CN205945149U - A power supply unit for middling pressure circuit breaker cabinet secondary control loop - Google Patents
A power supply unit for middling pressure circuit breaker cabinet secondary control loop Download PDFInfo
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- CN205945149U CN205945149U CN201620896702.7U CN201620896702U CN205945149U CN 205945149 U CN205945149 U CN 205945149U CN 201620896702 U CN201620896702 U CN 201620896702U CN 205945149 U CN205945149 U CN 205945149U
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- Prior art keywords
- power supply
- supply unit
- module
- control loop
- secondary control
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Abstract
The utility model relates to a power supply unit for middling pressure circuit breaker cabinet secondary control loop. Power supply unit includes alternating current power supply, first interchange commentaries on classics DC power supply module, voltage control circuit, electric capacity group and contravariant module, DC power supply module is changeed in first interchange input with alternating current power supply's output links to each other, DC power supply module is changeed in first interchange output respectively with the input of voltage control circuit with the first input end of contravariant module links to each other, the output of voltage control circuit respectively with the second input of contravariant module with the one end of electric capacity group links to each other, the other end of electric capacity group with the third input of contravariant module links to each other. The utility model provides a power supply unit need not the storage battery power supply, the maintenance is simple and can operate (experiment) circuit breaker divide -shut brake under the electroless circumstances of high pressure.
Description
Technical field
This utility model is related to electronic technology field, and more particularly to one kind is used for medium voltage breaker cabinet secondary control loop
Supply unit.
Background technology
The supply unit being used for medium voltage breaker cabinet secondary control loop in the market is a lot, very miscellaneous, for example on the market
Supply unit have UPS (Uninterruptable Power System/Uninterruptable Power Supply, no
Uninterruptible power), direct current power box or DC power control screen etc..These supply units are essentially all with storage battery power supply, deposit
In following defect：, using not circulating, perishable or replacing is frequent for accumulator；Take inlet wire PT (potential transformer, electricity
Pressure transformer) voltage or low-voltage distribution voltage need to adopt direct current power box, and linear quadratic control cable connection is various, and working drawing review is tired
Difficult；(test) circuit-breaker switching on-off can not be operated in the case of high pressure no electricity.
Utility model content
Based on this it is necessary to be directed to the problems referred to above, provide a kind of power supply for medium voltage breaker cabinet secondary control loop
Device, without storage battery power supply, easy to maintenance and can high pressure no electricity in the case of operate (test) circuit-breaker switching on-off.
In order to achieve the above object, this utility model takes technical scheme below：
A kind of supply unit for medium voltage breaker cabinet secondary control loop, turns straight including alternating current power supply, the first exchange
Stream power module, voltage control circuit, capacitance group and inversion module；The input of described first AC/DC power module with
The outfan of described alternating current power supply is connected；The outfan of described first AC/DC power module is controlled with described voltage respectively
The input of circuit is connected with the first input end of described inversion module；The outfan of described voltage control circuit respectively with described
Second input of inversion module is connected with one end of described capacitance group；The other end of described capacitance group and described inversion module
3rd input is connected.
This utility model is used for the supply unit of medium voltage breaker cabinet secondary control loop, is compared to each other with prior art
When, possess advantages below：
1st, supply unit capacitance group of the present utility model substitutes accumulator and is charged, capacitance group can recycle and
Change without frequent, solve prior art using accumulator using not circulating, perishable or change frequently defect；
2nd, supply unit of the present utility model decreases direct current power box and linear quadratic control cable, and maintenance maintenance is convenient, can
Indoor to be directly installed on breaker cabinet secondary line；
3rd, during normal work, height is pressed with electricity and can carry out circuit-breaker switching on-off after breaker energy storage is good, when having ground connection, overload
When protection or high voltage fault instantaneous loss of pressure, it is quick that supply unit of the present utility model can store electricity time delay electric discharge by capacitance group
Separating brake, meeting faulty or interruption maintenance can manual brake separating.
Brief description
The structure that Fig. 1 is used for the supply unit embodiment one of medium voltage breaker cabinet secondary control loop for this utility model is shown
It is intended to；
The structure that Fig. 2 is used for the supply unit embodiment two of medium voltage breaker cabinet secondary control loop for this utility model is shown
It is intended to；
Fig. 3 is the circuit diagram of this utility model the first AC/DC power module specific embodiment；
Fig. 4 is the circuit diagram of this utility model voltage control circuit specific embodiment；
Fig. 5 is the circuit diagram of this utility model inversion module specific embodiment.
Specific embodiment
For further illustrating the effect of technological means that this utility model taken and acquirement, below in conjunction with the accompanying drawings and relatively
Good embodiment, to the technical solution of the utility model, carries out clear and complete description.It should be noted that this utility model
All component values in accompanying drawing, element model and number of elements etc. are not limited by the accompanying figures, can be all other equivalents.
As shown in figure 1, a kind of supply unit for medium voltage breaker cabinet secondary control loop, including alternating current power supply 100,
First AC/DC power module 200, voltage control circuit 300, capacitance group 400 and inversion module 500；Described first exchange
The input of DC power module 200 is connected with the outfan of described alternating current power supply 100；Described first AC/DC power
The outfan of module 200 respectively with the input of described voltage control circuit 300 and the first input end of described inversion module 500
It is connected；The outfan of described voltage control circuit 300 the second input and the described capacitance group with described inversion module 500 respectively
400 one end is connected；The other end of described capacitance group 400 is connected with the 3rd input of described inversion module 500.
In order to more fully understand this utility model, below each element of the present utility model is described in detail.
As shown in Fig. 2 described alternating current power supply 100 can include PT power supply and stand-by power supply.PT power supply is high pressure PT cabinet
Control power supply, be 10KV (kilovolt)/0.1KV or 10KV/0.22KV etc..Stand-by power supply can for interim electromotor, UPS or its
Its alternating current power supply, alternating voltage can be 220V (volt).In the case of high pressure no electricity, chopper can be carried out using stand-by power supply and divide
Close a floodgate, in fault or in emergency circumstances, no matter whether system voltage normally can be carried out manual brake separating.In addition in maintenance, inspection
Can access stand-by power supply when surveying or testing to power it is ensured that control loop normal work, effectively prevent temporary electricity or counter send high pressure
Dangerous.
When alternating current power supply 100 includes multiple power supply, supply unit of the present utility model can also include being connected to described
Power change-over switch between alternating current power supply 100 and described first AC/DC power module 200.Power change-over switch is permissible
Using power change-over switch existing in prior art.For example include a PT power supply and a stand-by power supply in alternating current power supply
When, using double power supply converting switch, the power supply accessing is switched over, make corresponding control source first AC/DC power
Module 200.
As shown in figure 3, the circuit diagram for the first AC/DC power module 200 specific embodiment.First exchange turns straight
Stream power module 200 is the module that alternating voltage is converted to low-voltage direct, such as by general AC (Alternating
Current, alternating current) 110V or AC220V be converted into DC (direct current, unidirectional current) 12-15V, to capacitance group 400
Charge.First AC/DC power module 200 has the functions such as double loop input, counnter attack power transmission, is also provided with light
Display circuit.
Voltage control circuit 300 has analysis electric capacity pool-size and voltage, simultaneously drives the break-make work(of inversion module 500
Can, in one embodiment, described voltage control circuit 300 is used for being more than the first setting value or less than the second setting in voltage
Close described inversion module during value, be more than or equal to when described second setting value is less than or equal to described first setting value in voltage and open
Described inversion module, wherein said first setting value is more than described second setting value.First setting value and the second setting value are permissible
Arrange according to actual needs, the such as first setting value is 13V, the second setting value is 10.5V, when voltage is more than 13V or is less than
During 10.5V, voltage control circuit 300 drives inversion module 500 to disconnect, when voltage is more than or equal to 10.5V less than or equal to 13V,
Inversion module 500 normal work.As shown in figure 4, being the circuit diagram of voltage control circuit 300 specific embodiment, voltage controls electricity
Road 300 includes the electronic devices and components such as model ST monolithic paster 8S003F3Pb, 7S33 and paster 1A, and CK-150-15 IGCT is used for
Control charging upper limit and lower limit, voltage control circuit 300 can also arrange lighting display circuit.
For guaranteed capacity, described capacitance group includes one or more farad capacitors.First AC/DC power module
200 time delay power-on times are generally 3-10 minute, need the size according to load to arrange the farad capacitor of respective volume, meet speed
Disconnected bus no press can normal reliable separating brake it is ensured that the safety of equipment.Each farad capacitor can determine string according to amount of capacity
Connection or parallel connection, for example, in one embodiment, capacitance group is in series with 6 farad capacitors, and each farad capacitor is
2.7V/500F (farad).
Inversion module 500 is used for for DC voltage being converted to alternating voltage, and the numerical value of the alternating voltage of concrete conversion is permissible
Determine according to actual needs.Inversion module 500 can be pure sine wave inversion module etc..As shown in figure 5, being inversion module 500
The circuit diagram of specific embodiment, inversion module 500 includes the electronics such as semiconductor switch pipe, CD4027,4071,4072 chip unit
Part.
When needing alternating voltage, can directly export from inversion module 500, if necessary to DC voltage, then it is right to need
The alternating voltage of inversion module 500 output is changed, so, in one embodiment, as shown in Fig. 2 of the present utility model
Supply unit can also include the second AC/DC power module being connected respectively with the outfan of described inversion module 500
600 or the 3rd AC/DC power module 700, the unidirectional current of wherein said 3rd AC/DC power module 700 output
Pressure is different from the DC voltage of described second AC/DC power module 600 output.Second AC/DC power module 600
Or the 3rd the DC voltage specifically changed of AC/DC power module 700 can be configured as needed, for example normal at present
The DC voltage seen is DC220V, DC110V, the second AC/DC power module 600 or the 3rd AC/DC power module
700 can be power module or the power module for AC220V/DC220V350W of model AC220V/DC110V350W,
AC220V is converted to DC110V by the power module of AC220V/DC110V350W, and the power module of AC220V/DC220V350W will
AC220V is converted to DC220V.
In one embodiment, described supply unit provided by the utility model may be mounted in housing.In order to and
When understand supply unit working condition, the display lamp indicating described supply unit working condition can be provided with outside described housing
Circuit.Indicator light circuit could be arranged to light emitting diode, and light emitting diode is connected with drive circuit, in supply unit fault or
Show different colors during normal work, such as during redness, show supply unit fault, when green, represent that supply unit works simultaneously
There is corresponding output.In addition, being also provided with outside housing showing the numeric display unit of capacitance group capacitance voltage.
Supply unit adds protective tube in input and outfan, realizes line power source short-circuit protection or overload protection.Institute
State and be also provided with external wiring terminal on housing, facilitate wire to connect, external wiring terminal is comprised according to supply unit
Module determine.In one embodiment, described housing is additionally provided with the first external wiring terminal and the second external terminal
Son, described first external wiring terminal is connected with described PT power supply, and described second external wiring terminal exchanges with described second
DC power module is connected.In another embodiment, described housing is additionally provided with the first external wiring terminal and
Three external wiring terminals, described first external wiring terminal is connected with described PT power supply, described 3rd external wiring terminal with
Described 3rd AC/DC power module is connected.
As shown in Fig. 2 the input external tapping of supply unit is PT power supply, output external tapping is the second AC/DC power
Module or the 3rd AC/DC power module, then be provided with housing external wiring terminal L11 terminal, N11 terminal ,+
KM11 terminal ,-kM11 terminal, or be provided with housing external wiring terminal L11 terminal, N11 terminal ,+kM21 terminal and-
KM21 terminal, L11 terminal, N11 terminal are connected with PT power supply ,+kM11 terminal ,-kM11 terminal and the second AC/DC power
Module connects, and+kM21 terminal and-kM21 terminal are connected with the 3rd AC/DC power module.In addition, supply unit is faulty
When can bypass output, facilitate overhaul of the equipments and continuity of operation, for example pass through L11, N can achieve bypass output.
This utility model is used for the supply unit of medium voltage breaker cabinet secondary control loop, is compared to each other with prior art
When, possess advantages below：
1st, supply unit capacitance group of the present utility model substitutes accumulator and is charged, capacitance group can recycle and
Change without frequent, solve prior art using accumulator using not circulating, perishable or change frequently defect；
2nd, supply unit of the present utility model decreases direct current power box and linear quadratic control cable, and maintenance maintenance is convenient, can
Indoor to be directly installed on breaker cabinet secondary line；
3rd, during normal work, height is pressed with electricity and can carry out circuit-breaker switching on-off after breaker energy storage is good, when having ground connection, overload
When protection or high voltage fault instantaneous loss of pressure, it is quick that supply unit of the present utility model can store electricity time delay electric discharge by capacitance group
Separating brake, meeting faulty or interruption maintenance can manual brake separating；
4th, supply unit of the present utility model is provided with stand-by power supply, in the case of high pressure no electricity, can be entered using stand-by power supply
Row circuit-breaker switching on-off, maintenance, detection or can access stand-by power supply when testing and power it is ensured that control loop normal work, effectively
Prevent temporary electricity or counter send that Keep Clear-High Voltage.
Each technical characteristic of embodiment described above can arbitrarily be combined, for making description succinct, not to above-mentioned reality
The all possible combination of each technical characteristic applied in example is all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all it is considered to be the scope of this specification record.
Embodiment described above only have expressed several embodiments of the present utility model, and its description is more concrete and detailed,
But therefore can not be interpreted as the restriction to utility model patent scope.It should be pointed out that the common skill for this area
For art personnel, without departing from the concept of the premise utility, some deformation can also be made and improve, these broadly fall into
Protection domain of the present utility model.Therefore, the protection domain of this utility model patent should be defined by claims.
Claims (10)
1. a kind of supply unit for medium voltage breaker cabinet secondary control loop it is characterised in that include alternating current power supply, first
AC/DC power module, voltage control circuit, capacitance group and inversion module；
The input of described first AC/DC power module is connected with the outfan of described alternating current power supply；Described first exchange
The outfan of DC power module is inputted with the input of described voltage control circuit and the first of described inversion module respectively
End is connected；The outfan of described voltage control circuit respectively with the second input of described inversion module and described capacitance group one
End is connected；The other end of described capacitance group is connected with the 3rd input of described inversion module.
2. the supply unit for medium voltage breaker cabinet secondary control loop according to claim 1 is it is characterised in that institute
State capacitance group and include one or more farad capacitors.
3. the supply unit for medium voltage breaker cabinet secondary control loop according to claim 1 is it is characterised in that institute
State alternating current power supply and include PT power supply and stand-by power supply.
4. the supply unit for medium voltage breaker cabinet secondary control loop according to claim 3 is it is characterised in that go back
Including the power change-over switch being connected between described alternating current power supply and described first AC/DC power module.
5. the supply unit for medium voltage breaker cabinet secondary control loop according to claim 1 is it is characterised in that institute
Stating inversion module is pure sine wave inversion module.
6. the supply unit for medium voltage breaker cabinet secondary control loop according to claim 3 is it is characterised in that go back
Exchange including the second AC/DC power module or the 3rd being connected with the outfan of described inversion module respectively and turn unidirectional current
Source module, the DC voltage of wherein said 3rd AC/DC power module output is different from described second exchange and turns unidirectional current
The DC voltage of source module output.
7. the supply unit for medium voltage breaker cabinet secondary control loop according to claim 6 is it is characterised in that institute
State supply unit to be arranged in housing.
8. the supply unit for medium voltage breaker cabinet secondary control loop according to claim 7 is it is characterised in that institute
State and outside housing, be provided with the indicator light circuit indicating described supply unit working condition.
9. the supply unit for medium voltage breaker cabinet secondary control loop according to claim 7 is it is characterised in that institute
State and the first external wiring terminal and the second external wiring terminal be additionally provided with housing, described first external wiring terminal with described
PT power supply is connected, and described second external wiring terminal is connected with described second AC/DC power module.
10. the supply unit for medium voltage breaker cabinet secondary control loop according to claim 7 it is characterised in that
First external wiring terminal and the 3rd external wiring terminal, described first external wiring terminal and institute are additionally provided with described housing
State PT power supply to be connected, described 3rd external wiring terminal is connected with described 3rd AC/DC power module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620896702.7U CN205945149U (en) | 2016-08-17 | 2016-08-17 | A power supply unit for middling pressure circuit breaker cabinet secondary control loop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620896702.7U CN205945149U (en) | 2016-08-17 | 2016-08-17 | A power supply unit for middling pressure circuit breaker cabinet secondary control loop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205945149U true CN205945149U (en) | 2017-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620896702.7U Active CN205945149U (en) | 2016-08-17 | 2016-08-17 | A power supply unit for middling pressure circuit breaker cabinet secondary control loop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205945149U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107124091A (en) * | 2016-12-15 | 2017-09-01 | 刘会明 | The airtight and mining illumination/signal of flame-proof type liquid-cooled（Hand over）DC intelligent power supply |
| CN109660015A (en) * | 2019-02-15 | 2019-04-19 | 成都信息工程大学 | Uninterruptible power supply and uninterrupted power supply method with seamless switching ability |
-
2016
- 2016-08-17 CN CN201620896702.7U patent/CN205945149U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107124091A (en) * | 2016-12-15 | 2017-09-01 | 刘会明 | The airtight and mining illumination/signal of flame-proof type liquid-cooled（Hand over）DC intelligent power supply |
| CN109660015A (en) * | 2019-02-15 | 2019-04-19 | 成都信息工程大学 | Uninterruptible power supply and uninterrupted power supply method with seamless switching ability |
| CN109660015B (en) * | 2019-02-15 | 2023-10-13 | 成都信息工程大学 | Uninterruptible power supply with seamless switching capability and uninterruptible power supply method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |