CN201388042Y - Central high-voltage switch equal-height cabinet - Google Patents
Central high-voltage switch equal-height cabinet Download PDFInfo
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- CN201388042Y CN201388042Y CN200920024108U CN200920024108U CN201388042Y CN 201388042 Y CN201388042 Y CN 201388042Y CN 200920024108 U CN200920024108 U CN 200920024108U CN 200920024108 U CN200920024108 U CN 200920024108U CN 201388042 Y CN201388042 Y CN 201388042Y
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Abstract
The utility model relates to a central high-voltage switch equal-height cabinet, belonging to the technical field of over-voltage protection devices. The equal-height cabinet 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 high-energy voltage limiters; an intelligent controller, an isolating switch, a high-voltage current-limiting fuse and an over-voltage protector are arranged in the cabinet body; and the cabinet body is the equal-height cabinet. The equal-height cabinet has compact structure, 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.
Description
Technical field
The utility model belongs to a kind of overvoltage protection, is specifically related to high cube containers such as a kind of mid-high-voltage switch gear.
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 high cube containers such as a kind of mid-high-voltage switch gear; 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:
High cube containers such as a kind of mid-high-voltage switch gear comprise cabinet, it is characterized in that,
Bottom of cabinet bulk is provided with 2 groups of vacuum contactors and 1 group of high energy voltage limiter;
On in the cabinet intelligent controller, isolating switch, high-voltage and current-limitation fuse, overvoltage protection device are set;
Described cabinet is to wait high cube container.
Described cabinet has panel, has 3 groups of sleeve pipes, electromagnetic lock and high-voltage charge display devices 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) 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 is vacuum contactor, and 2 is the high energy voltage limiter, and 3 is high-voltage and current-limitation fuse, 4 isolating switches, and 5 is intelligent controller, and 6 is overvoltage protection device, and 7 is electrification display, and 8 is electromagnetic lock, 9 is sleeve pipe.
Embodiment
Embodiment
As shown in Figure 1, high cube containers such as a kind of mid-high-voltage switch gear comprise cabinet, and bottom of cabinet bulk is provided with two groups of vacuum contactors 1 and one group of high energy voltage limiter 2; On in the cabinet intelligent controller 5, isolating switch 4, high-voltage and current-limitation fuse 3, overvoltage protection device 6 are set; Described cabinet is to wait high cube container.
As shown in Figure 2, described cabinet has panel, has 3 groups of sleeve pipes 9, electromagnetic lock 8 and high-voltage charge display device 7 on the panel.
The utility model electrical schematic is same as the prior art.
Claims (2)
1. high cube containers such as mid-high-voltage switch gear comprise cabinet, it is characterized in that,
Bottom of cabinet bulk is provided with 2 groups of vacuum contactors and 1 group of high energy voltage limiter;
On in the cabinet intelligent controller, isolating switch, high-voltage and current-limitation fuse, overvoltage protection device are set;
Described cabinet is to wait high cube container.
2. high cube container such as mid-high-voltage switch gear according to claim 1 is characterized in that described cabinet has panel, has 3 groups of sleeve pipes, electromagnetic lock and high-voltage charge display devices on the panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920024108U CN201388042Y (en) | 2009-03-24 | 2009-03-24 | Central high-voltage switch equal-height cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920024108U CN201388042Y (en) | 2009-03-24 | 2009-03-24 | Central high-voltage switch equal-height cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201388042Y true CN201388042Y (en) | 2010-01-20 |
Family
ID=41580585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920024108U Expired - Fee Related CN201388042Y (en) | 2009-03-24 | 2009-03-24 | Central high-voltage switch equal-height cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201388042Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102709899A (en) * | 2012-06-06 | 2012-10-03 | 淄博联诚电力科技有限公司 | Intelligent arc extinction and resonance extinction overvoltage protection integral optimization device |
| CN106129989A (en) * | 2016-08-28 | 2016-11-16 | 安徽普天电力科技有限公司 | A kind of three phase combined over-voltage protector |
-
2009
- 2009-03-24 CN CN200920024108U patent/CN201388042Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102709899A (en) * | 2012-06-06 | 2012-10-03 | 淄博联诚电力科技有限公司 | Intelligent arc extinction and resonance extinction overvoltage protection integral optimization device |
| CN106129989A (en) * | 2016-08-28 | 2016-11-16 | 安徽普天电力科技有限公司 | A kind of three phase combined over-voltage protector |
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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 |