CN208028562U - High-voltage AC breaker full voltage closes device - Google Patents
High-voltage AC breaker full voltage closes device Download PDFInfo
- Publication number
- CN208028562U CN208028562U CN201820208647.7U CN201820208647U CN208028562U CN 208028562 U CN208028562 U CN 208028562U CN 201820208647 U CN201820208647 U CN 201820208647U CN 208028562 U CN208028562 U CN 208028562U
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- China
- Prior art keywords
- capacitor
- sensing element
- voltage
- graphite nodule
- charging device
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- Expired - Fee Related
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Abstract
A kind of high-voltage AC breaker full voltage closes device, it includes auxiliary switch, connection busbar, capacitor C1, capacitor C2, Ca, resistance R1, graphite nodule, sensing element L1, sensing element L2, igniting core and pre-charging device, it is characterized in that：Connection busbar, capacitor C1, capacitor C2, graphite nodule, sensing element L1, sensing element L2 and igniting core composition close device, capacitor C1 is connected in parallel on the both ends of graphite nodule, graphite nodule and igniting core, sensing element L1, capacitor C2, sensing element L2 closed circuits in series, auxiliary switch, pre-charging device are respectively arranged at the both ends for closing device.When the utility model is closed by capacitor C1 and capacitor C2 chargings, the product tested being needed to apply outside in advance at voltage peak, longest prebreakdown electric arc is can result in, the ITMC of requirement is provided（Subtransient making current）, symmetrical short circuit current is generated, relevant criterion requirement is met.It is simple with structure and principle, the advantages of easy to implement and reliable operation.
Description
Technical field
The utility model is related to high-voltage switch gear technical field, especially a kind of high-voltage AC breaker full voltage closes dress
It sets.
Background technology
High-voltage AC breaker is control and the protection equipment of electric system.Under normal running (operation) conditions, it can hold for a long time
It loads with charged current, controls putting into operation or exiting for loaded line and electrical equipment；When short circuit and step-out failure occur for system, open circuit
Device is under the instruction of protective relaying device, within the extremely short time, short trouble is cut off and is carried out faulted line segment effective
Isolation, to keep system operation normal.Breaker is when carrying out type approval test T100s, including short circuit closes and cut-off two sides
The experimental condition in face can be disposably completed at the same time in straightway testing, but when being limited by pilot system capacity of short circuit, can only
By the way of synthetic test, T100s is split as 100s (a) and two parts 100s (b), wherein closing operation part and being
100s(a).Making capability in order to verify breaker should meet two requirements：1）Breaker can be applied and be closed at voltage peak outside
It closes, leads to longest prebreakdown electric arc, generate symmetrical short circuit current.2）Breaker can close at the zero of applied voltage
It closes, no prebreakdown, generates asymmetrical short circuit current completely.The former has maximum prebreakdown energy and relatively large ITMC
（Subtransient making current）, should be tested under voltage, be realized relatively difficult in closing of requiring.The latter's prebreakdown energy and
ITMC can ignore, but electric power is big, can be tested under the voltage of reduction, be easier to realize.Also have when pull-out test
The former requirement.The present apparatus disclosure satisfy that the former requirement is tested, and meet the correlation test standard requirement of product.
Invention content
The purpose of the utility model patent is to provide a kind of simple device easily realized, high-voltage AC breaker is enable to exist
The high-voltage AC breaker full voltage synthesized under the conditions of pilot system capacity is limited closes device.
The utility model is realized in this way：It includes auxiliary switch, connection busbar, capacitor C1, capacitor C2, capacitance
Device Ca, resistance R1, graphite nodule, sensing element L1, sensing element L2, igniting core and pre-charging device, it is characterized in that：Connection is female
Line, capacitor C1, capacitor C2, graphite nodule, sensing element L1, sensing element L2 and igniting core composition close device, capacitance
Device C1 is connected in parallel on the both ends of graphite nodule, and graphite nodule is connected structure with igniting core, sensing element L1, capacitor C2, sensing element L2
At closed circuit, auxiliary switch, pre-charging device are respectively arranged at the both ends for closing device.
Pre-charging device is in series by diode D and resistance R2.
The utility model by capacitor C1 and capacitor C2 chargings, needing the product tested to apply Voltage Peak outside in advance
When being closed at value, longest prebreakdown electric arc is can result in, the ITMC of requirement is provided（Subtransient making current）, generate symmetrical
Short circuit current, meet relevant criterion requirement.It is simple with structure and principle, the advantages of easy to implement and reliable operation.
Description of the drawings
The utility model patent is described further below in conjunction with attached drawing；
Fig. 1 is the structural schematic diagram that high-voltage AC breaker full voltage closes device.
Specific implementation mode
As shown in Figure 1, it includes connection busbar 1, capacitor C1, capacitor that the high-voltage AC breaker full voltage, which closes device,
C2, graphite nodule 4, sensing element L1, sensing element L2, igniting core 5, auxiliary switch 6, pre-charging device 7, test item 8, bypass
Capacitance Ca, resistance R1, diode D and resistance R2, wherein connection busbar 1, capacitor C1, capacitor C2, graphite nodule 4, induction member
Part L1, sensing element L2 and the igniting composition of core 5 close device, and capacitor C1 is connected in parallel on the both ends of graphite nodule 4, graphite nodule 4 with
Igniting core 5, sensing element L1, capacitor C2, sensing element L2 closed circuits in series are distinguished at the both ends for closing device
It is provided with auxiliary switch 6, pre-charging device 7；Pre-charging device 7 is in series by diode D and resistance R2.
Its course of work is that capacitor C1, capacitor C2 chargings are made applied voltage and capacitor C1, capacitor C2 first
The sum of upper voltage reaches the requirement of making test voltage, and low-voltage is provided by auxiliary switch 6（Applied voltage）, high current（It wants
The making current asked）, test item combined floodgate is at the peak value of applied voltage, and the contact of test item 8, closes the electricity of device at this time
Pressure and applied voltage are superimposed, and disruptive discharge is reached between contact, and the electric current for generating very high frequency flows through test item and closes
Device generates very high induced voltage on sensing element L1, the sensing element L2 for closing device, leads to 5 He of core of lighting a fire
Voltage breakdown spark is generated between graphite nodule 4, which at once puncture graphite nodule 4, and then high current flows through graphite nodule 4 and passes through
Test item, electric arc continuation are burnt between contact, produce longest pre arcing time, symmetrical short circuit current, and experiment meets standard
It is required that.
Claims (2)
1. a kind of high-voltage AC breaker full voltage closes device, it includes auxiliary switch, connection busbar, capacitor C1, capacitance
Device C2, capacitor Ca, resistance R1, graphite nodule, sensing element L1, sensing element L2, igniting core and pre-charging device, feature
It is：Connection busbar, capacitor C1, capacitor C2, graphite nodule, sensing element L1, sensing element L2 and igniting core composition close
Device, capacitor C1 are connected in parallel on the both ends of graphite nodule, graphite nodule and igniting core, sensing element L1, capacitor C2, sensing element
L2 closed circuits in series are respectively arranged with auxiliary switch, pre-charging device at the both ends for closing device.
2. Ju high-voltage AC breaker full voltage described in claim 1 closes device, it is characterized in that pre-charging device is by two
Pole pipe D and resistance R2 are in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820208647.7U CN208028562U (en) | 2018-02-07 | 2018-02-07 | High-voltage AC breaker full voltage closes device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820208647.7U CN208028562U (en) | 2018-02-07 | 2018-02-07 | High-voltage AC breaker full voltage closes device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208028562U true CN208028562U (en) | 2018-10-30 |
Family
ID=63903968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820208647.7U Expired - Fee Related CN208028562U (en) | 2018-02-07 | 2018-02-07 | High-voltage AC breaker full voltage closes device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208028562U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110010408A (en) * | 2019-05-14 | 2019-07-12 | 云南电网有限责任公司电力科学研究院 | A kind of high-voltage power electronic AC circuit breaker |
-
2018
- 2018-02-07 CN CN201820208647.7U patent/CN208028562U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110010408A (en) * | 2019-05-14 | 2019-07-12 | 云南电网有限责任公司电力科学研究院 | A kind of high-voltage power electronic AC circuit breaker |
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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: 20181030 Termination date: 20200207 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |