CN201388051Y - GG-1A type arc extinguishing and harmonic eliminating line selection device - Google Patents
GG-1A type arc extinguishing and harmonic eliminating line selection device Download PDFInfo
- Publication number
- CN201388051Y CN201388051Y CN200920024112U CN200920024112U CN201388051Y CN 201388051 Y CN201388051 Y CN 201388051Y CN 200920024112 U CN200920024112 U CN 200920024112U CN 200920024112 U CN200920024112 U CN 200920024112U CN 201388051 Y CN201388051 Y CN 201388051Y
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- CN
- China
- Prior art keywords
- cabinet
- selection device
- arc extinguishing
- voltage
- line selection
- 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
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Abstract
The utility model discloses a GG-1A type arc extinguishing and harmonic eliminating line selection device, belonging to the technical field of over voltage protection equipment. The GG-1A type arc extinguishing and harmonic eliminating line selection device comprises an intelligent controller, an over voltage protector and a vacuum contactor which are electrically connected in a cabinet, and is characterized in that a voltage transformer is also arranged in the cabinet. The GG-1A type arc extinguishing and harmonic eliminating line selection device can replace a voltage transformer cabinet to provide voltage monitoring function, replace an arc extinguishing coil to eliminate the intermittent arc grounding faults and to play arc grounding over voltage limiting function which the arc extinguishing coil does not have, and replace various harmonic eliminators to limit and restrict the over voltage due to resonance. Meanwhile, the GG-1A type arc extinguishing and harmonic eliminating line selection device has the function of a PT cabinet.
Description
Technical field
The utility model belongs to a kind of overvoltage protection; be specifically related to a kind of GG-1A formula extinguishing arc resonance eliminating wire-selection device; the utility model is mainly used in the electric power system of 3～35kV neutral non-effective grounding, provides reliably protecting to the various overvoltage of this class electrical network, particularly single phase intermittent arcing ground over-voltage and resonance overvoltage.
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 purpose of this utility model provides a kind of GG-1A formula extinguishing arc resonance eliminating wire-selection device, and this apparatus structure compactness is applicable in the GG-1A formula high-voltage board, is characterized in having simultaneously extinguishing arc resonance eliminating wire-selection and PT function.
The following technical scheme of the concrete employing of the utility model:
A kind of GG-1A formula extinguishing arc resonance eliminating wire-selection device is included in the intelligent controller, overvoltage protection device, the vacuum contactor that are electrically connected in the cabinet, it is characterized in that, also is provided with voltage transformer in the cabinet.
Cabinet of the present utility model top is provided with isolating switch, and bottom of cabinet bulk is provided with 2 groups of vacuum contactors, 1 group of high-voltage capacitor, and the cabinet panel is provided with isolator operating mechanism.Be provided with panelgirder in the cabinet, panelgirder is provided with high-tension fuse, high-voltage and current-limitation fuse.
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) has the restriction lightning overvoltage, the function of atmospheric over-voltage switching overvoltage.
3) the utility model can be realized the PT handoff functionality simultaneously.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is an electrical schematic of the present utility model.
Among the figure, 1 is isolating switch, and 2 is high-voltage and current-limitation fuse, and 3 is vacuum contactor, and 4 is panelgirder, and 5 is isolator operating mechanism, and 6 is high-tension fuse, and 7 is voltage transformer, and 8 is overvoltage protection device, and 9 is high-voltage capacitor, and 10 is intelligent controller.
Embodiment
Embodiment
As shown in Figure 1, a kind of GG-1A formula extinguishing arc resonance eliminating wire-selection device, comprise cabinet, the top of cabinet is provided with isolating switch 1, and the bottom is provided with 2 groups of vacuum contactors 3 and 1 group of high-voltage capacitor 9, and the cabinet front panel is provided with intelligent controller 10 and isolator operating mechanism 5, has panelgirder 4 in the cabinet, panelgirder 4 shapes similar " ten " word on panelgirder 4, is provided with high-tension fuse 6, high-voltage and current-limitation fuse 2.
Fig. 2 is an electrical schematic of the present utility model, and is basic identical with prior art.
Claims (3)
1. a GG-1A formula extinguishing arc resonance eliminating wire-selection device is included in the intelligent controller, overvoltage protection device, the vacuum contactor that are electrically connected in the cabinet, it is characterized in that, also is provided with voltage transformer in the cabinet.
2. GG-1A formula extinguishing arc resonance eliminating wire-selection device according to claim 1 is characterized in that the cabinet top is provided with isolating switch, and bottom of cabinet bulk is provided with 2 groups of vacuum contactors, 1 group of high-voltage capacitor, and the cabinet panel is provided with isolator operating mechanism.
3. GG-1A formula extinguishing arc resonance eliminating wire-selection device according to claim 1 is characterized in that be provided with panelgirder in the cabinet, panelgirder is provided with high-tension fuse, high-voltage and current-limitation fuse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920024112U CN201388051Y (en) | 2009-03-24 | 2009-03-24 | GG-1A type arc extinguishing and harmonic eliminating line selection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920024112U CN201388051Y (en) | 2009-03-24 | 2009-03-24 | GG-1A type arc extinguishing and harmonic eliminating line selection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201388051Y true CN201388051Y (en) | 2010-01-20 |
Family
ID=41580594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920024112U Expired - Fee Related CN201388051Y (en) | 2009-03-24 | 2009-03-24 | GG-1A type arc extinguishing and harmonic eliminating line selection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201388051Y (en) |
-
2009
- 2009-03-24 CN CN200920024112U patent/CN201388051Y/en not_active Expired - Fee Related
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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 |