CN207765947U - A kind of device preventing high voltage bus short trouble - Google Patents
A kind of device preventing high voltage bus short trouble Download PDFInfo
- Publication number
- CN207765947U CN207765947U CN201721358975.7U CN201721358975U CN207765947U CN 207765947 U CN207765947 U CN 207765947U CN 201721358975 U CN201721358975 U CN 201721358975U CN 207765947 U CN207765947 U CN 207765947U
- Authority
- CN
- China
- Prior art keywords
- voltage bus
- high voltage
- short trouble
- device preventing
- tension
- 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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- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model is a kind of device preventing high voltage bus short trouble, it is combined using high-voltage circuitbreaker and high-tension current inductor, pass through high-tension cable connecting circuit element, series connection access, access sequence are followed successively by electric elements, high-tension cable, high-tension current inductor, high-voltage circuitbreaker, high voltage bus.The utility model has the beneficial effects that：Using tranformer protection, the problem of becoming body interior because of station, stand with causing busbar to have a power failure after change primary side live part generation short circuit is avoided, the reliability of power supply is effectively increased.
Description
Technical field
The utility model belongs to Operation of Electric Systems equipment technical field, is related to a kind of high voltage bus short trouble of preventing
Device.
Background technology
Substation, high voltage switchyard are at present by station small capacity transformer, by disconnecting switch, through ordinary high pressure fuse
Access the mode of connection of high voltage bus.When power transformer interior fault or primary side occur under short-circuit conditions, common fuse does not have
Standby larger short circuit current breaking capacity, in the case that system short-circuit electric current it is larger can not reliable isolated fault point to cause mother
Line short circuit, causes large area blackout.The problem of being leaked out cruelly for this mode of connection that station local coordinate frame uses at present needs
The requirement of power network safety operation is adapted to using a kind of new mode of connection.
Utility model content
The purpose of this utility model is that overcoming protection domain and Fault Isolation under the existing mode of connection in view of the above problems
The deficiency of ability, provides a kind of more perfect, more reliable device, solves to cause the accident expansion because of access electrical equipment failure or short circuit
Big problem.
The technical solution of the utility model：A kind of device preventing high voltage bus short trouble, using high-voltage circuitbreaker and
High-tension current inductor is combined, and by high-tension cable connecting circuit element, series connection access, access sequence is followed successively by electric appliance member
Part, high-tension cable, high-tension current inductor, high-voltage circuitbreaker, high voltage bus.
The electric elements are small capacity transformers.
The small capacity transformer is dry type or oil-immersed transformer.
The small capacity transformer is mounted in independent cabinet space, high-tension cable pass through the threading hole of cabinet with
Small capacity transformer connects.
The utility model has the beneficial effects that：（1）Using tranformer protection, avoid because station becomes body interior, use of standing
The problem of causing busbar to have a power failure after change primary side live part generation short circuit, effectively increase the reliability of power supply.
（2）Using tranformer protection, overcoming ordinary high pressure fuse breaking capacity deficiency cannot reliable isolated fault
Problem.
Description of the drawings
Fig. 1 is the circuit connection diagram of the utility model；
1- high-tension cables, 2- small capacity transformers, 3- high-tension current inductors, 4- high-voltage circuitbreakers, 5- high voltage bus.
Specific implementation mode
Such as Fig. 1, a kind of device preventing high voltage bus short trouble, using high-voltage circuitbreaker 4 and high-tension current inductor 3
It is combined, by 1 connecting circuit element of high-tension cable, series connection access, access sequence is followed successively by electric elements, high-tension cable 1, height
Voltage current transformer 3, high-voltage circuitbreaker 4, high voltage bus 5.High-voltage circuitbreaker has drop-out current big and quick action etc. is excellent
Point, when transformer fault short circuit on fire or high-tension cable short circuit occurs, high-voltage circuitbreaker action message prevents failure propagation to mother
Line side.
The electric elements are small capacity transformers 2.The small capacity transformer 2 can be dry type or oil immersed type transformation
Device.Small capacity transformer breaks down because of inside to catch fire, load side short trouble, can be carried out by high-voltage circuitbreaker isolated fault
Protection.
Small capacity transformer is mounted in an independent cabinet space is isolated with other electrical equipments.Pass through high-tension cable
The form of connection realizes reliable isolation, after can completely avoid because short-circuit fire occurs for electrical equipment in cable vault, flue dust and arc
Light seals in the problem of other compartments lead to busbar short-circuit.
The utility model is being sent out for the station small capacity transformer in small current neutral grounding system access substation, switchyard
After the failures such as raw burn damages, catches fire, short circuit, often cause busbar short-circuit accident.The technology is by substation's small capacity transformer
Busbar is accessed in such a way that high-tension cable is through high-voltage circuitbreaker, after with small capacity transformer load side short trouble occurs for station
Wherein fault point is isolated rapidly for high-voltage circuitbreaker, it is possible to prevente effectively from being broken down with small capacity transformer because of station leads to power transformation
Short circuit accident occurs for busbar of standing, and this mode of connection further improves the reliability of power supply.
Claims (3)
1. a kind of device preventing high voltage bus short trouble, it is characterised in that：Using high-voltage circuitbreaker（4）And high-tension current is mutual
Sensor（3）It is combined, passes through high-tension cable（1）Connecting circuit element, series connection access, access sequence are followed successively by electric elements, height
Voltage cable（1）, high-tension current inductor（3）, high-voltage circuitbreaker（4）, high voltage bus（5）；Electric elements are mounted on an independence
Cabinet space in, high-tension cable（1）Threading hole across cabinet is connect with electric elements.
2. a kind of device preventing high voltage bus short trouble according to claim 1, it is characterised in that：The electric appliance member
Part is small capacity transformer（2）.
3. a kind of device preventing high voltage bus short trouble according to claim 2, it is characterised in that：The low capacity
Transformer（2）It is dry type or oil-immersed transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721358975.7U CN207765947U (en) | 2017-10-20 | 2017-10-20 | A kind of device preventing high voltage bus short trouble |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721358975.7U CN207765947U (en) | 2017-10-20 | 2017-10-20 | A kind of device preventing high voltage bus short trouble |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207765947U true CN207765947U (en) | 2018-08-24 |
Family
ID=63178690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721358975.7U Expired - Fee Related CN207765947U (en) | 2017-10-20 | 2017-10-20 | A kind of device preventing high voltage bus short trouble |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207765947U (en) |
-
2017
- 2017-10-20 CN CN201721358975.7U patent/CN207765947U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180824 Termination date: 20191020 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |