intelligent arc extinguishing resonance elimination overvoltage suppression cabinet |
| CN109980537A (en) * | 2019-02-25 | 2019-07-05 | 安徽乐立电气有限公司 | A kind of arc-extinguishing harmonic-eliminating switchgear |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2817170Y (en) | Arc-resonance extinction route-selecting over voltage protection device | |
| CN203932706U (en) | A kind of arc-extinguishing harmonic-eliminating cabinet | |
| CN104377683A (en) | Device and method for single-phase intermittent arc grounding overvoltage protection | |
| CN203180518U (en) | Intelligent switch arc-extinguishing and overvoltage-protecting device | |
| CN203871688U (en) | Arc-extinguishing resonance-eliminating cabinet | |
| CN110048335A (en) | A kind of switchgear | |
| CN104868461A (en) | Intelligent switch arc-extinguishing and overvoltage-protecting device | |
| CN201956666U (en) | High-voltage flexible safety device | |
| CN201887468U (en) | Device for limiting all overvoltage | |
| CN203553900U (en) | Neutral point complete set protection device for transformer | |
| CN102097783A (en) | High-voltage flexible safety device | |
| CN202633766U (en) | Preassembled case-type transformer substation transformer cabin safety net door blocking device | |
| CN202872357U (en) | Optimized comprehensive protection device of power grid | |
| CN104134984A (en) | Neutral point virtual ground connection cabinet | |
| CN201556938U (en) | Grounding protection device of neutral point of AC generator | |
| CN201044232Y (en) | Device for extinguishing arc, extinguishing harmony, selecting line and over-voltage protection | |
| CN104167722A (en) | Overvoltage inhibition cabinet | |
| CN203859512U (en) | PT arc-extinguishing protective device | |
| CN211063068U (en) | Full overvoltage comprehensive limiting device | |
| CN201196677Y (en) | Vacuum switch insulation monitoring and high voltage electrified locking device | |
| CN102593817A (en) | Microcomputer arc-extinguishing and over-voltage protection integrated device | |
| CN202616767U (en) | Intelligent comprehensive arc-extinction resonance-elimination overvoltage protection optimizing device | |
| CN102709899A (en) | Intelligent arc extinction and resonance extinction overvoltage protection integral optimization device | |
| CN203326598U (en) | Arc-extinguishing, resonance-eliminating and all-overvoltage inhibiting cabinet | |
| CN203135434U (en) | Neutral point virtual grounding device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 2 Qinhuai North Road, Lishui County Economic Development Zone, Nanjing City, Jiangsu Province, 211200 Patentee after: NANJING ZHENGRUI ELECTRIC TECHNOLOGY CO.,LTD. Patentee after: STATE GRID JIANGSU ELECTRIC POWER Co.,Ltd. NANJING POWER SUPPLY BRANCH Address before: No. 2 Qinhuai North Road, Lishui County Economic Development Zone, Nanjing City, Jiangsu Province, 211200 Patentee before: NANJING ZHENGRUI ELECTRIC TECHNOLOGY CO.,LTD. Patentee before: STATE GRID JIANGSU ELECTRIC POWER COMPANY NANJING POWER SUPPLY Co. Address after: No. 2 Qinhuai North Road, Lishui County Economic Development Zone, Nanjing City, Jiangsu Province, 211200 Patentee after: NANJING ZHENGRUI ELECTRIC TECHNOLOGY CO.,LTD. Patentee after: STATE GRID JIANGSU ELECTRIC POWER COMPANY NANJING POWER SUPPLY Co. Address before: No. 2 Qinhuai North Road, Lishui County Economic Development Zone, Nanjing City, Jiangsu Province, 211200 Patentee before: NANJING ZHENGRUI ELECTRIC TECHNOLOGY CO.,LTD. Patentee before: JIANGSU NANJING POWER SUPPLY Co. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231128 Address after: No. 2 Qinhuai North Road, Lishui County Economic Development Zone, Nanjing City, Jiangsu Province, 211200 Patentee after: NANJING ZHENGRUI ELECTRIC TECHNOLOGY CO.,LTD. Address before: No. 2 Qinhuai North Road, Lishui County Economic Development Zone, Nanjing City, Jiangsu Province, 211200 Patentee before: NANJING ZHENGRUI ELECTRIC TECHNOLOGY CO.,LTD. Patentee before: STATE GRID JIANGSU ELECTRIC POWER Co.,Ltd. NANJING POWER SUPPLY BRANCH |