CN207571272U - A kind of relay protection outlet detecting system that circuit is provided based on direct current - Google Patents
A kind of relay protection outlet detecting system that circuit is provided based on direct current Download PDFInfo
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- CN207571272U CN207571272U CN201721733844.2U CN201721733844U CN207571272U CN 207571272 U CN207571272 U CN 207571272U CN 201721733844 U CN201721733844 U CN 201721733844U CN 207571272 U CN207571272 U CN 207571272U
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- direct current
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- detecting system
- power supply
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Abstract
The utility model discloses it is a kind of based on direct current provide circuit relay protection outlet detecting system, including：Direct current positive electricity leading-out terminal, pulse detection input terminal, protection screen corresponding wiring terminal, output clamping lower end, DC/DC boost modules, DC power supply, pulse-detecting circuit, the first detection connecting line and the second detection connecting line；DC power supply is connect by DC/DC boost modules with direct current positive electricity leading-out terminal；Direct current positive electricity leading-out terminal is connect by the first detection connecting line with protection screen corresponding wiring terminal；Pulse-detecting circuit is connect with pulse detection input terminal；The connection of pulse detection input terminal is connect by the second detection connecting line with output clamping lower end.Thus; equipment can be connected by protection screen corresponding wiring terminal by a series of connections with the DC power supply in relay protection outlet detecting system; equipment internal circuit can be pressurized to 36V by DC power supply, ensure the situation of the normal detection device of relay protection outlet detecting system energy.
Description
Technical field
The utility model is related to circuit fields, go out more particularly, to a kind of relay protection that circuit is provided based on direct current
Mouth detecting system.
Background technology
Work as protective relaying device（Such as main transformer protection, bus differential protection）When progress stand-alone debugging examination is replaced in technological transformation, often
There is the situation that shunt tripping circuit is not yet accessed, even if device action connects the way outlet contact, corresponding shunt tripping outlet pressure at this time
It there will not be potential change on plate.Common relay protection outlet detector is protected by being obtained to platen potential situation of change
Action message, therefore the way outlet situation can not be detected in the case.
In addition, the releasing that main transformer protection device draws in favour of based Cb Failure Protection presses off lock and has plenty of with 24V light current, the electricity again
Floating, common relay protection outlet detecting system can not then examine the way outlet situation in the case over the ground in source
It surveys.
Utility model content
The utility model is that the releasing that the above-mentioned prior art is overcome to draw in favour of based Cb Failure Protection in main transformer protection device is answered
When pressing off lock and having plenty of with 24V light current, common relay protection outlet detecting system can not be detected the way outlet situation
The problem of, a kind of relay protection outlet detecting system that circuit is provided based on direct current is provided.
In order to solve the above technical problems, the technical solution of the utility model is as follows：
A kind of relay protection outlet detecting system that circuit is provided based on direct current, including：Direct current positive electricity leading-out terminal, pulse
Detection input, protection screen corresponding wiring terminal, output clamping lower end, DC/ DC boost modules, DC power supply, circuit, arteries and veins
Rush detection circuit, the first detection connecting line and the second detection connecting line；
The DC power supply is connect by the DC/ DC boost modules with the direct current positive electricity leading-out terminal；
The direct current positive electricity leading-out terminal is connected by the described first detection connecting line with the protection screen corresponding wiring terminal
It connects；
The pulse-detecting circuit is connect with the pulse detection input terminal；
The pulse detection input terminal connection is connected by the described second detection connecting line with the output clamping lower end
It connects；
The protection screen corresponding wiring terminal and the output clamping lower end are connected on busbar, wherein, on the busbar
It has been sequentially connected with that anode is spaced apart, protection act contact and cathode are spaced apart；
One end of the protection screen corresponding wiring terminal is spaced apart with anode to be connect, the protection screen corresponding wiring terminal it is another
One end is connect with protection act contact；
One end of the output clamping lower end is spaced apart with cathode to be connect, and the other end of the output clamping lower end passes through outlet
Pressing plate upper end is connect with the protection act contact.
In order to facilitate storage protective relaying device and external DC power supply in use, it is preferred that described to be based on direct current
The relay protection outlet detecting system for providing circuit further includes housing, and the DC power supply and the DC/ DC boost modules are all set
It puts in the housing.
Being opened in order to avoid protective relaying device in 24V light current fashionable can not normally detect, it is preferred that the DC power supply can
Circuit voltage is promoted to by 36V by DC/ DC boost modules.
In one embodiment, the relay protection outlet detecting system that circuit is provided based on direct current further includes protection electricity
Resistance；
The resistance value of the protective resistance is 1m Ω, and described protective resistance one end is connect with the DC power supply, the protection
The other end of resistance is connect with the direct current positive electricity leading-out terminal.
Compared with prior art, the advantageous effect of technical solutions of the utility model is：
Increase a DC power supply to protective relaying device, when being spaced apart between equipment and original power supply is disconnected or connects
Equipment be 24V light current when, the detection connecting line of protection screen corresponding wiring terminal is disconnected on original power interface or terminal,
One end that this detection connecting line disconnects with direct current positive electricity leading-out terminal is connected, makes to be adjusted to 36V on the circuit of equipment, relay
Protective device still can normal detection device situation.
In addition, electric current crosses the equipment that macrolesion is detected when detecting in order to prevent, the utility model further includes a 1m Ω
Resistance, have following two effects：1st, when direct current positive electricity leading-out terminal is accidentally shorted to ground, the electric current for flowing through the circuit is small
In 0.1mA, ensure that the power supply provides circuit and will not damage；2nd, when direct current positive electricity leading-out terminal enters live end on protection screen by misconnection
Son, then straight-flow system through the resistance eutral grounding, will not cause DC system earth fault in substation.
Description of the drawings
It in order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is a kind of relay protection outlet detecting system that circuit is provided based on direct current；
1, which represents anode, is spaced apart, and 5, which represent cathode, is spaced apart, and 2 represent protection screen corresponding wiring terminal, and 3, which represent protection act, connects
Point, 4 represent output clamping upper end, and 6 represent output clamping lower end, and 7 represent direct current positive electricity leading-out terminal, and 8 to represent pulse detection defeated
Enter terminal, 9 represent protective resistance, and 10 represent pulse-detecting circuit, and 11 represent the first detection connecting line, and 12 represent the second detection company
Wiring.
Specific embodiment
The attached figures are only used for illustrative purposes and cannot be understood as limitating the patent；
In order to more preferably illustrate the present embodiment, the certain components of attached drawing have omission, zoom in or out, and do not represent actual product
Size；
To those skilled in the art, it is to be appreciated that certain known features and its explanation, which may be omitted, in attached drawing
's.
The technical solution of the utility model is described further with reference to the accompanying drawings and examples.
Embodiment 1
As shown in Figure 1, a kind of relay protection outlet detecting system that circuit is provided based on direct current, including：Direct current positive electricity is defeated
Go out terminal 7, pulse detection input terminal 8, protection screen corresponding wiring terminal 2, output clamping lower end 6, DC/ DC boost modules, straight
Galvanic electricity source, pulse-detecting circuit 10, first detect connecting line 11 and second and detect connecting line 12.
The original low pressure 5V power supplys of relay protection outlet detecting system of circuit are provided based on direct current, DC power supply passes through original
Power supply and the cooperation of DC/ DC boost modules, rise to 36V, DC power supply also passes through DC/ DC by the 5V voltages that original power supply provides
Boost module is connect with direct current positive electricity leading-out terminal 7.
Direct current positive electricity leading-out terminal 7 connect with protection screen corresponding wiring terminal 2 by the first detection connecting line 11, makes to break
The 36V circuit communications that the equipment of electricity or brownout is provided with being provided the relay protection outlet detecting system of circuit based on direct current.
The relay protection outlet detecting system of circuit is provided based on direct current in order to provide detection function, pulse-detecting circuit 10
It is connect with pulse detection input terminal 8.
The connection of pulse detection input terminal 8 is connect, so as to make by the second detection connecting line 12 with output clamping lower end 6
Circuitry is connected with pulse-detecting circuit 10, the abnormal conditions of 10 energy detection device of pulse-detecting circuit.
Protection screen corresponding wiring terminal 2 and the output clamping lower end 6 are connected on busbar, wherein, sequentially connect on busbar
It is connected to that anode is spaced apart 1, protection act contact 3 and cathode is spaced apart 5.
One end of protection screen corresponding wiring terminal 2 is spaced apart 1 with anode and connect, the other end of protection screen corresponding wiring terminal 2
It is connect with protection act contact 3；One end of output clamping lower end 6 is spaced apart 5 with cathode and connect, the other end of output clamping lower end 6
It is connect by output clamping upper end 4 with protection act contact 3.
In actual use, because newly-increased DC power supply has the problem of mobile inconvenient, electricity is provided based on direct current
The relay protection outlet detecting system on road further includes housing, and DC power supply and DC/ DC boost modules are all disposed in housing.
In actual use, specific operating process is as follows：
Equipment breaks down, and testing staff uses provides the relay protection outlet detecting system of circuit to equipment based on direct current
It is detected.For testing staff first using the second detection connecting line 12, one end is connected to output clamping lower end 6, other end connection
To pulse detection input terminal 8.If detected successfully, it is next normally carried out conventional steps；If find voltage during detection
Too low or power-off, then carry out following steps：
First detection connecting line 11 of equipment is disconnected, and will be switched off one from the interface or terminal of connection existing power supply
End reconnects to direct current positive electricity leading-out terminal 7, and equipment is made to connect the relay protection outlet detection system for providing circuit based on direct current
Equipment builtin voltage is risen to 36V by the DC power supply in system, makes to provide the relay protection outlet detection system of circuit based on direct current
System can detect successfully, continue conventional steps.
Embodiment 2
On the basis of 1 technical solution of embodiment, to based on direct current provide circuit relay protection outlet detecting system into
Row is following to be improved：
In practical operation, for avoid equipment connect DC power supply when moment by super-high-current injury device, be based on
The relay protection outlet detecting system that direct current provides circuit further includes protective resistance 9.
In order to reduce electric current, achieve the effect that protect equipment, the resistance value of protective resistance 9 is 1m Ω.Protective resistance is located at base
Inside the relay protection outlet detecting system for providing circuit in direct current, 9 one end of protective resistance is connect with DC power supply, protective resistance
9 other end is connect with direct current positive electricity leading-out terminal 7.Protective resistance 9 has following two effects：1st, when direct current positive electricity output terminal
When son is accidentally shorted to ground, the electric current for flowing through the circuit is less than 0.1mA, ensures that the power supply provides circuit and will not damage；2nd, when straight
Stream positive electricity leading-out terminal live terminal on protection screen is entered by misconnection, then in substation straight-flow system through the resistance eutral grounding, Bu Huizao
Into DC system earth fault.
The same or similar label correspond to the same or similar components；
The terms describing the positional relationship in the drawings are only for illustration, it is impossible to be interpreted as the limitation to this patent；
Obviously, above-described embodiment of the utility model is only intended to clearly illustrate the utility model example, and
It is not the restriction to the embodiment of the utility model.For those of ordinary skill in the art, in above description
On the basis of can also make other variations or changes in different ways.There is no need and unable to give all embodiments
It is exhaustive.All any modification, equivalent and improvement made within the spirit and principles of the present invention etc., should be included in
Within the protection domain of the utility model claims.
Claims (4)
1. a kind of relay protection outlet detecting system that circuit is provided based on direct current, which is characterized in that including：The positive electricity output of direct current
Terminal（7）, pulse detection input terminal（8）, protection screen corresponding wiring terminal（2）, output clamping lower end（6）, DC/ DC boosting
Module, DC power supply, pulse-detecting circuit（10）, first detection connecting line（11）With the second detection connecting line（12）；
The DC power supply passes through the DC/ DC boost modules and the direct current positive electricity leading-out terminal（7）Connection；
The direct current positive electricity leading-out terminal（7）Pass through the described first detection connecting line（11）, terminals corresponding with the protection screen
Son（2）Connection；
The pulse-detecting circuit（10）With the pulse detection input terminal（8）Connection；
The pulse detection input terminal（8）Connection passes through the described second detection connecting line（12）, with the output clamping lower end
（6）Connection；
The protection screen corresponding wiring terminal（2）With the output clamping lower end（6）It is connected on busbar, wherein, the busbar
On be sequentially connected with anode and be spaced apart（1）, protection act contact（3）It is spaced apart with cathode（5）；
The protection screen corresponding wiring terminal（2）One end be spaced apart with the anode（1）Connection, the protection screen correspond to terminals
Son（2）The other end and the protection act contact（3）Connection；
The output clamping lower end（6）One end be spaced apart with the cathode（5）Connection, the output clamping lower end（6）It is another
End passes through the output clamping upper end（4）With the protection act contact（3）Connection.
2. the relay protection outlet detecting system according to claim 1 that circuit is provided based on direct current, which is characterized in that institute
It states the relay protection outlet detecting system based on direct current offer circuit and further includes housing, the DC power supply and the DC/ DC liters
Die block is all disposed in the housing.
3. the relay protection outlet detecting system according to claim 1 that circuit is provided based on direct current, which is characterized in that institute
36V can be promoted to by DC/ DC boost modules by circuit voltage by stating DC power supply.
4. the relay protection outlet detecting system according to claim 1 that circuit is provided based on direct current, which is characterized in that institute
It states the relay protection outlet detecting system based on direct current offer circuit and further includes protective resistance（9）；
The protective resistance（9）Resistance value for 1m Ω, the protective resistance（9）One end is connect with the DC power supply, the guarantor
Protect resistance（9）The other end and the direct current positive electricity leading-out terminal（7）Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721733844.2U CN207571272U (en) | 2017-12-13 | 2017-12-13 | A kind of relay protection outlet detecting system that circuit is provided based on direct current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721733844.2U CN207571272U (en) | 2017-12-13 | 2017-12-13 | A kind of relay protection outlet detecting system that circuit is provided based on direct current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207571272U true CN207571272U (en) | 2018-07-03 |
Family
ID=62688118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721733844.2U Active CN207571272U (en) | 2017-12-13 | 2017-12-13 | A kind of relay protection outlet detecting system that circuit is provided based on direct current |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117233515A (en) * | 2023-11-13 | 2023-12-15 | 广东电网有限责任公司佛山供电局 | Method and system for measuring state of outlet pressing plate |
-
2017
- 2017-12-13 CN CN201721733844.2U patent/CN207571272U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117233515A (en) * | 2023-11-13 | 2023-12-15 | 广东电网有限责任公司佛山供电局 | Method and system for measuring state of outlet pressing plate |
| CN117233515B (en) * | 2023-11-13 | 2024-02-13 | 广东电网有限责任公司佛山供电局 | Method and system for measuring state of outlet pressing plate |
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