CN201387999Y - Central high-low cabinet type intelligent arc extinction, harmonic elimination and route selection device - Google Patents
Central high-low cabinet type intelligent arc extinction, harmonic elimination and route selection device Download PDFInfo
- Publication number
- CN201387999Y CN201387999Y CN200920024107U CN200920024107U CN201387999Y CN 201387999 Y CN201387999 Y CN 201387999Y CN 200920024107 U CN200920024107 U CN 200920024107U CN 200920024107 U CN200920024107 U CN 200920024107U CN 201387999 Y CN201387999 Y CN 201387999Y
- Authority
- CN
- China
- Prior art keywords
- cabinet
- voltage
- selection device
- arc extinction
- arc
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model relates to a central high-low cabinet type intelligent arc extinction, harmonic elimination and route selection device, belonging to the over-voltage protection technical field. The device comprises a cabinet body and is characterized in that the bottom part of the cabinet body is provided with two groups of vacuum contactors and one group of voltage transformers; an isolating switch, an over-voltage protector and a high-voltage current-limiting fuse are arranged in the cabinet body; and the cabinet body is a high-low cabinet. The device can replace a voltage transformer cabinet to provide the voltage monitoring function, can replace an arc extinction coil to eliminate the intermittent arc-light ground fault and have the function of limiting the arc-light ground over voltage that the arc extinction coil does not have, and can replace various harmonic eliminators to limit and eliminate the resonance oscillation over voltage. In addition, the device is integrated with the function of a PT cabinet.
Description
Technical field
The utility model belongs to a kind of overvoltage protection, is specifically related to a kind of middle high-low cabinet type intelligence extinguishing arc resonance eliminating wire-selection device.
Background technology
The electrical network of China 3～35kV (66kV) non_direct ground, when Single Phase Metal ground connection is taken place, the voltage to earth of all the other two-phases will be increased to line voltage (UL), thereby the electric equipment of this class electrical network, insulation against ground level as transformer, voltage/current instrument transformer, circuit breaker, cable line etc. can both satisfy the requirement of bearing the effect of line voltage for a long time and not damaging.
Traditional concept is unilateral to be thought, 3～35kV electrical network belongs to medium voltage distribution network, and the amplitude of internal overvoltage is not high in this type of electrical network, so the principal element that jeopardizes line insulation safety should not be an internal overvoltage, but atmospheric over-voltage.Thereby the overvoltage protection measure of taking for a long time is only at preventing atmospheric over-voltage, and the major technique measure only limits to install various types of lightning arresters, and its protection value is higher, does not play any protective effect for internal overvoltage.
Yet along with the development of electrical network, overhead transmission line is progressively replaced by the cable line of solid insulation.Because the build-up effect that solid insulation punctures, its internal overvoltage, particularly arc grounding overvoltage that produces during electrical network generation single phase intermittent arc grounding and the ferro-resonance over-voltage that excites have therefrom become one of this class electric power netting safe running and have threatened greatly.Wherein serious with single-phase arc grounding overvoltage.
Existing operating standard regulation when non-direct ground system generation single phase ground fault, allows to continue operation two hours, as through the approval of higher level department, can also prolong.If single phase ground fault is an arc grounding, then its overvoltage can reach the peak value of 3.5 times of normal operation phase voltages, under high like this overvoltage continuous action, certainly will cause the accumulation damage of insulation of electrical installation, cause in the insulation weak link that perfects phase to puncture over the ground and then cause the phase fault accident.
Summary of the invention
The utility model purpose provides a kind of middle high-low cabinet type intelligence extinguishing arc resonance eliminating wire-selection device; be mainly used in the electric power system of 3～35kV neutral non-effective grounding, provide reliably protecting the various overvoltage of this class electrical network, particularly single phase intermittent arcing ground over-voltage and resonance overvoltage.
The following technical scheme of the concrete employing of the utility model:
A kind of middle high-low cabinet type intelligence extinguishing arc resonance eliminating wire-selection device comprises cabinet, it is characterized in that,
Bottom of cabinet bulk is provided with 2 groups of vacuum contactors and 1 group of voltage transformer;
Isolating switch, overvoltage protection device, high-voltage and current-limitation fuse are set in the cabinet;
Described cabinet is a high-low cabinet.
Described cabinet has 3 groups of sleeve pipes; Described cabinet has and has electromagnetic lock and electrification display on the panel.
Compared with prior art, advantage of the present utility model is:
1) the utility model instead of voltage instrument transformer cabinet provides the voltage monitoring function; Substitute arc suppression coil, eliminate the intermittent arc grounding fault, and have the function of the restriction arc light grounding surge that arc suppression coil do not have; Substitute all kinds of resonance eliminators, restriction is also eliminated resonance overvoltage.
2) PT cabinet function that the utility model is integrated.
3) has the restriction lightning overvoltage, the function of atmospheric over-voltage switching overvoltage.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the utility model panel construction schematic diagram.
Among the figure, 1-overvoltage protection device, 2-high-tension fuse, 3-voltage transformer, 4-vacuum contactor, 5-high-voltage and current-limitation fuse, 6-isolating switch, 7-sleeve pipe, 8-electromagnetic lock, 9-electrification display.
Embodiment
Embodiment
As shown in Figure 1, a kind of middle high-low cabinet type intelligence extinguishing arc resonance eliminating wire-selection device comprises cabinet, and bottom of cabinet bulk is provided with two groups of vacuum contactors 4 and one group of voltage transformer 3; Isolating switch 6, overvoltage protection device 1, high-voltage and current-limitation fuse 5 are set in the cabinet; Described cabinet is a high-low cabinet, and described cabinet has three groups of sleeve pipes 7.
As shown in Figure 2, have electromagnetic lock 8 and electrification display 9 on the panel.
The utility model electrical schematic is same as the prior art.
Claims (3)
1. a middle high-low cabinet type intelligence extinguishing arc resonance eliminating wire-selection device comprises cabinet, it is characterized in that,
Bottom of cabinet bulk is provided with 2 groups of vacuum contactors and 1 group of voltage transformer;
Isolating switch, overvoltage protection device, high-voltage and current-limitation fuse are set in the cabinet;
Described cabinet is a high-low cabinet.
2. mid-cabinet type isolation truck type extinguishing arc resonance eliminating wire-selection device according to claim 1 is characterized in that described cabinet has 3 groups of sleeve pipes.
3. mid-cabinet type isolation truck type extinguishing arc resonance eliminating wire-selection device according to claim 1 is characterized in that described cabinet has and has electromagnetic lock and electrification display on the panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920024107U CN201387999Y (en) | 2009-03-24 | 2009-03-24 | Central high-low cabinet type intelligent arc extinction, harmonic elimination and route selection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920024107U CN201387999Y (en) | 2009-03-24 | 2009-03-24 | Central high-low cabinet type intelligent arc extinction, harmonic elimination and route selection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201387999Y true CN201387999Y (en) | 2010-01-20 |
Family
ID=41580541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920024107U Expired - Fee Related CN201387999Y (en) | 2009-03-24 | 2009-03-24 | Central high-low cabinet type intelligent arc extinction, harmonic elimination and route selection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201387999Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102593817A (en) * | 2012-02-16 | 2012-07-18 | 安徽华正电气有限公司 | Microcomputer arc-extinguishing and over-voltage protection integrated device |
-
2009
- 2009-03-24 CN CN200920024107U patent/CN201387999Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102593817A (en) * | 2012-02-16 | 2012-07-18 | 安徽华正电气有限公司 | Microcomputer arc-extinguishing and over-voltage protection integrated device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204089187U (en) | A kind of Surge Protector | |
| CN201312112Y (en) | Overvoltage monitoring and comprehensive protective device for medium voltage power network | |
| CN105098748A (en) | Surge protector and method for enhancing temporary overvoltage endurance thereof | |
| CN2884641Y (en) | Overvoltage limit and small current earthing selective integrator of power transfer and distribution system | |
| CN203180518U (en) | Intelligent switch arc-extinguishing and overvoltage-protecting device | |
| CN201478821U (en) | Overvoltage protector for indirect neutral point-grounding power system in three-phase power grid | |
| CN201004553Y (en) | Arc over voltage limit for power transmission and distribution system and integrated device for small current grounding and line selection | |
| CN200953472Y (en) | Electric power transmitting and distributing system arc light over-voltage comprehensive limiting device | |
| CN102290805A (en) | Electric arc grounding overvoltage limiting device applied to medium-voltage distribution system | |
| CN201388042Y (en) | Central high-voltage switch equal-height cabinet | |
| CN202513569U (en) | Transformer neutral point overvoltage protector | |
| CN2722487Y (en) | Arc and resonance extinction and overvoltage protector | |
| CN201387999Y (en) | Central high-low cabinet type intelligent arc extinction, harmonic elimination and route selection device | |
| CN201388009Y (en) | Central isolated handcart type arc extinction, harmonic elimination and route selection device | |
| CN201887444U (en) | Electric grounding comprehensive protector for TXHPT | |
| CN203660531U (en) | Novel intelligent arc-extinguishing and over-voltage protection device | |
| CN202696141U (en) | Arc-extinction resonance-elimination device | |
| CN2559153Y (en) | Arc-extinguishing and overvoltage protection device | |
| CN205945048U (en) | Three -phase combined type over -voltage protector | |
| CN201388051Y (en) | GG-1A type arc extinguishing and harmonic eliminating line selection device | |
| CN206697931U (en) | A kind of arc-extinguishing harmonic-eliminating and overvoltage protection | |
| CN2638313Y (en) | Reactive compensation and arc-extinguishing resonance-extinguishing device | |
| Chi et al. | Comparison and analysis on Very Fast Transient Overvoltage based on 550kV GIS and 800kV GIS | |
| CN103368165A (en) | Arc elimination and harmonic elimination and overvoltage protector | |
| CN203135432U (en) | Arc-resonance extinction route-selecting over-voltage protection device |
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: 20100120 Termination date: 20140324 |