Photovoltaic power generation demonstration platform

Abstract

The utility model discloses a photovoltaic power generation demonstration platform, and belongs to the technical field of photovoltaic power generation. The photovoltaic power generation demonstration platform comprises a measurement conversion mechanism which is used for being electrically connected with at least one group of photovoltaic group strings so as to convert direct current generated by the photovoltaic group strings into alternating current and measure operation state data of the photovoltaic group strings; one side of the power distribution mechanism is electrically connected to the measurement conversion mechanism, and the other side of the power distribution mechanism is electrically connected to a power grid, an energy storage mechanism and a load mechanism; and the control mechanism is electrically connected to the measurement conversion mechanism and the power distribution mechanism, and the control mechanism is used for acquiring operation state data of the photovoltaic string and controlling the power distribution mechanism to distribute current to the power grid, the energy storage mechanism and the load mechanism based on the operation state data.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic power generation technology, and specifically to a photovoltaic power generation demonstration platform. Background Art

[0002] Photovoltaic strings are devices that convert solar energy into electrical energy and are usually installed outdoors. During the use of photovoltaic strings, it is necessary to measure the power, voltage, current and other parameters of the photovoltaic strings to understand the operation of the photovoltaic strings.

[0003] In the prior art, when conducting empirical tests on the power generation of photovoltaic strings, it is usually necessary to rely on fixed sites and fixed lines in the test power station to simulate the scene. The test process cannot restore the on-site scene 1:1, resulting in poor accuracy of the test results. Utility Model Content

[0004] The present application discloses a photovoltaic power generation demonstration platform to solve or at least partially solve the problem in the prior art that when conducting demonstration tests on photovoltaic string power generation, it is necessary to rely on fixed sites and fixed lines in the test power station to perform scene simulations, and it is impossible to conduct on-site testing, resulting in poor accuracy of test results.

[0005] In order to solve the above technical problems, this application is implemented as follows:

[0006] The present application discloses a photovoltaic power generation demonstration platform, which includes: a measurement and conversion mechanism, which is used to electrically connect at least one group of photovoltaic strings to convert the direct current generated by the photovoltaic strings into alternating current, and measure the operating status data of the photovoltaic strings; a distribution mechanism, one side of the distribution mechanism is electrically connected to the measurement and conversion mechanism, and the other side is electrically connected to a power grid, an energy storage mechanism and a load mechanism; a control mechanism, which is electrically connected to the measurement and conversion mechanism and the distribution mechanism, and the control mechanism is used to obtain the operating status data of the photovoltaic strings, and based on the operating status data, control the distribution mechanism to distribute current to the power grid, the energy storage mechanism and the load mechanism.

[0007] Optionally, the photovoltaic power generation demonstration platform further includes: a display mechanism, the display mechanism is electrically connected to the control mechanism, and the display mechanism is used to display the operating status data of the photovoltaic string.

[0008] Optionally, the measurement and conversion mechanism includes: an AC / DC measurement component, which is electrically connected to at least one group of the photovoltaic strings and is used to measure operating status data of the photovoltaic strings; and an inverter, which is electrically connected to the AC / DC measurement component and is used to convert DC power generated by the photovoltaic strings into AC power.

[0009] Optionally, the AC / DC measurement component includes at least one DC meter and at least one AC meter, wherein one side of one DC meter is electrically connected to at least one group of the photovoltaic strings, and the other side is electrically connected to the inverter; one side of one AC meter is electrically connected to the inverter, and the other side is electrically connected to the power distribution mechanism.

[0010] Optionally, the power distribution mechanism includes: a power distribution control component and a switching component, wherein the control mechanism is electrically connected to the measuring and conversion mechanism, the power grid, the energy storage mechanism and the load mechanism, and the control mechanism is used to obtain operating status data of the photovoltaic string, the power grid, the energy storage mechanism and the load mechanism; one side of the power distribution control component is electrically connected to the measuring and conversion mechanism, and the other side is electrically connected to the switching component, and the switching component is electrically connected to the power grid, the energy storage mechanism and the load mechanism; the control mechanism is electrically connected to the switching component, and the control mechanism is used to control the on and off of the switching component based on the operating status data to change the flow direction of the photovoltaic string current.

[0011] Optionally, the power distribution control component also includes a measuring device, which includes a first measuring device and a second measuring device; one side of the first measuring device is electrically connected to the switching device, and the other side is electrically connected to the power grid, for measuring the operating parameters of the power grid; one side of the second measuring device is electrically connected to the switching device, and the other side is electrically connected to the load mechanism, for measuring the operating parameters of the load mechanism.

[0012] Optionally, the load mechanism includes AC power devices, UPS devices and communication power supply devices, wherein the AC power devices are electrically connected to the power distribution control component; the UPS device is electrically connected to the power distribution control component, and the UPS device is used to supply power to the power modules in the photovoltaic power generation demonstration platform when the photovoltaic power generation demonstration platform is powered off; the communication power supply device is electrically connected to the UPS device, and the communication power supply device is used to convert the AC power in the UPS device into DC power to supply power to the power modules in the photovoltaic power generation demonstration platform.

[0013] Optionally, the photovoltaic power generation demonstration platform further includes: a base, on which a forklift slot is provided; a cabinet, in which the power distribution mechanism and the control mechanism are both provided, and the measurement conversion mechanism is provided outside the cabinet, and the cabinet is snap-connected to the base.

[0014] Optionally, at least two first clamping parts are provided at an end of the cabinet close to the base, and at least two second clamping parts are provided at an end of the base close to the cabinet, and each of the first clamping parts is clamped in one of the second clamping parts.

[0015] Optionally, at least two hoisting openings are provided at an end of the cabinet away from the base, and the hoisting openings are used to hoist the cabinet.

[0016] Optionally, the base includes a supporting foot, the supporting foot is connected to the end of the base away from the cabinet, and the height of the supporting foot is adjustable; the supporting foot includes a plurality of supporting feet, and the plurality of supporting feet are arranged at intervals.

[0017] The present application discloses a photovoltaic power generation demonstration platform, including a measurement and conversion mechanism, the measurement and conversion mechanism is used to electrically connect at least one group of photovoltaic strings to convert the direct current generated by the photovoltaic strings into alternating current, and measure the operating status data of the photovoltaic strings; a distribution mechanism, one side of the distribution mechanism is electrically connected to the measurement and conversion mechanism, and the other side is electrically connected to the power grid, the energy storage mechanism and the load mechanism; the control mechanism is electrically connected to the measurement and conversion mechanism and the distribution mechanism, the control mechanism is used to obtain the operating status data of the photovoltaic strings, and based on the operating status data, control the distribution mechanism to distribute current to the power grid, the energy storage mechanism and the load mechanism.

[0018] The photovoltaic power generation demonstration platform disclosed in the present application electrically connects the measurement conversion mechanism to the photovoltaic string, converts the direct current generated by the photovoltaic string into alternating current through the measurement conversion mechanism, and measures the operating status data of the photovoltaic string. One side of the distribution mechanism is electrically connected to the measurement conversion mechanism, and the other side is electrically connected to the power grid, the energy storage mechanism and the load mechanism, and the control mechanism is electrically connected to the measurement conversion mechanism and the distribution mechanism, so as to obtain the operating status data of the photovoltaic string through the control mechanism, and based on the operating status data, control the distribution mechanism to distribute the current to the power grid, the energy storage mechanism and the load mechanism. The photovoltaic power generation demonstration platform disclosed in the present application does not need to rely on fixed sites and fixed lines in the test power station to simulate the power generation scene of the photovoltaic string, and can measure the operating status data of the photovoltaic string in real time, so that the measurement results of the operating status data of the photovoltaic string are more accurate. Furthermore, the photovoltaic power generation demonstration platform can be moved in conjunction with the installation area of ​​the photovoltaic string to facilitate real-time monitoring of the operating status data of the photovoltaic string. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram showing the structure of the photovoltaic power generation demonstration platform described in the embodiments of the present application;

[0020] Figure 2A schematic diagram showing the principle of the photovoltaic power generation demonstration platform described in the embodiments of the present application;

[0021] Figure 3 A schematic diagram showing the principle of the AC / DC measurement component described in the embodiment of the present application;

[0022] Figure 4 A schematic diagram showing the principle of the power distribution control component described in the embodiment of the present application;

[0023] Figure 5 A schematic diagram showing a display mechanism described in an embodiment of the present application;

[0024] Figure 6 A schematic diagram showing the external structure of the photovoltaic power generation demonstration platform described in the embodiment of the present application;

[0025] Figure 7 It represents a top view of the cabinet described in the embodiment of the present application;

[0026] Figure 8 A partial enlarged view AA of the cabinet described in the embodiment of the present application is shown;

[0027] Fig. 9 A schematic diagram showing the structure of the base described in the embodiment of the present application.

[0028] Reference numerals:

[0029] 10: measurement conversion mechanism; 11: AC / DC measurement component; 111: DC measurement component; 112: AC measurement component; 12: inverter;

[0030] 20: power distribution mechanism; 21: power distribution control component; 211: first metering element; 212: second metering element; 22: switching element;

[0031] 30: Control mechanism;

[0032] 40: Display mechanism;

[0033] 50: Power grid;

[0034] 60: Energy storage mechanism;

[0035] 70: load mechanism; 71: communication power supply component; 72: UPS component;

[0036] 80: cabinet body; 81: lifting port;

[0037] 90: base; 91: forklift slot; 92: second clamping portion; 93: supporting foot;

[0038] 100: Photovoltaic strings. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the fixed scope of the utility model.

[0040] It should be understood that the references to "one embodiment" or "an embodiment" throughout the specification mean that the specific features, structures, or characteristics associated with the embodiment are included in at least one embodiment of the present invention. Therefore, the references to "in one embodiment" or "in an embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0041] Reference Figure 1 , showing a schematic diagram of the structure of the photovoltaic power generation demonstration platform described in the embodiment of the present application; referring to Figure 2 , showing a schematic diagram of the principle of the photovoltaic power generation demonstration platform described in the embodiment of the present application; referring to Figure 3 , showing a schematic diagram of the principle of the AC and DC measurement components described in the embodiment of the present application; referring to Figure 4 , showing a schematic diagram of the principle of the power distribution control component described in the embodiment of the present application; referring to Figure 5 , showing a schematic diagram of the display mechanism described in the embodiment of the present application; referring to Figure 6 , showing the external structure schematic diagram of the photovoltaic power generation demonstration platform described in the embodiment of the present application; referring to Figure 7 , showing a top view of the cabinet in the embodiment of the present application; referring to Figure 8 , showing a partial enlarged view AA of the cabinet in the embodiment of the present application; referring to Fig. 9 , showing a schematic structural diagram of the base described in an embodiment of the present application.

[0042] like Figures 1 to 9 As shown, the embodiment of the present application discloses a photovoltaic power generation demonstration platform including: a measuring conversion mechanism 10, the measuring conversion mechanism 10 is used to electrically connect at least one group of photovoltaic strings 100 to convert the direct current generated by the photovoltaic strings 100 into alternating current, and measure the operating status data of the photovoltaic strings 100; a distribution mechanism 20, one side of the distribution mechanism 20 is electrically connected to the measuring conversion mechanism 10, and the other side is electrically connected to the power grid 50, the energy storage mechanism 60 and the load mechanism 70; a control mechanism 30, the control mechanism 30 is electrically connected to the measuring conversion mechanism 10 and the distribution mechanism 20, the control mechanism 30 is used to obtain the operating status data of the photovoltaic strings 100, and based on the operating status data, control the distribution mechanism 20 to distribute the current to the power grid 50, the energy storage mechanism 60 and the load mechanism 70.

[0043] The embodiment of the present application discloses a photovoltaic power generation demonstration platform, which can detect the power, voltage, current and other operating status data of the photovoltaic string 100 in real time during the use of the photovoltaic string, without relying on the fixed site and fixed line in the test power station to simulate the power generation scene of the photovoltaic string 100, so that the measurement results of the operating status data of the photovoltaic string 100 are more accurate. Furthermore, the photovoltaic power generation demonstration platform can also obtain the operating status data of the power grid 50, the energy storage mechanism 60, and the load mechanism 70, and based on the operating status data, change the flow direction of the photovoltaic string 100 current so that the current can flow into the power grid 50, the energy storage mechanism 60 and the load mechanism 70.

[0044] like Figure 1 and Figure 2 As shown, the photovoltaic power generation demonstration platform in the embodiment of the present application includes a measurement conversion mechanism 10, a power distribution mechanism 20 and a control mechanism 30. Among them, the measurement conversion mechanism 10 is electrically connected to at least one group of photovoltaic strings 100, so as to convert the direct current generated by the photovoltaic strings 100 into alternating current through the measurement conversion mechanism 10, and measure the operating status data of the photovoltaic strings 100 through the measurement conversion mechanism 10.

[0045] It should be noted that if Figure 2 As shown, the measurement conversion mechanism 10 in the embodiment of the present application includes an inverter 12, so as to convert the direct current generated by the photovoltaic string 100 into alternating current through the inverter 12, so as to facilitate the transmission of current.

[0046] like Figure 2 As shown, the measurement conversion mechanism 10 in the embodiment of the present application also includes a DC metering element 111 and an AC metering element 112. The DC metering element 111 is electrically connected to the photovoltaic string 100 so that the current generated by the photovoltaic string 100 flows into the DC metering element 111, and the operating status data of the DC power generated by the photovoltaic string 100 is measured by the DC metering element 111. The inverter 12 is electrically connected to the DC metering element 111, and the DC power is converted into AC power by the inverter 12. The AC metering element 112 is electrically connected to the inverter 12, so that the operating status data of the AC power is measured by the AC metering element 112.

[0047] It should be noted that the operating status data in the embodiment of the present application includes but is not limited to the power of the photovoltaic string 100, the voltage of the photovoltaic string 100, the current of the photovoltaic string 100, the number of photovoltaic strings 100, and the daily cumulative power generation of DC power. The output power of the inverter 12, the output voltage of the inverter 12, the output current of the inverter 12, the efficiency of the inverter 12, the daily average efficiency, and the daily cumulative power generation of AC.

[0048] In the embodiment of the present application, there is no restriction on the data type specifically included in the running status data. In actual application, the technicians can set it according to the requirements.

[0049] like Figure 2 As shown, in the embodiment of the present application, one side of the power distribution mechanism 20 is electrically connected to the measuring conversion mechanism 10, and the other side is electrically connected to the power grid 50, the energy storage mechanism 60 and the load mechanism 70. The control mechanism 30 is electrically connected to the measuring conversion mechanism 10 and the power distribution mechanism 20, so as to obtain the operating status data of the photovoltaic string 100 through the control mechanism 30, and based on the operating status data, control the power distribution mechanism 20 to distribute the current to the power grid 50, the energy storage mechanism 60 and the load mechanism 70, so as to transmit or store the current generated by the photovoltaic string 100.

[0050] The control mechanism 30 in the embodiment of the present application can also be electrically connected to the power grid 50, the energy storage mechanism 60 and the load mechanism 70 to obtain the operating status data of the power grid 50, the energy storage mechanism 60 and the load mechanism 70, and control the distribution mechanism 20 to distribute the current to the power grid 50, the energy storage mechanism 60 and the load mechanism 70 according to the operating status data and the operating status data of the photovoltaic string 100.

[0051] It should be noted that the above are only individual examples of the functions of the control mechanism 30 and are not intended to limit the functions of the control mechanism 30. In actual applications, technicians can set the functions of the control mechanism 30 as needed so that the control mechanism 30 can be better applied to the photovoltaic power generation demonstration platform.

[0052] The photovoltaic power generation demonstration platform disclosed in the embodiment of the present application electrically connects the measurement conversion mechanism 10 to the photovoltaic string 100, converts the direct current generated by the photovoltaic string 10 into alternating current through the measurement conversion mechanism 10, and measures the operating status data of the photovoltaic string 100. One side of the distribution mechanism 20 is electrically connected to the measurement conversion mechanism 10, and the other side is electrically connected to the power grid 50, the energy storage mechanism 60 and the load mechanism 70, and the control mechanism 30 is electrically connected to the measurement conversion mechanism 10 and the distribution mechanism 20, so as to obtain the operating status data of the photovoltaic string 100 through the control mechanism 30, and based on the operating status data, control the distribution mechanism 20 to distribute the current to the power grid 50, the energy storage mechanism 60 and the load mechanism 70. The photovoltaic power generation demonstration platform disclosed in the present application does not need to rely on fixed sites and fixed lines in the test power station to simulate the power generation scene of the photovoltaic string 100, and can measure the operating status data of the photovoltaic string 100 in real time, so that the measurement results of the operating status data of the photovoltaic string 100 are more accurate. Furthermore, the photovoltaic power generation demonstration platform can be moved in coordination with the installation area of ​​the photovoltaic string 100 to facilitate real-time monitoring of the operating status data of the photovoltaic string 100 .

[0053] Alternatively, if Figure 2 and Figure 5 As shown, the photovoltaic power generation demonstration platform disclosed in the embodiment of the present application further includes: a display mechanism 40 , the display mechanism 40 is electrically connected to the control mechanism 30 , and the display mechanism 40 is used to display the operating status data of the photovoltaic string 100 .

[0054] like Figure 2 As shown, the display mechanism 40 in the embodiment of the present application is electrically connected to the control mechanism 30. Among them, the control mechanism 30 is electrically connected to the measurement and conversion mechanism 10 and the distribution mechanism 20, so as to obtain the operating status data of the photovoltaic string 100 through the control mechanism 30. Further, the control mechanism 30 is electrically connected to the power grid 50, the energy storage mechanism 60 and the load mechanism 70, so as to obtain the operating status data of the power grid 50, the energy storage mechanism 60 and the load mechanism 70 through the control mechanism 30. The control mechanism 30 can calculate, store and issue instructions for the operating status data of the photovoltaic string 100 and the operating status data of the power grid 50, the energy storage mechanism 60 and the load mechanism 70, and display them through the display mechanism 40.

[0055] like Figure 5 As shown, the display mechanism 40 can display the operating status data of the photovoltaic string 100, and can also display the operating status data of the power grid 50, the energy storage mechanism 60 and the load mechanism 70. At the same time, the display mechanism 40 can also perform operation control.

[0056] Of course, the above is only an example of the function of the display mechanism 40, and is not intended to limit the function of the display mechanism 40. In actual applications, technicians can also set the function of the display mechanism 40 as needed.

[0057] Alternatively, if Figure 1 and Figure 2 As shown, the measurement conversion mechanism 10 in the embodiment of the present application includes: an AC / DC measurement component 11, the AC / DC measurement component 11 is electrically connected to at least one group of photovoltaic strings 100, and the AC / DC measurement component 11 is used to measure the operating status data of the photovoltaic strings 100; an inverter 12, the inverter 12 is electrically connected to the AC / DC measurement component 11, and the inverter 12 is used to convert the DC power generated by the photovoltaic strings 100 into AC power.

[0058] like Figure 2 As shown, the measurement conversion mechanism 10 in the embodiment of the present application includes an AC / DC measurement component 11 and an inverter 12. The AC / DC measurement component 11 is electrically connected to at least one group of photovoltaic strings 100 to measure the operating status data of the photovoltaic strings 100 through the AC / DC measurement component 11. The inverter 12 is electrically connected to the AC / DC measurement component 11, and the DC power generated by the photovoltaic strings 100 is converted into AC power through the inverter 12 to facilitate the transmission of current.

[0059] The inverter 12 in the embodiment of the present application may be a micro inverter or a string inverter. In the embodiment of the application, there are no excessive restrictions on the specific type of the inverter 12. In actual applications, technicians can select a suitable inverter as needed.

[0060] Specifically, Figure 2 As shown, the AC / DC measurement component 11 includes a DC metering element 111 and an AC metering element 112, wherein one side of the DC metering element 111 is electrically connected to at least one group of photovoltaic strings 100, and the other side is electrically connected to the inverter 12; one side of the AC metering element 112 is electrically connected to the inverter 12, and the other side is electrically connected to the distribution mechanism 20.

[0061] like Figure 2 As shown, the AC / DC measurement component 11 of the embodiment of the present application includes a DC metering element 111 and an AC metering element 112. Among them, the DC metering element 111 is electrically connected to the photovoltaic string 100 so that the current generated by the photovoltaic string 100 flows into the DC metering element 111, and the operating status data of the DC power generated by the photovoltaic string 100 is measured by the DC metering element 111. The inverter 12 is electrically connected to the DC metering element 111, and the DC power is converted into AC power by the inverter 12. The AC metering element 112 is electrically connected to the inverter 12, so that the operating status data of the AC power is measured by the AC metering element 112. The distribution mechanism 20 is electrically connected to the AC metering element 112, so that the AC power is transmitted to the power grid 50, the energy storage mechanism 60 and the load mechanism 70 through the distribution mechanism 20, and the electric energy generated by the photovoltaic string 100 is distributed.

[0062] Alternatively, if Figure 3 As shown, the DC metering element 111 and the AC metering element 112 in the embodiment of the present application each include at least one, and the AC metering element 112 and at least one DC metering element 111 are correspondingly arranged; the inverter 12 also includes at least one, and the inverter 12 and the AC metering element 112 are correspondingly arranged.

[0063] like Figure 3As shown, the AC / DC measurement component 11 in the embodiment of the present application is provided with a plurality of DC input ports of the photovoltaic strings 100, one side of a fuse CL-FU is electrically connected to a DC input port, and the other side is electrically connected to a DC metering element 111, so as to protect the circuit through the fuse CL-FU, and measure the operating parameters of the DC power generated by the photovoltaic strings 100 through the DC metering element 111. Then, the input port of an inverter 12 is connected to the DC metering element 111, and the DC power generated by the photovoltaic strings 100 is converted into AC power through the inverter 12. Next, an AC metering element 112 is electrically connected to the output port of the inverter 12, and the operating parameters of the AC power are measured through the AC metering element 112. Then, the distribution mechanism 20 is electrically connected to the AC metering element 112, so as to transmit the AC power to the power grid 50, the energy storage mechanism 60 and the load mechanism 70 through the distribution mechanism 20, and distribute the electric energy generated by the photovoltaic strings 100.

[0064] Exemplarily, the DC metering element 111 in the embodiment of the present application may include multiple DC metering elements 111, and the AC metering element 112 includes one AC metering element 112, and the AC metering element 112 is set correspondingly to the multiple DC metering elements 111. The DC metering element 111 and the AC metering element 112 may also each include one, and the DC metering element 111 and the corresponding AC metering element 112 are set correspondingly. Of course, the DC metering element 111 and the AC metering element 112 may also each include multiple, and each AC metering element 112 is set correspondingly to at least one DC metering element 111.

[0065] In addition, the inverter 12 may include multiple types. Specifically, the inverter 12 may be a micro inverter, or a string inverter, etc. In the embodiment of the present application, there is no limitation on the specific type of the inverter 12. In actual applications, technicians may select a suitable inverter 12 as needed.

[0066] When the inverter 12 is a micro inverter, the operating parameters of the AC power are measured by one set of AC metering elements 112. When the inverter 12 is a string inverter, the operating parameters of the AC power are measured by another set of AC metering elements 112.

[0067] In addition, in the embodiment of the present application, a circuit breaker may be provided between the AC metering component 112 and the power distribution mechanism 20 to control the on / off state between the AC metering component 112 and the power distribution mechanism 20 through the circuit breaker.

[0068] Alternatively, if Figure 2As shown, the power distribution mechanism 20 in the embodiment of the present application includes: a power distribution control component 21 and a switching component 22, wherein the control mechanism 30 is electrically connected to the measuring and conversion mechanism 10, the power grid 50, the energy storage mechanism 60 and the load mechanism 70, and the control mechanism 30 is used to obtain the operating status data of the photovoltaic string 100, the power grid 50, the energy storage mechanism 60 and the load mechanism 70; one side of the power distribution control component 21 is electrically connected to the measuring and conversion mechanism 10, and the other side is electrically connected to the switching component 22, and the switching component 22 is electrically connected to the power grid 50, the energy storage mechanism 60 and the load mechanism 70; the control mechanism 30 is electrically connected to the switching component 22, and the control mechanism 30 is used to control the switching component 22 to be turned on and off based on the operating status data to change the flow direction of the current of the photovoltaic string 100.

[0069] The control mechanism 30 in the embodiment of the present application is electrically connected to the measuring conversion mechanism 10 to obtain the operating state parameters of the photovoltaic string 100. In addition, the control mechanism 30 is also electrically connected to the power grid 50, the energy storage mechanism 60 and the load mechanism 70 to obtain the operating state parameters of the power grid 50, the energy storage mechanism 60 and the load mechanism 70. The control mechanism 30 can perform calculations based on the operating state data of the photovoltaic string 100 and the operating state data of the power grid 50, the energy storage mechanism 60 and the load mechanism 70, and control the switching element 22 to change the flow direction of the current, transmit the current to the power grid 50 or the load mechanism 70, and / or store the current in the energy storage mechanism 60.

[0070] like Figure 2 As shown, the power distribution mechanism 20 in the embodiment of the present application includes: a power distribution control component 21 and a switching component 22. Among them, one side of the power distribution control component 21 is electrically connected to the measurement and conversion mechanism 10, and the other side is electrically connected to the switching component 22, and the switching component 22 is electrically connected to the power grid 50, the energy storage mechanism 60 and the load mechanism 70. Further, the control mechanism 30 is electrically connected to the switching component 22. The control mechanism 30 can perform calculations based on the operating status data of the photovoltaic string 100 and the operating status data of the power grid 50, the energy storage mechanism 60 and the load mechanism 70, and control the on-off between the switching component 22 and the power grid 50, the energy storage mechanism 60 and the load mechanism 70 based on the calculation results, thereby changing the direction of the current flow, so that the current is transmitted to the power grid 50 or the load mechanism 70, and / or, the current is stored in the energy storage mechanism 60.

[0071] Specifically, Figure 2As shown, in the embodiment of the present application, the AC line of the photovoltaic string 100 and the load mechanism 70 can be connected through the power distribution control component 21, and then connected to the Load side of the switch 22. The grid 50 is connected to the Grid side of the switch 22, and the energy storage mechanism 60 is connected to the other interface of the switch 22. Two bidirectional switches are arranged in the switch 22, and the flow direction of the current is controlled by turning on and off the two bidirectional switches, so that the current flows into the grid 50, the energy storage mechanism 60 and the load mechanism 70.

[0072] Alternatively, if Figure 2 and Figure 4 As shown, the power distribution control component 21 in the embodiment of the present application also includes a metering member, which includes a first metering member 211 and a second metering member 212. One side of the first metering member 211 is electrically connected to the switching member 22, and the other side is electrically connected to the power grid 50, and is used to measure the operating parameters of the power grid 50; one side of the second metering member 212 is electrically connected to the switching member 22, and the other side is electrically connected to the load mechanism 70, and is used to measure the operating parameters of the power grid.

[0073] In the present application embodiment, Figure 4 As shown, the power grid 50 can be led out from the power distribution access point of the power grid, connected to the first metering element 211 (PD1) in the power distribution control component 21, and then led out from the first metering element 211 through the port and connected to the Grid side of the switching element 22, so that the power grid 50 is connected to the switching element 22. And the operating status data of the power grid 50 can be measured by the first metering element 211.

[0074] Specifically, Figure 4 As shown, the power distribution control component 21 in the embodiment of the present application is provided with an input port of a three-phase five-wire of the power grid 50, which is controlled on and off by a group of circuit breaker QF1, protected by a group of lightning protection modules SPD and fuse modules FU, and the operating status data is measured by the first metering component 211, and then connected to the Grid side of the switching component 22.

[0075] In addition, the power distribution control component 21 is also provided with a three-phase three-wire port connected to the Load side of the switching component 22. A three-phase five-wire port connected to the output side of the AC / DC measurement component 11 is provided, which is connected to a group of circuit breakers QF2 in the power distribution control component 21 for on-off control. The three phases of these two groups of ports are connected, and one phase of the three phases is taken on the connecting line to form a single-phase AC with the common N phase as the output of the load mechanism 70. The output of the load mechanism 70 measures the operating status data through the second metering component 212 (PD2), and is divided into multiple paths after being on-off controlled by a circuit breaker QF3. One of the paths is controlled on and off by the circuit breaker QF4, and is used to power the non-communication and non-security AC power modules of the demonstration platform. One of the paths is controlled on and off by the circuit breaker QF5, and then connected to the input port of the UPS component 72, and is used to power the UPS component 72. The demonstration platform is also provided with an interface connected to the output end of the UPS device 72, which is distributed into multiple routes after being controlled by a circuit breaker QF6. One route is used to supply power to the communication AC power module in the demonstration platform, and the other route is used as a backup power output.

[0076] In addition, if Figure 4 As shown, one side of the second measuring element 212 (PD2) can be electrically connected to the Load side of the switching element 22, and the other side of the second measuring element 212 (PD2) can be electrically connected to the load mechanism 70 to measure the operating status data of the load mechanism 70 through the second measuring element 212.

[0077] Alternatively, if Figure 2 As shown, the load mechanism 70 in the embodiment of the present application includes an AC power device, a communication power supply component 71 and a UPS component 72, wherein the AC power device is electrically connected to the power distribution control component 21; the UPS component 72 is electrically connected to the power distribution control component, and when the photovoltaic power generation demonstration platform is powered off, the UPS component 72 supplies power to the power modules in the photovoltaic power generation demonstration platform; the communication power supply component 71 is electrically connected to the UPS component 72, and the communication power supply component 71 is used to convert the AC power in the UPS component 72 into DC power to supply power to the power modules in the photovoltaic power generation demonstration platform.

[0078] like Figure 2 As shown, the load mechanism 70 in the embodiment of the present application includes AC power devices, communication power supply components 71 and UPS components 72. Among them, the AC power devices are electrically connected to the power distribution control component 21, and the AC power in the power distribution control component 21 can directly power the AC power devices.

[0079] The UPS component 72 in the embodiment of the present application is electrically connected to the power distribution control component 21, and the AC power in the power distribution control component 21 can flow into the UPS component 72, so that when the photovoltaic power generation demonstration platform is powered off, the power consumption module in the photovoltaic power generation demonstration platform can be powered by the UPS component 72. One side of the communication power supply component 71 is electrically connected to the UPS component 72, and the other side is electrically connected to the power consumption module of the photovoltaic power generation demonstration platform, so that the AC power in the UPS component 72 is converted into 24V DC power through the AC220V / DC24V in the communication power supply component 71, and the DC power consumption module of the photovoltaic power generation demonstration platform is powered.

[0080] It should be noted that the power-consuming modules in the embodiment of the present application include but are not limited to communication modules and security modules in the cabinet 80 .

[0081] Alternatively, if Figures 6 to 9 As shown, the photovoltaic power generation demonstration platform in the embodiment of the present application also includes: a base 90, on which a forklift slot 91 is arranged; a cabinet 80, in which the power distribution mechanism 20 and the control mechanism 30 are both arranged, and the measurement and conversion mechanism 10 is arranged outside the cabinet 80, and the cabinet 80 is snap-connected to the base 90.

[0082] like Figures 6 to 9 As shown, the photovoltaic power generation demonstration platform disclosed in the present application includes a base 90 and a cabinet 80. The base 90 is provided with a forklift slot 91 to facilitate forklift transportation of the photovoltaic power generation demonstration platform. The cabinet 80 is snap-connected to the base 90 to facilitate installation of the cabinet 80.

[0083] Based on the design principles of shortest lines and outdoor wiring, in the embodiment of the present application, the power distribution mechanism 20 and the control mechanism 30 are arranged in the cabinet 80, and the measurement conversion mechanism 10 is arranged outside the cabinet 80.

[0084] Alternatively, if Figure 8 As shown, in the embodiment of the present application, at least two first clamping portions are provided at the end of the cabinet 80 close to the base 90, and at least two second clamping portions 92 are provided at the end of the base 90 close to the cabinet 80, and each first clamping portion is clamped in a second clamping portion 92, thereby installing the cabinet 80 on the base 90.

[0085] For example, the first clamping portion can be set as a groove, and the second clamping portion can be set as a protrusion, and the groove is clamped to the protrusion, so that the cabinet 80 is installed on the base 90. There can be multiple grooves, and the multiple grooves are arranged at intervals at the end of the cabinet 80 close to the base 90. There can also be multiple protrusions, and the multiple protrusions are arranged at intervals at the end of the base 90 close to the cabinet 80, and each protrusion is arranged opposite to a groove.

[0086] Of course, in the embodiment of the present application, there are no excessive restrictions on the specific structures of the first clamping portion and the second clamping portion 92. In actual applications, technicians can set them as needed.

[0087] Alternatively, if Figure 7 and Figure 8 As shown, at least two hoisting openings 81 are provided at the end of the cabinet 80 away from the base 90 in the embodiment of the present application, and the hoisting openings 81 are used for hoisting the cabinet 80 .

[0088] like Figure 7 and Figure 8 As shown, the cabinet 80 in the embodiment of the present application is provided with a hoisting opening 81 , which is arranged at the end of the cabinet 80 away from the base 90 . The cabinet 80 can be hoisted through the hoisting opening 81 to facilitate the transportation of the cabinet 80 .

[0089] There may be two or more lifting openings 81. For example, there may be four lifting openings 81, and the four lifting openings 81 are spaced apart at the end of the cabinet 80 away from the base 90, so that the cabinet 80 can be lifted stably through the four lifting openings 81.

[0090] Alternatively, if Figure 6 and Fig. 9 As shown, the base 90 in the embodiment of the present application includes a supporting foot 93, which is connected to the end of the base 90 away from the cabinet 80, and the height of the supporting foot 93 is adjustable; the supporting foot 93 includes a plurality of supporting feet 93, and the plurality of supporting feet 93 are arranged at intervals.

[0091] like Figure 6 and Fig. 9 As shown, along the height direction of the cabinet 80, a plurality of support legs 93 are adjustably connected to the end of the base 90 away from the cabinet 80, and the plurality of support legs 93 are arranged at intervals. Thus, the horizontality of the base 90 can be adjusted by the plurality of support legs 93, making the photovoltaic power generation demonstration platform more stable.

[0092] For example, a mounting hole can be set at the end of the base 90 away from the cabinet 80, and the mounting hole can be a threaded hole. The support foot 93 is set as a nut-like structure, and the support foot 93 is installed in the mounting hole. By adjusting the depth of the support foot 93 extending into the mounting hole, the height of the support foot 93 can be adjusted. Of course, the above is only an individual example of the embodiment of the present application and is not intended to be a limitation of the present application. Any solution that can connect the support foot 93 to the base 90 with adjustable height along the direction in which the cabinet 80 and the base 90 are spaced apart belongs to the protection scope of the present application.

[0093] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0094] Although the optional embodiments of the utility model embodiments have been described, those skilled in the art, once knowing the basic creative concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including optional embodiments and all changes and modifications falling within the scope of the utility model embodiments.

[0095] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity from another entity, and do not necessarily require or imply any such actual relationship or order between these entities. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that an article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such article or terminal device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the article or terminal device including the elements.

[0096] The technical solution provided by the utility model is introduced in detail above. Specific examples are used in this article to illustrate the principle and implementation method of the utility model. At the same time, for general technicians in this field, according to the principle and implementation method of the utility model, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the utility model.

Claims

1. A photovoltaic power generation demonstration platform, characterized in that: include: A measuring and converting mechanism, the measuring and converting mechanism is used to electrically connect at least one set of photovoltaic strings to convert the direct current generated by the photovoltaic strings into alternating current and measure the operating status data of the photovoltaic strings; A power distribution mechanism, one side of which is electrically connected to the measurement conversion mechanism, and the other side of which is electrically connected to the power grid, the energy storage mechanism and the load mechanism; A control mechanism, wherein the control mechanism is electrically connected to the measurement and conversion mechanism and the power distribution mechanism, and is used to obtain operating status data of the photovoltaic string, and based on the operating status data, control the power distribution mechanism to distribute current to the power grid, the energy storage mechanism and the load mechanism.

2. The photovoltaic power generation demonstration platform according to claim 1, characterized in that: The photovoltaic power generation demonstration platform also includes: A display mechanism, wherein the display mechanism is electrically connected to the control mechanism, and the display mechanism is used to display the operating status data of the photovoltaic string.

3. The photovoltaic power generation demonstration platform according to claim 1, characterized in that: The measurement conversion mechanism comprises: an AC / DC measuring component, the AC / DC measuring component being electrically connected to at least one group of the photovoltaic strings, and the AC / DC measuring component being used to measure operating status data of the photovoltaic strings; An inverter is electrically connected to the AC / DC measurement component, and is used to convert the DC power generated by the photovoltaic string into AC power.

4. The photovoltaic power generation demonstration platform according to claim 3, characterized in that: The AC / DC measurement assembly includes at least one DC measurement component and at least one AC measurement component, wherein: One side of a DC metering element is electrically connected to at least one group of the photovoltaic strings, and the other side is electrically connected to the inverter; One side of the AC metering element is electrically connected to the inverter, and the other side is electrically connected to the power distribution mechanism.

5. The photovoltaic power generation demonstration platform according to claim 1, characterized in that: The power distribution mechanism includes: a power distribution control component and a switching component, wherein: The control mechanism is electrically connected to the measurement and conversion mechanism, the power grid, the energy storage mechanism and the load mechanism, and the control mechanism is used to obtain the operating status data of the photovoltaic string, the power grid, the energy storage mechanism and the load mechanism; One side of the power distribution control assembly is electrically connected to the measurement conversion mechanism, and the other side is electrically connected to the switching element, and the switching element is electrically connected to the power grid, the energy storage mechanism and the load mechanism; The control mechanism is electrically connected to the switch component, and is used to control the switch component to be turned on and off based on the operating status data, so as to change the flow direction of the photovoltaic string current.

6. The photovoltaic power generation demonstration platform according to claim 5, characterized in that: The power distribution control assembly further includes a metering member, and the metering member includes a first metering member and a second metering member; One side of the first measuring element is electrically connected to the switching element, and the other side is electrically connected to the power grid, and is used to measure the operating parameters of the power grid; One side of the second measuring element is electrically connected to the switching element, and the other side is electrically connected to the load mechanism, and is used to measure the operating parameters of the load mechanism.

7. The photovoltaic power generation demonstration platform according to claim 5, characterized in that: The load mechanism includes AC power components, UPS components and communication power supply components, wherein: The AC electrical device is electrically connected to the power distribution control assembly; The UPS component is electrically connected to the power distribution control assembly, and the UPS component is used to supply power to the power consumption modules in the photovoltaic power generation demonstration platform when the photovoltaic power generation demonstration platform is powered off; The communication power supply component is electrically connected to the UPS component, and is used to convert the alternating current in the UPS component into direct current to supply power to the power consumption module in the photovoltaic power generation demonstration platform.

8. The photovoltaic power generation demonstration platform according to claim 1, characterized in that: The photovoltaic power generation demonstration platform also includes: A base, wherein a forklift slot is provided on the base; A cabinet, wherein the power distribution mechanism and the control mechanism are both arranged inside the cabinet, the measurement conversion mechanism is arranged outside the cabinet, and the cabinet is snap-connected to the base.

9. The photovoltaic power generation demonstration platform according to claim 8, characterized in that: At least two first clamping parts are arranged at the end of the cabinet body close to the base, and at least two second clamping parts are arranged at the end of the base body close to the cabinet body, and each of the first clamping parts is clamped in one of the second clamping parts.

10. The photovoltaic power generation demonstration platform according to claim 9, characterized in that: At least two hoisting openings are arranged at the end of the cabinet away from the base, and the hoisting openings are used for hoisting the cabinet.

11. The photovoltaic power generation demonstration platform according to claim 8, characterized in that: The base includes a supporting foot, the supporting foot is connected to the end of the base away from the cabinet, and the height of the supporting foot is adjustable; The supporting feet include a plurality of supporting feet, and the plurality of supporting feet are arranged at intervals.

Images