CN206471825U - A kind of novel efficient extinguishing arc and overvoltage protection - Google Patents
A kind of novel efficient extinguishing arc and overvoltage protection Download PDFInfo
- Publication number
- CN206471825U CN206471825U CN201620968378.5U CN201620968378U CN206471825U CN 206471825 U CN206471825 U CN 206471825U CN 201620968378 U CN201620968378 U CN 201620968378U CN 206471825 U CN206471825 U CN 206471825U
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- Prior art keywords
- voltage
- arc
- overvoltage protection
- extinguishing arc
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Abstract
The utility model discloses a kind of novel efficient extinguishing arc and overvoltage protection, belong to extinguishing arc and overvoltage protection field, including high-voltage and current-limitation fuse, vacuum contactor, linear extinguishing arc resistance, arc-suppressing controller, high-tension fuse, voltage transformer, microcomputer, overvoltage protection controller, znr, high-voltage quick switch and current signal converter, the novel efficient extinguishing arc and overvoltage protection are internally provided with high-voltage and current-limitation fuse, vacuum contactor, linear extinguishing arc resistance, arc-suppressing controller, high-tension fuse, voltage transformer, microcomputer, overvoltage protection controller, znr, high-voltage quick switch and current signal converter, this novel efficient extinguishing arc and overvoltage protection low cost, it is novel in design, it is easy to use, novel efficient extinguishing arc and overvoltage protection are provided with two kinds of systems of extinguishing arc and overvoltage protection, the demand of extinguishing arc and overvoltage protection can effectively be met.
Description
【Technical field】
The utility model belongs to extinguishing arc and overvoltage protection field, and in particular to a kind of novel efficient extinguishing arc and overvoltage
Protection device.
【Background technology】
Current below China 35kV distribution system largely uses neutral point non-direct grounding system, when neutral point is non-straight
When connecing earthed system generation singlephase earth fault, fault current is capacitive current, will be lighted more than a threshold value in ground connection
Unstable electric arc is played, along with the electromagnetic viscosimeter of transient process, easily causes single-phase interval arc grounding over-voltage, though amplitude is not
Greatly, if but long-term existence, the equipment weaker to dielectric strength can produce harm, and then cause the more serious danger such as phase fault
Evil, further, since resonance overvoltage, switching overvoltage and overvoltage phenomenon caused by other reasonses are grounded in non-neutral point and are
It is also relatively common in system, and overvoltage endangers once occurring the power outage for often causing electric equipment damage or large area
Property is very big.
In neutral point non-direct grounding system, typically using the purpose that extinguishing arc is reached by adding arc suppression coil, i.e.,
Neutral point is passed through into grounding through arc, when single-phase earthing occurs for system, the inductance current pair event produced using arc suppression coil
The capacitance current of barrier point is compensated, and reduces the residual flow of trouble point, so that the function of blow-out is reached, but due to operation of power networks side
The diversity and earth fault randomness of formula are compensated with certain difficulty using arc suppression coil to capacitance current, and
Arc suppression coil is compensated only for power current, to high frequency electric without effective way, due to limiting the recovery voltage in arc road,
Often arrive peak again to puncture, be thus exaggerated the coefficient of overvoltage, it is impossible to reach preferable effect, and for example failure
Method is mutually directly grounded, due to that can not reach that entirely accurate judges failure phase, the harm of phase fault is easily caused；Due to that can not consume
Unnecessary electric charge on bus, once exiting, easily causes PT ferromagnetic resonances；To having the loops such as the straight high-tension motor with power supply not
This kind equipment must be used.
Therefore, the problem of those skilled in the art are in the urgent need to address is how preferably to eliminate lonely light harm, simultaneously will
Arc overvoltage, resonance overvoltage and other types overvoltage are limited in reduced levels.
【Utility model content】
The purpose of this utility model is to provide a kind of novel efficient extinguishing arc and overvoltage protection, above-mentioned to solve
The problem of being proposed in background technology.
To realize the utility model purpose, the technical scheme of use is：
A kind of novel efficient extinguishing arc and overvoltage protection, belong to extinguishing arc and overvoltage protection field, including high pressure
Limiting fuse, vacuum contactor, linear extinguishing arc resistance, arc-suppressing controller, high-tension fuse, voltage transformer, miniature calculating
Machine, overvoltage protection controller, znr, high-voltage quick switch and current signal converter, the new height
Efficiency extinguishing arc and overvoltage protection are internally provided with high-voltage and current-limitation fuse, vacuum contactor, linear extinguishing arc resistance, extinguishing arc
Controller, high-tension fuse, voltage transformer, microcomputer, overvoltage protection controller, znr, height
Press high-speed switch and current signal converter, the arc-extinguishing system inner high voltage limiting fuse, vacuum contactor, linear extinguishing arc electricity
Microcomputer, overvoltage protection control are provided with resistance, arc-suppressing controller and microcomputer, the overcurrent protection system
Device, znr, high-voltage quick switch and current signal converter, the high-tension fuse, voltage transformer and
Microcomputer is set on the same line.
Further, 3 vacuum contactors, 1 linear extinguishing arc resistance and an extinguishing arc are included inside the arc-extinguishing system
Controller, wherein, the connection corresponding with the triple line of high voltage power supply of the line inputs of 3 vacuum contactors, 3 vacuum contactors
Line output terminal is connected with the line input of linear extinguishing arc resistance, the line output terminal ground connection of linear extinguishing arc resistance.
Further, provided with 3 high-voltage and current-limitation fuses inside the high-tension fuse, the line of wherein high-tension fuse is defeated
Go out end to be connected with the line input of voltage transformer, the line output terminal of voltage transformer and the line input of microcomputer connect
Connect.
Further, provided with 1 overvoltage protection controller, 3 zinc oxide non-thread inside the overvoltage protection system
Property resistance, 3 high-voltage quick switch and 3 current signal converters, wherein the line input of 3 znrs with
The triple line correspondence of high voltage power supply is connected, and the line output terminal of 3 znrs is corresponding with 3 high-voltage quick switch to be connected
Connect, the connection corresponding with 3 current signal converters of 3 high-voltage quick switch, 3 high-voltage quick switch and 3 current signals turn
The line output terminal of parallel operation is grounded.
Compared with prior art, it is of the present utility model to have the advantages that：This novel efficient extinguishing arc and overvoltage
Protection device low cost, simple in construction, novel in design, easy to use, the arc-extinguishing system of setting is internally provided with high-voltage and current-limitation and melted
Disconnected device, vacuum contactor, linear extinguishing arc resistance, arc-suppressing controller and microcomputer, can effectively eliminate electric arc, and can be fast
Original is replied immediately, the overvoltage protection system of setting is internally provided with microcomputer, overvoltage protection controller, zinc oxide nonlinear
Resistance, high-voltage quick switch and current signal converter, can effectively eliminate infringement of the overvoltage to equipment.
【Brief description of the drawings】
Fig. 1 is the utility model structural representation.
In figure：1st, high-voltage and current-limitation fuse；2nd, vacuum contactor；3rd, linear extinguishing arc resistance；4th, arc-suppressing controller；5th, high pressure
Fuse；6th, voltage transformer；7th, microcomputer；8th, overvoltage protection controller；9th, znr；10th, it is high
Press high-speed switch；11st, current signal converter.
【Embodiment】
To be easy to understand technological means, creation characteristic, reached purpose and effect of the utility model realization, below
With reference to embodiment, the utility model is expanded on further.
As shown in figure 1, a kind of novel efficient extinguishing arc and overvoltage protection, belong to extinguishing arc and overvoltage protection neck
Domain, including high-voltage and current-limitation fuse 1, vacuum contactor 2, linear extinguishing arc resistance 3, arc-suppressing controller 4, high-tension fuse 5, voltage
Transformer 6, microcomputer 7, overvoltage protection controller 8, znr 9, high-voltage quick switch 10 and electric current
Signal adapter 11, the novel efficient extinguishing arc and overvoltage protection are internally provided with high-voltage and current-limitation fuse 1, vacuum
Contactor 2, linear extinguishing arc resistance 3, arc-suppressing controller 4, high-tension fuse 5, voltage transformer 6, microcomputer 7, overvoltage
Protect in controller 8, znr 9, high-voltage quick switch 10 and current signal converter 11, the arc-extinguishing system
High-voltage and current-limitation fuse 1, vacuum contactor 2, linear extinguishing arc resistance 3, arc-suppressing controller 4 and microcomputer 7, the electricity excessively are protected
Microcomputer 7, overvoltage protection controller 8, znr 9, high-voltage quick switch 10 are provided with protecting system
With current signal converter 11, the high-tension fuse 5, voltage transformer 6 and microcomputer 7 are set on the same line.
Operationally, 7 pairs of voltage signals from voltage transformer 6 of microcomputer judge the utility model：When
When equipment fault reason is arc grounding, microcomputer 7 starts arc-suppressing controller 4 and is controlled startup to vacuum contactor 2,
Linear extinguishing arc resistance 3 is worked, arc light eliminated so that system is changed into resistance eutral grounding from unstable arc grounding,
When there is overvoltage load, microcomputer 7 starts overvoltage protection controller 8 and controls to start high-voltage quick switch 10, makes
Obtain overvoltage consumed energy on znr 9 so that voltage returns to normal value, current signal converter 11 is felt
Know whether the overvoltage being depressurized is normal, the high-voltage and current-limitation fuse 1 set in triple line can effectively block high pressure to equipment
Infringement.
Wherein, 3 vacuum contactors 2,1 linear extinguishing arc resistance 3 and an extinguishing arc control are included inside the arc-extinguishing system
Device 4 processed, wherein, the line input connection corresponding with the triple line of high voltage power supply of 3 vacuum contactors 2,3 vacuum contactors 2
Line output terminal be connected with the line input of linear extinguishing arc resistance 3, the line output terminal of linear extinguishing arc resistance 3 ground connection.
Wherein, the inside of high-tension fuse 5 is provided with 3 high-voltage and current-limitation fuses 1, and the line of wherein high-tension fuse 5 is defeated
Go out end to be connected with the line input of voltage transformer 6, the line output terminal of voltage transformer 6 and the line input of microcomputer 7
Connection.
Wherein, provided with 1 overvoltage protection controller 8,3 zinc oxide nonlinear electricity inside the overvoltage protection system
Resistance 9,3 high-voltage quick switch 10 and 3 current signal converters 11, wherein the line input of 3 znrs 9
Connection corresponding with the triple line of high voltage power supply, the line output terminal and 3 high-voltage quick switch 10 of 3 znrs 9
Correspondence connection, 3 high-voltage quick switch are corresponding with 3 current signal converters 11 to be connected, 3 high-voltage quick switch 10 and 3
The line output terminal of current signal converter 11 is grounded.
General principle of the present utility model and principal character and advantage of the present utility model has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the utility model is not restricted to the described embodiments, described in above-described embodiment and specification
Simply illustrate principle of the present utility model, on the premise of the utility model spirit and scope are not departed from, the utility model is also
Various changes and modifications are had, these changes and improvements are both fallen within the range of claimed the utility model.The utility model
Claimed scope is by appended claims and its equivalent thereof.
Claims (4)
1. a kind of novel efficient extinguishing arc and overvoltage protection, including high-voltage and current-limitation fuse (1), vacuum contactor (2),
It is linear extinguishing arc resistance (3), arc-suppressing controller (4), high-tension fuse (5), voltage transformer (6), microcomputer (7), excessively electric
Pressure protection controller (8), znr (9), high-voltage quick switch (10) and current signal converter (11), it is special
Levy and be：It is provided with described device in arc-extinguishing system and overcurrent protection system, described device and is provided with vacuum in arc-extinguishing system
Overcurrent protection system in contactor (2), linear extinguishing arc resistance (3), arc-suppressing controller (4) and microcomputer (7), described device
Inside it is provided with microcomputer (7), overvoltage protection controller (8), znr (9), high-voltage quick switch
(10) and current signal converter (11), the high-tension fuse (5), voltage transformer (6) and microcomputer (7) are arranged on
On same straight line, high-voltage and current-limitation fuse (1) is provided with the high-tension bus-bar.
2. a kind of novel efficient extinguishing arc according to claim 1 and overvoltage protection, it is characterised in that：The dress
Putting includes 3 vacuum contactors (2), 1 linear extinguishing arc resistance (3) and an arc-suppressing controller (4) inside interior arc-extinguishing system, its
In, the line input connection corresponding with the triple line of high voltage power supply of 3 vacuum contactors (2), the line of 3 vacuum contactors (2)
Output end is connected with the line input of linear extinguishing arc resistance (3), the line output terminal ground connection of linear extinguishing arc resistance (3).
3. a kind of novel efficient extinguishing arc according to claim 1 and overvoltage protection, it is characterised in that：The height
Press inside fuse (5) provided with 3 high-voltage and current-limitation fuses (1), the wherein line output terminal and mutual induction of voltage of high-tension fuse (5)
The line input connection of device (6), the line output terminal of voltage transformer (6) is connected with the line input of microcomputer (7).
4. a kind of novel efficient extinguishing arc according to claim 1 and overvoltage protection, it is characterised in that：The dress
Internal overvoltage protection internal system is put provided with 1 overvoltage protection controller (8), 3 znrs (9), 3 high
Press high-speed switch (10) and 3 current signal converters (11), wherein the line input of 3 znrs (9) and
The triple line correspondence of high voltage power supply is connected, the line output terminal and 3 high-voltage quick switch of 3 znrs (9)
(10) correspondence connection, the connection corresponding with 3 current signal converters (11) of 3 high-voltage quick switch, 3 high-voltage quick switch
(10) it is grounded with the line output terminals of 3 current signal converters (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620968378.5U CN206471825U (en) | 2016-08-28 | 2016-08-28 | A kind of novel efficient extinguishing arc and overvoltage protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620968378.5U CN206471825U (en) | 2016-08-28 | 2016-08-28 | A kind of novel efficient extinguishing arc and overvoltage protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206471825U true CN206471825U (en) | 2017-09-05 |
Family
ID=59709450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620968378.5U Expired - Fee Related CN206471825U (en) | 2016-08-28 | 2016-08-28 | A kind of novel efficient extinguishing arc and overvoltage protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206471825U (en) |
-
2016
- 2016-08-28 CN CN201620968378.5U patent/CN206471825U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170905 Termination date: 20190828 |