CN212392676U - Distributed photovoltaic power generation grid-connected control device - Google Patents
Distributed photovoltaic power generation grid-connected control device Download PDFInfo
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- CN212392676U CN212392676U CN202020766762.3U CN202020766762U CN212392676U CN 212392676 U CN212392676 U CN 212392676U CN 202020766762 U CN202020766762 U CN 202020766762U CN 212392676 U CN212392676 U CN 212392676U
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- grid
- controller
- power generation
- control box
- distributed photovoltaic
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
- Y04S10/123—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation the energy generation units being or involving renewable energy sources
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a distributed photovoltaic power generation grid-connected control device, which comprises a control box, a power grid signal acquisition device arranged in the control box, an electric control change-over switch, a photovoltaic grid-connected inverter, a DC-DC boosting module, a storage battery and a controller, wherein the DC-DC boosting module is connected with the input end of the electric control change-over switch, two output ends of the electric control change-over switch are respectively connected with the photovoltaic grid-connected inverter and a charging control circuit, and the charging control circuit is connected with the storage battery; the power grid signal acquisition device comprises a signal conditioning circuit and an analog-to-digital conversion circuit which are electrically connected, wherein the signal conditioning circuit is electrically connected with the voltage and current signal acquisition device on the alternating current power grid; the electric control change-over switch, the photovoltaic grid-connected inverter and the analog-to-digital conversion circuit are respectively electrically connected with the controller. The utility model provides a distributed photovoltaic power generation controlling means that is incorporated into power networks, energy-concerving and environment-protective, the function is various, has the remote monitoring function, can realize charging and the automatic switch-over of incorporated into power networks two kinds of states.
Description
Technical Field
The utility model relates to a photovoltaic power generation technical field especially relates to a distributing type photovoltaic power generation controlling means that is incorporated into power networks.
Background
Solar photovoltaic power generation is based on a solar cell module, and utilizes the electronic characteristics of semiconductor materials to convert light energy into electric energy. The distributed photovoltaic grid-connected power generation system is characterized in that a solar photovoltaic power generation system is connected with a conventional power grid and commonly undertakes a power supply task, an inverter inverts direct current generated by the photovoltaic system into sine alternating current, the generated alternating current can be directly supplied to an alternating current load, and then the rest electric energy is input into the power grid or all the generated electric energy is directly merged into the power grid.
Because the power generation sources of different grid-connected users are different, if a large number of power supplies with uneven electric energy quality are connected into the power grid, the voltage fluctuation, voltage deviation and the like of the power grid can be caused, and therefore the voltage of the power grid fluctuates greatly on the rated voltage value, and therefore a distributed photovoltaic power generation grid-connected control device is needed to monitor the photovoltaic power generation system. The controller of the existing photovoltaic grid-connected system has various types, for example, a chinese patent application No. 200920286292.4 discloses a solar grid-connected controller, which includes a mounting base plate and a control box matched with the mounting base plate and accommodating a control module, wherein the control box is mounted on the mounting base plate through a fastener; the side surface of the control box body is provided with a network cable interface and a 458 interface; the solar grid-connected controller provided by the utility model has simple structure, convenience and practicability, and can be additionally provided with an external connecting component to improve the performance of the controller; on the other hand, the timely parameters of the controller can be more intuitively and clearly reflected; but the function is single, and the distributed photovoltaic power generation grid-connected system cannot be well adapted.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a distributing type photovoltaic power generation controlling means that is incorporated into power networks, energy-concerving and environment-protective, the function is various, has remote monitoring function, can realize charging and the automatic switch-over of incorporated into power networks two kinds of states.
In order to achieve the above object, the utility model provides a following scheme:
a distributed photovoltaic power generation grid-connected control device comprises: the solar photovoltaic grid-connected inverter comprises a control box, a power grid signal acquisition device, an electric control change-over switch, a photovoltaic grid-connected inverter, a DC-DC boosting module, a storage battery and a controller, wherein the power grid signal acquisition device, the electric control change-over switch, the photovoltaic grid-connected inverter, the DC-DC boosting module, the storage battery and the controller are arranged in the control box; the power grid signal acquisition device comprises a signal conditioning circuit and an analog-to-digital conversion circuit which are electrically connected, wherein the signal conditioning circuit is electrically connected with a voltage and current signal acquisition device on an alternating current power grid; the electric control change-over switch, the photovoltaic grid-connected inverter and the analog-to-digital conversion circuit are respectively electrically connected with the controller, and the controller receives data of the analog-to-digital conversion circuit, controls the electric control change-over switch and realizes the switching between the charging state and the grid-connected state.
Optionally, the distributed photovoltaic power generation grid-connected control device further comprises an environment monitoring device and a wireless communication module, the environment monitoring device and the wireless communication module are respectively electrically connected with the controller, the controller is connected with the remote monitoring terminal in a wireless communication mode through the wireless communication module, and the environment monitoring device is used for monitoring the state of the control box.
Optionally, the environment monitoring device comprises an acceleration sensor, a temperature and humidity sensor and an air speed sensor, the acceleration sensor and the air speed sensor are installed at the top end of the control box and used for monitoring vibration data and air speed data of the control box, the temperature and humidity sensor is arranged in the control box with the wireless communication module, and the temperature and humidity sensor is used for monitoring the temperature and humidity in the control box.
Optionally, an alarm device is arranged on the control box, the alarm device is electrically connected with the controller, and when monitoring data of the environment monitoring device exceeds a set threshold of the controller, the controller controls the alarm device to give an alarm.
Optionally, the alarm device is an audible and visual alarm.
Optionally, the bottom of the control box is rotatably connected with four support frames through hinges.
Optionally, a limiting structure is arranged on the hinge member, the limiting structure is used for limiting the position of the support frame, and a non-slip mat is arranged at the bottom end of the support frame.
According to the utility model provides a concrete embodiment, the utility model discloses a following technological effect: the utility model provides a distributed photovoltaic power generation grid-connected control device, electric wire netting signal acquisition device can transmit the electric quantity data of the alternating current electric wire netting that voltage current signal acquisition device gathered to the controller, the controller can be according to the automatically controlled change over switch of the demand control of alternating current electric wire netting, when the power consumption demand is big, put into operation photovoltaic grid-connected inverter, in order to reduce the user to the intake of electric wire netting electric quantity, when the power consumption is little, charge for the battery, effectively utilize the electric quantity that solar PV modules sent, it is more energy-concerving and environment-protective; the controller can control the alarm device to give an alarm, and can also be in communication connection with a remote monitoring terminal through the wireless communication module, so that the state of the control box is monitored remotely in real time, workers are informed to overhaul the control box in time, and the safety and reliability of the distributed photovoltaic power generation grid-connected control device are improved; the bottom of control box has four support frames through articulated elements rotatable coupling, and four support frames rotate around the articulated elements, can fold in the bottom of control box, when ground is moist or the state is not good, can expand four support frames, prop up the control box, are favorable to dampproofing heat dissipation more.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described 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 according to these drawings without inventive labor.
Fig. 1 is a schematic structural diagram of a distributed photovoltaic power generation grid-connected control device according to an embodiment of the present invention;
fig. 2 is a control schematic block diagram of the distributed photovoltaic power generation grid-connected control device according to the embodiment of the present invention;
FIG. 3 is a schematic view of an installation structure of a support frame according to an embodiment of the present invention;
description of reference numerals: 1. a controller; 2. an electrically controlled diverter switch; 3. a charge control circuit; 4. a storage battery; 5. a photovoltaic grid-connected inverter; 6. a grid-connected control circuit; 7. a power grid signal acquisition device; 8. a DC-DC boost module; 9. a solar photovoltaic module; 10. an articulation member; 11. a support frame; 12. a non-slip mat.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at providing a distributing type photovoltaic power generation controlling means that is incorporated into power networks, energy-concerving and environment-protective, the function is various, has remote monitoring function, can realize charging and the automatic switch-over of incorporated into power networks two kinds of states.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 1 to fig. 3, the embodiment of the utility model provides a distributed photovoltaic power generation grid-connected control device includes: the photovoltaic grid-connected inverter comprises a control box, a power grid signal acquisition device 7, an electric control change-over switch 2, a photovoltaic grid-connected inverter 5, a DC-DC boosting module 8, a storage battery 4 and a controller 1, wherein the power grid signal acquisition device 7, the electric control change-over switch 2, the photovoltaic grid-connected inverter 5, the DC-DC boosting module 8, the storage battery 4 and the controller 1 are arranged in the control box, the input end of the DC-DC boosting module 8 is connected with a solar photovoltaic assembly 9, the output end of the DC-DC boosting module 8 is connected with the input end of the electric control change-over switch 2, two output ends of the electric control change-over switch 2 are respectively connected with the photovoltaic grid; the power grid signal acquisition device 7 comprises a signal conditioning circuit and an analog-to-digital conversion circuit which are electrically connected, the signal conditioning circuit adopts a bipolar operational amplifier, and the signal conditioning circuit is electrically connected with a voltage and current signal acquisition device on an alternating current power grid; the controller 1 receives data of the analog-to-digital conversion circuit, controls the electronic control change-over switch 2, and realizes switching between charging and grid-connected states, the power grid signal acquisition device 7 transmits voltage and current signals of an alternating current power grid acquired by the voltage and current signal acquisition device to the controller 1, the controller 1 compares the power demand of the alternating current power grid with set standard power consumption, when the power demand is large, the photovoltaic grid-connected inverter 5 is put into operation to reduce the power consumption of a user on the power grid, and when the power consumption is small, the storage battery 4 is charged. The distributed photovoltaic power generation grid-connected control device further comprises an environment monitoring device and a wireless communication module, wherein the environment monitoring device and the wireless communication module are respectively and electrically connected with the controller 1, the controller 1 is in wireless communication connection with a remote monitoring terminal through the wireless communication module, the environment monitoring device is used for monitoring the state of the control box and comprises an acceleration sensor, a temperature and humidity sensor and an air speed sensor, the acceleration sensor and the air speed sensor are installed at the top end of the control box and used for monitoring vibration data and air speed data of the control box, the temperature and humidity sensor and the wireless communication module are arranged in the control box, and the temperature and humidity sensor is used for monitoring the temperature and humidity in the control box; the alarm device is arranged on the control box and electrically connected with the controller 1, monitoring data of the environment monitoring device exceed a set threshold value of the controller, the controller controls the alarm device to give an alarm, and the alarm device is an audible and visual alarm.
The bottom of control box has four support frames 11 through articulated elements 11 swivelling joint, be provided with limit structure on the articulated elements 10, limit structure is used for injecing the position of support frame 11, the bottom of support frame 11 is provided with slipmat 12, and the setting of table leg connecting piece under the collapsible table can be referred to in this department's articulated elements 11 setting.
The utility model provides a distributed photovoltaic power generation grid-connected control device, electric wire netting signal acquisition device can transmit the electric quantity data of the alternating current electric wire netting that voltage current signal acquisition device gathered to the controller, the controller can be according to the automatically controlled change over switch of the demand control of alternating current electric wire netting, when the power consumption demand is big, put into operation photovoltaic grid-connected inverter, in order to reduce the user to the intake of electric wire netting electric quantity, when the power consumption is little, charge for the battery, effectively utilize the electric quantity that solar PV modules sent, it is more energy-concerving and environment-protective; the controller can control the alarm device to give an alarm, and can also be in communication connection with a remote monitoring terminal through the wireless communication module, so that the state of the control box is monitored remotely in real time, workers are informed to overhaul the control box in time, and the safety and reliability of the distributed photovoltaic power generation grid-connected control device are improved; the bottom of control box has four support frames through articulated elements rotatable coupling, and four support frames rotate around the articulated elements, can fold in the bottom of control box, when ground is moist or the state is not good, can expand four support frames, prop up the control box, are favorable to dampproofing heat dissipation more.
The principle and the implementation of the present invention are explained herein by using specific examples, and the above description of the embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (7)
1. The utility model provides a distributed photovoltaic power generation grid-connected control device which characterized in that includes: the solar photovoltaic grid-connected inverter comprises a control box, a power grid signal acquisition device, an electric control change-over switch, a photovoltaic grid-connected inverter, a DC-DC boosting module, a storage battery and a controller, wherein the power grid signal acquisition device, the electric control change-over switch, the photovoltaic grid-connected inverter, the DC-DC boosting module, the storage battery and the controller are arranged in the control box; the power grid signal acquisition device comprises a signal conditioning circuit and an analog-to-digital conversion circuit which are electrically connected, wherein the signal conditioning circuit is electrically connected with a voltage and current signal acquisition device on an alternating current power grid; the electric control change-over switch, the photovoltaic grid-connected inverter and the analog-to-digital conversion circuit are respectively electrically connected with the controller, and the controller receives data of the analog-to-digital conversion circuit, controls the electric control change-over switch and realizes the switching between the charging state and the grid-connected state.
2. The distributed photovoltaic power generation grid-connected control device according to claim 1, further comprising an environment monitoring device and a wireless communication module, wherein the environment monitoring device and the wireless communication module are electrically connected with the controller respectively, the controller is in wireless communication connection with a remote monitoring terminal through the wireless communication module, and the environment monitoring device is used for monitoring the state of the control box.
3. The distributed photovoltaic power generation grid-connected control device according to claim 2, wherein the environment monitoring device comprises an acceleration sensor, a temperature and humidity sensor and an air velocity sensor, the acceleration sensor and the air velocity sensor are mounted at the top end of the control box and used for monitoring vibration data and air velocity data of the control box, the temperature and humidity sensor and the wireless communication module are arranged in the control box, and the temperature and humidity sensor is used for monitoring temperature and humidity in the control box.
4. The distributed photovoltaic power generation grid-connected control device according to claim 2, wherein an alarm device is arranged on the control box, the alarm device is electrically connected with the controller, and when monitoring data of the environment monitoring device exceeds a set threshold of the controller, the controller controls the alarm device to give an alarm.
5. The distributed photovoltaic power generation grid-connected control device according to claim 4, wherein the alarm device is an audible and visual alarm.
6. The distributed photovoltaic power generation grid-connected control device according to claim 1, wherein four support frames are rotatably connected to the bottom of the control box through hinges.
7. The distributed photovoltaic power generation grid-connected control device according to claim 6, wherein a limiting structure is arranged on the hinge, the limiting structure is used for limiting the position of the support frame, and a non-slip mat is arranged at the bottom end of the support frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020766762.3U CN212392676U (en) | 2020-05-11 | 2020-05-11 | Distributed photovoltaic power generation grid-connected control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020766762.3U CN212392676U (en) | 2020-05-11 | 2020-05-11 | Distributed photovoltaic power generation grid-connected control device |
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| Publication Number | Publication Date |
|---|---|
| CN212392676U true CN212392676U (en) | 2021-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020766762.3U Expired - Fee Related CN212392676U (en) | 2020-05-11 | 2020-05-11 | Distributed photovoltaic power generation grid-connected control device |
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| CN (1) | CN212392676U (en) |
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2020
- 2020-05-11 CN CN202020766762.3U patent/CN212392676U/en not_active Expired - Fee Related
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Granted publication date: 20210122 Termination date: 20210511 |