CN208890339U - A kind of medium-voltage distribution circuit short trouble self-healing cabinet - Google Patents
A kind of medium-voltage distribution circuit short trouble self-healing cabinet Download PDFInfo
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- CN208890339U CN208890339U CN201821625906.2U CN201821625906U CN208890339U CN 208890339 U CN208890339 U CN 208890339U CN 201821625906 U CN201821625906 U CN 201821625906U CN 208890339 U CN208890339 U CN 208890339U
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- pressure relief
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- relief plate
- healing
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Abstract
A kind of medium-voltage distribution circuit short trouble self-healing cabinet; it is related to operation of power networks and protection technique field; it is characterized by comprising cabinet body, cabinet body, bus-bar room pressure relief plate, outlet room pressure relief plate, auxiliary bus-bar joint, brows, three-phase casing, electrified sensor, stationary contact head cartridge, has static contact, current transformer, voltage transformer, voltage transformer fuse, grounding switch, panel heater, protector, fast breaker, secondary cable cable-through hole, panel heater at switch gear room's pressure relief plate.The utility model switching speed is fast, and it is convenient, convenient to be overlapped, and stability is good, and detectability is strong.
Description
Technical field:
The utility model relates to operations of power networks and protection technique field, and in particular to a kind of medium-voltage distribution circuit short trouble
Self-healing cabinet.
Background technique:
In 80~nineties of last century, power distribution network based on overhead line, transient fault accounted for whole failures 80~
90% or so, in order to reduce the trip-out rate of transient fault, power supply reliability is improved, is widely used in automatic reclosing in feeder assembly
The principle of brake gear, such device is very simple, and be delayed breaker of a period of time automatic reclosing after fault trip, if
Failure vanishes, then route restores electricity, for example permanent fault, then breaker receives the instruction tripping of relay protection.
But this reclosing device is only time-delay closing, that is, so-called " blind throwing ", it can not judge to be overlapped
Route be permanent fault or transient fault, arrive permanent fault once closing again, no matter be all primary to system or equipment
Huge short-circuit impact.
And electrical equipment, especially with the equipment of winding coil, such as generator, transformer etc., short circuit are born
Ability is fairly limited, and short circuit each time can all cause coil that in various degree offside occurs or deforms, short-circuit current rush several times,
It is sufficient to make equipment to be damaged, results in significant economic losses.
Utility model content:
The technical problem to be solved by the utility model is to overcome existing technological deficiency to provide a kind of structurally reasonable, peace
Dress is convenient, detects a kind of simple medium-voltage distribution circuit short trouble self-healing cabinet.
The following technical solution is employed for technical problem to be solved in the utility model to realize:
A kind of medium-voltage distribution circuit short trouble self-healing cabinet, it is characterised in that: including cabinet body, the outer upper end of cabinet body is equipped with switch
Room pressure relief plate is provided with bus-bar room pressure relief plate by switch gear room's pressure relief plate, outlet room pressure relief plate, institute is provided with by bus-bar room pressure relief plate
The switch gear room pressure relief plate other side is stated equipped with auxiliary bus-bar joint, auxiliary bus-bar joint is provided with brows outside；
Side is equipped with three-phase casing in the cabinet body, is equipped with electrified sensor, electrified sensor on the three-phase casing
Side be provided with stationary contact head cartridge, static contact is equipped in stationary contact head cartridge, stationary contact head cartridge side is provided with current transformer, quiet
Voltage transformer is equipped with below contact box, voltage transformer side is equipped with voltage transformer fuse, and the voltage transformer is molten
It is provided with grounding switch below disconnected device, panel heater is provided with below grounding switch, the side of grounding switch is equipped with protector；
The other side is equipped with fast breaker in the cabinet body, is equipped with secondary cable cable-through hole above fast breaker, quickly
The side of breaker is provided with panel heater；
The protector is BOD over-voltage protector；
The three-phase casing is divided into three-phase sleeve A, three-phase casing B, three-phase cannula C, and the three-phase sleeve A, three are nested
It is connected between pipe B, three-phase cannula C by bronze medal；
It is connected between the current transformer and grounding switch by electrified sensor, current transformer is connected by bronze medal
Electrified sensor, grounding switch connect electrified sensor by bronze medal；
The current transformer, voltage transformer fuse connect static contact by bronze medal.
The utility model has the following beneficial effects: common switch is single-way switch, the switch of the application is two-way switch, and
The switching speed of the application is fast, and it is convenient, convenient to be overlapped, and stability is good, and detectability is strong.
The utility model can be vortexed driving breaker examination by split-phase and close failure phase after short trouble occurs for route,
Obtain failure phase electric parameter, the failure boundary conditions correlation with various features determines that failure is transient fault or permanent
Property failure, selectively reclosing realizes fault self-recovery.
Meanwhile current over-zero separating brake may be implemented in the vortex driving breaker of split-phase movement, reduces the ablation of arc-chutes, and
It realizes and closes a floodgate in voltage over zero, reduction system is shoved.
Detailed description of the invention:
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the structural schematic diagram of three casings of the utility model.
Specific embodiment:
In order to be easy to understand the technical means, creative features, achievement of purpose, and effectiveness of the utility model, under
Face combines and is specifically illustrating, and the utility model is further described.
Embodiment 1
As shown in Figure 1 and Figure 2, a kind of medium-voltage distribution circuit short trouble self-healing cabinet, including cabinet body 100, outside cabinet body 100
Upper end is equipped with switch gear room's pressure relief plate 9, is provided with bus-bar room pressure relief plate 10 by switch gear room's pressure relief plate 9, sets by bus-bar room pressure relief plate 10
It is equipped with outlet room pressure relief plate 11,9 other side of switch gear room's pressure relief plate is equipped with auxiliary bus-bar joint 5, is provided with outside auxiliary bus-bar joint 5
Brows 4；
Side is equipped with three-phase casing in the cabinet body 100, and electrified sensor 1, band fax are equipped on the three-phase casing
The side of sensor 1 is provided with stationary contact head cartridge 6, is equipped with static contact 12 in stationary contact head cartridge 6,6 side of stationary contact head cartridge is provided with electricity
Current transformer 7, voltage transformer 10 is equipped with below stationary contact head cartridge 6, and 10 side of voltage transformer is equipped with voltage transformer fuse
18, grounding switch 16 is provided with below the voltage transformer fuse 18, is provided with panel heater below grounding switch 16
13, the side of grounding switch 16 is equipped with protector 8；
The other side is equipped with fast breaker 2 in the cabinet body 100, is equipped with secondary cable cable-through hole above fast breaker 2
3, the side of fast breaker 2 is provided with panel heater 13；
The protector 8 is BOD over-voltage protector；
The three-phase casing is divided into three-phase sleeve A, three-phase casing B, three-phase cannula C, and the three-phase sleeve A, three are nested
It is connected between pipe B, three-phase cannula C by bronze medal 20；
It is connected between the current transformer 7 and grounding switch 16 by electrified sensor 1, current transformer 7 passes through copper
Board 20 connects electrified sensor 1, and grounding switch 16 connects electrified sensor 1 by bronze medal 20；
The current transformer 7, voltage transformer fuse 18 connect static contact 12 by bronze medal 20.
Embodiment 2
As shown in Figure 1 and Figure 2, a kind of medium-voltage distribution circuit short trouble self-healing cabinet, including cabinet body 100, outside cabinet body 100
Upper end is equipped with switch gear room's pressure relief plate 9, is provided with bus-bar room pressure relief plate 10 by switch gear room's pressure relief plate 9, sets by bus-bar room pressure relief plate 10
It is equipped with outlet room pressure relief plate 11,9 other side of switch gear room's pressure relief plate is equipped with auxiliary bus-bar joint 5, is provided with outside auxiliary bus-bar joint 5
Brows 4；
Side is equipped with three-phase casing in the cabinet body 100, and electrified sensor 1, band fax are equipped on the three-phase casing
The side of sensor 1 is provided with stationary contact head cartridge 6, is equipped with static contact 12 in stationary contact head cartridge 6,6 side of stationary contact head cartridge is provided with electricity
Current transformer 7, voltage transformer 10 is equipped with below stationary contact head cartridge 6, and 10 side of voltage transformer is equipped with voltage transformer fuse
18, grounding switch 16 is provided with below the voltage transformer fuse 18, is provided with panel heater below grounding switch 16
13, the side of grounding switch 16 is equipped with protector 8, and the three-phase casing is divided into three-phase sleeve A, three-phase casing B, three-phase cannula C,
The three-phase sleeve A, three-phase casing B, it is connected by bronze medal 20 between three-phase cannula C, the other side is equipped in the cabinet body 100
Fast breaker 2 is equipped with secondary cable cable-through hole 3 above fast breaker 2, and the side of fast breaker 2 is provided with plate and adds
Hot device 13；
It is connected between the current transformer 7 and grounding switch 16 by electrified sensor 1, current transformer 7 passes through copper
Board 20 connects electrified sensor 1, and grounding switch 16 connects electrified sensor 1 by bronze medal 20；
The current transformer 7, voltage transformer fuse 18 connect static contact 12 by bronze medal 20.
To completion " cross zero breaking ", breaker must have two big conditions, first be exactly that movement speed must be fast, because
One cycle is 20ms, and zero crossing appears near half of cycle, therefore it is required that the intrinsic opening time of switch is necessarily less than
10ms, if it is considered that the time of the signal processing time of controller and sending signal, it is necessary to so that the opening time control of breaker
System is within 6ms.Additionally, due to differing 120 degree between three-phase alternating current, in addition in non-three-phase shortcircuit, a tripping failure is mutually broken
Road device, thus require breaker three-phase can not simultaneously separating brake, it is necessary to be distinguish, then breaker must have three sets
Mechanism respectively drives the arc-chutes moving contact in each pole.
Breaker is other than needing to have above-mentioned function, and to complete reclosing movement, the energy storage of switch must assure that
At the circulation of a complete O-0.1s-CO, this requires the mechanisms of breaker must at least guarantee to complete 2 times points in 0.1s
Lock operation.
In addition in reclosing operation, controller is capable of the zero crossing of intelligent predicting failure phase, determines suitable switching angle,
Ensure to close a floodgate near zero-crossing point, avoids switch from closing a floodgate in the short-circuit state and cause to damage.
The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above.Current row
The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
It will have various changes and improvements, these various changes and improvements fall within the scope of the claimed invention.The utility model
Claimed range is defined by the appending claims and its equivalent thereof.
Claims (5)
1. a kind of medium-voltage distribution circuit short trouble self-healing cabinet, it is characterised in that: including cabinet body, the outer upper end of cabinet body is equipped with switch gear room
Pressure relief plate is provided with bus-bar room pressure relief plate by switch gear room's pressure relief plate, outlet room pressure relief plate is provided with by bus-bar room pressure relief plate, described
The switch gear room pressure relief plate other side is equipped with auxiliary bus-bar joint, and brows are provided with outside auxiliary bus-bar joint；
Side is equipped with three-phase casing in the cabinet body, is equipped with electrified sensor on the three-phase casing, and the one of electrified sensor
Side is provided with stationary contact head cartridge, is equipped with static contact in stationary contact head cartridge, stationary contact head cartridge side is provided with current transformer, static contact
Voltage transformer is equipped with below box, voltage transformer side is equipped with voltage transformer fuse, the voltage transformer fuse
Lower section is provided with grounding switch, and panel heater is provided with below grounding switch, and the side of grounding switch is equipped with protector；
The other side is equipped with fast breaker in the cabinet body, is equipped with secondary cable cable-through hole above fast breaker, quicks break
The side of device is provided with panel heater.
2. a kind of medium-voltage distribution circuit short trouble self-healing cabinet according to claim 1, it is characterised in that: the protector
For BOD over-voltage protector.
3. a kind of medium-voltage distribution circuit short trouble self-healing cabinet according to claim 1, it is characterised in that: described three are nested
Pipe is divided into three-phase sleeve A, three-phase casing B, three-phase cannula C, the three-phase sleeve A, three-phase casing B, leads between three-phase cannula C
Cross bronze medal connection.
4. a kind of medium-voltage distribution circuit short trouble self-healing cabinet according to claim 1, it is characterised in that: the electric current is mutual
It is connected between sensor and grounding switch by electrified sensor, current transformer connects electrified sensor, earthing by bronze medal
Lock connects electrified sensor by bronze medal.
5. a kind of medium-voltage distribution circuit short trouble self-healing cabinet according to claim 1, it is characterised in that: the electric current is mutual
Sensor, voltage transformer fuse connect static contact by bronze medal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821625906.2U CN208890339U (en) | 2018-09-30 | 2018-09-30 | A kind of medium-voltage distribution circuit short trouble self-healing cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821625906.2U CN208890339U (en) | 2018-09-30 | 2018-09-30 | A kind of medium-voltage distribution circuit short trouble self-healing cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208890339U true CN208890339U (en) | 2019-05-21 |
Family
ID=66515115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821625906.2U Active CN208890339U (en) | 2018-09-30 | 2018-09-30 | A kind of medium-voltage distribution circuit short trouble self-healing cabinet |
Country Status (1)
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|---|---|
| CN (1) | CN208890339U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110896248A (en) * | 2019-11-15 | 2020-03-20 | 深圳供电局有限公司 | Distributed distribution protection self-healing cabinet |
| CN111193216A (en) * | 2019-12-20 | 2020-05-22 | 天津平高智能电气有限公司 | Arc extinction switch cabinet |
-
2018
- 2018-09-30 CN CN201821625906.2U patent/CN208890339U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110896248A (en) * | 2019-11-15 | 2020-03-20 | 深圳供电局有限公司 | Distributed distribution protection self-healing cabinet |
| CN110896248B (en) * | 2019-11-15 | 2021-12-07 | 深圳供电局有限公司 | Distributed distribution protection self-healing cabinet |
| CN111193216A (en) * | 2019-12-20 | 2020-05-22 | 天津平高智能电气有限公司 | Arc extinction switch cabinet |
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| TR01 | Transfer of patent right |
Effective date of registration: 20200320 Address after: 231100 Shuangfeng Road North 28, Shuangfeng Economic Development Zone, Changfeng County, Hefei, Anhui Patentee after: ANHUI HEKAI ELECTRICAL TECHNOLOGY Co.,Ltd. Address before: Songjiang District Minyi road 201612 Shanghai City No. 201 Building 1 Room 302 Patentee before: SHANGHAI HEKAI POWER PROTECTION EQUIPMENT Co.,Ltd. |