CN104901254A - Portable DC ice melting power supply device for distribution line - Google Patents
Portable DC ice melting power supply device for distribution line Download PDFInfo
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- CN104901254A CN104901254A CN201510315031.0A CN201510315031A CN104901254A CN 104901254 A CN104901254 A CN 104901254A CN 201510315031 A CN201510315031 A CN 201510315031A CN 104901254 A CN104901254 A CN 104901254A
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- power supply
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/16—Devices for removing snow or ice from lines or cables
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Abstract
The invention relates to a portable DC ice melting power supply device for a distribution line, which comprises a gasoline generator, a three-phase full-wave rectifier, a filtering circuit, a switching power supply, a voltage and current detecting circuit, a DC output voltage end, a controlling and protecting circuit and an auxiliary power supply. The switching power supply comprises a commutating capacitor, an overvoltage protector, an insulated gate bipolar transistor, an intermediate-frequency transformer and a rectifier device. According to the portable DC ice melting power supply device, an intermediate-frequency gasoline generator is assembled with the switching power supply; the insulated gate bipolar transistor with a switching frequency of 20-30kHz is adopted so that the weight of the portable DC ice melting power supply device for the distribution line is reduced to less than 90kg, and the volume is reduced to less than 1.1*0.4*0.5m<3>. The bottom of the portable DC ice melting power supply device is provided with rollers. The portable DC ice melting power supply device is suitable for carrying and transportation by two persons in a mountainous area, and furthermore can be conveniently and manually carried to an area which is inconvenient in transportation for performing ice melting on the distribution network, thereby improving safe operation level of the distribution network.
Description
Technical field
The present invention relates to a kind of electric power transmission field, especially DC power supply ice-melt method of supplying power and device.Ice-melt process is carried out when being mainly used in existing distribution line icing.
Background technology
The area such as Guangxi, Guizhou, Hunan of south China, transmission line easily suffers icing disaster in the winter time, causes power outage on a large scale.In icing disaster, wherein distribution line, due to widely distributed, majority is in mima type microrelief region, more subjects to the impact of freezing disaster.Such as, the southern area of China ice damage of 2008, a large amount of distribution transmission line circuits falls bar, broken string, accumulatively bar occurs exceedes hundreds thousand of base, and broken string more than 30 ten thousand places, cause a large number of users power failure thus, are difficult to recover in the short time.After 2008, fixed deicing device and DC ice melting car are at electrical network district development deployment, powerful technical guarantee is provided to the anti-ice ice-melt work of 110kV and above major network circuit, but these devices are only ac-dc conversion devices, special AC power must be provided by transformer station.But the work of extremely frigid zones distribution line anti-icing anti-ice rests on based on the level of artificial deicing for a long time always, there are technical measures to fall behind, labor productivity is low, field work safe risk height waits series of problems, in the urgent need to developing a kind of portable power distribution line direct-current ice-melting supply unit, so that the ice-melt demand of distribution line is implemented in the area meeting poor transport.
Summary of the invention
The defect of distribution ice-melt requirement can not be adapted to for prior art, there is provided a kind of lightweight, bottom is furnished with pulley, is applicable to two people and carries transport in intermountain, and the portable power distribution line direct-current ice-melting supply unit of the ice-melt of distribution line is implemented in the area being convenient to manually be carried into poor transport.
Patent of the present invention is the technical scheme solving the problems of the technologies described above employing:
A kind of portable power distribution line direct-current ice-melting supply unit, is characterized in that: device comprises gasoline engine generator, three-phase full wave rectifier circuit, filter circuit, Switching Power Supply, voltage and current detection circuit, VD end, controls and protective circuit and accessory power supply; Described gasoline engine generator comprises main winding and auxiliary winding, the main winding output of gasoline engine generator connects the input of three-phase full wave rectifier circuit, the output of three-phase full wave rectifier circuit connects the input of filter circuit, the input of the output connecting valve power supply of filter circuit, the output of Switching Power Supply connects the input of voltage and current detection circuit, and the output of voltage and current detection circuit connects VD end; The auxiliary winding output of gasoline engine generator connects the input of accessory power supply; the output connection control of accessory power supply and the power end of protective circuit; the output of control and protective circuit is connected with Switching Power Supply, and the output of control and protective circuit is also connected with voltage and current detection circuit.
Described Switching Power Supply comprises commutating capacitor, overvoltage protection device, insulated gate bipolar transistor, intermediate frequency transformer and rectifying device; The output of described filter circuit connects the input of commutating capacitor; the output of commutating capacitor connects the input of overvoltage protection device; the output of overvoltage protection device connects the input of insulated gate bipolar transistor; the output of insulated gate bipolar transistor connects the input of intermediate frequency transformer, and the output of intermediate frequency transformer connects the input of rectifying device.
Described control and protective circuit comprise changes PCB, feedback of voltage and current device and overheat protector; The described output changing PCB connects the input changing feedback of voltage and current device; the output of feedback of voltage and current device connects the input of voltage and current detection circuit; PCB is connected with overheat protector; PCB is connected with accessory power supply, and grid, the emitter of PCB and the insulated gate bipolar transistor of described Switching Power Supply are connected.
Described commutating capacitor comprises Change phase capacitance C1, Change phase capacitance C2; Described overvoltage protection device comprises piezo-resistance RY1, electric capacity C3, resistance R1, electric capacity C4, resistance R2; Described insulated gate bipolar transistor comprises insulated gate bipolar transistor V1, insulated gate bipolar transistor V2; Described intermediate frequency transformer is the centre tapped intermediate frequency transformer T1 of band; Described rectifying device comprises diode D1, diode D2, reactor L1 and filter capacitor LB1; Described Change phase capacitance C1 connects with Change phase capacitance C2, and the other end of Change phase capacitance C1 is connected with positive source, and the other end of Change phase capacitance C2 is connected with power cathode; Electric capacity C3, resistance R1, electric capacity C4, resistance R2 connect, and the other end of electric capacity C3 is connected with positive source, and the other end of resistance R2 is connected with power cathode; Insulated gate bipolar transistor V1 connects with insulated gate bipolar transistor V2, and the other end of insulated gate bipolar transistor V1 is connected with positive source, and the other end of insulated gate bipolar transistor V2 is connected with power cathode; Piezo-resistance RY1 one end is connected with positive source, and the piezo-resistance RY1 other end is connected with power cathode.Tie point w is provided with between Change phase capacitance C1 and Change phase capacitance C2, resistance R1, tie point y is provided with between electric capacity C4, tie point x is provided with between insulated gate bipolar transistor V1 and insulated gate bipolar transistor V2, tie point w is connected with one end of transformer T1 primary coil, tie point x, y is connected with the other end of transformer T1 primary coil, diode D1, be connected with one end of reactor L1 after the negative polarity end parallel connection of diode D2, diode D1, the positive ends of diode D2 is connected with the two ends of transformer T1 secondary coil respectively, one end of filter capacitor LB1 is connected to the center tap terminal of transformer T1 secondary coil, form the negative polarity end that direct current exports, the other end of filter capacitor LB1 and the other end of reactor L1 connect and compose the positive ends that direct current exports, grid, the emitter of insulated gate bipolar transistor V1 are connected with PCB, and grid, the emitter of insulated gate bipolar transistor V2 are connected with PCB.
Described insulated gate bipolar transistor switching frequency (11) is 20 ~ 30kHz.
Bottom of device is provided with pulley.
Beneficial effect of the present invention:
Switching Power Supply of the present invention by commutating capacitor, overvoltage protection device, insulated gate bipolar transistor (IGBT), be with centre tapped intermediate frequency transformer, two groups of single-phase rectifier devices form; make portable power distribution line direct-current ice-melting supply unit outputting current steadily, controllability can wait feature by force, different cross section distribution line ice-melt demand can be met.Intermediate-frequengasoline gasoline generator and Switching Power Supply are fitted together, make portable power distribution line direct-current ice-melting supply unit weight reduce to below 90kg, volume reduces to 1.1X0.4X0.5m
3below.Adopt switching frequency to be 20 ~ 30kHz insulated gate bipolar transistor (IGBT), make the transformer of inversion commutating circuit, filter volume and weight reduces greatly.Bottom of device is furnished with pulley, is applicable to two people and carries transport in intermountain, and the ice-melt of distribution line is implemented, to improve distribution line safety operation level in the area being convenient to manually be carried into poor transport.
Accompanying drawing explanation
Fig. 1 is the structural representation of Portable DC ice-melt supply unit of the present invention;
Fig. 2 is the structural representation of Switching Power Supply of the present invention;
Fig. 3 is the structural representation of control of the present invention and protective circuit;
Fig. 4 is the schematic diagram of Switching Power Supply.
In figure, gasoline engine generator 1, three-phase full wave rectifier circuit 2; filter circuit 3, Switching Power Supply 4, voltage and current measurement device 5; VD end 6, controls and protective circuit 7, accessory power supply 8; commutating capacitor 9, overvoltage protection device 10, insulated gate bipolar transistor 11; intermediate frequency transformer 12, rectifying device 13, PCB 14; feedback of voltage and current device 15, overheat protector 16.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention will be further described:
As shown in Figure 1 to 4, a kind of portable power distribution circuit Portable DC ice-melt supply unit, it is by gasoline engine generator 1, three phase full wave rectification device 2; filter circuit 3, Switching Power Supply 4, voltage and current detection circuit 5; VD end 6, control and protective circuit 7, accessory power supply 8 forms.Wherein the main winding output of gasoline engine generator 1 is connected to the input of three-phase full wave rectifier circuit 2 by threephase cable.The output of three-phase full wave rectifier circuit 2 is connected to the input of filter circuit 3 by two cables, the output of filter circuit 3 is connected to the input of Switching Power Supply 4 by two cables, the output of Switching Power Supply 4 is connected to the input of voltage and current detection circuit 5 by two cables, the output of voltage and current detection circuit 5 is connected to VD end 6 by two cables.The auxiliary winding output of gasoline engine generator 1 is connected to the input of accessory power supply 8 by two cables; the output of accessory power supply 8 is connected to the power end of control and protective circuit 7 by two cables, controls and the output of protective circuit 7 is connected to the control end of two groups of insulated gate bipolar transistors (IGBT) of Switching Power Supply 4 by four cables, the output of control and protective circuit 7 is connected with the measurement port of voltage and current detection circuit 5 by bar cable.
Wherein, Switching Power Supply 4 comprises commutating capacitor 9, overvoltage protection device 10, insulated gate bipolar transistor 11, intermediate frequency transformer 12, rectifying device 13.The output of described filter circuit 3 is connected to the input of commutating capacitor 9 by two cables; the output of commutating capacitor 9 is connected to the input of overvoltage protection device 10 by two cables; the output of overvoltage protection device 10 is connected to the input of insulated gate bipolar transistor 11 by two cables; the output of insulated gate bipolar transistor (IGBT) 11 connects the input of intermediate frequency transformer 12 by two cables, the output of intermediate frequency transformer 12 is connected to the input of rectifying device 13 by three cables.
Wherein, to control and protective circuit 7 comprises and changes PCB 14, feedback of voltage and current device 15, overheat protector 16; The described output changing PCB 14 connects the input changing feedback of voltage and current device 15; the output of feedback of voltage and current device 15 connects the input of voltage and current detection circuit 9; PCB 14 is connected with overheat protector 16 by 2 cables; PCB 14 power supply is connected with accessory power supply 12 by 2 cables, and insulated gate bipolar transistor grid, the emitter of PCB 14 and Switching Power Supply 4 are connected.
Described commutating capacitor (9) comprises Change phase capacitance C1, Change phase capacitance C2; Described overvoltage protection device (10) comprises piezo-resistance RY1, electric capacity C3, resistance R1, electric capacity C4, resistance R2; Described insulated gate bipolar transistor (11) comprises insulated gate bipolar transistor V1, insulated gate bipolar transistor V2; Described intermediate frequency transformer (12) is the centre tapped intermediate frequency transformer T1 of band; Described rectifying device (13) comprises diode D1, diode D2, reactor L1 and filter capacitor LB1; Described Change phase capacitance C1 connects with Change phase capacitance C2, and the other end of Change phase capacitance C1 is connected with positive source, and the other end of Change phase capacitance C2 is connected with power cathode; Electric capacity C3, resistance R1, electric capacity C4, resistance R2 connect, and the other end of electric capacity C3 is connected with positive source, and the other end of resistance R2 is connected with power cathode; Insulated gate bipolar transistor V1 connects with insulated gate bipolar transistor V2, and the other end of insulated gate bipolar transistor V1 is connected with positive source, and the other end of insulated gate bipolar transistor V2 is connected with power cathode; Piezo-resistance RY1 one end is connected with positive source, and the piezo-resistance RY1 other end is connected with power cathode.Tie point w is provided with between Change phase capacitance C1 and Change phase capacitance C2, resistance R1, tie point y is provided with between electric capacity C4, tie point x is provided with between insulated gate bipolar transistor V1 and insulated gate bipolar transistor V2, tie point w is connected with one end of transformer T1 primary coil, tie point x, y is connected with the other end of transformer T1 primary coil, diode D1, be connected with one end of reactor L1 after the negative polarity end parallel connection of diode D2, diode D1, the positive ends of diode D2 is connected with the two ends of transformer T1 secondary coil respectively, one end of filter capacitor LB1 is connected to the center tap terminal of transformer T1 secondary coil, form the negative polarity end that direct current exports, the other end of filter capacitor LB1 and the other end of reactor L1 connect and compose the positive ends that direct current exports, grid, the emitter of insulated gate bipolar transistor V1 are connected with PCB (14), and grid, the emitter of insulated gate bipolar transistor V2 are connected with PCB (14).
Operation principle of the present invention: gasoline engine generator 1 exports the three-phase mid-frequency alternating current of about 600Hz; The three-phase alternating current that intermediate-frequengasoline gasoline generator 1 sends is transformed into six pulsation 300 ~ 500V direct voltages by three-phase full wave rectifier circuit 2; Filter circuit 3 adopts reactor and electrolytic capacitor to carry out filtering to three-phase six pulsating direct current.300 ~ 500V direct voltage inversion step-down is 20 ~ 60V direct voltage by Switching Power Supply 4, for distribution line ice-melt provides power supply; Voltage and current detection circuit 5 for control and protective circuit 7 feedback of voltage and current parameter is provided; VD end 6 provides current connection terminals mouth for distribution line ice-melt.Accessory power supply 8, for control and protective circuit 7 provides power supply, to control and B1, E1, B2, E2 end of protective circuit 7 provides control signal for the insulated gate bipolar transistor (IGBT) of Switching Power Supply 4.
Schematic diagram such as Fig. 4, C1, the C2 of Switching Power Supply 4 are Change phase capacitances, because of C1, C2 capacity equal and series connection, each electric capacity is filled with about 250V direct voltage.When V1 triggering and conducting, power supply+(C1 anode), V1, transformer m end, n end, C1 (-) flow through electric current, secondary coil s holds (+), o holds (-) induced voltage, exports 60V direct voltage through diode D1 rectification, reactor L1 and filter capacitor LB1 filtering; When V2 triggering and conducting, C2 (+) end, transformer n end, m end, V2, C2 (-) end flow through electric current, secondary coil t holds (+), o holds (-) induced voltage, exports 60V direct voltage through diode D2 rectification, reactor L1 and filter capacitor LB1 filtering.By regulating the control of V1, V2 through and off, can the size of VD.
By reference to the accompanying drawings the specific embodiment of the present invention is described although above-mentioned; but not limiting the scope of the invention; those skilled in the art, on the basis of technical scheme of the present invention, do not need to pay various amendment or distortion that creative work can make still within protection scope of the present invention.
Claims (6)
1. a portable power distribution line direct-current ice-melting supply unit, it is characterized in that: device comprises gasoline engine generator (1), three-phase full wave rectifier circuit (2), filter circuit (3), Switching Power Supply (4), voltage and current detection circuit (5), VD end (6), controls and protective circuit (7) and accessory power supply (8); Described gasoline engine generator (1) comprises main winding and auxiliary winding, the main winding output of gasoline engine generator (1) connects the input of three-phase full wave rectifier circuit (2), the output of three-phase full wave rectifier circuit (2) connects the input of filter circuit (3), the input of the output connecting valve power supply (4) of filter circuit (3), the output of Switching Power Supply (4) connects the input of voltage and current detection circuit (5), and the output of voltage and current detection circuit (5) connects VD end (6); The auxiliary winding output of gasoline engine generator (1) connects the input of accessory power supply (8); the output connection control of accessory power supply (8) and the power end of protective circuit (7); the output of control and protective circuit (7) is connected with Switching Power Supply (4), and the output of control and protective circuit (7) is also connected with voltage and current detection circuit (5).
2. portable power distribution circuit Portable DC ice-melt supply unit according to claim 1, is characterized in that: described Switching Power Supply (4) comprises commutating capacitor (9), overvoltage protection device (10), insulated gate bipolar transistor (11), intermediate frequency transformer (12) and rectifying device (13); The output of described filter circuit (3) connects the input of commutating capacitor (9); the output of commutating capacitor (9) connects the input of overvoltage protection device (10); the output of overvoltage protection device (10) connects the input of insulated gate bipolar transistor (11); the output of insulated gate bipolar transistor (11) connects the input of intermediate frequency transformer (12), and the output of intermediate frequency transformer (12) connects the input of rectifying device (13).
3. portable power distribution circuit Portable DC ice-melt supply unit according to claim 1, is characterized in that: described control and protective circuit (7) comprise changes PCB (14), feedback of voltage and current device (15) and overheat protector (16); The described output changing PCB (14) connects the input changing feedback of voltage and current device (15); the output of feedback of voltage and current device (15) connects the input of voltage and current detection circuit (9); PCB (14) is connected with overheat protector (16); PCB (14) is connected with accessory power supply (8), and grid, the emitter of PCB (14) and the insulated gate bipolar transistor (11) of described Switching Power Supply (4) are connected.
4. portable power distribution circuit Portable DC ice-melt supply unit according to claim 2, is characterized in that: described commutating capacitor (9) comprises Change phase capacitance C1, Change phase capacitance C2; Described overvoltage protection device (10) comprises piezo-resistance RY1, electric capacity C3, resistance R1, electric capacity C4, resistance R2; Described insulated gate bipolar transistor (11) comprises insulated gate bipolar transistor V1, insulated gate bipolar transistor V2; Described intermediate frequency transformer (12) is the centre tapped intermediate frequency transformer T1 of band; Described rectifying device (13) comprises diode D1, diode D2, reactor L1 and filter capacitor LB1; Described Change phase capacitance C1 connects with Change phase capacitance C2, and the other end of Change phase capacitance C1 is connected with positive source, and the other end of Change phase capacitance C2 is connected with power cathode; Electric capacity C3, resistance R1, electric capacity C4, resistance R2 connect, and the other end of electric capacity C3 is connected with positive source, and the other end of resistance R2 is connected with power cathode; Insulated gate bipolar transistor V1 connects with insulated gate bipolar transistor V2, and the other end of insulated gate bipolar transistor V1 is connected with positive source, and the other end of insulated gate bipolar transistor V2 is connected with power cathode; Piezo-resistance RY1 one end is connected with positive source, and the piezo-resistance RY1 other end is connected with power cathode.Tie point w is provided with between Change phase capacitance C1 and Change phase capacitance C2, resistance R1, tie point y is provided with between electric capacity C4, tie point x is provided with between insulated gate bipolar transistor V1 and insulated gate bipolar transistor V2, tie point w is connected with one end of transformer T1 primary coil, tie point x, y is connected with the other end of transformer T1 primary coil, diode D1, be connected with one end of reactor L1 after the negative polarity end parallel connection of diode D2, diode D1, the positive ends of diode D2 is connected with the two ends of transformer T1 secondary coil respectively, one end of filter capacitor LB1 is connected to the center tap terminal of transformer T1 secondary coil, form the negative polarity end that direct current exports, the other end of filter capacitor LB1 and the other end of reactor L1 connect and compose the positive ends that direct current exports, grid, the emitter of insulated gate bipolar transistor V1 are connected with control and protective circuit (7), and grid, the emitter of insulated gate bipolar transistor V2 are connected with control and protective circuit (7).
5. portable power distribution circuit Portable DC ice-melt supply unit according to claim 2, is characterized in that: described insulated gate bipolar transistor switching frequency (11) is 20 ~ 30kHz.
6. portable power distribution circuit Portable DC ice-melt supply unit according to claim 1, is characterized in that: bottom of device is provided with pulley.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510315031.0A CN104901254A (en) | 2015-06-10 | 2015-06-10 | Portable DC ice melting power supply device for distribution line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510315031.0A CN104901254A (en) | 2015-06-10 | 2015-06-10 | Portable DC ice melting power supply device for distribution line |
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| CN104901254A true CN104901254A (en) | 2015-09-09 |
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| CN201510315031.0A Pending CN104901254A (en) | 2015-06-10 | 2015-06-10 | Portable DC ice melting power supply device for distribution line |
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| CN105826860A (en) * | 2016-05-04 | 2016-08-03 | 国网新疆电力公司哈密供电公司 | Method for melting ice and snow of transmission line |
| CN113339132A (en) * | 2021-06-30 | 2021-09-03 | 重庆华世丹动力科技股份有限公司 | Auxiliary power supply convenient for low-speed starting of direct-current generator |
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Application publication date: 20150909 |