CN206461533U - One kind maintenance power output apparatus - Google Patents
One kind maintenance power output apparatus Download PDFInfo
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- CN206461533U CN206461533U CN201621313363.1U CN201621313363U CN206461533U CN 206461533 U CN206461533 U CN 206461533U CN 201621313363 U CN201621313363 U CN 201621313363U CN 206461533 U CN206461533 U CN 206461533U
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Abstract
The utility model provides a kind of maintenance power output apparatus, including：Power supply circuit, for providing 12V DC voltages as initial voltage；Push-pull type booster circuit, the 12V DC voltage conversions for power supply circuit to be exported are 110V DC voltages and exported；Boost chopper, the 110V DC voltage conversions for push-pull type booster circuit to be exported are 345V DC voltages；Inverter circuit, for will be boosted by boost chopper after 345V DC voltage conversions 380V alternating voltages and to export.The utility model can provide DC12V, DC110V, AC380V, and totally 3 kinds of voltage class, as output, can meet more than 90% construction of transformer substation load needs, and flexible using safety；The link of long range jump lead is avoided, shortens the on-stream time of construction operation, it is thus also avoided that the risk for causing station electricity consumption to bypass the immediate leadership tripping operation is connect because maintenance power supply draws.
Description
Technical field
The utility model is related to technical field of power systems, more particularly to a kind of maintenance power output apparatus.
Background technology
In recent years, with transformer station the project such as each professional technological transformation, repairing it is newly-increased, inbound project under construction increases, inspection
Power supply place in various stations is repaiied frequently to use.Obtain the general service chamber jump lead using in slave station of mode of maintenance power supply as
It is main, there is following drawback：
On the one hand, the maintenance power box position set by standing is limited and fixes, and fails all places in covering station, to use
Case interior power is generally required to be drawn using the cable of long range and connect, and is made troubles to site operation.Especially become when job site is located at
During the remote locations such as power station roof, enclosure wall, draw connect power supply will be very difficult.
On the other hand, the external unit in charge of construction's use and maintenance power safety accident experience of transformer station that history occurs is used for reference, studied carefully
Its reason is to draw the long-distance cable and transformer inlet wire hypotelorism that connect maintenance power supply, produces induced voltage and causes cable to be put
Electricity.This illustrates that draw the long-distance cable for connecing maintenance power supply easily produces induced voltage with other charging equipments, produces security risk；Separately
Outside, the towing of cable, winding, damage in insulation may also can bring the person of job site, equipment safety risk etc..
Finally, in the old-fashioned maintenance power box in part there is insulation damages, the risk of creepage protection function failure in switch, once
Short trouble occurs for job site, switch or even station electricity consumption service entrance switch will be caused in case to bypass the immediate leadership the situation of tripping operation so that use of standing
Goddess of lightning's line faces the risk of decompression.
Utility model content
Technical problem to be solved in the utility model be there is provided it is a kind of it is simple in construction, draw and connect flexible, reliable
Overhaul power output apparatus.
In order to solve the above-mentioned technical problem, the utility model provides a kind of maintenance power output apparatus, including：
Power supply circuit, for providing 12V DC voltages as initial voltage；
Push-pull type booster circuit, the 12V DC voltage conversions for power supply circuit to be exported are 110V DC voltages and defeated
Go out；
Boost chopper, the 110V DC voltage conversions for push-pull type booster circuit to be exported are 345V direct currents
Pressure；
Inverter circuit, for will be boosted by boost chopper after 345V DC voltage conversions for 380V alternating voltages simultaneously
Output.
Wherein, the power supply circuit includes two groups of lithium iron phosphate storage batteries in parallel, and every group is 3V's by 4 section rated voltages
Lithium iron phosphate storage battery is in series.
Wherein, the power supply circuit tandem 100A fuses, for being fused when output current exceeds 100A to protect
Protect battery.
Wherein, the 12V DC voltages, which are drawn, is connected to the output of KM1 contactors.
Wherein, the push-pull type booster circuit includes：
Push-pull type boost conversion circuit, it further comprises that switching component metal-oxide-semiconductor, high frequency transformer and the first PWM are adjusted
Circuit processed, metal-oxide-semiconductor Q1, Q2 grid is connected with the first PWM circuit, the primary of drain electrode respectively with high frequency transformer
Winding is connected, and the push-pull type boost conversion circuit is used in different periods replace by described switching component metal-oxide-semiconductor Q1, Q2
From metal-oxide-semiconductor Q1 conductings, metal-oxide-semiconductor Q2 cut-offs, it is turned off, to metal-oxide-semiconductor Q1 cut-offs, metal-oxide-semiconductor Q2 conductings, then arrives to metal-oxide-semiconductor Q1, Q2
Metal-oxide-semiconductor Q1, Q2 are turned off, and the 12V DC voltage conversions that the power supply circuit is exported are high frequency square wave alternating voltage；
Single phase full bridge controlled rectifier, for being 110V direct currents rectangular wave electricity by the high frequency square wave ac voltage rectifier
Pressure.
Wherein, the push-pull type booster circuit also includes：
The LC uptake pathways that inductance is constituted with electric capacity, to suppress metal-oxide-semiconductor collector voltage spike, and pass through the electric capacity
Export the 110V direct currents square wave voltage.
Wherein, the 110V DC voltages, which are drawn, is connected to the output of KM2 contactless contactors.
Wherein, the boost chopper includes inductance, metal-oxide-semiconductor, diode and capacitor, and the drain electrode of the metal-oxide-semiconductor connects
Between the positive pole for being connected on the inductance and the diode, the capacitor is connected to the source electrode of the metal-oxide-semiconductor and two pole
Between the negative pole of pipe.
Wherein, the inverter circuit includes：
Three-phase voltage type inverter circuit, it further comprises IGBT pipes, diode and the second PWM circuit, for inciting somebody to action
The 345V dc voltage boosts inversion of boost chopper output is drawn to 380V alternating voltages and is connected to isolating transformer,
Diode Q5 forward directions are connected between IGBT pipes BG1 emitter and collector, and diode Q6 forward directions are connected to IGBT pipes BG2
Emitter and collector between, diode Q7 forward directions are connected between IGBT pipes BG3 emitter and collector, diode Q8
Forward direction is connected between IGBT pipes BG4 emitter and collector, and diode Q9 forward directions are connected to IGBT pipes BG5 emitter stage
Between colelctor electrode, diode Q10 forward directions are connected between IGBT pipes BG6 emitter and collector, IGBT pipes BG1-BG6's
Gate pole is connected to the second PWM circuit, isolating transformer T2 three-phase be connected to IGBT pipe BG1 emitter stages with
Between IGBT pipes BG2 colelctor electrode, between IGBT pipe BG3 emitter stages and IGBT pipes BG4 colelctor electrode, IGBT pipe BG5 emitter stages
Between IGBT pipes BG6 colelctor electrode.
Wherein, the inverter circuit also includes：
Isolating transformer, KM3 switch outputs are connected to for the 380V alternating voltages to be drawn by output switch 3ZK.
The beneficial effect of the utility model embodiment is：
The utility model can provide DC12V, DC110V, AC380V totally 3 kinds of voltage class as output, can meet 90% with
Upper construction of transformer substation load needs, and flexible using safety；
The utility model avoids the link of long range jump lead, shortens the on-stream time of construction operation：At present due to
Temporary source access regulation is required in transformer station, and the access of temporary source must fulfil switching characteristic test, administrative staff's label
The formalities such as word, it is ensured that also extend the on-stream time of construction operation while safety work, and the use of the present apparatus, draw removing from
The link of cable is connect, so that the curtailment of operation, improves operating efficiency；In addition also avoid causes station because maintenance power supply draws to connect
Electricity consumption is bypassed the immediate leadership the risk of tripping operation；
The utility model is wheeled apparatus, so can be placed with job location, no matter job location is located at eminence
The corner such as master control building roof or transformer station's enclosure wall, gate, device can be used to power, flexibly convenient；
Device loop of the present utility model is simple, and device is light to be easy to carry about with one, and device fault rate is low, operational reliability compared with
Height, the strong supplement that can be powered as transformer station's internally-fixed service chamber, overcomes the weakness of traditional approach, improves construction existing
The level of security of field, has ensured the reliability service of station power supply；
The utility model, which also may extend to normal domestic power industry, need to use the occasion of above portable power source,
Have a wide range of applications and promotional value.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of structured flowchart for overhauling power output apparatus of the utility model embodiment.
Fig. 2 is the concrete structure schematic diagram of power supply circuit in the utility model embodiment.
Fig. 3 is the concrete structure schematic diagram of push-pull type booster circuit in the utility model embodiment.
Fig. 4 is the concrete structure schematic diagram of boost chopper in the utility model embodiment.
Fig. 5 is the concrete structure schematic diagram of inverter circuit in the utility model embodiment.
Fig. 6 is a kind of concrete structure schematic diagram for overhauling power output apparatus of the utility model embodiment.
Embodiment
The explanation of following embodiment is refer to the attached drawing, can be to the particular implementation implemented to example the utility model
Example.
It refer to shown in Fig. 1, the utility model embodiment provides a kind of maintenance power output apparatus, including：
Power supply circuit, for providing 12V DC voltages as initial voltage；
Push-pull type booster circuit, the 12V DC voltage conversions for power supply circuit to be exported are 110V DC voltages and defeated
Go out；
Boost chopper, the 110V DC voltage conversions for push-pull type booster circuit to be exported are 345V direct currents
Pressure；
Inverter circuit, for will be boosted by boost chopper after 345V DC voltage conversions for 380V alternating voltages simultaneously
Output.
I.e. there is provided 3 kinds of output voltages including 3 voltage conversion circuits for the present embodiment maintenance power output apparatus.By powering
Circuit provides DC12V voltages as initial voltage (the first output voltage), due in Substation Station power load now, portion big absolutely
Point DC load voltage class is that DC110V, AC load are AC380V, thus push-pull type booster circuit using export DC110V as
Second output voltage, to supply PWM circuit power in most DC loads and all loops of the present apparatus.Boost chopper
110V DC voltage conversions are 345V DC voltages by circuit, as the input of inverter circuit, and inverter circuit is by 345V direct currents
Buckling is changed to 380V alternating voltages, as the 3rd output voltage, to meet the demand of most AC loads.
It refer to shown in Fig. 2, specifically, to ensure reliability, power supply circuit includes two groups of LiFePO4 electric power storages in parallel
Pond, every group is in series by 4 section lithium iron phosphate storage batteries.It is 100 ampere-hours (Ah), rated voltage per batteries monomer rated capacity
For DC 3V, output DC 12V voltages can be stablized by manual output switch 1ZK after series connection.Lithium iron phosphate storage battery group and tradition
Lead-acid accumulator is compared, and energy ratio is 4-5 times of the latter, with small volume, lightweight advantage；Batteries tandem
100A fuse R1-R4, when output current exceeds 100A, fuse blows are to protect batteries；DC 12V voltages are drawn
KM1 contactors are connected to, the first output voltage (DC 12V) can be obtained.
The DC12V exported by power supply circuit as the control source of this circuit, is completed DC12V by push-pull type booster circuit
To DC110V conversion.Push-pull type booster circuit in the present embodiment is as shown in figure 3, switching component metal-oxide-semiconductor Q1, Q2, high frequency
Transformer T1 and PWM circuit composition push-pull type boost conversion circuit, metal-oxide-semiconductor Q1, Q2 grid are electric with the first PWM
Road is connected, and the armature winding respectively with high frequency transformer T1 that drains is connected, and push-pull type boost conversion circuit passes through switching component
Metal-oxide-semiconductor Q1, Q2 alternating shut-off, high frequency square wave alternating voltage is transformed to by input voltage DC12V.Diode D1-D4 forms list
Phase bridge-type all controlled rectifier circuit, is direct current square wave voltage DC110V by high frequency square wave ac voltage rectifier.L1 and C6 constitutes LC
Uptake pathway, to suppress metal-oxide-semiconductor collector voltage spike.High frequency square wave voltage DC110V is exported by C6, by DC110V
Voltage, which draws, is connected to KM2 contactless contactors, can obtain the second output voltage.
The principle of this circuit is：
(1) as 0≤t≤t1, Q1 conductings, Q2 cut-offs have：
U3=N2/N1×U (2)
Wherein, N2 is the W2 number of turn.
(2) as t1≤t≤t2, Q1, Q2 cut-offs.
(3) as t2≤t≤t3, Q1 cut-offs, Q2 conductings have：
Therefore U3=-N2/N1×U
(4) as t3≤t≤t4, Q1, Q2 cut-offs.
Therefore, output voltage U3It is the ac square wave that amplitude is, the high frequency square wave voltage that amplitude is is obtained after full-bridge rectification.
By adjusting power switch Q1, Q2 dutycycle, the regulation of output voltage virtual value is reached.
It refer to shown in Fig. 4, boost chopper includes inductance L2, metal-oxide-semiconductor V3, diode D1, capacitor C7, jointly
Step-up DC/DC converters are constituted, DC110V is boosted into about DC345V.
Its circuit theory is：
When metal-oxide-semiconductor V3 is turned on, input voltage UiIt is added on inductance L2, inductance L2 is by input voltage UiExcitation, during conducting,
Magnetic flux incrementss are；When switching off, due to continuous current mode, diode is changed into conducting state, voltage (Uo-Ui) with switching
It is added in the opposite direction on inductance L2 during conducting, inductance L2 demagnetizations, magnetic flux decrement is during switching off.During stable state, electricity
The magnetic flux incrementss of sense are equal with decrement, then the voltage change ratio of boost converter is less than 1.Because no-load voltage ratio is less than 1, thus it is defeated
Go out voltage and be always higher than input voltage, as booster converter.
Wherein,
Therefore can be by adjusting ton+toffWith toffRatio adjust output voltage Uo。
, can will be original defeated in boost chopper in order to accurately obtain the output of follow-up inverter circuit AC 380V amplitudes
Enter voltage DC110V and boost to DC345V using the input as follow-up inverter circuit.
Referring again to shown in Fig. 5, electricity of the DC345V voltages that inverter circuit exports boost chopper as this circuit
Pressure input.IGBT pipes BG1-BG6, diode Q5-Q10 and PWM circuit composition three-phase voltage type inversion circuit, jointly will
DC345V boosts inversion to AC380V, draws and is connected to isolating transformer T2.Specifically, diode Q5 forward directions are connected to IGBT pipes BG1
Emitter and collector between, diode Q6 forward directions are connected between IGBT pipes BG2 emitter and collector, diode Q7
Forward direction is connected between IGBT pipes BG3 emitter and collector, diode Q8 forward directions be connected to IGBT pipes BG4 emitter stage and
Between colelctor electrode, diode Q9 forward directions are connected between IGBT pipes BG5 emitter and collector, diode Q10 forward direction connections
Between IGBT pipes BG6 emitter and collector, IGBT pipes BG1-BG6 gate pole is connected to the second PWM electricity
Road, isolating transformer T2 three-phase is connected between IGBT pipe BG1 emitter stages and IGBT pipes BG2 colelctor electrode, IGBT pipes
Between BG3 emitter stages and IGBT pipes BG4 colelctor electrode, between IGBT pipe BG5 emitter stages and IGBT pipes BG6 colelctor electrode.Isolation
Transformer T2 output voltages AC380V is drawn by output switch 3ZK is connected to KM3 switches, can obtain the 3rd output voltage.
By described above, implement the utility model embodiment, have the advantages that：
The utility model can provide DC12V, DC110V, AC380V totally 3 kinds of voltage class as output, can meet 90% with
Upper construction of transformer substation load needs, and flexible using safety；
The utility model avoids the link of long range jump lead, shortens the on-stream time of construction operation：At present due to
Temporary source access regulation is required in transformer station, and the access of temporary source must fulfil switching characteristic test, administrative staff's label
The formalities such as word, it is ensured that also extend the on-stream time of construction operation while safety work, and the use of the present apparatus, draw removing from
The link of cable is connect, so that the curtailment of operation, improves operating efficiency；In addition also avoid causes station because maintenance power supply draws to connect
Electricity consumption is bypassed the immediate leadership the risk of tripping operation；
The utility model is wheeled apparatus, so can be placed with job location, no matter job location is located at eminence
The corner such as master control building roof or transformer station's enclosure wall, gate, device can be used to power, flexibly convenient；
Device loop of the present utility model is simple, and device is light to be easy to carry about with one, and device fault rate is low, operational reliability compared with
Height, the strong supplement that can be powered as transformer station's internally-fixed service chamber, overcomes the weakness of traditional approach, improves construction existing
The level of security of field, has ensured the reliability service of station power supply；
The utility model, which also may extend to normal domestic power industry, need to use the occasion of above portable power source,
Have a wide range of applications and promotional value.
Above disclosed is only the utility model preferred embodiment, can not limit the utility model with this certainly
Interest field, therefore equivalent variations made according to the utility model claim still belong to the scope that the utility model is covered.
Claims (8)
1. one kind maintenance power output apparatus, it is characterised in that including：
Power supply circuit, for providing 12V DC voltages as initial voltage；
Push-pull type booster circuit, the 12V DC voltage conversions for power supply circuit to be exported are 110V DC voltages and exported；
Boost chopper, the 110V DC voltage conversions for push-pull type booster circuit to be exported are 345V DC voltages；
Inverter circuit, for will be boosted by boost chopper after 345V DC voltage conversions be 380V alternating voltages and defeated
Go out.
2. maintenance power output apparatus according to claim 1, it is characterised in that the power supply circuit includes in parallel two
Group lithium iron phosphate storage battery, every group is in series by 4 section rated voltages for 3V lithium iron phosphate storage battery.
3. maintenance power output apparatus according to claim 2, it is characterised in that the power supply circuit tandem 100A
Fuse（R1-R4）, for being fused when output current exceeds 100A to protect battery.
4. maintenance power output apparatus according to claim 2, it is characterised in that the 12V DC voltages, which are drawn, to be connected to
KM1 contactors are exported.
5. maintenance power output apparatus according to claim 1, it is characterised in that the push-pull type booster circuit includes：
Push-pull type boost conversion circuit, it further comprises the first metal-oxide-semiconductor（Q1）, the second metal-oxide-semiconductor（Q2）, high frequency transformer（T1）
And the first PWM circuit, first metal-oxide-semiconductor（Q1）With second metal-oxide-semiconductor（Q2）Grid with the first PWM adjust
Circuit processed be connected, drain electrode respectively with high frequency transformer（T1）Armature winding be connected, the push-pull type boost conversion circuit is used for
Pass through first metal-oxide-semiconductor（Q1）With second metal-oxide-semiconductor（Q2）In different periods alternately from first metal-oxide-semiconductor（Q1）Lead
Logical, second metal-oxide-semiconductor（Q2）Cut-off, to first metal-oxide-semiconductor（Q1）With second metal-oxide-semiconductor（Q2）It is turned off, to described
First metal-oxide-semiconductor（Q1）Cut-off, second metal-oxide-semiconductor（Q2）Conducting, then to first metal-oxide-semiconductor（Q1）With second metal-oxide-semiconductor
（Q2）It is turned off, the 12V DC voltage conversions that the power supply circuit is exported are high frequency square wave alternating voltage；
Single phase full bridge controlled rectifier, for being 110V direct current square wave voltages by the high frequency square wave ac voltage rectifier.
6. maintenance power output apparatus according to claim 5, it is characterised in that the push-pull type booster circuit is also wrapped
Include：
Inductance（L1）With electric capacity（C6）The LC uptake pathways of composition, to suppress metal-oxide-semiconductor collector voltage spike, and by described
Electric capacity（C6）Export the 110V direct currents square wave voltage.
7. maintenance power output apparatus according to claim 1, it is characterised in that the boost chopper includes inductance
（L2）, metal-oxide-semiconductor（V3）, diode（D1）And capacitor（C7）, the metal-oxide-semiconductor（V3）Drain electrode be connected to the inductance（L2）With
The diode（D1）Positive pole between, the capacitor（C7）It is connected to the source electrode and the diode of the metal-oxide-semiconductor（D1）
Negative pole between.
8. maintenance power output apparatus according to claim 1, it is characterised in that the inverter circuit includes：
Three-phase voltage type inverter circuit, it further comprises six IGBT pipes, six diodes and the second PWM circuit, used
In the 345V dc voltage boosts inversion for exporting the boost chopper to 380V alternating voltages, and draw and be connected to isolation transformation
Device（T2）, the first diode（Q5）Forward direction is connected to the first IGBT pipes（BG1）Emitter and collector between, the second diode
（Q6）Forward direction is connected to the 2nd IGBT pipes（BG2）Emitter and collector between, the 3rd diode（Q7）Forward direction is connected to
Three IGBT are managed（BG3）Emitter and collector between, the 4th diode（Q8）Forward direction is connected to the 4th IGBT pipes（BG4）Hair
Between emitter-base bandgap grading and colelctor electrode, the 5th diode（Q9）Forward direction is connected to the 5th IGBT pipes（BG5）Emitter and collector between,
6th diode（Q10）Forward direction is connected to the 6th IGBT pipes（BG6）Emitter and collector between, the gate pole of six IGBT pipes
It is connected to the second PWM circuit, isolating transformer（T2）Three-phase be connected to the first IGBT pipe（BG1）Transmitting
Managed with the 2nd IGBT pole（BG2）Colelctor electrode between, the 3rd IGBT pipe（BG3）Emitter stage and the 4th IGBT are managed（BG4）Current collection
Between pole, the 5th IGBT pipe（BG5）Emitter stage and the 6th IGBT are managed（BG6）Colelctor electrode between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621313363.1U CN206461533U (en) | 2016-12-02 | 2016-12-02 | One kind maintenance power output apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621313363.1U CN206461533U (en) | 2016-12-02 | 2016-12-02 | One kind maintenance power output apparatus |
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| Publication Number | Publication Date |
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| CN206461533U true CN206461533U (en) | 2017-09-01 |
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ID=59692556
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787898A (en) * | 2016-12-02 | 2017-05-31 | 深圳供电局有限公司 | One kind maintenance power output apparatus |
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2016
- 2016-12-02 CN CN201621313363.1U patent/CN206461533U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787898A (en) * | 2016-12-02 | 2017-05-31 | 深圳供电局有限公司 | One kind maintenance power output apparatus |
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