CN205992029U - A kind of DC converter valve valve Room lightning arrester monitoring device - Google Patents
A kind of DC converter valve valve Room lightning arrester monitoring device Download PDFInfo
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- CN205992029U CN205992029U CN201620788370.0U CN201620788370U CN205992029U CN 205992029 U CN205992029 U CN 205992029U CN 201620788370 U CN201620788370 U CN 201620788370U CN 205992029 U CN205992029 U CN 205992029U
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- rectifier bridge
- outfan
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- diode
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Abstract
The utility model discloses a kind of DC converter valve valve Room lightning arrester monitoring device, it includes rectifier bridge U1, rectifier bridge U2, discharging gap, stabilivolt V1, controllable silicon Th, diode D1, comparator U3 and optical pulse generator, the outfan of rectifier bridge U1 connects to the positive input terminal of comparator U3 after diode D1, and the negative input end of comparator U3 connects to the outfan of optical pulse generator；The other end of discharging gap is connected to the input of rectifier bridge U2 by a resistance R2, the anode of controllable silicon Th is connected between the outfan of rectifier bridge U1 and diode D1, the positive and negative electrode of stabilivolt V1 is respectively connecting to gate pole and the anode of controllable silicon Th, and the outfan of rectifier bridge U2 is connected to the outfan of rectifier bridge U1.This utility model is input to valve base electronic device by the light pulse signal that comparator exports, and judges the whether action of valve Room spark gap according to this.
Description
Technical field
This utility model is related to converter valve equipment and in particular to a kind of DC converter valve valve Room lightning arrester monitoring device.
Background technology
In recent years, D.C. high voltage transmission achieves fast development, and converter valve is that the core in high voltage direct current transmission project sets
Standby, it plays vital effect to the safe and stable operation of direct current transportation.Again because converter valve is very expensive, therefore, work
In journey, the two ends in converter valve need parallel valve Room spark gap to be protected.In order that the staff of current conversion station, can understand in time
The ruuning situation of converter valve Room spark gap, need to be monitored to the state of valve Room spark gap.
The method of monitoring has many kinds, and at present, relatively common is to install by electronic devices and components on valve Room spark gap side
The device constituting is monitored.Because converter valve Room spark gap is installed in the converter valve Room, residing electromagnetic environment is very
Complexity, and electric pressure is again high, electromagnetic interference is very serious.Therefore, the shortcoming of this monitoring technology is, the electromagnetism ring in the valve Room
The border electronic devices and components normal work in severe jamming monitoring device sometimes, causes the deceptive information of valve Room lightning arrestor movement,
To current conversion station, operations staff makes troubles.
In addition, the traditional approach of detection valve Room spark gap electric current is by the way of being directly connected to ammeter or voltmeter,
But because the electric current on the spark gap of the valve Room is very big and change rapider, when using ammeter or voltmeter,
Very big curtage can be flow through immediately between ammeter or voltmeter, be likely to result in the damage of instrument.
Utility model content
In order to solve the above problems, this utility model provides a kind of DC converter valve valve Room lightning arrester monitoring device, and it leads to
The light pulse signal crossing comparator output is input to valve base electronic device, judges the whether action of valve Room spark gap according to this.
For achieving the above object, this utility model adopts the technical scheme that：
A kind of DC converter valve valve Room lightning arrester monitoring device, it includes rectifier bridge U1, rectifier bridge U2, discharging gap, steady
Pressure pipe V1, controllable silicon Th, diode D1, comparator U3 and optical pulse generator, wherein, one end of discharging gap connects to the valve Room
Spark gap, the input of rectifier bridge U1 is connected between one end of discharging gap and valve Room spark gap by a resistance R1, rectification
The outfan of bridge U1 connects to the positive input terminal of comparator U3 after diode D1, and the negative input end of comparator U3 connects to light
The outfan of pulse generator, the outfan of comparator U3 is connected to valve base electronic device by optical fiber；Discharging gap another
End is connected to the input of rectifier bridge U2 by a resistance R2, and the other end of discharging gap connects also by a nonlinear resistance RF1
Ground, the anode of controllable silicon Th is connected between the outfan of rectifier bridge U1 and diode D1, the minus earth of controllable silicon Th, voltage stabilizing
The positive and negative electrode of pipe V1 is respectively connecting to gate pole and the anode of controllable silicon Th, and the outfan of rectifier bridge U2 is connected to rectifier bridge U1's
Outfan.
Described DC converter valve valve Room lightning arrester monitoring device also includes a filter circuit, and described filter circuit is electric capacity
One end of C1, described electric capacity C1 is connected between diode D1 and comparator U3, the other end ground connection of electric capacity C1.
Described DC converter valve valve Room lightning arrester monitoring device also includes a protection circuit, and described protection circuit includes N ditch
Road technotron Q1, electric capacity C2, slide rheostat RZ and stabilivolt V2, wherein said N-channel technotron Q1
Source electrode be connected between diode D1 and comparator U3, the grid of N-channel technotron Q1 is grounded by electric capacity C2, N
The drain electrode of channel junction field-effect pipe Q1 is connected to the negative pole of stabilivolt V2 by slide rheostat RZ, and the positive pole of stabilivolt V2 connects
Ground.
Compared with prior art, this utility model has advantages below：When valve Room Analyse of Reject-acting Arrester, by light pulse
Generator exports the light pulse of 10Hz to valve base electronic device, and in valve Room lightning arrestor movement, comparator U3 inverts, to valve base
Electronic equipment exports the light pulse of 80Hz, and whether the light pulse signal that can be exported by comparator according to this is judging valve Room spark gap
Action, measurement accurately, does not result in the damage of instrument and meter, simple and convenient.
Brief description
Fig. 1 is the circuit theory diagrams of this utility model DC converter valve valve Room lightning arrester monitoring device.
Specific embodiment
With reference to the accompanying drawings and detailed description content of the present utility model is described in further details.
Embodiment
Refer to shown in Fig. 1, a kind of DC converter valve valve Room lightning arrester monitoring device, it includes rectifier bridge U1, rectifier bridge
U2, discharging gap 2, stabilivolt V1, controllable silicon Th, diode D1, comparator U3 and optical pulse generator 3, wherein, discharging gap
One end (referred to as upper end) of 2 (also known as portable protective gaps) connects to valve Room spark gap 1, and the input of rectifier bridge U1 passes through a resistance
R1 is connected between one end of discharging gap 2 and valve Room spark gap 1, the outfan of rectifier bridge U1 connect after diode D1 to
The positive input terminal of comparator U3, the negative input end of comparator U3 connects to the outfan of optical pulse generator, and comparator U3's is defeated
Go out end to connect to valve base electronic device 4 (VBE) by optical fiber；The other end (referred to as lower end) of discharging gap 2 passes through a resistance
R2 connects to the input of rectifier bridge U2, and the other end of discharging gap is grounded also by a nonlinear resistance RF1, controllable silicon Th's
Anode is connected between the outfan of rectifier bridge U1 and diode D1, the minus earth of controllable silicon Th, the positive and negative electrode of stabilivolt V1
It is respectively connecting to gate pole and the anode of controllable silicon Th, the outfan of rectifier bridge U2 is connected to the outfan of rectifier bridge U1.
DC converter valve valve Room lightning arrester monitoring device also includes a filter circuit and protection circuit, and filter circuit is electric capacity
One end of C1, electric capacity C1 is connected between diode D1 and comparator U3, the other end ground connection of electric capacity C1.Protection circuit includes N
Channel junction field-effect pipe Q1, electric capacity C2, slide rheostat RZ and stabilivolt V2's, wherein N-channel technotron Q1
Source electrode is connected between diode D1 and comparator U3, and the grid of N-channel technotron Q1 is grounded by electric capacity C2, N ditch
The drain electrode of road technotron Q1 is connected to the negative pole of stabilivolt V2 by slide rheostat RZ, and the positive pole of stabilivolt V2 connects
Ground.
Its operation principle is：
When valve Room Analyse of Reject-acting Arrester, from valve Room spark gap 1 flow into 0.8mA electric current, the resistance R1 through 4.7k Ω and
After rectifier bridge U1, serve as the power supply of whole device, now, the electric current that it is input to comparator U3 positive input terminal through diode D1 is very
Little, therefore, the light pulse signal of the 10Hz of comparator U3 output optical pulse generator 3 output.When valve Room lightning arrestor movement, from
Valve Room spark gap 1 injects the electric current of more than 0.7A, after 4.7k Ω resistance and rectifier bridge U1, reaches in the voltage of discharging gap 2
More than 3.5kV, makes discharging gap 2 portable protective gaps puncture, and the lower end in current discharge gap 2 flows into, and enters rectification after resistance R2
Bridge U2.Both end voltage due to instantaneous stabilivolt V1 does not reach 60V, so controllable silicon Th can not turn on, at this moment under discharging gap 2
The nonlinear resistance RF in face raises due to having voltage, the characteristic of resistance reduction, therefore after can making current flow through thus reaching protection
The purpose of face circuit.When the both end voltage of stabilivolt V1 is higher than 60V, controllable silicon Th is triggered, and also can play the effect of protection,
Due to current surge after now controllable silicon Th triggering, comparator U3 inverts, and produces 80Hz light pulse signal, by optical fiber the valve Room
The light pulse that lightning arrester monitoring device sends is introduced in valve base electronic device 4, with the frequency according to light pulse, judges that valve is taken shelter from the thunder
Device 1 whether action.
Above-listed detailed description is illustrating for this utility model possible embodiments, and this embodiment simultaneously is not used to limit
The scope of the claims of the present utility model, all equivalence enforcements done without departing from this utility model or change, are intended to be limited solely by this case
In the scope of the claims.
Claims (3)
1. a kind of DC converter valve valve Room lightning arrester monitoring device is it is characterised in that it includes rectifier bridge U1, rectifier bridge U2, puts
Electric gap, stabilivolt V1, controllable silicon Th, diode D1, comparator U3 and optical pulse generator, wherein, one end of discharging gap
Connect to valve Room spark gap, the input of rectifier bridge U1 is connected to one end and the valve Room spark gap of discharging gap by a resistance R1
Between, the outfan of rectifier bridge U1 connects to the positive input terminal of comparator U3, the negative input of comparator U3 after diode D1
End connects to the outfan of optical pulse generator, and the outfan of comparator U3 is connected to valve base electronic device by optical fiber；Electric discharge
The other end in gap is connected to the input of rectifier bridge U2 by a resistance R2, and the other end of discharging gap is non-linear also by one
Resistance RF1 is grounded, and the anode of controllable silicon Th is connected between the outfan of rectifier bridge U1 and diode D1, the negative electrode of controllable silicon Th
Ground connection, the positive and negative electrode of stabilivolt V1 is respectively connecting to gate pole and the anode of controllable silicon Th, and the outfan of rectifier bridge U2 is connected to whole
The outfan of stream bridge U1.
2. DC converter valve valve Room lightning arrester monitoring device according to claim 1 is it is characterised in that described DC converter
Valve valve Room lightning arrester monitoring device also includes a filter circuit, and described filter circuit is electric capacity C1, and one end of described electric capacity C1 is even
It is connected between diode D1 and comparator U3, the other end ground connection of electric capacity C1.
3. DC converter valve valve Room lightning arrester monitoring device according to claim 1 and 2 is it is characterised in that described direct current
Converter valve Room lightning arrester monitoring device also includes a protection circuit, described protection circuit include N-channel technotron Q1,
Electric capacity C2, slide rheostat RZ and stabilivolt V2, the source electrode of wherein said N-channel technotron Q1 is connected to diode
Between D1 and comparator U3, the grid of N-channel technotron Q1 is grounded by electric capacity C2, N-channel technotron Q1
Drain electrode be connected to the negative pole of stabilivolt V2, the plus earth of stabilivolt V2 by slide rheostat RZ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620788370.0U CN205992029U (en) | 2016-07-26 | 2016-07-26 | A kind of DC converter valve valve Room lightning arrester monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620788370.0U CN205992029U (en) | 2016-07-26 | 2016-07-26 | A kind of DC converter valve valve Room lightning arrester monitoring device |
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| Publication Number | Publication Date |
|---|---|
| CN205992029U true CN205992029U (en) | 2017-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620788370.0U Active CN205992029U (en) | 2016-07-26 | 2016-07-26 | A kind of DC converter valve valve Room lightning arrester monitoring device |
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| CN (1) | CN205992029U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608803A (en) * | 2019-07-29 | 2019-12-24 | 中国南方电网有限责任公司超高压输电公司广州局 | Method for arranging monitoring sensors of converter valve hall |
-
2016
- 2016-07-26 CN CN201620788370.0U patent/CN205992029U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608803A (en) * | 2019-07-29 | 2019-12-24 | 中国南方电网有限责任公司超高压输电公司广州局 | Method for arranging monitoring sensors of converter valve hall |
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