CN203289115U - Voltage regulation device for low-voltage circuit - Google Patents
Voltage regulation device for low-voltage circuit Download PDFInfo
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- CN203289115U CN203289115U CN2013202510584U CN201320251058U CN203289115U CN 203289115 U CN203289115 U CN 203289115U CN 2013202510584 U CN2013202510584 U CN 2013202510584U CN 201320251058 U CN201320251058 U CN 201320251058U CN 203289115 U CN203289115 U CN 203289115U
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Abstract
The utility model discloses a voltage regulation device for a low-voltage circuit. The voltage regulation device comprises a DSP (digital signal processing) chip, an AC/DC (alternating-current/direct-current) rectifying inversion circuit, three DC/DC (direct-current/direct-current) transformation circuits, a storage battery group, a first photoelectric coupler and three second photoelectric couplers, wherein the AC (alternating-current) terminal of the AC/DC rectifying inversion circuit is connected with a power grid, and the DC (direct-current) terminal of the AC/DC rectifying inversion circuit is connected with the three DC/DC transformation circuits respectively; the three DC/DC transformation circuits are connected with the storage battery group respectively; the DSP chip is connected with the AC/DC rectifying inversion circuit via the first photoelectric coupler; the three DC/DC transformation circuits are corresponding to the three second photoelectric couplers respectively one by one, and the DSP chip is connected with the DC/DC transformation circuit corresponding to one of the second photoelectric couplers via the second photoelectric coupler; and the DSP chip is connected with the storage battery group and the power grid. According to the voltage regulation device disclosed by the utility model, the problems of the circuit caused by the increase of a short-time load are fundamentally solved.
Description
Technical field
The utility model relates to the reactive power compensation field, relates in particular to a kind of low-voltage circuit regulator.
Background technology
Up to now, because electric power system lacks effective jumbo storage means, generating, transmission of electricity, distribution and electricity consumption must be completed simultaneously, and this just requires system to be in all the time in dynamic poised state, and instantaneous imbalance just may cause safety problem.For reaching above-mentioned purpose, electrical network must have enough reserve capacitys to be dealt with and often is only even shorter peak load of a few hours, has greatly increased the installation and operation expense of equipment.And the main cause of current circuit low-voltage is to be also due to short time interval load increase, causes voltage to fall.So, by installing traditional capacitor additional, can not deal with problems.And based on the New Reactive Power Compensation Device SVG of VSC, its DC side is electric capacity, the energy of storage is very limited, can only operate in two quadrants, both sent reactive power and absorbing reactive power, and active power that can not be a large amount of with systems exchange, as adopt energy-storage units in DC side, just can move in four quadrants, can send simultaneously or absorb active power and reactive power.
Therefore, a kind of regulator of low-voltage circuit based on energy storage technology of development is the problem that the applicant is devoted to solve.
Summary of the invention
The purpose of this utility model is to provide a kind of low-voltage circuit regulator, is installed on line end, by energy-storage units, is carrying out peak load shifting, thereby fundamentally solve circuit, increases the circuit question that causes due to short-term load (duty).The advantages such as simultaneously, have integrated design, volume is little, takes up an area less, and installing/dismounting is simple are applicable to solve the low-voltage problem temporarily.
The technical scheme that realizes above-mentioned purpose is:
A kind of low-voltage circuit regulator, outside electric power network, described low-voltage circuit regulator comprises the DSP(Digital Signal Processing) chip, AC/DC(ac/dc) rectification inverter circuit, three DC/DC(DC-DCs) translation circuit, batteries, the first photoelectrical coupler and three the second photoelectrical couplers, wherein:
The AC end of described AC/DC rectification inverter circuit connects described electrical network, and the DC end connects respectively described three DC/DC translation circuits;
Described three DC/DC translation circuits connect respectively described batteries;
Described dsp chip connects described AC/DC rectification inverter circuit by described the first photoelectrical coupler;
Described three DC/DC translation circuits are corresponding one by one with three the second photoelectrical couplers, and described dsp chip connects corresponding with it DC/DC translation circuit by second photoelectrical coupler respectively;
Described dsp chip connects described batteries;
Described dsp chip connects described electrical network, sampling three-phase line voltage and three phase network electric current.
Above-mentioned low-voltage circuit regulator, wherein, described AC/DC rectification inverter circuit comprises the first inductance, the second inductance, the 3rd inductance, an IGBT(insulated gate bipolar transistor), the 2nd IGBT, the 3rd IGBT, the 4th IGBT, the 5th IGBT, the 6th IGBT and the first electric capacity, wherein:
A described IGBT, the 3rd IGBT are connected with the 5th IGBT collector electrode separately, as the first output of described AC/DC rectification inverter circuit;
Described the 2nd IGBT, the 4th IGBT are connected with the 6th IGBT emitter separately, as the second output of described AC/DC rectification inverter circuit;
The emitter of a described IGBT is connected with the collector electrode of described the 2nd IGBT, and this end that joins connects described electrical network by described the first inductance;
The emitter of described the 3rd IGBT is connected with the collector electrode of described the 4th IGBT, and this end that joins connects described electrical network by described the second inductance;
The emitter of described the 5th IGBT is connected with the collector electrode of described the 6th IGBT, and this end that joins connects described electrical network by described the 3rd inductance;
Described the first electric capacity is connected between first output and the second output of described AC/DC rectification inverter circuit;
A described IGBT, the 2nd IGBT, the 3rd IGBT, the 4th IGBT, the 5th IGBT and the 6th IGBT base stage separately all connect described dsp chip by described the first photoelectrical coupler.
Above-mentioned low-voltage circuit regulator, wherein, described each DC/DC translation circuit comprises the first contactor, the second contactor, the second electric capacity, the 3rd electric capacity, the 4th inductance, the 5th inductance, the 7th IGBT, the 8th IGBT, the 9th IGBT, the tenth IGBT, the 11 IGBT, the 12 IGBT, the 13 IGBT, the 14 IGBT and transformer, wherein:
Described the 7th IGBT and the 9th IGBT collector electrode separately connect respectively an end of described the 4th inductance, and the other end of the 4th inductance, as the first input end of described DC/DC translation circuit, connects the first output of described AC/DC rectification inverter circuit;
Described the 8th IGBT is connected with the tenth IGBT emitter separately,, as the second input of described DC/DC translation circuit, connects the second output of described AC/DC rectification inverter circuit;
Described the 11 IGBT and the 13 IGBT collector electrode separately connect respectively an end of described the 5th inductance, and the other end of the 5th inductance, as the first output of described DC/DC translation circuit, connects described batteries;
Described the 12 IGBT is connected with the 14 IGBT emitter separately, and the second output as described DC/DC translation circuit, connect described batteries;
The emitter of described the 7th IGBT is connected with the collector electrode of described the 8th IGBT, and this end that joins connects the first end of the primary coil of described transformer;
The emitter of described the 9th IGBT is connected with the collector electrode of described the tenth IGBT, and this end that joins connects the second end of the primary coil of described transformer;
The emitter of described the 11 IGBT is connected with the collector electrode of described the 12 IGBT, and this end that joins connects the first end of the secondary coil of described transformer;
The emitter of described the 13 IGBT is connected with the collector electrode of described the 14 IGBT, and this end that joins connects the second end of the secondary coil of described transformer;
Described the second electric capacity is connected between the first input end and the second input of described DC/DC translation circuit;
Described the 3rd electric capacity is connected between first output and the second output of described DC/DC translation circuit;
Described the 7th IGBT the 8th IGBT, the 9th IGBT, the tenth IGBT, the 11 IGBT, the 12 IGBT, the 13 IGBT and the 14 IGBT base stage separately all connect described dsp chip by the second photoelectrical coupler corresponding with described DC/DC translation circuit;
Described the first contactor comprises normally opened contact and coil, its normally opened contact and the 4th inductance in parallel, and its coil connects described dsp chip by the second photoelectrical coupler corresponding with described DC/DC translation circuit;
Described the second contactor bag normally opened contact and coil, its normally opened contact and the 5th inductance in parallel, its coil connects described dsp chip by the second photoelectrical coupler corresponding with described DC/DC translation circuit.
Above-mentioned low-voltage circuit regulator, wherein, described low-voltage circuit regulator also comprises a man-machine interface that is connected with described dsp chip.
Above-mentioned low-voltage circuit regulator, wherein, described low-voltage circuit regulator also comprises a touch-screen that is connected with described dsp chip.
Above-mentioned low-voltage circuit regulator, wherein, described low-voltage circuit regulator also comprises an alarm that is connected with described dsp chip.
The beneficial effects of the utility model are: the utility model is based on energy storage technology, be installed on line end, control AC/DC circuit and DC/DC circuit by dsp chip, and by energy-storage units, carry out peak load shifting, increase thereby fundamentally solve circuit the circuit question that causes due to short-term load (duty).Simultaneously, the utility model is the integrated design, and volume is little, takes up an area less, and installing/dismounting is simple, has higher flexibility and better economy, can solve the short time interval load and increase and the problem that causes voltage to fall, is applicable to solve the low-voltage hot issue temporarily.
Description of drawings
Fig. 1 is the structural representation of low-voltage circuit regulator of the present utility model;
Fig. 2 is the circuit diagram of AC/DC rectification inverter circuit of the present utility model;
Fig. 3 is the circuit diagram of DC/DC translation circuit of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
See also Fig. 1, low-voltage circuit regulator of the present utility model, outside electric power network (100), described low-voltage circuit regulator comprises AC/DC rectification inverter circuit 1, three DC/DC translation circuits 2, batteries 3, dsp chip 4, the first photoelectrical coupler 5 and three the second photoelectrical couplers 6, wherein:
The AC end of AC/DC rectification inverter circuit 1 connects electrical network 100, and the DC end connects respectively three DC/DC translation circuits 2, for the conversion that realizes between alternating current and direct current;
Three DC/DC translation circuits 2 connect respectively batteries 3, are used for direct current is defeated by batteries 3 storages, perhaps the electric energy of storage in batteries 3 are passed to the DC end of AC/DC rectification inverter circuit 1;
Three DC/DC translation circuits 2 are corresponding one by one with three the second photoelectrical couplers 6, and dsp chip 4 connects corresponding with it DC/DC translation circuit 2 by second photoelectrical coupler 5 respectively;
In the present embodiment, the concrete structure of AC/DC rectification inverter circuit 1 as shown in Figure 2, comprise the first inductance L 11, the second inductance L 12, the 3rd inductance L 13, an IGBT Q11, the 2nd IGBT Q12, the 3rd IGBT Q13, the 4th IGBT Q14, the 5th IGBT Q15, the 6th IGBT Q16 and the first capacitor C 11, wherein:
The one IGBT Q11, the 3rd IGBT Q13 are connected with the 5th IGBT Q15 collector electrode separately, this end first output as AC/DC rectification inverter circuit 1 that is connected;
The 2nd IGBT Q12, the 4th IGBT Q14 are connected with the 6th IGBT Q16 emitter separately, this end second output as AC/DC rectification inverter circuit 1 that is connected;
The emitter of the one IGBT Q11 is connected with the collector electrode of the 2nd IGBT Q12, and this end that joins connects electrical network 100 by the first inductance L 11, namely connects the phase in three-phase circuit;
The emitter of the 3rd IGBT Q13 is connected with the collector electrode of the 4th IGBT Q14, and this end that joins connects electrical network 100 by the second inductance L 12, namely connects the phase in three-phase circuit;
The emitter of the 5th IGBT Q15 is connected with the collector electrode of the 6th IGBT Q16, and this end that joins connects electrical network 100 by the 3rd inductance L 13, namely connects the phase in three-phase circuit;
The first capacitor C 11 is connected between first output and the second output of AC/DC rectification inverter circuit 1;
The one IGBT Q11, the 2nd IGBT Q12, the 3rd IGBT Q13, the 4th IGBT Q14, the 5th IGBT Q15 and the 6th IGBT Q16 base stage separately all connect dsp chip 4 by the first photoelectrical coupler 5, accept the control of dsp chip 4.
In the present embodiment, the concrete structure of each DC/DC translation circuit 2 as shown in Figure 3, comprise the first contactor KM1, the second contactor KM2, the second capacitor C 21, the 3rd capacitor C 22, the 4th inductance L 21, the 5th inductance L 22, the 7th IGBT Q21, the 8th IGBT Q22, the 9th IGBT Q23, the tenth IGBT Q24, the 11 IGBT Q25, the 12 IGBT Q26, the 13 IGBT Q27, the 14 IGBT Q28 and transformer T, wherein:
The 7th IGBT Q21 and the 9th IGBT Q23 collector electrode separately connect respectively an end of the 4th inductance L 21, and the other end of the 4th inductance L 21, as the first input end of DC/DC translation circuit 2, connects the first output of AC/DC rectification inverter circuit 1;
The 8th IGBT Q22 is connected with the tenth IGBT Q24 emitter separately,, as the second input of DC/DC translation circuit 2, connects the second output of AC/DC rectification inverter circuit 1;
The 11 IGBT Q25 and the 13 IGBT Q27 collector electrode separately connect respectively an end of the 5th inductance L 22, and the other end of the 5th inductance L 22, as the first output of DC/DC translation circuit 2, connects batteries 3;
The 12 IGBT Q26 is connected with the 14 IGBT Q28 emitter separately,, as the second output of DC/DC translation circuit 2, connects batteries 3;
The emitter of the 7th IGBT Q21 is connected with the collector electrode of the 8th IGBT Q22, the first end of the primary coil of this end connection transformer T that joins;
The emitter of the 9th IGBT Q23 is connected with the collector electrode of the tenth IGBT Q24, the second end of the primary coil of this end connection transformer T that joins;
The emitter of the 11 IGBT Q25 is connected with the collector electrode of the 12 IGBT Q26, the first end of the secondary coil of this end connection transformer T that joins;
The emitter of the 13 IGBT Q27 is connected with the collector electrode of the 14 IGBT Q28, the second end of the secondary coil of this end connection transformer T that joins;
The second capacitor C 21 is connected between the first input end and the second input of DC/DC translation circuit 2;
The 3rd capacitor C 22 is connected between first output and the second output of DC/DC translation circuit 2;
The 7th IGBT Q21, the 8th IGBT Q22, the 9th IGBT Q23, the tenth IGBT Q24, the 11 IGBTQ25, the 12 IGBT Q26, the 13 IGBT Q27 and the 14 IGBT Q28 base stage separately all connect dsp chip 4 by the second photoelectrical coupler 6 corresponding with DC/DC translation circuit 2;
The first contactor KM1 comprises normally opened contact and coil, and its normally opened contact is in parallel with the 4th inductance L 21, and its coil connects dsp chip 4 by the second photoelectrical coupler 6 corresponding with DC/DC translation circuit 2;
The second contactor KM2 bag normally opened contact and coil, its normally opened contact is in parallel with the 5th inductance L 22, and its coil connects dsp chip 4 by the second photoelectrical coupler 6 corresponding with DC/DC translation circuit 2.
When charged state, the D.C. contactor of net side (the first contactor KM1) is with the 4th inductance L 21 short circuits, the D.C. contactor of battery side (the second contactor KM2) is opened, and the 5th inductance L 22 and the 3rd capacitor C 22 form LC low-pass filtering branch road, filtering high-frequency harmonic;
When the energy content of battery needed feedback grid 100, the D.C. contactor of net side (the first contactor KM1) was opened, and the 4th inductance L 21 and the second capacitor C 21 form the LC filter branch, leach high-frequency harmonic.The D.C. contactor of battery side (the second contactor KM2) is opened; The DC end charging that DC/DC translation circuit 2 is given AC/DC rectification inverter circuit 1 after with energy content of battery conversion, AC/DC rectification inverter circuit 1 feeds back to electrical network again with energy.
In the present embodiment, low-voltage circuit regulator of the present utility model also comprises man-machine interface 7, touch-screen 8 and the alarm 9 that is connected respectively with dsp chip 4, and man-machine interface 7 is used for connecting computer, is further analyzed processing; Touch-screen 8 is used for man-machine interaction; Alarm 9 is used for reporting to the police, and namely when going wrong (for example batteries 3 excess Temperatures), accepts dsp chip 4 and controls, thereby give the alarm.
In the present embodiment, it is TMS320F28335 that dsp chip 4 is selected model.
Above embodiment is only for illustration of the utility model, but not to restriction of the present utility model, person skilled in the relevant technique, in the situation that do not break away from spirit and scope of the present utility model, can also make various conversion or modification, therefore all technical schemes that are equal to also should belong to category of the present utility model, should be limited by each claim.
Claims (6)
1. low-voltage circuit regulator, outside electric power network (100), it is characterized in that, described low-voltage circuit regulator comprises dsp chip (4), AC/DC rectification inverter circuit (1), three DC/DC translation circuits (2), batteries (3), the first photoelectrical coupler (5) and three the second photoelectrical couplers (6), wherein:
The AC end of described AC/DC rectification inverter circuit (1) connects described electrical network (100), and the DC end connects respectively described three DC/DC translation circuits (2);
Described three DC/DC translation circuits (2) connect respectively described batteries (3);
Described dsp chip (4) connects described AC/DC rectification inverter circuit (1) by described the first photoelectrical coupler (5);
Described three DC/DC translation circuits (2) are corresponding one by one with three the second photoelectrical couplers (6), and described dsp chip (4) connects corresponding with it DC/DC translation circuit (2) by second photoelectrical coupler (5) respectively;
Described dsp chip (4) connects described batteries (3);
Described dsp chip (4) connects described electrical network (100), sampling three-phase line voltage and three phase network electric current.
2. low-voltage circuit regulator according to claim 1, it is characterized in that, described AC/DC rectification inverter circuit (1) comprises the first inductance (L11), the second inductance (L12), the 3rd inductance (L13), an IGBT(Q11), the 2nd IGBT(Q12), the 3rd IGBT(Q13), the 4th IGBT(Q14), the 5th IGBT(Q15), the 6th IGBT(Q16) and the first electric capacity (C11), wherein:
A described IGBT(Q11), the 3rd IGBT(Q13) with the 5th IGBT(Q15) separately collector electrode is connected, as the first output of described AC/DC rectification inverter circuit (1);
Described the 2nd IGBT(Q12), the 4th IGBT(Q14) with the 6th IGBT(Q16) separately emitter is connected, as the second output of described AC/DC rectification inverter circuit (1);
A described IGBT(Q11) emitter and described the 2nd IGBT(Q12) collector electrode be connected, this join the end connect described electrical network (100) by described the first inductance (L11);
Described the 3rd IGBT(Q13) emitter and described the 4th IGBT(Q14) collector electrode be connected, this join the end connect described electrical network (100) by described the second inductance (L12);
Described the 5th IGBT(Q15) emitter and described the 6th IGBT(Q16) collector electrode be connected, this join the end connect described electrical network (100) by described the 3rd inductance (L13);
Described the first electric capacity (C11) is connected between first output and the second output of described AC/DC rectification inverter circuit (1);
A described IGBT(Q11), the 2nd IGBT(Q12), the 3rd IGBT(Q13), the 4th IGBT(Q14), the 5th IGBT(Q15) with the 6th IGBT(Q16) separately base stage all connects described dsp chip (4) by described the first photoelectrical coupler (5).
3. low-voltage circuit regulator according to claim 2, it is characterized in that, described each DC/DC translation circuit (2) comprises the first contactor (KM1), the second contactor (KM2), the second electric capacity (C21), the 3rd electric capacity (C22), the 4th inductance (L21), the 5th inductance (L22), the 7th IGBT(Q21), the 8th IGBT(Q22), the 9th IGBT(Q23), the tenth IGBT(Q24), the 11 IGBT(Q25), the 12 IGBT(Q26), the 13 IGBT(Q27), the 14 IGBT(Q28) and transformer (T), wherein:
Described the 7th IGBT(Q21) with the 9th IGBT(Q23) collector electrode separately connects respectively an end of described the 4th inductance (L21), the other end of the 4th inductance (L21), as the first input end of described DC/DC translation circuit (2), connects the first output of described AC/DC rectification inverter circuit (1);
Described the 8th IGBT(Q22) with the tenth IGBT(Q24) separately emitter is connected, and, as the second input of described DC/DC translation circuit (2), connects the second output of described AC/DC rectification inverter circuit (1);
Described the 11 IGBT(Q25) with the 13 IGBT(Q27) collector electrode separately connects respectively an end of described the 5th inductance (L22), the other end of the 5th inductance (L22), as the first output of described DC/DC translation circuit (2), connects described batteries (3);
Described the 12 IGBT(Q26) with the 14 IGBT(Q28) separately emitter is connected, and, as the second output of described DC/DC translation circuit (2), connects described batteries (3);
Described the 7th IGBT(Q21) emitter and described the 8th IGBT(Q22) collector electrode be connected, this end that joins connects the first end of the primary coil of described transformer (T);
Described the 9th IGBT(Q23) emitter and described the tenth IGBT(Q24) collector electrode be connected, this end that joins connects the second end of the primary coil of described transformer (T);
Described the 11 IGBT(Q25) emitter and described the 12 IGBT(Q26) collector electrode be connected, this end that joins connects the first end of the secondary coil of described transformer (T);
Described the 13 IGBT(Q27) emitter and described the 14 IGBT(Q28) collector electrode be connected, this end that joins connects the second end of the secondary coil of described transformer (T);
Described the second electric capacity (C21) is connected between the first input end and the second input of described DC/DC translation circuit (2);
Described the 3rd electric capacity (C22) is connected between first output and the second output of described DC/DC translation circuit (2);
Described the 7th IGBT(Q21), the 8th IGBT(Q22), the 9th IGBT(Q23), the tenth IGBT(Q24), the 11 IGBT(Q25), the 12 IGBT(Q26), the 13 IGBT(Q27) with the 14 IGBT(Q28) separately base stage all connects described dsp chip (4) by the second photoelectrical coupler (6) corresponding with described DC/DC translation circuit (2);
Described the first contactor (KM1) comprises normally opened contact and coil, and its normally opened contact is in parallel with the 4th inductance (L21), and its coil connects described dsp chip (4) by the second photoelectrical coupler (6) corresponding with described DC/DC translation circuit (2);
Described the second contactor (KM2) bag normally opened contact and coil, its normally opened contact is in parallel with the 5th inductance (L22), and its coil connects described dsp chip (4) by the second photoelectrical coupler (6) corresponding with described DC/DC translation circuit (2).
4. according to claim 1 and 2 or 3 described low-voltage circuit regulators, is characterized in that, described low-voltage circuit regulator also comprises a man-machine interface (7) that is connected with described dsp chip (4).
5. according to claim 1 and 2 or 3 described low-voltage circuit regulators, is characterized in that, described low-voltage circuit regulator also comprises a touch-screen (8) that is connected with described dsp chip (4).
6. according to claim 1 and 2 or 3 described low-voltage circuit regulators, is characterized in that, described low-voltage circuit regulator also comprises an alarm (9) that is connected with described dsp chip (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013202510584U CN203289115U (en) | 2013-05-10 | 2013-05-10 | Voltage regulation device for low-voltage circuit |
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| CN2013202510584U CN203289115U (en) | 2013-05-10 | 2013-05-10 | Voltage regulation device for low-voltage circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103259278A (en) * | 2013-05-10 | 2013-08-21 | 国家电网公司 | Low voltage line voltage regulating device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103259278A (en) * | 2013-05-10 | 2013-08-21 | 国家电网公司 | Low voltage line voltage regulating device |
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