CN208445535U - A kind of the controllable arrester thyristor valve switch and controllable arrester of inhibition response Lightning Over-voltage - Google Patents
A kind of the controllable arrester thyristor valve switch and controllable arrester of inhibition response Lightning Over-voltage Download PDFInfo
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- CN208445535U CN208445535U CN201820770973.7U CN201820770973U CN208445535U CN 208445535 U CN208445535 U CN 208445535U CN 201820770973 U CN201820770973 U CN 201820770973U CN 208445535 U CN208445535 U CN 208445535U
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Abstract
The utility model embodiment provides the controllable arrester thyristor valve switch and controllable arrester of a kind of inhibition response Lightning Over-voltage, the controllable arrester thyristor valve switch includes: the mutually concatenated thyristor valve module of multilayer, and every layer crystal gate tube valve wired in parallel has dynamic electric resistor module；Dynamic electric resistor module has different resistance values according to the type of voltage wave, and when bearing Lightning Over-voltage wave, the resistance value of dynamic electric resistor module makes the voltage at thyristor both ends in thyristor valve module less than the conducting voltage of thyristor.By implementing the utility model embodiment, it can be avoided the case where thyristor valve module is damaged due to the huge current changing rate of Lightning Over-voltage, the pressure of each layer thyristor valve module is realized on the basis of no increase additional circuit structure, thyristor valve switch relative to existing controllable arrester, structure is simple, internal electric field is evenly distributed, and improves the reliability of thyristor valve switch.
Description
Technical field
The utility model relates to power electronic devices protection technique fields, and in particular to a kind of inhibition response Lightning Over-voltage
Controllable arrester thyristor valve switch.
Background technique
Extra-high-voltage alternating current thyristor valve-type controllable arrester is mainly that depth reduces switching overvoltage residual voltage, can be cancelled disconnected
Road device switching-on resistance reduces controllable arrester occupied area, improves controllable arrester operational reliability, but controllable in operational process
Arrester not only needs to bear switching overvoltage operating condition, can also bear Lightning Over-voltage operating condition, and two kinds of operating conditions close thyristor valve
The requirement of bond parameter is as shown in table 1:
Table 1
Thyristor valve module meets voltage requirement under two kinds of operating conditions by multilayer series system at present, but due to production technology
Limitation, thyristor valve module is difficult to bear under Lightning Over-voltage huge di/dt (current changing rate) in turn on process.
In the prior art by current-limiting inductance of connecting in thyristor valve switch circuit, to reduce controllable arrester thyristor
Dash current amplitude and current changing rate in threshold switch circuit, so that existing high-pressure high-power thyristor device can satisfy
Controllable arrester needs to increase to the application requirement of thyristor valve switch, however in order to realize the pressure of each layer thyristor valve module
Add additional circuit structure, leading to thyristor valve switch, structure is complicated, and thyristor valve switch internal electric field is caused to be unevenly distributed
It is even, to reduce the reliability of thyristor valve switch.
Utility model content
In view of above-mentioned analysis, the utility model embodiment proposes a kind of the controllable lightning-arrest of inhibition response Lightning Over-voltage
Device thyristor valve switch realizes the equal of each layer thyristor valve module to solve existing controllable arrester thyristor valve switch
Pressure, needs to increase additional circuit structure, leading to thyristor valve switch, structure is complicated, causes thyristor valve switch internal electric field
It is unevenly distributed, thus the problem of reducing thyristor valve switch reliability.
To achieve the above objectives, the present invention adopts the following technical solutions:
The utility model first aspect provides a kind of controllable arrester thyristor valve switch of inhibition response Lightning Over-voltage,
It include: the mutually concatenated thyristor valve module of multilayer, every layer of thyristor valve module is parallel with dynamic electric resistor module；It is described dynamic
State resistive module has different resistance values, when bearing Lightning Over-voltage wave, the dynamic electric resistor mould according to the type of voltage wave
The resistance value of block makes the voltage at thyristor both ends in the thyristor valve module less than the conducting voltage of the thyristor.
With reference to first aspect, in first aspect first embodiment, the dynamic electric resistor module includes: capacitor.
First embodiment with reference to first aspect, in first aspect second embodiment, the value of the capacitor is 1~
2nF。
With reference to first aspect, in first aspect third embodiment, the thyristor valve module includes: reverse parallel connection
First thyristor and the second thyristor.
Third embodiment with reference to first aspect, in the 4th embodiment of first aspect, the crystalline substance of the controllable arrester
Brake tube threshold switch further include: the first trigger module and the second trigger module, it is brilliant that first trigger module is parallel to described first
The anode and gate pole of brake tube, second trigger module are parallel to the anode and gate pole of second thyristor；First touching
Hair module and the second trigger module are respectively used to detect the both end voltage of the thyristor in parallel with itself, by the two of the thyristor
End voltage is compared with preset threshold, when the both end voltage of the thyristor is greater than the preset threshold, triggering it is described and
Itself turn on thyristors in parallel.
The utility model second aspect provides a kind of controllable arrester, comprising: such as the utility model first aspect or this reality
The controllable arrester thyristor valve switch described in novel first aspect any embodiment.
In conjunction with second aspect, in second aspect first embodiment, the controllable arrester further include: arrester is controlled
Portion, it is in parallel with the thyristor valve switch.
First embodiment with reference to first aspect, in first aspect second embodiment, the controllable arrester is also wrapped
It includes: arrester fixed part；One end of the parallel circuit of the controlled portion of arrester and thyristor valve switch composition is grounded, separately
One end connects the arrester fixed part.
Technical solutions of the utility model at least have the advantages that compared with prior art
The utility model embodiment provides a kind of controllable arrester thyristor valve switch of inhibition response Lightning Over-voltage,
The thyristor valve switch of the controllable arrester includes: the mutually concatenated thyristor valve module of multilayer, and every layer of thyristor valve module is simultaneously
It is associated with dynamic electric resistor module, which has different resistance values according to the type of voltage wave, when bearing to be struck by lightning electricity
When pressing wave, the resistance value of dynamic electric resistor module makes the voltage at thyristor both ends in thyristor valve module less than the electric conduction of thyristor
Pressure, so that thyristor valve switch provided by the embodiment of the utility model is while realizing that each layer thyristor valve module is pressed, it is real
Inhibition thyristor valve switch response Lightning Over-voltage is showed, has been damaged so as to avoid thyristor valve switch because of super-high-current change rate
It is bad, relative to the thyristor valve switch of existing controllable arrester, do not increase additional circuit structure, structure is simple, internal electric field
It is evenly distributed, improves the reliability of thyristor valve switch.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is that the structure of a specific example of the thyristor valve switch of controllable arrester in the utility model embodiment is shown
It is intended to；
Fig. 2 is the structural schematic diagram of a specific example of controllable arrester in the utility model embodiment.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally
Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical
Novel protected range.
In the description of the present invention, it should be noted that term " first ", " second " are used for description purposes only, and
It cannot be understood as indicating or implying relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " connection "
It shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can also be two elements indirectly connected through an intermediary
Internal connection, can be wireless connection, is also possible to wired connection.It for the ordinary skill in the art, can be with
Concrete condition understands the concrete meaning of above-mentioned term in the present invention.
In addition, as long as technical characteristic involved in the utility model different embodiments disclosed below is each other
Not constituting conflict can be combined with each other.
The utility model embodiment provides a kind of controllable arrester thyristor valve switch of inhibition response Lightning Over-voltage,
As shown in Figure 1, the controllable arrester thyristor valve switch includes: the mutually concatenated thyristor valve module 1 of multilayer, every layer crystal brake tube
Valve module is parallel with dynamic electric resistor module 2；Dynamic electric resistor module 2 has different resistance values according to the type of voltage wave, works as receiving
When Lightning Over-voltage wave, the resistance value of dynamic electric resistor module 2 makes the voltage at the both ends thyristor T1/T2 in thyristor valve module 1 small
In the conducting voltage of thyristor T1/T2.
Controllable arrester thyristor valve switch provided by the embodiment of the utility model is realizing that each layer thyristor valve module is equal
While pressure, realizes and inhibit thyristor valve switch response Lightning Over-voltage, so as to avoid thyristor valve switch because of excessive electricity
Rheology rate and damage, relative to existing controllable arrester thyristor valve switch, do not increase additional circuit structure, structure letter
Single, internal electric field is evenly distributed, and improves the reliability of thyristor valve switch.
As shown in Figure 1, above-mentioned thyristor valve module includes: the first thyristor T1 and the second thyristor T2 of reverse parallel connection,
Thyristor valve module in the utility model embodiment uses BOD from triggering mode, in the anode and gate pole of the first thyristor T1
The anode and gate pole for being parallel with the first trigger module B1, the second thyristor T2 are parallel with the second trigger module B2.When receiving operates
When overvoltage, the first trigger module and the second trigger module detect the both end voltage of the thyristor in parallel with itself respectively, will be brilliant
The both end voltage of brake tube is compared with preset threshold, when the both end voltage of thyristor is greater than preset threshold, above-mentioned first touching
Module and the breakdown conducting of the second trigger module, current direction gate circuit transistor gate are sent out, and then triggers turn on thyristors.In an embodiment
In, first trigger module B1, the second trigger module B2 can be breakdown diode, but the utility model is not limited thereto.
In a preferred embodiment, thyristor valve switch may include concatenated 32 layers of thyristor valve module, according to practical work
Condition select withstanding voltage 8.5kV or more than, the through-flow 1900A of tolerance or more than thyristor.But the layer of above-mentioned thyristor valve module
The withstanding voltage of several, selected thyristor, the numerical value that tolerance is through-flow, are for example, being not intended to limit the utility model.
For arrester, the voltage's distribiuting characteristic of industrial-frequency alternating current pressure is determined by its static capacity, therefore, optional
Ground, each dynamic electric resistor module of the utility model embodiment selects high-precision, with the capacitor C of model, to realize multilayer crystalline substance
Pressure of the brake tube valve module under three kinds of continuous running voltage (power-frequency voltage), switching overvoltage and Lightning Over-voltage operating conditions.?
Under continuous running voltage and Lightning Over-voltage, the reliable turn-off of each thyristor valve module in thyristor valve switch ensure that；It is grasping
Make under overvoltage, ensure that each thyristor valve module can simultaneously turn in thyristor valve switch, to avoid due to thyristor
The damage of thyristor device caused by compression between valve module is unbalanced and the case where can not be connected.Meanwhile being existed using capacitor
The characteristic that different impedances are presented under different frequency involves thyristor according to various types voltage in the utility model embodiment
Operation voltage threshold value selects capacitance to constitute dynamic electric resistor module in the capacitor C of 1~2nF.
The utility model embodiment additionally provides a kind of controllable arrester, as shown in Fig. 2, on the controllable arrester includes:
The controllable arrester thyristor valve switch of embodiment offer is provided.
By thyristor valve switch therein, while realizing that each layer thyristor valve module is pressed, it is brilliant to realize inhibition
Brake tube threshold switch responds Lightning Over-voltage, damages so as to avoid thyristor valve switch because of super-high-current change rate, relative to
Existing controllable arrester does not increase additional circuit structure, and structure is simple, and internal electric field is evenly distributed, and improves reliability.
As shown in Fig. 2, controllable arrester provided by the embodiment of the utility model further include: the controlled portion of arrester 3 and lightning-arrest
Device fixed part 4, the controlled portion 3 of arrester and one end of the parallel circuit of thyristor valve switch composition are grounded, and other end connection is lightning-arrest
Device fixed part 4.The controlled portion 3 of arrester is for limiting switching overvoltage caused by divide-shut brake or single-pole reclosing, in switching impulse
When the controlled portion 3 of arrester be shorted by thyristor valve switch, put into operation again after switching impulse, the controlled portion of arrester 3 with it is lightning-arrest
4 collective effect of device fixed part reduces operation chargeability, ensures arrester operational reliability.Arrester fixed part 4 is for absorbing system
Excessive power in overvoltage of uniting.It should be noted that switching overvoltage only absorbs energy, thunder and lightning mistake by arrester fixed part 4
Energy is absorbed by arrester fixed part 4 and the controlled portion 3 of arrester jointly when voltage or power-frequency overvoltage.
The arrester valve piece element as used in the controlled portion 3 of arrester and arrester fixed part 4 is fixed, single layer thyristor
The resistance R that voltage depends mainly on thyristor valve switch is born at thyristor both ends in valve modulekSize, in thyristor valve module
Thyristor both ends bear voltage U calculation formula are as follows:
Wherein, RMOA1For the resistance of arrester fixed part, RMOA2For the resistance in the controlled portion of arrester, RkFor controllable arrester
The resistance of controlled portion's parallel thyristors threshold switch, U0For system voltage, n is the number of plies of thyristor valve module used.
The characteristic of different impedances is presented according to capacitor under different type voltage wave wave front time, the utility model embodiment mentions
The controllable arrester of confession, under power-frequency voltage, dynamic electric resistor module resistance value is very big, and leakage current is minimum, and thyristor valve module is suitable
In open circuit；Under switching overvoltage, dynamic electric resistor module resistance value is reduced, and voltage is born at the thyristor both ends in thyristor valve module
Greater than the conducting voltage of thyristor, turn on thyristors, the controlled portion of arrester is shorted, to realize that depth reduction operated electricity
Pressure；Under Lightning Over-voltage, dynamic electric resistor module resistance value is further decreased, and electricity is born at the thyristor both ends in thyristor valve module
Pressure is less than the conducting voltage of thyristor, and thyristor is in an off state, so as to avoid thyristor valve module due to the electricity that was struck by lightning
The case where pressing huge current changing rate and damaging realizes the purpose for inhibiting thyristor valve switch response Lightning Over-voltage.
Controllable arrester provided by the embodiment of the utility model, using switching overvoltage wave front time much larger than the electricity that was struck by lightning
The characteristics of pressure and capacitor the low impedance characteristic under high-frequency signal, do not influencing controllable arrester Suppressing Switching Overvoltage
On the basis of, realize the purpose for inhibiting controllable arrester response Lightning Over-voltage.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes among the protection scope created still in the utility model.
Claims (8)
1. a kind of controllable arrester thyristor valve switch characterized by comprising the mutually concatenated thyristor valve module of multilayer,
Every layer of thyristor valve module is parallel with dynamic electric resistor module；
The dynamic electric resistor module has different resistance values according to the type of voltage wave, described when bearing Lightning Over-voltage wave
The resistance value of dynamic electric resistor module makes the voltage at thyristor both ends in the thyristor valve module less than the conducting of the thyristor
Voltage.
2. controllable arrester thyristor valve switch according to claim 1, which is characterized in that the dynamic electric resistor module packet
It includes: capacitor.
3. controllable arrester thyristor valve switch according to claim 2, which is characterized in that the value of the capacitor be 1~
2nF。
4. controllable arrester thyristor valve switch according to claim 1, which is characterized in that the thyristor valve module packet
It includes: the first thyristor and the second thyristor of reverse parallel connection.
5. controllable arrester thyristor valve switch according to claim 4, which is characterized in that further include: the first trigger mode
Block and the second trigger module, first trigger module are parallel to the anode and gate pole of first thyristor, second touching
Wired in parallel is sent out in the anode and gate pole of second thyristor；
First trigger module and the second trigger module are respectively used to detect the both end voltage of the thyristor in parallel with itself, will
The both end voltage of the thyristor is compared with preset threshold, when the both end voltage of the thyristor is greater than the preset threshold
When, the triggering turn on thyristors in parallel with itself.
6. a kind of controllable arrester characterized by comprising controllable arrester crystalline substance lock as described in any one in claim 1-5
Pipe valve switch.
7. controllable arrester according to claim 6, which is characterized in that further include: the controlled portion of arrester, with the brilliant lock
Pipe valve switch in parallel.
8. controllable arrester according to claim 7, which is characterized in that further include: arrester fixed part；The arrester
One end of the parallel circuit of controlled portion and thyristor valve switch composition is grounded, and the other end connects the arrester fixed part.
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| CN201820770973.7U CN208445535U (en) | 2018-05-23 | 2018-05-23 | A kind of the controllable arrester thyristor valve switch and controllable arrester of inhibition response Lightning Over-voltage |
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| CN201820770973.7U CN208445535U (en) | 2018-05-23 | 2018-05-23 | A kind of the controllable arrester thyristor valve switch and controllable arrester of inhibition response Lightning Over-voltage |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108649937A (en) * | 2018-05-23 | 2018-10-12 | 全球能源互联网研究院有限公司 | A kind of controllable arrester thyristor valve switch of inhibition response Lightning Over-voltage |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108649937A (en) * | 2018-05-23 | 2018-10-12 | 全球能源互联网研究院有限公司 | A kind of controllable arrester thyristor valve switch of inhibition response Lightning Over-voltage |
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Address after: 102209 18 Riverside Avenue, Changping District science and Technology City, Beijing Co-patentee after: State Grid Corporation of China Patentee after: Global energy Internet Institute, Inc. Co-patentee after: Electric Power Research Institute of State Grid Shandong Electric Power Company Co-patentee after: China Electric Science Research Institute Co., Ltd. Address before: 102209 18 Riverside Avenue, Changping District science and Technology City, Beijing Co-patentee before: State Grid Corporation of China Patentee before: Global energy Internet Institute, Inc. Co-patentee before: Electric Power Research Institute of State Grid Shandong Electric Power Company Co-patentee before: China Electric Science Research Institute Co., Ltd. |
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