CN107394768A - The used current segmenting formula voltage protector protection circuit of vacuum circuit breaker - Google Patents
The used current segmenting formula voltage protector protection circuit of vacuum circuit breaker Download PDFInfo
- Publication number
- CN107394768A CN107394768A CN201710756517.7A CN201710756517A CN107394768A CN 107394768 A CN107394768 A CN 107394768A CN 201710756517 A CN201710756517 A CN 201710756517A CN 107394768 A CN107394768 A CN 107394768A
- Authority
- CN
- China
- Prior art keywords
- aerial drainage
- branch road
- drainage branch
- protection circuit
- current monitoring
- 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.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/06—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using spark-gap arresters
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- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses the used current segmenting formula voltage protector protection circuit of vacuum circuit breaker, belong to electric prospection technical field.Including the first aerial drainage branch road, the 3rd aerial drainage branch road, the second aerial drainage branch road and aerial drainage extension wire, the output end of the first aerial drainage branch road, the second aerial drainage branch road and the 3rd aerial drainage branch circuit parallel connection in power supply main road；Second current monitoring comparator and nonlinear resistance are separately positioned on the current input terminal and output end of the first aerial drainage branch road；Power supply main road and ground path are electrically accessed in aerial drainage extension wire and the first aerial drainage branch circuit parallel connection, the both ends of aerial drainage extension wire respectively；Power supply main road is provided with the first current monitoring comparator；It is provided between the 3rd leg and ground path of first current monitoring comparator and starts circuit.The present invention is mutually protected by discharging gap and nonlinear resistance, and is equipped with stand-by circuit, and up time electric current caused by moment overload voltage is dumped, circuit and electrical equipment are protected.
Description
Technical field
The invention belongs to technical field, and electricity is protected more particularly to the used current segmenting formula voltage protector of vacuum circuit breaker
Road.
Background technology
Overvoltage protection is a kind of new overvoltage protection device, and it is mainly used in generating, power supply and enterprise
In electricity system, to electrical equipments such as generator, transformer, switch, bus, motor, capacitors, except limitation air is excessively electric
Pressure protection is outer, while can also limit the switching overvoltage of power system, to alternate and relatively overvoltage, can play reliable
Restriction effect.Overvoltage protection product, due to alternate and relatively defencive function, so as to successfully solve
Switching overvoltage is to apparatus insulated the problem of endangering because of caused by Vacuum Circuit Breaker.For China electric utility made it is huge
Big contribution.
The content of the invention
It is an object of the invention to provide the used current segmenting formula voltage protector protection circuit of vacuum circuit breaker, by,
Solve the problems, such as existing.
In order to solve the above technical problems, the present invention is achieved by the following technical solutions：
The present invention is the used current segmenting formula voltage protector protection circuit of vacuum circuit breaker, including the first aerial drainage branch road,
3rd aerial drainage branch road, the second aerial drainage branch road, aerial drainage extension wire, the first aerial drainage branch road, the second aerial drainage branch road and the 3rd are let out
Flow output end of the branch circuit parallel connection in power supply main road；The first aerial drainage branch road is provided between the second current monitoring comparator, electric discharge
Gap and nonlinear resistance, the second current monitoring comparator and nonlinear resistance are separately positioned on the electric current of the first aerial drainage branch road
Input and output end；The 3rd current monitoring comparator and are respectively equipped with the second aerial drainage branch road and the 3rd aerial drainage branch road
Four current monitoring comparators；The aerial drainage extension wire and the first aerial drainage branch circuit parallel connection, the both ends point of the aerial drainage extension wire
Not not electrically access power supply main road and ground path；The power supply main road is provided with the first current monitoring comparator；First electricity
It is provided between the 3rd leg and ground path of stream monitoring comparator and starts circuit；The startup circuit is provided with electromagnetism relay
Device, gap armature is installed on the electromagnetic relay；The gap armature is located on aerial drainage extension wire.
Further, discharging gap and nonlinear resistance are equipped with the second aerial drainage branch road and the 3rd aerial drainage branch road.
The discharging gap uses copper complexing gold to be used as contact material, and the nonlinear resistance is formed using zinc oxide material.
Further, the first current monitoring comparator, the second current monitoring comparator, the 3rd current monitoring comparator
And the 4th current monitoring comparator leg and microprocessor between be connected.
Further, the ground path is provided with discharging gap and nonlinear resistance.
Further, the startup circuit is provided with protective resistance.
The invention has the advantages that：
The present invention uses four star connections, can substantially reduce alternate overvoltage, the reliability of protection greatly improves, and uses oxygen
Change the structure of zinc nonlinear resistance and discharging gap, both is protected each other.Discharging gap makes the chargeability of ZnO resistors be
Zero, the nonlinear characteristic of ZnO resistors makes discharging gap no longer undertake arc extinguishing task without afterflow, discharging gap after acting, carry again
The high service life of product.
Certainly, any product for implementing the present invention it is not absolutely required to reach all the above advantage simultaneously.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, used required for being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for ability
For the those of ordinary skill of domain, on the premise of not paying creative work, it can also be obtained according to these accompanying drawings other attached
Figure.
Fig. 1 is the circuit diagram of the present invention；
In accompanying drawing, the list of parts representated by each label is as follows：
1- power supply main roads, 2- aerial drainage extension wires, 3- the first aerial drainage branch roads, 4- ground paths, the aerial drainage branch roads of 5- the 3rd, 6-
Second aerial drainage branch road, 7- microprocessors, 8- electromagnetic relays, 9- protective resistances, 10- discharging gaps, 11- nonlinear resistances, 12-
Start circuit, 13- gaps armature, 101- the first current monitoring comparators, 301- the second current monitoring comparators, the electricity of 401- the 3rd
Stream monitoring comparator, the current monitoring comparators of 501- the 4th.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained all other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Referring to shown in Fig. 1, the present invention is the used current segmenting formula voltage protector protection circuit of vacuum circuit breaker, including
First aerial drainage branch road 3, the 3rd aerial drainage branch road 5, the second aerial drainage branch road 6, aerial drainage extension wire 2,
First aerial drainage branch road 3, the second aerial drainage branch road 6 and the 3rd aerial drainage branch road 5 are connected in parallel on the output end of power supply main road 1；
First aerial drainage branch road 3 is provided with the second current monitoring comparator 301, discharging gap 10 and nonlinear resistance 11, the
Two current monitoring comparators 301 and nonlinear resistance 11 are separately positioned on the current input terminal and output end of the first aerial drainage branch road 3；
The 3rd current monitoring comparator 401 and the 4th electric current are respectively equipped with second aerial drainage branch road 6 and the 3rd aerial drainage branch road 5
Monitor comparator 501；
Aerial drainage extension wire 2 is in parallel with the first aerial drainage branch road 3, the both ends electrically access power supply respectively of aerial drainage extension wire 2
Main road 1 and ground path 4；
Power supply main road 1 is provided with the first current monitoring comparator 101；3rd leg of the first current monitoring comparator 101
It is provided between ground path 4 and starts circuit 12；
Start circuit 12 and be provided with electromagnetic relay 8, gap armature 13 is installed on electromagnetic relay 8；
Gap armature 13 is located on aerial drainage extension wire 2.
Wherein, discharging gap 10 and nonlinear resistance 11 are equipped with the second aerial drainage branch road 6 and the 3rd aerial drainage branch road 5.Put
Electric gap 10 uses copper complexing gold to be used as contact material, and nonlinear resistance 11 is formed using zinc oxide material.
Wherein, the first current monitoring comparator 101, the second current monitoring comparator 301, the 3rd current monitoring comparator
401 and the 4th current monitoring comparator 501 leg and microprocessor 7 between be connected.
Wherein, ground path 4 is provided with discharging gap 10 and nonlinear resistance 11.
Wherein, start circuit 12 and be provided with protective resistance 9.
One of the present embodiment has particular application as：After dress installation is connected, the vacuum switch on protected circuit
During disconnection, the overload voltage of moment is produced, when electric current is through protection circuit, overload current punctures discharging gap 10, and then flows through
Nonlinear resistance 11, the resistance value of nonlinear resistance 11 diminish, and overload current are imported into ground wire by three aerial drainage circuits, suitable
When overloads voltage elimination, and caused normal current value is not enough to disruptive discharge gap 10 afterwards, and then passes through normal circuit, when
During three bleeder circuit damages, the electric current of the first pyroelectric monitor comparator 101 monitoring set on main road 1 of powering exceedes normal current
When, and the current value that the current monitoring comparator installed on aerial drainage branch road measures is zero, it is right after being analyzed and processed through microprocessor 7
Start circuit 12 to discharge, and then cause electromagnetic relay 8 works gap armature 13 is closed, aerial drainage extension wire 2 is powered, mistake
Carry electric current and be transmitted to progress electric current inclination on ground wire through aerial drainage extension wire 2, and then electrical appliance is protected.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means
At least one implementation of the present invention is contained in reference to specific features, structure, material or the feature that the embodiment or example describe
In example or example.In this manual, identical embodiment or example are not necessarily referring to the schematic representation of above-mentioned term.
Moreover, specific features, structure, material or the feature of description can close in any one or more embodiments or example
Suitable mode combines.
Present invention disclosed above preferred embodiment is only intended to help and illustrates the present invention.Preferred embodiment is not detailed
All details are described, it is only described embodiment also not limit the invention.Obviously, according to the content of this specification,
It can make many modifications and variations.This specification is chosen and specifically describes these embodiments, is to preferably explain the present invention
Principle and practical application so that skilled artisan can be best understood by and utilize the present invention.The present invention is only
Limited by claims and its four corner and equivalent.
Claims (5)
1. the used current segmenting formula voltage protector protection circuit protection circuit device protection circuit of vacuum circuit breaker, including the first aerial drainage
Branch road (3), the 3rd aerial drainage branch road (5), the second aerial drainage branch road (6), aerial drainage extension wire (2), it is characterised in that：
The first aerial drainage branch road (3), the second aerial drainage branch road (6) and the 3rd aerial drainage branch road (5) are connected in parallel on the defeated of power supply main road (1)
Go out end；
The first aerial drainage branch road (3) is provided with the second current monitoring comparator (301), discharging gap (10) and nonlinear resistance
(11), the second current monitoring comparator (301) and nonlinear resistance (11) are separately positioned on the electricity of the first aerial drainage branch road (3)
Flow input and output end；
The 3rd current monitoring comparator (401) and are respectively equipped with the second aerial drainage branch road (6) and the 3rd aerial drainage branch road (5)
Four current monitoring comparators (501)；
The aerial drainage extension wire (2) is in parallel with the first aerial drainage branch road (3), and the both ends of the aerial drainage extension wire (2) are electric respectively
Property access power supply main road (1) and ground path (4)；
The power supply main road (1) is provided with the first current monitoring comparator (101)；The first current monitoring comparator (101)
The 3rd leg and ground path (4) between be provided with start circuit (12)；
The startup circuit (12) is provided with electromagnetic relay (8), and gap armature is provided with the electromagnetic relay (8)
(13)；
The gap armature (13) is located on aerial drainage extension wire (2).
2. the used current segmenting formula voltage protector protection circuit protection circuit device of vacuum circuit breaker according to claim 1 is protected
Protection circuit, it is characterised in that be equipped with the second aerial drainage branch road (6) and the 3rd aerial drainage branch road (5) discharging gap (10) and
Nonlinear resistance (11).The discharging gap (10) uses copper complexing gold to be used as contact material, and the nonlinear resistance (11) makes
Formed with zinc oxide material.
3. the used current segmenting formula voltage protector protection circuit protection circuit device of vacuum circuit breaker according to claim 1 is protected
Protection circuit, it is characterised in that the first current monitoring comparator (101), the second current monitoring comparator (301), the 3rd electricity
It is connected between stream monitoring comparator (401) and the leg and microprocessor (7) of the 4th current monitoring comparator (501).
4. the used current segmenting formula voltage protector protection circuit protection circuit device of vacuum circuit breaker according to claim 1 is protected
Protection circuit, it is characterised in that the ground path (4) is provided with discharging gap (10) and nonlinear resistance (11).
5. the used current segmenting formula voltage protector protection circuit protection circuit device of vacuum circuit breaker according to claim 1 is protected
Protection circuit, it is characterised in that the startup circuit (12) is provided with protective resistance (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710756517.7A CN107394768B (en) | 2017-08-29 | 2017-08-29 | Overcurrent sectional type voltage protector protection circuit for vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710756517.7A CN107394768B (en) | 2017-08-29 | 2017-08-29 | Overcurrent sectional type voltage protector protection circuit for vacuum circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107394768A true CN107394768A (en) | 2017-11-24 |
| CN107394768B CN107394768B (en) | 2020-04-07 |
Family
ID=60346494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710756517.7A Active CN107394768B (en) | 2017-08-29 | 2017-08-29 | Overcurrent sectional type voltage protector protection circuit for vacuum circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107394768B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108493917A (en) * | 2018-03-23 | 2018-09-04 | 湖南大学 | Novel aerial drainage control device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2593439Y (en) * | 2003-01-03 | 2003-12-17 | 徐成飞 | Combined intelligent overvoltage protector |
| CN201868869U (en) * | 2010-12-02 | 2011-06-15 | 合肥伟创电力技术有限公司 | Combined type large-capacity self-separating overvoltage protector |
| CN202633933U (en) * | 2012-06-13 | 2012-12-26 | 合肥徽力电气技术有限公司 | Surge protector circuit of low-voltage power supply |
| CN203951159U (en) * | 2014-06-20 | 2014-11-19 | 天津协盛科技股份有限公司 | A kind of surge protector redundant system |
-
2017
- 2017-08-29 CN CN201710756517.7A patent/CN107394768B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2593439Y (en) * | 2003-01-03 | 2003-12-17 | 徐成飞 | Combined intelligent overvoltage protector |
| CN201868869U (en) * | 2010-12-02 | 2011-06-15 | 合肥伟创电力技术有限公司 | Combined type large-capacity self-separating overvoltage protector |
| CN202633933U (en) * | 2012-06-13 | 2012-12-26 | 合肥徽力电气技术有限公司 | Surge protector circuit of low-voltage power supply |
| CN203951159U (en) * | 2014-06-20 | 2014-11-19 | 天津协盛科技股份有限公司 | A kind of surge protector redundant system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108493917A (en) * | 2018-03-23 | 2018-09-04 | 湖南大学 | Novel aerial drainage control device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107394768B (en) | 2020-04-07 |
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