CN208158141U - A kind of high-tension line PT electricity getting device - Google Patents
A kind of high-tension line PT electricity getting device Download PDFInfo
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- CN208158141U CN208158141U CN201820819710.0U CN201820819710U CN208158141U CN 208158141 U CN208158141 U CN 208158141U CN 201820819710 U CN201820819710 U CN 201820819710U CN 208158141 U CN208158141 U CN 208158141U
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- bidirectional triode
- triode thyristor
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Abstract
The utility model relates to high-voltage line power taking technology fields, specially a kind of high-tension line PT electricity getting device, including power-supply circuit and output circuit, it further include impact protection circuit, impact protection circuit includes the second bidirectional triode thyristor, the T1 electrode and T2 electrode of second bidirectional triode thyristor are connect with two output ends of power-supply circuit respectively, impact protection circuit further includes the first branch and second branch being in parallel with the second bidirectional triode thyristor, the first branch includes concatenated first resistor, first bidirectional triode thyristor and the 4th resistance, second branch includes concatenated third voltage-stabiliser tube, second voltage-stabiliser tube, second resistance and 3rd resistor, the connection of third voltage-stabiliser tube and the second voltage-stabiliser tube is contrary.A kind of high-tension line PT electricity getting device of the utility model, can be realized absorption of releasing, subsequent circuit is protected not to be damaged, and interference when eliminating the voltage progress wide fluctuations of high voltage transmission line to PT electricity getting device guarantees that equipment works normally.
Description
Technical field
The utility model relates to high-voltage line power taking technology field, specially a kind of high-tension line PT electricity getting device.
Background technique
High-voltage end intelligent electric appliance method of supplying power to has at present：Transformer is directly powered, electromagnetic potential transformer (PT) is powered
Or capacitance type potential transformer (CTV) power supply, CT take electric power supply, solar power generation power supply, laser powered sensor, capacitor series connection partial pressure
Formula takes electricity power supply, capacitance current-limiting decompression to take electric power supply, but these all have disadvantages that.
Since the network load moment is all changing, the voltage and current on high-voltage line can occur in peak of power consumption and low ebb compared with
Fluctuation, current PT sensing electricity getting device can not well adapt to this large-scale fluctuation of high-voltage line on a large scale, when
When there is high crest voltage, it is easy to damage PT electricity getting device.
Utility model content
A kind of high-tension line PT electricity getting device provided by the utility model, can be realized absorption of releasing, protects subsequent electricity
Road is not damaged, and interference when eliminating the voltage progress wide fluctuations of high voltage transmission line to PT electricity getting device is guaranteeing equipment just
Often work.
In order to solve the above-mentioned technical problem, this patent provides the following technical solutions：
A kind of high-tension line PT electricity getting device, including power-supply circuit and output circuit, further include impact protection circuit, described
Impact protection circuit includes the second bidirectional triode thyristor, the T1 electrode and T2 electrode of second bidirectional triode thyristor respectively with take electric electricity
Two output ends on road connect, the impact protection circuit further include the first branch being in parallel with the second bidirectional triode thyristor and
Second branch, the first branch include concatenated first resistor, the first bidirectional triode thyristor and the 4th resistance, and second branch includes string
Third voltage-stabiliser tube, the second voltage-stabiliser tube, second resistance and the 3rd resistor of connection, the company of the third voltage-stabiliser tube and the second voltage-stabiliser tube
Connect contrary, the control terminal of the first bidirectional triode thyristor is connected in the second branch between second resistance and 3rd resistor, and
The control terminal of two bidirectional triode thyristors is connected in the first branch between first resistor and the 4th resistance.
In the utility model, when the voltage on high-voltage line is smaller or does not have voltage, the first bidirectional triode thyristor and second pair
It is not turned on to silicon-controlled, any influence will not be constituted to circuit, when network voltage mutates, and voltage increases, circuit is had
Very high peak voltage, third voltage-stabiliser tube or the second voltage-stabiliser tube are breakdown at this time, the first bidirectional triode thyristor conducting, second it is two-way can
The control terminal level for controlling silicon changes, and voltage and current is absorbed, subsequent circuit is protected not damaged by the conducting of the second bidirectional triode thyristor
It is bad, realize absorption of releasing, interference when eliminating the voltage progress wide fluctuations of high voltage transmission line to PT electricity getting device guarantees to set
It is standby to work normally.
Further, the power-supply circuit includes that high pressure takes energy capacitor, arrester and the first isolating transformer, high pressure to take energy
Capacitor one end is connect with high voltage bus, and the other end connects arrester, and the primary side of the first isolating transformer is accessed at arrester both ends,
Secondary side the two poles of the earth of first isolating transformer are connect with second bidirectional triode thyristor the two poles of the earth.
Further, the output circuit includes current rectifying and wave filtering circuit, the current rectifying and wave filtering circuit include RC filter circuit and
Bridge rectifier.Transformation not only may be implemented by isolating transformer, but also electric end and output end will be taken to be isolated, lead to rectification
Filter circuit is rectified and is filtered, and output is stablized.
Further, the output circuit further includes DC/DC circuit, the DC/DC circuit include the second isolating transformer and
Second current rectifying and wave filtering circuit, the second current rectifying and wave filtering circuit include third diode and LC filter circuit.Second isolating transformer
The decompression conversion for realizing DC/DC carries out rectifying and wave-filtering again to final output by the second current rectifying and wave filtering circuit, makes defeated
Increase out and stablizes.
Further, the DC/DC circuit further includes sample circuit and control circuit, and the sample circuit is for acquiring second
The output of current rectifying and wave filtering circuit, the control circuit are used to control the second isolating transformer according to the sampled result of sample circuit
Output.
Further, isolation optocoupler is equipped between the sample circuit and control circuit.Control electricity is reduced by light-coupled isolation
Influence of the road to Acquisition Circuit keeps collection result more accurate.
Detailed description of the invention
Fig. 1 is a kind of logic diagram of high-tension line PT electricity getting device embodiment of the utility model；
Fig. 2 is a kind of circuit diagram of the power-supply circuit embodiment of high-tension line PT electricity getting device of the utility model；
Fig. 3 is a kind of circuit diagram of the output circuit embodiment of high-tension line PT electricity getting device of the utility model.
Specific embodiment
It is further described below by specific embodiment：
Description of symbols：High pressure takes can capacitor C1, first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance
R4, the first bidirectional triode thyristor TR1, the second bidirectional triode thyristor TR2, the first isolating transformer T1, the second isolating transformer T2, the tenth
Two resistance R12, the 15th resistance R15, the 16th resistance R16, the 14th resistance R14, the 17th resistance R17, the 12nd capacitor
C12, the 13rd capacitor C13, accurate voltage stabilizing chip U3, third voltage-stabiliser tube ZD1, the second voltage-stabiliser tube ZD2, bridge rectifier BR1,
Third diode D3, isolation optocoupler U2.
As shown in Figure 1, Figure 2 and shown in Fig. 3, a kind of high-tension line PT electricity getting device of the present embodiment includes power-supply circuit, impact
Circuit and output circuit are protected, wherein：
The power-supply circuit includes that high pressure takes energy capacitor C1, ZnO arrester and the first isolating transformer T1, high pressure to take energy
The one end capacitor C1 is connect with high voltage bus, and the other end connects ZnO arrester, and the first isolating transformer is accessed at ZnO arrester both ends
Secondary side the two poles of the earth of the primary side of T1, the first isolating transformer T1 are connect with impact protection circuit.
Impact protection circuit includes T1 electrode and the T2 electricity of the second bidirectional triode thyristor TR2, the second bidirectional triode thyristor TR2
Pole is connect with the positive and negative anodes output end of the first isolating transformer T1 respectively, and the impact protection circuit further includes two-way with second
The first branch and second branch that silicon-controlled TR2 is in parallel, the first branch includes concatenated first resistor R1, first two-way controllable
Silicon TR1 and the 4th resistance R4, second branch include concatenated third voltage-stabiliser tube ZD1, the second voltage-stabiliser tube ZD2, second resistance R2
And the connection direction of 3rd resistor R3, the third voltage-stabiliser tube ZD1 and the second voltage-stabiliser tube ZD2 are on the contrary, the first bidirectional triode thyristor
The control terminal of TR1 is connected in the second branch between second resistance R2 and 3rd resistor R3, the control of the second bidirectional triode thyristor TR2
End processed is connected in the first branch between first resistor R1 and the 4th resistance R4.
Output circuit includes current rectifying and wave filtering circuit and DC/DC circuit, and the current rectifying and wave filtering circuit includes RC filter circuit
With bridge rectifier BR1, RC filter circuit is in parallel with the second bidirectional triode thyristor TR2, bridge rectifier BR1 input termination the
The both ends of two bidirectional triode thyristor TR2, bridge rectifier BR1 output termination DC/DC circuit.
DC/DC circuit include the second isolating transformer T2, current rectifying and wave filtering circuit, sample circuit and control circuit, second
Isolating transformer T2 primary side output end is connect with bridge rectifier BR1 output end, the second current rectifying and wave filtering circuit and second every
It is connected from transformer T2 secondary side output end, the second current rectifying and wave filtering circuit includes third diode D3 and LC filter circuit.It adopts
Sample circuit is used to acquire the output of the second current rectifying and wave filtering circuit, and the control circuit is used for the sampled result control according to sample circuit
Make the output of the second isolating transformer T2.Specifically, sample circuit includes twelfth resistor R12, the 15th electricity in the present embodiment
Hinder R15, the 16th resistance R16, the 14th resistance R14, the 17th resistance R17, the 12nd capacitor C12, the 13rd capacitor C13,
Accurate voltage stabilizing chip U3, U3 are preferably LM338 chip, and the 15th resistance R15 and the 16th resistance R16 are arranged in series in LC filtering
Between circuit output end anode and ground, twelfth resistor R12, the 14th resistance R14 and the 13rd capacitor C13 are together in series simultaneously
With the branch circuit parallel connection where the 15th resistance R15, it is equipped with the 17th resistance R17 and the 12nd capacitor C12 between two branches and goes here and there
The branch of connection, the 17th one end resistance R17 are connect with the 14th resistance R14, the 12nd one end capacitor C12 and the 15th resistance
The input terminal of the 14th resistance R14 two of R15 connection termination isolation optocoupler U2.
Control circuit includes controlling chip extremely peripheral circuit, and in the present embodiment, control chip is that Switching Power Supply controls core
Piece, preferably DK106 chip, peripheral circuit include the power supply circuit being made of coil L3-4, the 8th resistance, the 9th resistance etc.,
The output pin T4 of isolation optocoupler U2 connects on the VFB pin of control chip, output signal of the controller according to isolation optocoupler U2, control
Make the output of the second isolating transformer T2.
The above are merely the embodiments of the present invention, the common sense such as well known specific structure and characteristic are not made herein in scheme
Excessive description, one skilled in the art know utility model technical field institute before the applying date or priority date
Some ordinary technical knowledges can know the prior art all in the field, and have using conventional real before the date
The ability of means is tested, one skilled in the art can improve simultaneously under the enlightenment that the application provides in conjunction with self-ability
Implement this programme, some typical known features or known method should not become one skilled in the art and implement this
The obstacle of application.It should be pointed out that for those skilled in the art, under the premise of not departing from the utility model structure,
Several modifications and improvements can also be made, these also should be considered as the protection scope of the utility model, these all will not influence this
The effect and patent practicability that utility model is implemented.This application claims protection scope should be with the content of its claim
Standard, the records such as specific embodiment in specification can be used for explaining the content of claim.
Claims (6)
1. a kind of high-tension line PT electricity getting device, including power-supply circuit and output circuit, it is characterised in that：It further include surge protection
Circuit, the impact protection circuit include the second bidirectional triode thyristor, the T1 electrode and T2 electrode point of second bidirectional triode thyristor
It is not connect with two output ends of power-supply circuit, the impact protection circuit further includes being in parallel with the second bidirectional triode thyristor
The first branch and second branch, the first branch include concatenated first resistor, the first bidirectional triode thyristor and the 4th resistance, and second
Branch includes concatenated third voltage-stabiliser tube, the second voltage-stabiliser tube, second resistance and 3rd resistor, the third voltage-stabiliser tube and second
The connection direction of voltage-stabiliser tube is on the contrary, the control terminal of the first bidirectional triode thyristor is connected to second between second resistance and 3rd resistor
Branch road, the control terminal of the second bidirectional triode thyristor are connected in the first branch between first resistor and the 4th resistance.
2. a kind of high-tension line PT electricity getting device according to claim 1, it is characterised in that：The power-supply circuit includes height
Pressure takes energy capacitor, arrester and the first isolating transformer, and high pressure takes energy capacitor one end to connect with high voltage bus, other end connection
The primary side of the first isolating transformer, secondary side the two poles of the earth and second of the first isolating transformer are accessed in arrester, arrester both ends
The connection of bidirectional triode thyristor the two poles of the earth.
3. a kind of high-tension line PT electricity getting device according to claim 2, it is characterised in that：The output circuit includes whole
Filter circuit is flowed, the current rectifying and wave filtering circuit includes RC filter circuit and bridge rectifier.
4. a kind of high-tension line PT electricity getting device according to claim 3, it is characterised in that：The output circuit further includes
DC/DC circuit, the DC/DC circuit include the second isolating transformer and the second current rectifying and wave filtering circuit, the second current rectifying and wave filtering circuit
Including third diode and LC filter circuit.
5. a kind of high-tension line PT electricity getting device according to claim 4, it is characterised in that：The DC/DC circuit also wraps
Sample circuit and control circuit are included, the sample circuit is used to acquire the output of the second current rectifying and wave filtering circuit, the control circuit
For controlling the output of the second isolating transformer according to the sampled result of sample circuit.
6. a kind of high-tension line PT electricity getting device according to claim 5, it is characterised in that：The sample circuit and control
Isolation optocoupler is equipped between circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820819710.0U CN208158141U (en) | 2018-05-29 | 2018-05-29 | A kind of high-tension line PT electricity getting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820819710.0U CN208158141U (en) | 2018-05-29 | 2018-05-29 | A kind of high-tension line PT electricity getting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208158141U true CN208158141U (en) | 2018-11-27 |
Family
ID=64388780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820819710.0U Expired - Fee Related CN208158141U (en) | 2018-05-29 | 2018-05-29 | A kind of high-tension line PT electricity getting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208158141U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112448483A (en) * | 2020-10-16 | 2021-03-05 | 江苏思源赫兹互感器有限公司 | CVT energy-taking device for high-voltage alternating current limiter |
| CN113740679A (en) * | 2021-08-06 | 2021-12-03 | 西安交通大学 | Capacitor current-limiting electricity taking device and local discharge amount reduction method thereof |
-
2018
- 2018-05-29 CN CN201820819710.0U patent/CN208158141U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112448483A (en) * | 2020-10-16 | 2021-03-05 | 江苏思源赫兹互感器有限公司 | CVT energy-taking device for high-voltage alternating current limiter |
| CN113740679A (en) * | 2021-08-06 | 2021-12-03 | 西安交通大学 | Capacitor current-limiting electricity taking device and local discharge amount reduction method thereof |
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|---|---|---|---|
| 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: 20181127 |