CN209675952U - Substation photovoltaic power-supply system - Google Patents
Substation photovoltaic power-supply system Download PDFInfo
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- CN209675952U CN209675952U CN201920278805.0U CN201920278805U CN209675952U CN 209675952 U CN209675952 U CN 209675952U CN 201920278805 U CN201920278805 U CN 201920278805U CN 209675952 U CN209675952 U CN 209675952U
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- photovoltaic
- voltage regulator
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- direct current
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Abstract
The utility model discloses a kind of substation photovoltaic power-supply systems, including photovoltaic module, photovoltaic controller, battery group, ac bus, exchange switching switch, power grid, stand in AC load, stand in direct current system, wherein photovoltaic controller include the first DC voltage regulator, the second DC voltage regulator, gird-connected inverter；Photovoltaic module is connected with the first DC voltage regulator, battery group is connected with the second DC voltage regulator, first DC voltage regulator, the second DC voltage regulator are connected with gird-connected inverter, the ac output end of gird-connected inverter is connected with power grid, ac bus simultaneously, power grid is connected with ac bus, AC load is connected to ac bus in standing, and exchange switching switch input terminal is connected with EPS output end, the ac bus of gird-connected inverter simultaneously, and interior direct current system of standing is connected to exchange switching output switching terminal.The utility model can make full use of solar energy for station internal loading power supply while in the case where electrical breakdown, is continuously direct current system power supply, ensures direct current system reliability.
Description
Technical field
The utility model relates to a kind of substation photovoltaic power-supply systems, belong to photo-voltaic power supply technical field.
Background technique
There are two types of existing substation photovoltaic power supply techniques, a kind of to see entitled " photovoltaic DC system for transforming plant (application
Number: patent document CN 201207581Y) ", it is characterized in that with battery group be spare charge and discharge power supply, have be arranged in parallel,
Alternately the charger current supply circuit of access and photovoltaic power supply circuit.Current supply circuit shape is controlled by relay by photovoltaic controller
State: when accumulator battery voltage reaches setting value A, charger current supply circuit is disconnected, the access of photovoltaic power supply circuit；When battery group electricity
When forcing down setting value B, the access of charger current supply circuit, photovoltaic power supply circuit is disconnected.By by application of solar energy in substation
Direct current system, to realize purpose that is energy-saving and improving direct current system reliability.
Another kind is shown in the patent document of entitled " substation's solar electric power supply system (application number: CN 205429873) ",
Wherein solar cell array, photovoltaic combiner box, gird-connected inverter, sell ammeter, load be sequentially connected, photovoltaic combiner box receive
Direct current from solar battery, DC conversion is AC energy by gird-connected inverter, by clean solar energy substation
Supply station electricity consumption uses and is connected to the grid, and reduces substation itself energy consumption, energy-saving and emission-reduction.
The first technology can not inverte direct current to alternating current, can not be abundant by photovoltaic electric energy when solar energy is abundant
Effective use；Second of technology directly converts solar energy into alternating current, the direct current component for the electricity consumption that do not account for arriving at a station, Ke Yili
The reliability of DC power supply in standing is improved with photovoltaic power generation.Therefore, existing substation photovoltaic power supply technique needs to improve.
Substation's station energy consumption, on the one hand from interior a large amount of power load of standing, on the other hand from electric energy
Remote transmission bring line loss.It both can be change if photo-voltaic power supply all the way is added on the basis of original AC system in standing
Power station fractional load provides power supply, and electricity more than needed can be sent into power grid with inversion grid connection, reduces substation itself energy
Source loss, energy conservation and environmental protection.
Only has a set of battery group as backup power source, battery group longtime running in existing 110kV and following substation
Inevitably capacity declines afterwards, to cause direct current system reliability decrease.Due to substation photovoltaic power-supply system
Independently of direct current system in standing, power supply and original AC power source, electric power storage can be ensured all the way for transformer station direct current system increase
Pond group forms complementation, the reliability of effective guarantee direct current system.
Utility model content
The purpose of this utility model is to provide a kind of substation photovoltaic power-supply systems, effectively convert solar energy into friendship
Galvanic electricity energy, while can in case of emergency power for direct current system, substation's loss, energy-saving and emission-reduction are reduced, and improve straight in station
Streaming system reliability.
The purpose of this utility model is achieved by the following technical programs:
A kind of substation photovoltaic power-supply system, including photovoltaic module, photovoltaic controller, battery group, ac bus, exchange
Switching switch, power grid, stand in AC load, stand in direct current system, wherein photovoltaic controller include the first DC voltage regulator, second
DC voltage regulator, gird-connected inverter；The photovoltaic module is connected with the first DC voltage regulator, battery group and the second direct current voltage reulation
Device is connected, and first DC voltage regulator, the second DC voltage regulator are connected with gird-connected inverter, the exchange of the gird-connected inverter
Output end is connected with power grid, ac bus simultaneously, and the power grid is connected with ac bus, and it is female that interior AC load of standing is connected to exchange
Line, the exchange switching switch input terminal is connected with EPS output end, the ac bus of gird-connected inverter simultaneously, straight in the station
Streaming system is connected to exchange switching output switching terminal.
The purpose of this utility model can also be further realized by following technical measures:
Aforementioned substation photovoltaic power-supply system, wherein the model FY270-20 of photovoltaic module.
Aforementioned substation photovoltaic power-supply system, wherein the model X3-Hybrid-5.0-D-E of photovoltaic controller.
Aforementioned substation photovoltaic power-supply system, wherein the model SC0500 of battery group.
Aforementioned substation photovoltaic power-supply system, wherein the model B16-30-10 of exchange switching switch.
It is supplied compared with prior art, the utility model has the beneficial effects that can make full use of solar energy for station internal loading
Electricity, and by extra power storage in battery group, if there is it is more than needed can be by electric energy reliable grid connection.Simultaneously in electrical breakdown
In the case of, it is continuously direct current system power supply, ensures direct current system reliability.Photovoltaic controller has energy management, battery longevity
Order management function.
Detailed description of the invention
Fig. 1 is the circuit structure diagram of the utility model.
Specific embodiment
The utility model is described in further detail in the following with reference to the drawings and specific embodiments.
As shown in Figure 1, substation photovoltaic power-supply system, including photovoltaic module, photovoltaic controller, battery group, exchange mother
Line, exchange switching switch, power grid, stand in AC load, stand in direct current system, wherein photovoltaic controller include the first direct current voltage reulation
Device, the second DC voltage regulator, gird-connected inverter；The wherein model FY270-20 of photovoltaic module；The model of photovoltaic controller
X3-Hybrid-5.0-D-E；The model SC0500 of battery group；The model B16-30-10 of exchange switching switch.The light
Volt component is connected with the first DC voltage regulator, and battery group is connected with the second DC voltage regulator, first DC voltage regulator, the
Two DC voltage regulators are connected with gird-connected inverter, the ac output end of the gird-connected inverter simultaneously with power grid, ac bus phase
Even, the power grid is connected with ac bus, and interior AC load of standing is connected to ac bus, and the exchange switching switch input terminal is same
When be connected with EPS output end, the ac bus of gird-connected inverter, in the station direct current system be connected to exchange switching switch output
End.
Photovoltaic module accesses the first DC voltage regulator in photovoltaic controller by power transmission line.Inside photovoltaic controller
The second DC voltage regulator pass through DC output end connect battery group；Gird-connected inverter in photovoltaic controller is defeated through exchange stream
Outlet is connected with power grid respectively and is connected by ac bus with AC load；Gird-connected inverter EPS in photovoltaic controller
Output end is connected by switching switch with direct current system ac input end.The output of first DC voltage regulator inside photovoltaic controller
End, the second DC voltage regulator input terminal are connected with combining inverter input end.Ac bus switchs connection direct current system through switching.
The photovoltaic controller of this system is the photovoltaic controller based on DC/DC DC voltage regulator and DC/AC gird-connected inverter,
With energy management, life of storage battery management, EPS off-network mode capabilities, gird-connected inverter output AC energy meet voltage,
The grid-connected requirement of frequency, phase.
In the utility model substation photovoltaic power-supply system, photovoltaic module is made of solar panel and bracket, installation
In roof of transformer substation, solar panel can effectively convert light energy into electric energy, can change the sun by adjusting bracket
The angle of energy solar panel maximally utilizes luminous energy.Photovoltaic module sends the direct current of generation to DC voltage regulator, the first direct current
Pressure regulator is used to be filtered the electric current that photovoltaic module exports and voltage adjustment, is allowed to meet the input electricity of gird-connected inverter
Pressure；Second DC voltage regulator is for adjusting the voltage that the first DC voltage regulator exports to the charging voltage of battery group, to store
Battery charging, and adjust the voltage that battery group exports to the input voltage of gird-connected inverter under EPS mode.It is grid-connected inverse
Become device to be responsible for the direct current that DC voltage regulator exports being converted to alternating current, the alternating current of output is with the voltage of power grid, frequency, phase
Position is completely the same, exports under normal circumstances from ac output end mouth, when grid power blackout, exports from the port EPS.Ac output end mouth
The electric energy of output preferentially supplies AC load by ac bus and uses, and extra electrical energy transportation is to power grid.Ac bus is used for
Collect, distribute the electric energy from photovoltaic controller and power grid to AC load and direct current system use.Exchange switching switch is used
In the power supply of selection direct current system, select ac bus as power supply under normal circumstances, when grid power blackout, selection photovoltaic controller
EPS out-put supply, when guaranteeing grid power blackout ensure direct current system reliability service.
It is big according to photovoltaic generation power and AC load since photovoltaic generation power is illuminated by the light intensity and time effects are larger
Small electric energy is preferentially used for AC load (direct current system) power supply, and secondly to charge the battery, battery still has extra electric energy after being full of
Then it is sold to power grid.Photovoltaic power supply insufficient section supplies electric energy notch by power grid.
When night or cloudy no light, ac output end mouth is without output at this time, AC load, direct current system electric energy by
Power grid supply.
When grid power blackout, the output of ac output end mouth non-transformer, AC load loses power supply, but EPS mode opens at this time
It is dynamic, it by photovoltaic controller is that direct current system is powered by battery group, if there is illumination, then solar panel and battery group
It is simultaneously direct current system power supply by photovoltaic controller.
It powers in conclusion this system can make full use of solar energy for station internal loading, by electric energy reliable grid connection more than needed, and
It is not only energy-saving with direct current system for combining, but also direct current system reliability can be improved.
In addition to the implementation, the utility model can also have other embodiments, all to use equivalent replacement or equivalent change
The technical solution to be formed is changed, is all fallen in the protection scope of the requires of the utility model.
Claims (5)
1. a kind of substation photovoltaic power-supply system, which is characterized in that including photovoltaic module, photovoltaic controller, battery group, exchange
Bus, exchange switching switch, power grid, stand in AC load, stand in direct current system, wherein photovoltaic controller include the first direct current tune
Depressor, the second DC voltage regulator, gird-connected inverter；The photovoltaic module is connected with the first DC voltage regulator, battery group and the
Two DC voltage regulators are connected, and first DC voltage regulator, the second DC voltage regulator are connected with gird-connected inverter, described grid-connected inverse
The ac output end for becoming device is connected with power grid, ac bus simultaneously, and the power grid is connected with ac bus, and interior AC load of standing connects
It is connected to ac bus, the exchange switching switch input terminal is connected with EPS output end, the ac bus of gird-connected inverter simultaneously,
Direct current system is connected to exchange switching output switching terminal in the station.
2. substation photovoltaic power-supply system as described in claim 1, which is characterized in that the model of the photovoltaic module
FY270-20。
3. substation photovoltaic power-supply system as described in claim 1, which is characterized in that the model of the photovoltaic controller
X3-Hybrid-5.0-D-E。
4. substation photovoltaic power-supply system as described in claim 1, which is characterized in that the model of the battery group
SC0500。
5. substation photovoltaic power-supply system as described in claim 1, which is characterized in that the model of the exchange switching switch
B16-30-10。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920278805.0U CN209675952U (en) | 2019-03-06 | 2019-03-06 | Substation photovoltaic power-supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920278805.0U CN209675952U (en) | 2019-03-06 | 2019-03-06 | Substation photovoltaic power-supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209675952U true CN209675952U (en) | 2019-11-22 |
Family
ID=68570646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920278805.0U Active CN209675952U (en) | 2019-03-06 | 2019-03-06 | Substation photovoltaic power-supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209675952U (en) |
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2019
- 2019-03-06 CN CN201920278805.0U patent/CN209675952U/en active Active
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