CN203326598U - Arc-extinguishing, resonance-eliminating and all-overvoltage inhibiting cabinet - Google Patents
Arc-extinguishing, resonance-eliminating and all-overvoltage inhibiting cabinet Download PDFInfo
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- CN203326598U CN203326598U CN2013203954741U CN201320395474U CN203326598U CN 203326598 U CN203326598 U CN 203326598U CN 2013203954741 U CN2013203954741 U CN 2013203954741U CN 201320395474 U CN201320395474 U CN 201320395474U CN 203326598 U CN203326598 U CN 203326598U
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Abstract
The utility model relates to an arc-extinguishing, resonance-eliminating and all-overvoltage inhibiting cabinet including a cabinet body and three main-busbar insulators installed in the cabinet body. The three main-busbar insulators are respectively used for being connected with three phases including A, B, and C phases of a three-phase busbar. The three main-busbar insulators are linearly arrayed on three parallel levels in a gravity-center direction. The main-busbar insulator arranged on the bottommost level is connected with the C phase. The main-busbar insulator arranged on the middle level is connected with the B phase. The main-busbar insulator arranged on the topmost level is connected with the A phase. The arc-extinguishing, resonance-eliminating and all-overvoltage inhibiting cabinet enables conditions of ferromagnetic resonances to be destroyed fundamentally through adjustment of fixed positions of the A, B, and C phases and at the same time accidents such as PT burning and fuse explosion, which are resulted from overvoltage, to be prevented.
Description
Technical field
The utility model relates to control cubicle, specifically a kind of arc-extinguishing harmonic-eliminating and full overvoltage suppression cabinet.
Background technology
Along with social development, the safe operation of electric power system and the reliability of power supply have seemed more and more important.For a long time, in the 3-35kv isolated neutral system, the single phase ground fault evolution generally: intermittent arcing ground → stable arc ground connection → metal ground connection.When intermittent arc grounding, overvoltage is the most serious, and the overvoltage of its healthy phases can reach 3.15-3.5 times of normal operation phase voltage, even higher.
High like this overvoltage long duration of action is in electrical network, will cause the accumulation damage of electric equipment and system insulation, form the insulation weak spot, and then puncture over the ground and finally cause the phase fault accident, and can cause following accident: the puncturing of insulation of electrical installation; Cable is blown out phenomenon; The voltage transformer supersaturation, easily excite ferro resonance, causes PT to burn; Explosion of on Arrester, when having served as voltage energy and surpassing the energy that lightning arrester can bear, will cause lightning-arrest blast.
The utility model content
In view of this, the utility model proposes a kind of arc-extinguishing harmonic-eliminating and full overvoltage suppression cabinet, when it is intended to metal ground connection, the amplitude route selection of Main Basis circuit zero-sequence current, during arc grounding, the Sudden Changing Rate of Main Basis device action front and back circuit zero-sequence current carries out route selection, the low problem of route selection accuracy rate while having overcome the slow and arc grounding of conventional line selection apparatus route selection speed, not only fundamentally destroy the condition of ferro resonance, avoided " the burning PT " and the accident of " quick-fried insurance " that cause because of overvoltage simultaneously.
The utility model is to realize like this, arc-extinguishing harmonic-eliminating and full overvoltage suppression cabinet, it comprises cabinet and is arranged on three main bus bar insulators in this cabinet, these three main bus bar insulators are respectively used to connect A, B, the C three-phase of three-phase bus, these three main bus bar insulators along center of gravity direction linear array on three parallel aspects, and the main bus bar insulator be positioned on the most beneath aspect is connected in the C phase, the main bus bar insulator be positioned on intermediate surface is connected in the B phase, and the main bus bar insulator be positioned on the top aspect is connected in the A phase.
As the further improvement of such scheme, these three main bus bar insulators adopt other device isolation of isolation knife and this cabinet inside.
The utility model has fundamentally destroyed the condition of ferro resonance by the fixed position of adjusting A, B, C three-phase, has avoided " the burning PT " and the accident of " quick-fried insurance " that cause because of overvoltage simultaneously.
The accompanying drawing explanation
The arc-extinguishing harmonic-eliminating that Fig. 1 provides for the utility model better embodiment and the structural representation of full overvoltage suppression cabinet.
Fig. 2 is the left view that in Fig. 1, arc-extinguishing harmonic-eliminating and full overvoltage suppression cabinet remove left side wall.
Main symbol description: cabinet 1, hinge 2, harmonic-eliminating controller 3, ammeter 4, voltage change-over switch 5, voltmeter 6, inhibitory control device 7, temperature and humidity controller 8, middle door observation window 9, nameplate 10, Xiamen observation window 11, electromagnetic lock 12, single-phase intelligent switch 13, voltage transformer 14, harmonic elimination apparatus 15, can hold comprehensive overvoltage protection device 16, secondary meter chamber 17, high-tension fuse 18, isolation knife 19, hyperbaric chamber 20, main bus bar insulator 21, wall bushing 22 greatly.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
See also Fig. 1 and Fig. 2, arc-extinguishing harmonic-eliminating and full overvoltage suppression cabinet monnolithic case structure are cabinet 1, harmonic-eliminating controller 3, ammeter 4, voltage change-over switch 5, voltmeter 6, inhibitory control device 7, temperature and humidity controller 8 all are housed in this cabinet 1, and are arranged on the positive side of this cabinet 1 and check for the user.This cabinet 1 is the structure of upper, middle and lower, is provided with middle door observation window 9, Xiamen observation window 11.Also be provided with nameplate 10 and electromagnetic lock 12 on this cabinet 1.Cabinet 1 arranges the connection of door by hinge 2, also be provided with wall bushing 22 on cabinet 1 so that firm the installation.
On the inside of cabinet 1, sheaf space is separated out two zones: 17, hyperbaric chamber, secondary meter chamber 20.Three main bus bar insulators 21 are installed in hyperbaric chamber 20, and these three main bus bar insulators 21 are respectively used to connect A, B, the C three-phase of three-phase bus.These three main bus bar insulators 21 along center of gravity direction linear array on three parallel aspects, and the main bus bar insulator 21 be positioned on the most beneath aspect is connected in the C phase, the main bus bar insulator 21 be positioned on intermediate surface is connected in the B phase, and the main bus bar insulator 21 be positioned on the top aspect is connected in the A phase.These three main bus bar insulators 21 adopt other device isolation of isolation knife 19 and cabinet 1 inside.The bottom of cabinet 1 is equipped with single-phase intelligent switch 13, voltage transformer 14, a harmonic elimination apparatus 15, and middle part is equipped with and can holds comprehensive overvoltage protection device 16, high-tension fuse 18 greatly.
The utility model has fundamentally destroyed the condition of ferro resonance by the fixed position of adjusting A, B, C three-phase, has avoided " the burning PT " and the accident of " quick-fried insurance " that cause because of overvoltage simultaneously.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection range of the present utility model.
Claims (2)
1. arc-extinguishing harmonic-eliminating and full overvoltage suppression cabinet, it comprises cabinet and is arranged on three main bus bar insulators in this cabinet, these three main bus bar insulators are respectively used to connect A, B, the C three-phase of three-phase bus, it is characterized in that: these three main bus bar insulators along center of gravity direction linear array on three parallel aspects, and the main bus bar insulator be positioned on the most beneath aspect is connected in the C phase, the main bus bar insulator be positioned on intermediate surface is connected in the B phase, and the main bus bar insulator be positioned on the top aspect is connected in the A phase.
2. arc-extinguishing harmonic-eliminating as claimed in claim 1 and full overvoltage suppression cabinet, is characterized in that: other device isolation of these three main bus bar insulators employing isolation knife and this cabinet inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203954741U CN203326598U (en) | 2013-07-03 | 2013-07-03 | Arc-extinguishing, resonance-eliminating and all-overvoltage inhibiting cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203954741U CN203326598U (en) | 2013-07-03 | 2013-07-03 | Arc-extinguishing, resonance-eliminating and all-overvoltage inhibiting cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203326598U true CN203326598U (en) | 2013-12-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203954741U Expired - Fee Related CN203326598U (en) | 2013-07-03 | 2013-07-03 | Arc-extinguishing, resonance-eliminating and all-overvoltage inhibiting cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203326598U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111324155A (en) * | 2018-12-17 | 2020-06-23 | 安徽伟创电力科技有限公司 | Arc suppression cabinet controller |
-
2013
- 2013-07-03 CN CN2013203954741U patent/CN203326598U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111324155A (en) * | 2018-12-17 | 2020-06-23 | 安徽伟创电力科技有限公司 | Arc suppression cabinet controller |
| CN111324155B (en) * | 2018-12-17 | 2021-08-13 | 安徽伟创电力科技有限公司 | Arc suppression cabinet controller |
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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: 20131204 Termination date: 20150703 |
|
| EXPY | Termination of patent right or utility model |