CN211018286U - Intelligent high-efficiency power distribution gain device for photovoltaic power station - Google Patents
Intelligent high-efficiency power distribution gain device for photovoltaic power station Download PDFInfo
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- CN211018286U CN211018286U CN201921565714.1U CN201921565714U CN211018286U CN 211018286 U CN211018286 U CN 211018286U CN 201921565714 U CN201921565714 U CN 201921565714U CN 211018286 U CN211018286 U CN 211018286U
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Abstract
The utility model discloses a high-efficient distribution gain device of photovoltaic power plant intelligence, the power generation unit is connected to the direct current input, photovoltaic inverter is connected to the direct current output, including auxiliary power supply, data controller and distribution output module, auxiliary power supply is used for providing the electric energy to data controller, data controller real-time detection and gather the direct current voltage of power generation unit, and carry out the operation according to photovoltaic inverter's starting voltage and then readjust the generated energy of power generation unit, distribution output module is according to data controller's operation processing data, adopt distribution contactor to integrate the power generation unit of being connected with the direct current input, rethread direct current output exports qualified direct current voltage again, drive photovoltaic inverter starts. In this way, the utility model discloses high-efficient distribution gain device of photovoltaic power plant intelligence can be in current photovoltaic power plant and future photovoltaic power plant seamless connection, promotes photovoltaic power plant equipment utilization and increases the generated energy.
Description
Technical Field
The utility model relates to a photovoltaic power plant electricity generation technical field especially relates to a high-efficient distribution gain device of photovoltaic power plant intelligence.
Background
In the field of photovoltaic power generation of new energy, under the influence of illumination, the power generation time of a photovoltaic power station changes along with the change of illumination, and normal power generation can be realized only under the condition that the illumination intensity meets the requirements of a power generation system.
The power cannot be generated in the rest time, such as: in the early morning, the sun rises or slightly exposes, the sunlight illumination is weak, and the sunlight illumination is not enough to drive the photovoltaic power generation system to normally work; in the sunset evening, the sunlight illumination gradually weakens, the working voltage of the solar cell panel square matrix is reduced, and the power generation equipment such as an inverter stops working; in rainy days, the illuminance is weak, the power generated by the cell panel matrix can not reach the working voltage required by units such as inversion power generation and the like, and the power generation system can not work normally.
Most of the light which is not enough to start the photovoltaic power generation equipment is wasted, especially in the morning, evening and rainy days, so that the photovoltaic power generation equipment is idle.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the main technical problem who solves provides a high-efficient distribution gain device of photovoltaic power plant intelligence, through the operation to the power station structure and the illumination condition, provides the power that satisfies inverter device drive and opens the dc-to-ac converter in advance and postpone the dc-to-ac converter stop working time, reaches the power generation benefit maximize, can be in current photovoltaic power plant and future photovoltaic power plant seamless connection, promotes photovoltaic power plant equipment utilization and increases the generated energy.
In order to solve the technical problem, the utility model discloses a technical scheme be: provides an intelligent high-efficiency power distribution gain device of a photovoltaic power station, which is provided with a direct current input end and a direct current output end, wherein the direct current input end is connected with a power generation unit, the direct current output end is connected with a photovoltaic inverter,
also comprises an auxiliary power supply, a data controller and a power distribution output module, wherein the auxiliary power supply is connected with the data controller and is used for supplying electric energy to the data controller,
the direct current input end is connected with the input end of the data controller through the power distribution output module, and the output end of the data controller is connected with the power distribution output module and outputs direct current voltage meeting the starting requirement of the photovoltaic inverter through the direct current output end.
In a preferred embodiment of the present invention, the power generating unit employs a photovoltaic array formed by assembling a plurality of photovoltaic modules, and is configured to absorb solar energy, convert the solar energy into a dc voltage, and transmit the dc voltage to the power distribution gain device.
In a preferred embodiment of the present invention, the auxiliary power source can be selected to be a power input within 380V ac, 220V ac or 1000V dc.
In a preferred embodiment of the present invention, a surge arrester is further included, and the surge arrester is connected to the auxiliary power supply through an electric wire to perform overvoltage protection.
In a preferred embodiment of the present invention, the data controller is used for detecting and collecting the dc voltage of the power generating unit in real time, and performing an operation process according to the starting voltage of the photovoltaic inverter and then readjusting the power generation amount of the power generating unit.
In a preferred embodiment of the present invention, the data controller is one of P L C or a single chip microcomputer.
In a preferred embodiment of the present invention, the power distribution output module employs a power distribution contactor, processes data according to the operation of the data controller, integrates the power generation unit connected to the dc input terminal using the power distribution contactor, and outputs a qualified dc voltage again through the dc output terminal to drive the photovoltaic inverter to start.
In a preferred embodiment of the present invention, the power generating unit further includes a power generating unit for outputting energy through a chemical energy storage manner, including a lead-acid battery pack power generating unit, a lithium battery pack power generating unit, or a vanadium battery pack power generating unit.
The utility model has the advantages that: the utility model discloses high-efficient distribution gain device of photovoltaic power plant intelligence can be in current photovoltaic power plant and future photovoltaic power plant seamless connection, promotes photovoltaic power plant equipment utilization and increases the generated energy.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:
fig. 1 is a schematic structural diagram of a preferred embodiment of the intelligent high-efficiency power distribution gain device for a photovoltaic power station of the present invention;
fig. 2 is a schematic structural diagram of a preferred embodiment of the photovoltaic power station intelligent high-efficiency power distribution gain device of the present invention applied to a photovoltaic power station;
the parts in the drawings are numbered as follows: 100. auxiliary power supply, 200, data controller, 300, surge arrester, 400, distribution output module, 500, direct current input, 600, direct current output, 700, photovoltaic square matrix, 800, high-efficient distribution gain device of photovoltaic power plant intelligence, 900, photovoltaic inverter.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1 to 2, an embodiment of the present invention includes:
example one
The utility model provides a high-efficient distribution gain device of photovoltaic power plant intelligence, has direct current input 500 and direct current output 600, and direct current input 500 connects the power generation unit, and direct current output 600 connects photovoltaic inverter 900.
The power generation unit adopts a photovoltaic square matrix 700, and the photovoltaic square matrix 700 is formed by assembling a plurality of photovoltaic modules and is used for absorbing solar energy, converting the solar energy into direct-current voltage and sending the direct-current voltage to the power distribution gain device.
The intelligent high-efficiency power distribution gain device further comprises an auxiliary power supply 100, a data controller 200, a surge arrester 300 and a power distribution output module 400, wherein the auxiliary power supply 100 is connected with the data controller 200 and used for providing electric energy for the data controller 200, and the surge arrester 300 is connected with the auxiliary power supply 100 through a wire for overvoltage protection.
The auxiliary power supply 100 can select power supply input within 380V of alternating current, 220V of alternating current or 1500V of direct current, and can be matched with a rectifying device to achieve usable auxiliary electric energy.
The dc input terminal 500 is connected to the input terminal of the data controller 200 through the distribution output module 400, and the output terminal of the data controller 200 is connected to the distribution output module 400 and outputs a dc voltage satisfying the start of the photovoltaic inverter 900 through the dc output terminal 600.
The data controller 200 is one of P L C or a single chip microcomputer, and the data controller 200 can detect and collect the dc voltage of the power generation unit in real time, perform operation processing according to the starting voltage of the photovoltaic inverter 900, and then readjust the power generation amount of the power generation unit.
Specifically, the data controller 200 compares the collected dc voltage of the power generation component with the dc start voltage that needs to be input by the photovoltaic inverter 900, then performs operation according to the start voltage of the photovoltaic inverter 900, and rearranges and combines the power generation components in the power generation unit to readjust the power generation amount, and readjusts the dc voltage input by the power generation component.
The power distribution output module 400 adopts a power distribution contactor, processes data according to the operation of the data controller 200, integrates the power generation unit connected with the direct current input end by adopting the power distribution contactor, and outputs qualified direct current voltage again through the direct current output end to drive the photovoltaic inverter 900 to start.
After the intelligent high-efficiency power distribution gain device of the photovoltaic power station is started, the inverter is started in advance or the stop working time of the inverter is delayed by detecting and operating the structure and the power generation condition of the power station, so that the requirement that the power driven by the photovoltaic inverter 900 is met is improved, and the maximum power generation benefit is achieved.
Through the high-efficient distribution gain device of above-mentioned intelligence can be in seamless connection in current photovoltaic power plant and future photovoltaic power plant, promote photovoltaic power plant equipment utilization and increase the generated energy.
The power generation unit also comprises a power generation unit for outputting energy in a chemical energy storage mode, and the power generation unit comprises a lead-acid storage battery pack power generation unit, a lithium battery pack power generation unit or a vanadium battery pack power generation unit.
The power generation unit also comprises other energy storage batteries, voltage is used for outputting energy for starting inverter equipment, the technical indexes of the battery energy are collected through analysis and calculation of the intelligent high-efficiency power distribution gain device, the power generation unit is reasonably combined and applied, the use requirements are met, the energy is output, the time of power generation and equipment use is prolonged, and the maximum efficiency of the equipment application is achieved.
Example two
A control method of an intelligent high-efficiency power distribution gain device of a photovoltaic power station adopts the intelligent high-efficiency power distribution gain device 800 of the photovoltaic power station in the first embodiment,
wherein the power generation unit adopts a photovoltaic square matrix 700, the photovoltaic square matrix 700 is formed by assembling a plurality of photovoltaic modules and is used for absorbing solar energy, converting the solar energy into direct current voltage and sending the direct current voltage to a power distribution gain device,
the method comprises the following steps:
s1, detecting and collecting the direct current voltage of the photovoltaic module in the photovoltaic square matrix 700 in real time;
s2, comparing the collected direct current voltage of the photovoltaic module with the direct current starting voltage required to be input by the photovoltaic inverter, sending a signal to the photovoltaic square matrix, and readjusting the input direct current voltage;
and S3, performing operation according to the starting voltage of the photovoltaic inverter, rearranging and combining the photovoltaic modules according to the operation data, then reintegrating the generated energy of the photovoltaic modules, adjusting the generated energy output by the photovoltaic modules, and then outputting qualified direct-current starting voltage again to drive the photovoltaic inverter to start.
The formula of the starting voltage of the photovoltaic inverter is as follows:
Uacstrar=K*Upvopen，
Upvopen=Upv1+Upv2+....Upvn，
wherein: uacstrar is the starting voltage of the photovoltaic inverter, K is the number of the photovoltaic square matrixes, Upwopenn is the direct current output voltage of the photovoltaic square matrixes, Upv1, Upv2 and Upvn are the direct current voltage of the photovoltaic modules.
Working condition one
In the early morning, when the sunlight rises or is slightly exposed, the sunlight illumination is weak, the illumination is insufficient, the voltage of a solar panel in a photovoltaic module rises from 0V, the intelligent high-efficiency power distribution gain device 800 of the photovoltaic power station is started, the photovoltaic inverter is started to output electric energy in the minimum voltage range of the panel,
the weak electric energy change of the photovoltaic module power generation unit is captured through the intelligent operation of internal functional components, the electric energy of a solar cell panel square matrix is collected and adjusted to the working voltage required by power generation equipment, the electric energy required by the power generation equipment is improved, the power generation units such as an inverter are started, and the qualified power frequency voltage is sent out.
Working condition two
In the sunset evening, the sunlight illumination begins to weaken, the working voltage of the solar cell panel matrix drops, the voltage which can start the inverter drops to the voltage which can not start the inverter, the power generation equipment such as the inverter stops working,
at this moment, the intelligent high-efficiency power distribution gain device 800 of the photovoltaic power station is started, the solar cell panel is adjusted to emit electric energy through intelligent operation of internal functional components, the voltage of the cell panel is enabled to continue to work for starting the inverter until the working voltage required by the power generation equipment is reached, the working requirement of the inversion power generation unit is met, the power generation time is prolonged, the power generation requirement cannot be met until the sunlight illumination, the voltage of the cell panel cannot work at all, and the device automatically stops working.
Three working conditions
When the solar energy battery plate is in overcast and rainy days, the output voltage of the solar energy battery plate square matrix can not meet the requirement of the working voltage of the inverter, the power generation system can not work normally,
at this moment, the intelligent and efficient power distribution gain device 800 of the photovoltaic power station is started, the solar cell panel is adjusted to emit electric energy through intelligent operation of internal functional components, the voltage of the cell panel continues to work for starting the inverter until working electric energy required by a power generation system is reached, and the inverter is started to enable the power station to normally work, so that the power generation time is prolonged.
Working condition four
When the sunlight illumination meets the normal power generation requirement, the intelligent high-efficiency power distribution gain device 800 of the photovoltaic power station automatically switches and exits the system, and is in a real-time detection stage.
The intelligent high-efficiency power distribution gain device of the photovoltaic power station works in at least two stages every day in a power station system, namely, the intelligent high-efficiency power distribution gain device works in the morning or in the evening and sometimes in rainy days, can be seamlessly connected in the existing photovoltaic power station and the future photovoltaic power station through the device, and improves the equipment utilization rate of the photovoltaic power station and increases the generated energy.
EXAMPLE III
A control method of an intelligent high-efficiency power distribution gain device of a photovoltaic power station is characterized in that the intelligent high-efficiency power distribution gain device 800 of the photovoltaic power station in the first embodiment is adopted, wherein a lead-acid storage battery pack is adopted as a power generation unit, and the working voltage required by an inverter is output through reasonable arrangement and combination of the intelligent high-efficiency power distribution gain device of the photovoltaic power station on the lead-acid storage battery pack, so that the power consumption of equipment is met, the service time of energy storage equipment is prolonged, and the maximum use efficiency of the.
Example four
A control method of an intelligent high-efficiency power distribution gain device of a photovoltaic power station is characterized in that the intelligent high-efficiency power distribution gain device 800 of the photovoltaic power station in the first embodiment is adopted, wherein a power generation unit adopts a lithium energy storage battery, the lithium energy storage battery is analyzed and calculated through the intelligent high-efficiency power distribution gain device of the photovoltaic power station, the energy technical indexes of the lithium energy storage battery are collected, the lithium energy storage battery is reasonably combined and applied, the use requirement is met, the energy is output, the time for power generation and equipment use is prolonged, and the maximum efficiency of equipment application is.
EXAMPLE five
A control method of an intelligent high-efficiency power distribution gain device of a photovoltaic power station is characterized in that the intelligent high-efficiency power distribution gain device 800 of the photovoltaic power station in the first embodiment is adopted, a power generation unit adopts a vanadium energy storage battery, the vanadium energy storage battery is analyzed and calculated through the intelligent high-efficiency power distribution gain device of the photovoltaic power station, the energy technical index of the vanadium energy storage battery is collected, the vanadium energy storage battery is reasonably combined and applied, the use requirement is met, the energy is output, the time of power generation and equipment use is prolonged, and the maximum efficiency of equipment application is achieved.
The utility model discloses photovoltaic power plant intelligence high-efficient distribution gain device beneficial effect is:
capturing weak light and low-light resources under the working condition that the illumination intensity cannot meet the normal work condition of a photoelectric power station system (such as early morning, evening or rainy days), starting the electric energy output of a power generation unit, reasonably distributing the electric energy, and prolonging the effective power generation time of a photovoltaic system;
by calculating the structure of the power station and the illumination condition, the inverter is started in advance by the power supply driven by the inverter equipment, and the working time of the inverter is delayed, so that the maximum power generation benefit is achieved;
can be in seamless connection in current photovoltaic power plant and future photovoltaic power plant, promote photovoltaic power plant equipment utilization and increase the generated energy.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all of which utilize the equivalent structure or equivalent flow transformation made by the content of the specification of the present invention, or directly or indirectly applied to other related technical fields, all included in the same way in the patent protection scope of the present invention.
Claims (8)
1. An intelligent high-efficiency power distribution gain device of a photovoltaic power station is characterized by comprising a direct current input end and a direct current output end, wherein the direct current input end is connected with a power generation unit, the direct current output end is connected with a photovoltaic inverter,
also comprises an auxiliary power supply, a data controller and a power distribution output module, wherein the auxiliary power supply is connected with the data controller and is used for supplying electric energy to the data controller,
the direct current input end is connected with the input end of the data controller through the power distribution output module, and the output end of the data controller is connected with the power distribution output module and outputs direct current voltage meeting the starting requirement of the photovoltaic inverter through the direct current output end.
2. The intelligent high-efficiency power distribution gain device for the photovoltaic power station as claimed in claim 1, wherein the power generation unit is a photovoltaic array formed by assembling a plurality of photovoltaic modules, and is used for absorbing solar energy, converting the solar energy into direct current voltage and transmitting the direct current voltage to the power distribution gain device.
3. The intelligent high-efficiency power distribution gain device for the photovoltaic power station as claimed in claim 1, wherein the auxiliary power supply can select power supply input within 380V of alternating current, 220V of alternating current or 1000V of direct current.
4. The intelligent high-efficiency power distribution gain device for the photovoltaic power station as claimed in claim 3, further comprising a surge arrester, wherein the surge arrester is connected with an auxiliary power supply wire for overvoltage protection.
5. The intelligent high-efficiency power distribution gain device for the photovoltaic power station as claimed in claim 2, wherein the data controller is used for detecting and collecting the direct-current voltage of the power generation unit in real time, performing operation processing according to the starting voltage of the photovoltaic inverter and then readjusting the power generation amount of the power generation unit.
6. The intelligent high-efficiency power distribution gain device for the photovoltaic power station as claimed in claim 5, wherein the data controller is one of P L C or a single chip microcomputer.
7. The intelligent high-efficiency power distribution gain device for the photovoltaic power station as claimed in claim 5, wherein the power distribution output module adopts a power distribution contactor, processes data according to the operation of the data controller, integrates the power generation unit connected with the DC input end by adopting the power distribution contactor, and outputs qualified DC voltage again through the DC output end to drive the photovoltaic inverter to start.
8. The intelligent high-efficiency power distribution gain device for the photovoltaic power station as claimed in claim 1, wherein the power generation unit further comprises a power generation unit for outputting energy in a chemical energy storage manner, and the power generation unit comprises a lead-acid storage battery pack power generation unit, a lithium battery pack power generation unit or a vanadium battery pack power generation unit.
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| CN110601262A (en) * | 2019-09-20 | 2019-12-20 | 孙荣武 | Intelligent efficient power distribution gain device of photovoltaic power station and control method thereof |
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| CN110601262A (en) * | 2019-09-20 | 2019-12-20 | 孙荣武 | Intelligent efficient power distribution gain device of photovoltaic power station and control method thereof |
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