CN208723559U - The electric system of distributed photovoltaic power generation - Google Patents
The electric system of distributed photovoltaic power generation Download PDFInfo
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- CN208723559U CN208723559U CN201821247143.2U CN201821247143U CN208723559U CN 208723559 U CN208723559 U CN 208723559U CN 201821247143 U CN201821247143 U CN 201821247143U CN 208723559 U CN208723559 U CN 208723559U
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Abstract
The utility model discloses a kind of electric system of distributed photovoltaic power generation.The utility model includes electric system circuit and photovoltaic power generation circuit；Electric system circuit includes MPPT controller, charger I, charger II, battery BT1, battery BT2, main inverter, gird-connected inverter, gird-connected inverter filter, swept resistance R1, swept resistance R2, load L1, load L2, buzzer T, thermometer, hygrometer, irradiatometer, switch S1~S13；Photovoltaic power generation circuit includes 8 photovoltaic plate units and multiple diode D11, and each photovoltaic plate unit includes one piece of photovoltaic panel, 2 switches and a diode；8 photovoltaic plate units connect in four modes, comprising: 1*8 paralleling model, 4*2 paralleling model, 2*4 paralleling model, 8*1 series model.
Description
Technical field
The utility model belongs to intelligent control technology field, and the utility model provides a kind of electricity of distributed photovoltaic power generation
Force system.
Background technique
With increasingly progressing greatly for photovoltaic generating system research, large-sized photovoltaic power station is increasing.It is how that large-sized photovoltaic is electric
It is problem in the urgent need to address that station, which is not used to experimental study,.
Although electric system instantly and photovoltaic power generation technology are commonplace, how photovoltaic power generation and alternating current to be converted,
How the simulation system that photovoltaic power generation is converted with alternating current to be realized.Existing society lacks such technology.
Summary of the invention
The purpose of this utility model is in view of the deficiencies of the prior art, to provide a kind of power train of distributed photovoltaic power generation
System.
It is as follows that the utility model solves technical solution used by its technical problem:
The utility model includes electric system circuit and photovoltaic power generation circuit；
Electric system circuit include MPPT controller, charger I, charger II, battery BT1, battery BT2, master it is inverse
Become device, gird-connected inverter, gird-connected inverter filter, swept resistance R1, swept resistance R2, load L1, load L2, buzzer T,
Thermometer, hygrometer, irradiatometer, switch S1~S13；
One end of MPPT controller is connected with photovoltaic power generation circuit, a port and switch S1, S3 of another output end,
One end of S4, S5, S6 are connected；The other end of switch S1, S3, S4, S5, S6 respectively with one end of switch S2, gird-connected inverter
The a port of input terminal, one end of swept resistance R1, the one end for loading L1, buzzer T one end be connected；Swept resistance R1
The other end, load the other end ground connection of the other end of L1, buzzer T；
The other end of switch S2 is connected with one end of the anode of battery BT1, switch S7, the other end of switch S7 with
The a port of I output end of charger is connected；Another port of MPPT controller output end, I output end of charger it is another
A port is connected with the cathode of battery BT1；
The a port of combining inverter input end is connected with the other end of switch S3, another port and battery
The cathode of BT1 is connected；The a port of gird-connected inverter output end passes through switch S12 and gird-connected inverter filter input end
A port be connected, another port of gird-connected inverter output end is directly another with gird-connected inverter filter input end
A port is connected；One end of a port of gird-connected inverter filter output and swept resistance R2, load L2 one
It holds, a port of main inverter output end is connected, another port of gird-connected inverter filter output and sliding electricity
Hinder the other end of R2, load the other end of L2, another port of main inverter output end is connected.
The input terminal of charger I and charger II connects 220V alternating current, and a port of II output end of charger passes through
Be connected after switch S8 with the anode of battery BT2, the anode of battery BT2 pass sequentially through after switch S9, S11 with thermometer,
Hygrometer, irradiatometer one end be connected；The anode of battery BT2 inputs after passing sequentially through switch S9, S10 with main inverter
The a port at end is connected；Another port of II output end of charger is connected with the cathode of battery BT2, at the same with master
Another port of inverter input terminal, the other end of thermometer, the other end of hygrometer, irradiatometer the other end be connected.
In entire electric system circuit, 220V alternating current is that charger I and charger II charge, and battery BT2 can only
It is charged by charger II；Battery BT1 can be charged by charger I, or be carried out by photovoltaic power generation circuit
Charging.
Battery BT2 powers to main inverter, to generate simulation alternating current；
Battery BT1 or photovoltaic power generation circuit are used to power to gird-connected inverter；
Swept resistance R1, load L1, buzzer T are for simulating different grades of load electricity consumption in direct current；
Swept resistance R2, load L2 are for simulating different grades of load electricity consumption in alternating current in alternating current；
Photovoltaic power generation circuit includes 8 photovoltaic plate units and multiple diode D11, and each photovoltaic plate unit includes one block of light
Lie prostrate plate, 2 switches and a diode；8 photovoltaic plate units connect in four modes, comprising: 1*8 paralleling model, 4*2 are in parallel
Mode, 2*4 paralleling model, 8*1 series model；
Each photovoltaic plate unit includes photovoltaic panel P, switch S01, switch S02, diode D22, and specific connection relationship is as follows:
The cathode of photovoltaic panel P and one end of switch S02, the anode of diode D22, MPPT controller input terminal a port phase
The anode of connection, photovoltaic panel P is connected with one end of the other end of switch S02, the cathode of diode D22, switch S01, switchs
The other end of S01 is connected with the anode of diode D11；The input terminal of the cathode and MPPT controller of diode D11 it is another
A port is connected；
Each photovoltaic plate unit includes photovoltaic panel P, switch S01, switch S02, diode D22, and specific connection relationship is as follows:
The cathode of photovoltaic panel P and one end of switch S02, the anode of diode D22, MPPT controller input terminal a port phase
The anode of connection, photovoltaic panel P is connected with one end of the other end of switch S02, the cathode of diode D22, switch S01, switchs
The other end of S01 is connected with the anode of diode D11；The input terminal of the cathode and MPPT controller of diode D11 it is another
A port is connected.
When photovoltaic power generation circuit is with the power generation of 1*8 paralleling model, each photovoltaic plate unit is connected with a diode D11
The branch in parallel as one afterwards；And in eight switch S01, one or more switch S01 closure, switch S02 is disconnected, then light
Volt electricity-generating circuit is in normal operating conditions.
When photovoltaic power generation circuit is with the power generation of 2*4 paralleling model, two photovoltaic plate units are connected with a diode D11
The branch in parallel as one afterwards；Two switches are one group in a parallel branch in eight switch S01, as long as wherein one group
Switch S01 closure, switch S02 disconnection, then photovoltaic power generation circuit is in normal operating conditions；When one of photovoltaic panel P is damaged
Bad when, directly passes through the diode D22 turning circuit in parallel with photovoltaic panel P.
When photovoltaic power generation circuit is with the power generation of 4*2 paralleling model, after four photovoltaic plate units are connected with a diode D11
The branch in parallel as one；Four switches are one group in eight switch S01, as long as wherein one group of switch S01 closure, switch
S02 is disconnected, then photovoltaic power generation circuit is in normal operating conditions；When any one piece of photovoltaic panel P damage in one group, directly
Pass through the diode D22 turning circuit in parallel with photovoltaic panel P.
When photovoltaic power generation circuit is with the power generation of 8*1 series model, eight photovoltaic plate units are connected with a diode D11
It is connected afterwards with MPPT controller；Eight switch S01 series connection, all switch S01 closures, switch S02 are disconnected, then photovoltaic power generation electricity
Road is in normal operating conditions；When one of photovoltaic panel P damage, directly pass through two poles in parallel with photovoltaic panel P
Pipe D22 turning circuit.
The utility model has the beneficial effect that:
The utility model can be used for photovoltaic generating system research, working principle and composed structure with true photovoltaic plant
Unanimously, large-sized photovoltaic power station operating condition is simulated.
The utility model solves large-sized photovoltaic power station and is not used to experimental study.
The photovoltaic battery panel that the utility model with four kinds of photovoltaic array topological structures of free switching, can simulate different power stations connects
Connect situation.
The utility model can carry out circuit break and short circuit control to every piece of solar panel in photovoltaic array, can use photovoltaic array
Fault diagnosis research.
The utility model may be implemented to simulate grid-connected ability, can be used for the grid-connected research of Photovoltaic new energy.
The utility model can individually study MPPT control, accumulator cell charging and discharging.
Detailed description of the invention
Fig. 1 is the utility model figure of power system.
Fig. 2 is the utility model photovoltaic power generation circuit 1*8 paralleling model figure.
Fig. 3 is the utility model photovoltaic power generation circuit 4*2 paralleling model figure.
Fig. 4 is the utility model photovoltaic power generation circuit 2*4 paralleling model figure.
Fig. 5 is the utility model photovoltaic power generation circuit 8*1 series model figure.
Fig. 6 is the utility model photovoltaic power generation circuit 4*2 paralleling model implementation example figure.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples.
A kind of electric system of distributed photovoltaic power generation, including electric system circuit and photovoltaic power generation circuit；
As shown in Figure 1, electric system circuit includes MPPT controller, charger I, charger II, battery BT1, electric power storage
Pond BT2, main inverter, gird-connected inverter, gird-connected inverter filter, swept resistance R1, swept resistance R2, load L1, load
L2, buzzer T, thermometer, hygrometer, irradiatometer, switch S1~S13；
One end of MPPT controller is connected with photovoltaic power generation circuit, a port and switch S1, S3 of another output end,
One end of S4, S5, S6 are connected；The other end of switch S1, S3, S4, S5, S6 respectively with one end of switch S2, gird-connected inverter
The a port of input terminal, one end of swept resistance R1, the one end for loading L1, buzzer T one end be connected；Swept resistance R1
The other end, load the other end ground connection of the other end of L1, buzzer T；
The other end of switch S2 is connected with one end of the anode of battery BT1, switch S7, the other end of switch S7 with
The a port of I output end of charger is connected；Another port of MPPT controller output end, I output end of charger it is another
A port is connected with the cathode of battery BT1；
The a port of combining inverter input end is connected with the other end of switch S3, another port and battery
The cathode of BT1 is connected；The a port of gird-connected inverter output end passes through switch S12 and gird-connected inverter filter input end
A port be connected, another port of gird-connected inverter output end is directly another with gird-connected inverter filter input end
A port is connected；One end of a port of gird-connected inverter filter output and swept resistance R2, load L2 one
It holds, a port of main inverter output end is connected, another port of gird-connected inverter filter output and sliding electricity
Hinder the other end of R2, load the other end of L2, another port of main inverter output end is connected.
The input terminal of charger I and charger II connects 220V alternating current, and a port of II output end of charger passes through
Be connected after switch S8 with the anode of battery BT2, the anode of battery BT2 pass sequentially through after switch S9, S11 with thermometer,
Hygrometer, irradiatometer one end be connected；The anode of battery BT2 inputs after passing sequentially through switch S9, S10 with main inverter
The a port at end is connected；Another port of II output end of charger is connected with the cathode of battery BT2, at the same with master
Another port of inverter input terminal, the other end of thermometer, the other end of hygrometer, irradiatometer the other end be connected.
In entire electric system circuit, 220V alternating current is that charger I and charger II charge, and battery BT2 can only
It is charged by charger II；Battery BT1 can be charged by charger I, or be carried out by photovoltaic power generation circuit
Charging.
Battery BT2 powers to main inverter, to generate simulation alternating current；
Battery BT1 or photovoltaic power generation circuit are used to power to gird-connected inverter；
Swept resistance R1, load L1, buzzer T are for simulating different grades of load electricity consumption in direct current；
Swept resistance R2, load L2 are for simulating different grades of load electricity consumption in alternating current in alternating current；
Photovoltaic power generation circuit includes 8 photovoltaic plate units and multiple diode D11, and each photovoltaic plate unit includes one block of light
Lie prostrate plate, 2 switches and a diode；8 photovoltaic plate units connect in four modes, comprising: 1*8 paralleling model, 4*2 are in parallel
Mode, 2*4 paralleling model, 8*1 series model；
Each photovoltaic plate unit includes photovoltaic panel P, switch S01, switch S02, diode D22, and specific connection relationship is as follows:
The cathode of photovoltaic panel P and one end of switch S02, the anode of diode D22, MPPT controller input terminal a port phase
The anode of connection, photovoltaic panel P is connected with one end of the other end of switch S02, the cathode of diode D22, switch S01, switchs
The other end of S01 is connected with the anode of diode D11；The input terminal of the cathode and MPPT controller of diode D11 it is another
A port is connected；
As shown in Fig. 2, when photovoltaic power generation circuit is with the power generation of 1*8 paralleling model, it is one or more in eight switch S01
Switch S01 closure, switch S02 are disconnected, then photovoltaic power generation circuit is in normal operating conditions；Diode D11 is for preventing electric current
Reflux damage photovoltaic panel；
As shown in figure 3, two switches are one in eight switch S01 when photovoltaic power generation circuit is with the power generation of 2*4 paralleling model
Group, as long as wherein one group of switch S01 closure, switch S02 are disconnected, then photovoltaic power generation circuit is in normal operating conditions；When it
In one piece of photovoltaic panel P damage when, directly pass through the diode D22 turning circuit in parallel with photovoltaic panel P；Diode D11
For preventing current reflux from damaging photovoltaic panel；
As shown in figure 4, room switch is one in eight switch S01 when photovoltaic power generation circuit is with the power generation of 4*2 paralleling model
Group, as long as wherein one group of switch S01 closure, switch S02 are disconnected, then photovoltaic power generation circuit is in normal operating conditions；When one
In group when any one piece of photovoltaic panel P damage, directly pass through the diode D22 turning circuit in parallel with photovoltaic panel P；Two poles
Pipe D11 is for preventing current reflux from damaging photovoltaic panel；
As shown in figure 5, when photovoltaic power generation circuit is with the power generation of 8*1 series model, eight switch S01 series connection, all switches
S01 closure, switch S02 are disconnected, then photovoltaic power generation circuit is in normal operating conditions；When one of photovoltaic panel P damage
It waits, directly passes through the diode D22 turning circuit in parallel with photovoltaic panel P；Diode D11 is for preventing current reflux from damaging
Photovoltaic panel.
Embodiment 1:
As shown in fig. 6, physical circuit includes switch S30-S45 when photovoltaic power generation circuit is with the power generation of 2*4 paralleling model,
Diode D17-D28, photovoltaic panel 1-8；
Photovoltaic plate unit 1 includes switch S30 and S31, diode D18 and photovoltaic panel 1；Wherein switch S31, diode D18
In parallel with 1 three of photovoltaic panel, one end of switch S30 is connected with parallel outputs；
Photovoltaic plate unit 2 includes switch S32 and S33, diode D19 and photovoltaic panel 2；Wherein switch S33, diode D19
In parallel with 2 three of photovoltaic panel, one end of switch S32 is connected with parallel outputs；
The branch in parallel as one after photovoltaic plate unit 1, photovoltaic plate unit 2 and diode D17 series connection；Diode D17
For preventing current reflux from damaging photovoltaic panel；When photovoltaic panel 1 is damaged, circuit passes through diode D19 turning circuit；
Photovoltaic plate unit 3 includes switch S34 and S35, diode D21 and photovoltaic panel 3；Wherein switch S35, diode D21
In parallel with 3 three of photovoltaic panel, switch S34 is connected with parallel outputs；
Photovoltaic plate unit 4 includes switch S36 and S37, diode D22 and photovoltaic panel 4；Wherein switch S37, diode D22
In parallel with 4 three of photovoltaic panel, switch S36 is connected with parallel outputs；
The branch in parallel as one after photovoltaic plate unit 3, photovoltaic plate unit 4 and diode D20 series connection；
Photovoltaic plate unit 5 includes switch S38 and S39, diode D24 and photovoltaic panel 5；Wherein switch S39, diode D24
In parallel with 5 three of photovoltaic panel, switch S38 is connected with parallel outputs；
Photovoltaic plate unit 6 includes switch S40 and S41, diode D25 and photovoltaic panel 6；Wherein switch S41, diode D25
In parallel with 6 three of photovoltaic panel, switch S40 is connected with parallel outputs；
The branch in parallel as one after photovoltaic plate unit 5, photovoltaic plate unit 6 and diode D23 series connection；
Photovoltaic plate unit 7 includes switch S42 and S43, diode D27 and photovoltaic panel 7；Wherein switch S43, diode D27
In parallel with 7 three of photovoltaic panel, switch S42 is connected with parallel outputs；
Photovoltaic plate unit 8 includes switch S44 and S45, diode D28 and photovoltaic panel 8；Wherein switch S45, diode D28
In parallel with 8 three of photovoltaic panel, switch S44 is connected with parallel outputs；
The branch in parallel as one after photovoltaic plate unit 7, photovoltaic plate unit 8 and diode D26 series connection.
Claims (9)
1. the electric system of distributed photovoltaic power generation, it is characterised in that including electric system circuit and photovoltaic power generation circuit；
Electric system circuit include MPPT controller, charger I, charger II, battery BT1, battery BT2, main inverter,
Gird-connected inverter, gird-connected inverter filter, swept resistance R1, swept resistance R2, load L1, load L2, buzzer T, temperature
Meter, hygrometer, irradiatometer, switch S1~S13；
One end of MPPT controller is connected with photovoltaic power generation circuit, a port of another output end and switch S1, S3, S4,
One end of S5, S6 are connected；The other end of switch S1, S3, S4, S5, S6 are inputted with one end of switch S2, gird-connected inverter respectively
The a port at end, one end of swept resistance R1, the one end for loading L1, buzzer T one end be connected；Swept resistance R1's is another
One end, the other end ground connection for loading the other end of L1, buzzer T；
The other end of switch S2 is connected with one end of the anode of battery BT1, switch S7, the other end and charger of switch S7
The a port of I output end is connected；Another port of MPPT controller output end, I output end of charger another end
Mouth is connected with the cathode of battery BT1；
The a port of combining inverter input end is connected with the other end of switch S3, another port is with battery BT1's
Cathode is connected；The a port of gird-connected inverter output end passes through switch S12 and the one of gird-connected inverter filter input end
A port is connected, another port of gird-connected inverter output end directly with gird-connected inverter filter input end another
Port is connected；The a port of gird-connected inverter filter output and one end of swept resistance R2, the one end for loading L2, master
The a port of inverter output end is connected, another port of gird-connected inverter filter output is with swept resistance R2's
The other end, load the other end of L2, another port of main inverter output end is connected；
The input terminal of charger I and charger II connects 220V alternating current, and a port of II output end of charger passes through switch
Be connected after S8 with the anode of battery BT2, the anode of battery BT2 pass sequentially through after switch S9, S11 with thermometer, humidity
It counts, one end of irradiatometer is connected；The anode of battery BT2 passes sequentially through one with main inverter input terminal after switch S9, S10
A port is connected；Another port of II output end of charger is connected with the cathode of battery BT2, while and main inverter
Another port of input terminal, the other end of thermometer, the other end of hygrometer, irradiatometer the other end be connected.
2. the electric system of distributed photovoltaic power generation according to claim 1, it is characterised in that entire electric system circuit
In, 220V alternating current is that charger I and charger II charge, and battery BT2 can only be charged by charger II；Electric power storage
Pond BT1 can be charged by charger I, or be charged by photovoltaic power generation circuit.
3. the electric system of distributed photovoltaic power generation according to claim 1 or 2, it is characterised in that battery BT2 is to master
Inverter power supply, to generate simulation alternating current；Battery BT1 or photovoltaic power generation circuit are used to power to gird-connected inverter；It is sliding
Dynamic resistance R1, load L1, buzzer T are for simulating different grades of load electricity consumption in direct current；Swept resistance R2, load L2 are used
Different grades of load electricity consumption in alternating current is simulated in alternating current.
4. the electric system of distributed photovoltaic power generation according to claim 1 or 2, it is characterised in that photovoltaic power generation circuit packet
8 photovoltaic plate units and multiple diode D11 are included, each photovoltaic plate unit includes one piece of photovoltaic panel, 2 switches and two poles
Pipe；8 photovoltaic plate units connect in four modes, comprising: 1*8 paralleling model, 4*2 paralleling model, 2*4 paralleling model, 8*1 string
Gang mould formula.
5. the electric system of distributed photovoltaic power generation according to claim 4, it is characterised in that:
Each photovoltaic plate unit includes photovoltaic panel P, switch S01, switch S02, diode D22, and specific connection relationship is as follows: photovoltaic
The cathode of plate P and one end of switch S02, the anode of diode D22, MPPT controller a port of input terminal be connected,
The anode of photovoltaic panel P is connected with one end of the other end of switch S02, the cathode of diode D22, switch S01, switch S01's
The other end is connected with the anode of diode D11；Another port of the input terminal of the cathode and MPPT controller of diode D11
It is connected.
6. the electric system of distributed photovoltaic power generation according to claim 5, it is characterised in that:
When photovoltaic power generation circuit is with the power generation of 1*8 paralleling model, conduct after each photovoltaic plate unit is connected with a diode D11
One branch in parallel；And in eight switch S01, one or more switch S01 closure, switch S02 is disconnected, then photovoltaic power generation electricity
Road is in normal operating conditions.
7. the electric system of distributed photovoltaic power generation according to claim 5, it is characterised in that:
When photovoltaic power generation circuit is with the power generation of 2*4 paralleling model, conduct after two photovoltaic plate units are connected with a diode D11
One branch in parallel；Two switches are one group in a parallel branch in eight switch S01, as long as wherein one group of switch
S01 closure, switch S02 are disconnected, then photovoltaic power generation circuit is in normal operating conditions；When one of photovoltaic panel P damage
It waits, directly passes through the diode D22 turning circuit in parallel with photovoltaic panel P.
8. the electric system of distributed photovoltaic power generation according to claim 5, it is characterised in that:
When photovoltaic power generation circuit is with the power generation of 4*2 paralleling model, conduct after four photovoltaic plate units are connected with a diode D11
One branch in parallel；Four switches are one group in eight switch S01, as long as wherein one group of switch S01 closure, switch S02
It disconnects, then photovoltaic power generation circuit is in normal operating conditions；It is directly logical when any one piece of photovoltaic panel P damage in one group
Cross the diode D22 turning circuit in parallel with photovoltaic panel P.
9. the electric system of distributed photovoltaic power generation according to claim 5, it is characterised in that:
When photovoltaic power generation circuit with 8*1 series model power generation when, eight photovoltaic plate units connect with a diode D11 after and
MPPT controller is connected；Eight switch S01 series connection, all switch S01 closures, switch S02 is disconnected, then at photovoltaic power generation circuit
In normal operating conditions；When one of photovoltaic panel P damage, directly pass through the diode D22 in parallel with photovoltaic panel P
Turning circuit.
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| CN201821247143.2U CN208723559U (en) | 2018-08-03 | 2018-08-03 | The electric system of distributed photovoltaic power generation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109149628A (en) * | 2018-08-03 | 2019-01-04 | 杭州电子科技大学 | A kind of electric system of distributed photovoltaic power generation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109149628A (en) * | 2018-08-03 | 2019-01-04 | 杭州电子科技大学 | A kind of electric system of distributed photovoltaic power generation |
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