CN207339662U - One kind is used for highway power supply and distribution source power cabinet - Google Patents
One kind is used for highway power supply and distribution source power cabinet Download PDFInfo
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- CN207339662U CN207339662U CN201721458163.XU CN201721458163U CN207339662U CN 207339662 U CN207339662 U CN 207339662U CN 201721458163 U CN201721458163 U CN 201721458163U CN 207339662 U CN207339662 U CN 207339662U
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Abstract
The utility model discloses one kind to be used for highway power supply and distribution source power cabinet, belong to technical field of electric power, including major loop, hand over commutation inversion module U1, the adjustable transformer T1 of orthogonal and export transformer T4, solves the technical problem completed voltage with less loss and adjusted, the utility model substantially reduces the caloric value of source power cabinet, improves the efficiency of transmission of source power cabinet.
Description
Technical field
The utility model belongs to technical field of electric power, more particularly to a kind of to be used for highway power supply and distribution source power cabinet.
Background technology
Source power cabinet is remote power system important component, and power source generator is certain according to output is previously set
Voltage, when load current changes, according to load current feedback, adjusts step-up transformer output, voltage is met load
Need.Power source generator can adjust output voltage in time according to the change of output load current in system, make output voltage range
For (0.2kV-1kV), while the terminal intelligent power supply conversion cabinet of load-side, itself it can be adjusted defeated according to the difference of input voltage
Go out voltage, ensure output voltage stabilization in the range of 220V, whole highway low-voltage distribution system can give to load along road and provide
Stable control source.
Current source power cabinet mode is mainly the commutation inversion module that three-phase input accesses a cross-straight-intersection, in real time
Output voltage and output power to loaded line carry out data acquisition, then by the controller on source power cabinet, use Fu
In the electric power electric parameter collecting method such as leaf algorithm or real effective algorithm, calculate current real time data, according to control fill
The impedance parameter of the whole supply line set in putting, the comprehensive integration objective magnitude of voltage loaded along road, by commutation inversion mould
The pwm pulse of block is adjusted, and realizes the intelligent power supply function to required supply line.
Current source power cabinet gives the power that the load that is followed by is supplied, commutation inversion module that will be Jing Guo cross-straight-intersection
Rectification and inverter operation, due to commutation inversion module generally using PWM adjust, the switching frequency of IGBT module used is larger,
Cause the energy consumption of whole module larger, fever is serious, under normal circumstances, the transimission power of source power cabinet for 85%-90% it
Between, cause larger waste, by taking a 20KW source power cabinet as an example, calculated by transimission power 90%, 1 electric degree lost when small
Number is as follows：
W=P × T × N=20 × 1 × 0.1=2 degree；
P is transimission power, and N is efficiency of transmission, and T is chronomere, and in hours, W is loss electric degree；It is meanwhile larger
Caloric value also have impact on the design of cabinet, it is necessary to install cooling measure of relatively high power etc. additional, reduce further transimission power, together
When improve the design and manufacture difficulty of cabinet.
Utility model content
The purpose of this utility model is to provide one kind and is used for highway power supply and distribution source power cabinet, solves with less
The technical problem that voltage is adjusted is completed in loss.
To achieve the above object, the utility model uses following technical scheme：
One kind is used for highway power supply and distribution source power cabinet, including the commutation inversion module U1 of major loop, cross-straight-intersection,
Adjustable transformer T1 and output transformer T4；Major loop includes input circuit and output loop, input circuit connection cross-straight-intersection
Commutation inversion module U1 input terminal, the one of the output terminal connection adjustable transformer T1 of the commutation inversion module U1 of cross-straight-intersection
Secondary winding, the secondary windings in series of adjustable transformer T1 access the output loop, and output transformer T4 is connected to the output
In circuit.
The input circuit connection 380V alternating currents or 220V alternating currents of the major loop.
The input voltage of the adjustable transformer is set as V, voltage regulation result A, then Vtune parameter X, X=V × A；
The primary voltage of adjustable transformer and the ratio of secondary voltage are：V:A, i.e. the first winding and secondary winding of adjustable transformer
Ratio be V:A.
The voltage regulation result is a percentage specific ray constant.
One kind described in the utility model is used for highway power supply and distribution source power cabinet, solves and has been lost with less
The technical problem adjusted into voltage, the utility model substantially reduce the caloric value of source power cabinet, improve source power cabinet
Efficiency of transmission.
Brief description of the drawings
Fig. 1 is the schematic diagram of the utility model.
Embodiment
One kind as shown in Figure 1 is used for highway power supply and distribution source power cabinet, includes the rectification of major loop, cross-straight-intersection
Inverter module U1, adjustable transformer T1 and output transformer T4；Major loop includes input circuit and output loop, and input circuit connects
The input terminal of the commutation inversion module U1 of cross-straight-intersection is connect, the output terminal connection pressure regulation of the commutation inversion module U1 of cross-straight-intersection becomes
The first winding of depressor T1, the secondary windings in series of adjustable transformer T1 access the output loop, export transformer T4 connections
In the output loop.
The input circuit connection 380V alternating currents or 220V alternating currents of the major loop.
The input voltage of the adjustable transformer is set as V, voltage regulation result A, then Vtune parameter X, X=V × A；
The primary voltage of adjustable transformer and the ratio of secondary voltage are：V:A, i.e. the first winding and secondary winding of adjustable transformer
Ratio be V:A.
The voltage regulation result is a percentage specific ray constant.
In use, it is necessary to adjust voltage range as ± 15% by taking the source power cabinet of a 20KVA as an example, major loop
Input voltage can be 380V, which may float or unstable, and output needs to realize on the basis of input voltage
15% voltage regulation result：380 × 0.15=57；The voltage of series voltage-regulating transformer is than the magnitude of voltage and needs according to input power
The voltage regulation result of realization configures, and a secondary voltage no-load voltage ratio of series transformer is：380V:57V；Source cabinet controller (institute
It is the prior art to state source cabinet controller, therefore is not described in detail) output voltage to loaded line and output power carry out in real time
Data acquisition；Use Fourier algorithm tracking input terminal real-time voltage value Uin, real-time output valve Uout1, real-time output current value
Iout, output power Pout is calculated by real effective algorithm；Setting needs the voltage-target Uout2 exported；Pass through contrast
The magnitude of voltage and voltage-target exported at present, obtains needing regulation voltage level Δ U=Uout1-Uout2；Pass through deviation voltage Δ
U, carries out output control, controlled quentity controlled variable has pid algorithm to draw to the commutation inversion module U1 of cross-straight-intersection；To commutation inversion module
Pwm pulse output is adjusted；Reach and adjust the effect that output voltage is adjusted；The control phase angle of commutation inversion module U1 need to be to defeated
The phase angle for entering voltage is obtained into horizontal lock.
Since the transmission electric current of major loop is equal to the current value of the series loop of adjustable transformer secondary winding；So pressure regulation
The maximum transmission power of change into：
Pt=I1 × Ut2=m × 1 × Uin=m of I × Pin；
Wherein：Pt is the transmission power value of series transformer；I1 is whole source power cabinet transmission current value；M is source
The maximum Vtune parameter of power cabinet, the value upper limit of m is 15%；Uin is source power cabinet input voltage；Pin is source power supply
The input power of cabinet；
Equally, commutation inversion module U1 is generally adjusted using PWM, series voltage-regulating module is calculated with 90% power
Loss.
Calculated by transimission power 90%, it is assumed that it is 10% to adjust ratio in average voltage, then module energy loss is：
W=m × Pin × T × N=0.15 × 20 × 1 × 0.1=0.3 degree；
Wherein：Pin is transimission power, and N is efficiency of transmission, and T is chronomere, and in hours, W is loss electric degree；
As it can be seen that the energy loss of commutation inversion module U1 compares, background technology reduces 85%.
Due to greatly reducing for loss, cause voltage regulating module power to substantially reduce, reduce production and manufacture cost, source
Power cabinet fever can greatly reduce, and reduce ageing equipment, extend the service life.
One kind described in the utility model is used for highway power supply and distribution source power cabinet, solves and has been lost with less
The technical problem adjusted into voltage, the utility model substantially reduce the caloric value of source power cabinet, the transmission effect of source power cabinet
Rate reaches more than 95%.
Claims (4)
1. one kind is used for highway power supply and distribution source power cabinet, it is characterised in that：Rectification including major loop, cross-straight-intersection is inverse
Become module U1, adjustable transformer T1 and output transformer T4；Major loop includes input circuit and output loop, input circuit connection
The input terminal of the commutation inversion module U1 of cross-straight-intersection, the output terminal connection pressure regulation transformation of the commutation inversion module U1 of cross-straight-intersection
The first winding of device T1, the secondary windings in series of adjustable transformer T1 access the output loop, and output transformer T4 is connected to
In the output loop.
2. one kind as claimed in claim 1 is used for highway power supply and distribution source power cabinet, it is characterised in that:The major loop
Input circuit connection 380V alternating currents or 220V alternating currents.
3. one kind as claimed in claim 1 is used for highway power supply and distribution source power cabinet, it is characterised in that:Set the tune
The input voltage of pressure transformer is V, voltage regulation result A, then Vtune parameter X, X=V × A；The once electricity of adjustable transformer
Pressure and the ratio of secondary voltage are：V:A, i.e. the first winding of adjustable transformer and the ratio of secondary winding are V:A.
4. one kind as claimed in claim 3 is used for highway power supply and distribution source power cabinet, it is characterised in that:The pressure regulation effect
Fruit is a percentage specific ray constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721458163.XU CN207339662U (en) | 2017-11-06 | 2017-11-06 | One kind is used for highway power supply and distribution source power cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721458163.XU CN207339662U (en) | 2017-11-06 | 2017-11-06 | One kind is used for highway power supply and distribution source power cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207339662U true CN207339662U (en) | 2018-05-08 |
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ID=62364221
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721458163.XU Active CN207339662U (en) | 2017-11-06 | 2017-11-06 | One kind is used for highway power supply and distribution source power cabinet |
Country Status (1)
| Country | Link |
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| CN (1) | CN207339662U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107707129A (en) * | 2017-11-06 | 2018-02-16 | 南京力通达电气技术有限公司 | One kind is used for highway for matching somebody with somebody power end power cabinet |
-
2017
- 2017-11-06 CN CN201721458163.XU patent/CN207339662U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107707129A (en) * | 2017-11-06 | 2018-02-16 | 南京力通达电气技术有限公司 | One kind is used for highway for matching somebody with somebody power end power cabinet |
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