New energy booster station cabin roof photovoltaic system

Abstract

The invention discloses a cabin roof photovoltaic system of a new energy booster station. The cabin roof photovoltaic system comprises a cabin body, a photovoltaic confluence box, a photovoltaic access cabinet, an alternating-current low-voltage feeder cabinet reserved switch, a plurality of confluence terminals, a plurality of micro inverters and a plurality of photovoltaic modules, wherein the photovoltaic confluence box, the photovoltaic access cabinet, the alternating-current low-voltage feeder cabinet reserved switch, the plurality of confluence terminals and the plurality of micro inverters are arranged in the cabin body; one confluence terminal corresponds to a plurality of micro inverters, one micro inverter corresponds to a plurality of photovoltaic modules, the output end of each photovoltaic module is connected with the input end of the corresponding micro inverter, the output end of each micro inverter is connected with the corresponding confluence terminal, each confluence terminal is connected with the input end of the photovoltaic confluence box, and the output end of the photovoltaic confluence box is connected with the input end of the photovoltaic confluence box. The output end of the photovoltaic confluence box is connected with the input end of the photovoltaic access cabinet, the output end of the photovoltaic access cabinet is connected with the reserved switch of the alternating current low-voltage feeder cabinet, and the top position of the booster station cabin can be fully utilized by the system.

Description

Technical Field

[0001] The invention belongs to the technical field of photovoltaic power generation and relates to a new energy booster station cabin roof photovoltaic system. Background Art

[0002] A new energy booster station is a substation that converts low-voltage electricity generated by distributed new energy power stations (such as wind power, photovoltaic power stations, etc.) into high-voltage electricity and transmits it to the substation in the power grid. The booster station is usually composed of converters, transformers, distribution equipment, etc. It is the only way for new energy power to be output to the power grid. New energy booster stations are widely used in new energy power generation fields such as wind power and photovoltaic power. For example, in a wind farm, the booster station boosts the low-voltage electricity generated by the wind farm and sends it to the power grid; in a photovoltaic power station, the booster station also boosts the low-voltage electricity generated by photovoltaic panels and sends it to the power grid. In addition, the new energy booster station can also be used in urban rail transit, smart microgrids and other scenarios. By storing and discharging electricity, the grid voltage is smoothly adjusted to ensure the normal operation of the system. In summary, the new energy booster station is an important power conversion link in the new energy power system, with the advantages of energy saving and environmental protection, improving power transmission efficiency and stable power output. In the future, with the continuous development of the new energy industry, new energy booster stations will be more widely used and promoted.

[0003] For new energy booster stations, prefabricated cabin solutions are increasingly being adopted. Usually, the existing prefabricated cabin roof is not used in a special way, which causes a certain degree of waste of space resources. At the same time, the existing technology has a low utilization rate of solar energy. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art and provide a new energy booster station cabin roof photovoltaic system, which can fully utilize the top position of the booster station cabin.

[0005] To achieve the above-mentioned purpose, the present invention discloses a new energy boost station cabin roof photovoltaic system, including a cabin and a photovoltaic junction box arranged in the cabin, a photovoltaic access cabinet, an AC low-voltage feeder cabinet reserved switch, a plurality of junction terminals and a plurality of micro inverters, and a plurality of photovoltaic modules arranged on the cabin top;

[0006] One bus terminal corresponds to several micro-inverters, and one micro-inverter corresponds to several photovoltaic modules, wherein the output end of each photovoltaic module is connected to the input end of the corresponding micro-inverter, the output end of each micro-inverter is connected to the corresponding bus terminal, each bus terminal is connected to the input end of the photovoltaic bus box, the output end of the photovoltaic bus box is connected to the input end of the photovoltaic access cabinet, and the output end of the photovoltaic access cabinet is connected to the reserved switch of the AC low-voltage feeder cabinet.

[0007] As a further improvement of the photovoltaic system on the roof of the new energy booster station described in the present invention,

[0008] Furthermore, the photovoltaic modules connected to the same micro-inverter are connected in parallel.

[0009] Furthermore, the micro inverters connected to the same bus terminal are connected in parallel.

[0010] Furthermore, the bus terminals are connected in parallel.

[0011] Furthermore, the photovoltaic access cabinet includes a circuit breaker and an isolating switch, wherein the photovoltaic junction box is connected to the reserved switch of the AC low-voltage feeder cabinet via the circuit breaker and the isolating switch, and a current transformer and a surge protector are arranged on the line between the photovoltaic junction box and the circuit breaker.

[0012] Furthermore, the photovoltaic module and the micro inverter are connected via a single-core DC cable.

[0013] Furthermore, the micro inverter and the photovoltaic junction box are connected by a two-core AC cable.

[0014] Furthermore, the photovoltaic junction box and the photovoltaic access box are connected through a four-core AC cable.

[0015] Furthermore, the photovoltaic module includes a concentrator, a divider, a solar panel and a heat collecting tube; the concentrator concentrates sunlight onto the divider, and the short-wavelength light energy is reflected to the solar panel through the divider, and other light passes through the divider and irradiates the heat collecting tube to heat the heat transfer fluid in the heat collecting tube, and the output end of the solar panel is connected to the micro inverter.

[0016] The present invention discloses a new energy boost station cabin roof photovoltaic system, comprising a cabin and a photovoltaic junction box arranged in the cabin, a photovoltaic access cabinet, an AC low-voltage feeder cabinet reserved switch, a plurality of junction terminals and a plurality of micro inverters, and a plurality of photovoltaic modules arranged on the cabin top;

[0017] One bus terminal corresponds to several micro-inverters, and one micro-inverter corresponds to several photovoltaic modules, wherein the output end of each photovoltaic module is connected to the input end of the corresponding micro-inverter, the output end of each micro-inverter is connected to the corresponding bus terminal, each bus terminal is connected to the input end of the photovoltaic bus box, the output end of the photovoltaic bus box is connected to the input end of the photovoltaic access cabinet, and the output end of the photovoltaic access cabinet is connected to the reserved switch of the AC low-voltage feeder cabinet;

[0018] The photovoltaic access cabinet includes a circuit breaker and an isolating switch, wherein the photovoltaic junction box is connected to the reserved switch of the AC low-voltage feeder cabinet via the circuit breaker and the isolating switch, and a current transformer and a surge protector are provided on the line between the photovoltaic junction box and the circuit breaker;

[0019] The photovoltaic module includes a concentrator, a divider, a solar panel and a heat collecting tube; the concentrator concentrates sunlight onto the divider, and the short-wavelength light energy is reflected to the solar panel through the divider. Other light passes through the divider and irradiates the heat collecting tube to heat the heat transfer fluid in the heat collecting tube. The output end of the solar panel is connected to the micro inverter.

[0020] The present invention has the following beneficial effects:

[0021] The new energy booster station cabin roof photovoltaic system described in the present invention comprises a cabin and a photovoltaic junction box, a photovoltaic access cabinet, an AC low-voltage feeder cabinet reserved switch, a plurality of junction terminals and a plurality of micro-inverters arranged in the cabin, and a plurality of photovoltaic modules arranged on the top of the cabin during specific operation. The photovoltaic modules are placed on the top of the cabin to make full use of the top position of the booster station cabin, and the configuration of photovoltaic energy is coordinated to make effective and green use of resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 is a schematic diagram of an electrical system of the present invention;

[0024] Figure 2 It is a schematic diagram of the electrical arrangement of the present invention;

[0025] Figure 3 It is a structural diagram of the photovoltaic module 1.

[0026] Among them, 1 is the photovoltaic module, 2 is the micro inverter, 3 is the photovoltaic junction box, and 4 is the photovoltaic access box. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be understood that the terms “include” and “comprises” indicate the presence of described features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or collections thereof.

[0029] It should also be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0030] It should be further understood that the term "and / or" used in the present specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes these combinations. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in the present invention generally indicates that the associated objects are in an "or" relationship.

[0031] It should be understood that, although the terms first, second, third, etc. may be used to describe preset ranges, etc. in the embodiments of the present invention, these preset ranges should not be limited to these terms. These terms are only used to distinguish preset ranges from each other. For example, without departing from the scope of the embodiments of the present invention, the first preset range may also be referred to as the second preset range, and similarly, the second preset range may also be referred to as the first preset range.

[0032] The word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can usually be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] Various structural schematic diagrams of the embodiments disclosed in the present invention are shown in the accompanying drawings. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clear expression. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may additionally design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0035] As is known, the photovoltaic junction box (or photovoltaic junction box) is a key component in the photovoltaic power generation system. Its main function is to ensure the orderly connection of photovoltaic modules and the convergence of current. The following is a detailed introduction to the photovoltaic junction box: Current convergence: The main function of the photovoltaic junction box is to collect the current generated by multiple photovoltaic modules and then transmit it to the inverter or distribution equipment at the next level. In a parallel circuit, the current will be superimposed, and the photovoltaic junction box is the wiring device to achieve this process. System protection: The photovoltaic junction box is usually equipped with protection elements such as fuses and circuit breakers. When a photovoltaic system fails, these protection elements can quickly cut off the circuit to prevent the fault from expanding and protect the safety of the entire photovoltaic system. Easy maintenance: The design of the photovoltaic junction box makes it easier to cut off the circuit during maintenance and inspection of the photovoltaic system, thereby facilitating maintenance and maintenance work by operation and maintenance personnel. Its structural features are: Inlet and outlet line design: The inlet and outlet lines of the photovoltaic junction box are usually protected by circuit breakers or fuses to ensure the safety of the current during transmission. Lightning protection: In order to improve the lightning protection capability of the photovoltaic system, the photovoltaic junction box is usually equipped with a lightning protection module or lightning arrester. These lightning protection components can quickly discharge excessive electrical energy when a lightning strike occurs, protecting the photovoltaic system from damage by lightning. Protection level: The protection level of the photovoltaic junction box is usually high, such as IP65, which can meet the requirements of outdoor installation and has waterproof, dustproof, UV-proof, salt spray corrosion-proof and other properties. Distributed photovoltaic power generation: In distributed photovoltaic projects such as rooftop photovoltaics and small photovoltaic power stations, the photovoltaic junction box can collect the current generated by multiple photovoltaic modules and then transmit it to the inverter for conversion. Large centralized photovoltaic power stations: In large centralized photovoltaic power stations, photovoltaic junction boxes also play an important role. It can collect the current generated by a large number of photovoltaic modules, and then transmit it to the booster station for boosting processing, and finally merge it into the power grid. Energy storage system: In the battery energy storage system, the photovoltaic junction box can also integrate and converge the AC power output by multiple energy storage converters.

[0036] The new energy booster station cabin, especially the primary prefabricated cabin of the booster station, is an indispensable and important part of the new energy power system. The following is a detailed analysis of the new energy booster station cabin: The new energy booster station cabin, especially the primary prefabricated cabin of the booster station, is a prefabricated module that highly integrates the primary equipment such as transformers, switch cabinets, and transformers in traditional booster stations. This integrated design not only reduces the footprint of the equipment, improves land utilization, but also reduces construction costs and construction periods. Main components and functions, the primary prefabricated cabin of the booster station integrates a variety of key equipment, mainly including: Transformer: As the "heart" of the booster station, it realizes power conversion by changing the voltage level and boosts low-voltage electric energy to high-voltage electric energy. Switchgear: Contains safety devices such as circuit breakers and isolating switches. The circuit breaker can quickly cut off the power supply when a circuit fails to prevent the fault from expanding; the isolating switch is mainly used to isolate the circuit for easy inspection and maintenance. Transformer: Including current transformers and voltage transformers, used to measure the current and voltage in the circuit, providing a basis for monitoring and regulation. Lightning arrester: important protection equipment that can protect the booster station from lightning strikes in severe weather conditions such as lightning. These devices work together to achieve the functions of boosting, power transmission and protection.

[0037] Embodiment 1

[0038] refer to Figure 1 The new energy booster station cabin roof photovoltaic system of the present invention includes a cabin and a photovoltaic junction box 3 arranged in the cabin, a photovoltaic access cabinet, an AC low-voltage feeder cabinet reserved switch, a plurality of junction terminals and a plurality of micro-inverters 2, and a plurality of photovoltaic modules 1 arranged on the top of the cabin; one junction terminal corresponds to a plurality of micro-inverters 2, and one micro-inverter 2 corresponds to a plurality of photovoltaic modules 1, wherein the output end of each photovoltaic module 1 is connected to the input end of the corresponding micro-inverter 2, the output end of each micro-inverter 2 is connected to the corresponding junction terminal, each junction terminal is connected to the input end of the photovoltaic junction box 3, the output end of the photovoltaic junction box 3 is connected to the input end of the photovoltaic access cabinet, and the output end of the photovoltaic access cabinet is connected to the reserved switch of the AC low-voltage feeder cabinet.

[0039] Embodiment 2

[0040] refer to Figure 1 , Figure 2 and Figure 3The photovoltaic system on the cabin top of the new energy booster station of the present invention comprises a cabin and a photovoltaic junction box 3 arranged in the cabin, a photovoltaic access cabinet, a reserved switch of an AC low-voltage feeder cabinet, a plurality of junction terminals and a plurality of micro-inverters 2, and a plurality of photovoltaic modules 1 arranged on the top of the cabin; one junction terminal corresponds to a plurality of micro-inverters 2, and one micro-inverter 2 corresponds to a plurality of photovoltaic modules 1, wherein the output end of each photovoltaic module 1 is connected to the input end of the corresponding micro-inverter 2, the output end of each micro-inverter 2 is connected to the corresponding junction terminal, each junction terminal is connected to the input end of the photovoltaic junction box 3, and the output end of the photovoltaic junction box 3 is connected to the input end of the photovoltaic access cabinet. The output end of the photovoltaic access cabinet is connected to the reserved switch of the AC low-voltage feeder cabinet; the photovoltaic access cabinet includes a circuit breaker and an isolating switch, wherein the photovoltaic junction box 3 is connected to the reserved switch of the AC low-voltage feeder cabinet via the circuit breaker and the isolating switch, and a current transformer and a surge protector are arranged on the line between the photovoltaic junction box 3 and the circuit breaker; the photovoltaic assembly 1 includes a concentrator, a divider, a solar panel and a heat collecting tube; the concentrator concentrates sunlight onto the divider, and reflects short-wavelength light energy onto the solar panel through the divider, and other light passes through the divider and irradiates the heat collecting tube to heat the heat transfer fluid in the heat collecting tube, and the output end of the solar panel is connected to the micro inverter 2.

[0041] Embodiment 3

[0042] refer to Figure 1 , Figure 2 and Figure 3 The photovoltaic system on the cabin top of the new energy booster station described in the present invention includes a cabin and a photovoltaic junction box 3 arranged in the cabin, a photovoltaic access cabinet, an AC low-voltage feeder cabinet reserved switch, a plurality of junction terminals and a plurality of micro-inverters 2, and a plurality of photovoltaic modules 1 arranged on the top of the cabin;

[0043] One bus terminal corresponds to several micro-inverters 2, and one micro-inverter 2 corresponds to several photovoltaic modules 1, wherein the output end of each photovoltaic module 1 is connected to the input end of the corresponding micro-inverter 2, the output end of each micro-inverter 2 is connected to the corresponding bus terminal, each bus terminal is connected to the input end of the photovoltaic bus box 3, the output end of the photovoltaic bus box 3 is connected to the input end of the photovoltaic access cabinet, and the output end of the photovoltaic access cabinet is connected to the reserved switch of the AC low-voltage feeder cabinet.

[0044] As an implementation mode of the present invention, the photovoltaic modules 1 connected to the same micro-inverter 2 are connected in parallel.

[0045] As an embodiment of the present invention, the micro inverters 2 connected to the same bus terminal are connected in parallel.

[0046] As an implementation mode of the present invention, the bus terminals are connected in parallel.

[0047] As an embodiment of the present invention, the photovoltaic access cabinet includes a surge protector, a current transformer, a circuit breaker and an isolating switch, wherein the photovoltaic junction box 3 is connected to the reserved switch of the AC low-voltage feeder cabinet via the circuit breaker and the isolating switch, and a current transformer and a surge protector are arranged on the line between the photovoltaic junction box 3 and the circuit breaker.

[0048] As an implementation mode of the present invention, the photovoltaic assembly 1 and the micro inverter 2 are connected via a single-core DC cable.

[0049] As an implementation mode of the present invention, the micro inverter 2 and the photovoltaic junction box 3 are connected by a two-core AC cable.

[0050] As an implementation mode of the present invention, the photovoltaic junction box 3 and the photovoltaic access box 4 are connected via a four-core AC cable.

[0051] As an embodiment of the present invention, the photovoltaic module 1 includes a concentrator, a divider, a solar panel and a heat collecting tube; the concentrator concentrates sunlight onto the divider, and the short-wavelength light energy is reflected to the solar panel through the divider. Other light passes through the divider and irradiates the heat collecting tube to heat the heat-conducting fluid in the heat collecting tube. The heat-conducting fluid in the heat collecting tube can be used for heating or power generation, and the output end of the solar panel is connected to the micro inverter 2.

[0052] It should be noted that the present invention makes full use of the idle cabin roof area of ​​the new energy prefabricated cabin-type booster station and provides a new energy booster station cabin roof photovoltaic system, which has a simple structure and enables full green utilization of resources.

[0053] The present invention utilizes a frequency divider to divide the full spectrum of solar energy and utilize it in stages, utilizes short-wave bands such as visible light and infrared light to generate electricity, and uses other light for heat collection to improve resource utilization.

[0054] In addition, the present invention drives the solar panel and the concentrator to rotate through the rotating assembly, so that the sunlight can be irradiated onto the frequency divider through the concentrator.

[0055] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and disclosure of the invention. This application is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed by the present invention. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0056] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

[0057] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent structural change made to the above embodiment based on the technical essence of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A new energy boost station cabin roof photovoltaic system, characterized in that: It comprises a cabin, a photovoltaic junction box (3) arranged in the cabin, a photovoltaic access cabinet, an AC low-voltage feeder cabinet reserved switch, a plurality of junction terminals and a plurality of micro-inverters (2), and a plurality of photovoltaic modules (1) arranged on the top of the cabin; One bus terminal corresponds to a plurality of micro-inverters (2), and one micro-inverter (2) corresponds to a plurality of photovoltaic modules (1), wherein the output end of each photovoltaic module (1) is connected to the input end of the corresponding micro-inverter (2), the output end of each micro-inverter (2) is connected to the corresponding bus terminal, each bus terminal is connected to the input end of a photovoltaic bus box (3), the output end of the photovoltaic bus box (3) is connected to the input end of a photovoltaic access cabinet, and the output end of the photovoltaic access cabinet is connected to a reserved switch of an AC low-voltage feeder cabinet.

2. The new energy boost station cabin roof photovoltaic system according to claim 1 is characterized in that: The photovoltaic modules (1) connected to the same micro-inverter (2) are connected in parallel.

3. The new energy boost station cabin roof photovoltaic system according to claim 1 is characterized in that: The micro inverters (2) connected to the same bus terminal are connected in parallel.

4. The new energy boost station cabin roof photovoltaic system according to claim 1 is characterized in that: The bus terminals are connected in parallel.

5. The new energy boost station cabin roof photovoltaic system according to claim 1 is characterized in that: The photovoltaic access cabinet comprises a circuit breaker and an isolating switch, wherein the photovoltaic junction box (3) is connected to a reserved switch of an AC low-voltage feeder cabinet via the circuit breaker and the isolating switch, and a current transformer and a surge protector are provided on the line between the photovoltaic junction box (3) and the circuit breaker.

6. The new energy boost station cabin roof photovoltaic system according to claim 1, characterized in that: The photovoltaic assembly (1) and the micro inverter (2) are connected via a single-core DC cable.

7. The new energy boost station cabin roof photovoltaic system according to claim 1, characterized in that: The micro inverter (2) and the photovoltaic junction box (3) are connected by a two-core AC cable.

8. The new energy boost station cabin roof photovoltaic system according to claim 1 is characterized in that: The photovoltaic junction box (3) and the photovoltaic access box (4) are connected via a four-core AC cable.

9. The new energy boost station cabin roof photovoltaic system according to claim 1, characterized in that: The photovoltaic assembly (1) comprises a concentrator, a frequency divider, a solar panel and a heat collecting tube; the concentrator concentrates sunlight onto the frequency divider, and the frequency divider reflects short-wavelength light energy onto the solar panel, while other light passes through the frequency divider and irradiates the heat collecting tube, heating the heat transfer fluid in the heat collecting tube. The output end of the solar panel is connected to the micro inverter (2).

10. A new energy boost station cabin roof photovoltaic system, characterized in that: It comprises a cabin, a photovoltaic junction box (3) arranged in the cabin, a photovoltaic access cabinet, an AC low-voltage feeder cabinet reserved switch, a plurality of junction terminals and a plurality of micro-inverters (2), and a plurality of photovoltaic modules (1) arranged on the top of the cabin; One bus terminal corresponds to a plurality of micro-inverters (2), and one micro-inverter (2) corresponds to a plurality of photovoltaic modules (1), wherein the output end of each photovoltaic module (1) is connected to the input end of the corresponding micro-inverter (2), the output end of each micro-inverter (2) is connected to the corresponding bus terminal, each bus terminal is connected to the input end of a photovoltaic bus box (3), the output end of the photovoltaic bus box (3) is connected to the input end of a photovoltaic access cabinet, and the output end of the photovoltaic access cabinet is connected to a reserved switch of an AC low-voltage feeder cabinet; The photovoltaic access cabinet includes a circuit breaker and an isolating switch, wherein the photovoltaic junction box (3) is connected to a reserved switch of the AC low-voltage feeder cabinet via the circuit breaker and the isolating switch, and a current transformer and a surge protector are provided on the line between the photovoltaic junction box (3) and the circuit breaker; The photovoltaic assembly (1) comprises a concentrator, a frequency divider, a solar panel and a heat collecting tube; the concentrator concentrates sunlight onto the frequency divider, and the frequency divider reflects short-wavelength light energy onto the solar panel, while other light passes through the frequency divider and irradiates the heat collecting tube, heating the heat transfer fluid in the heat collecting tube. The output end of the solar panel is connected to the micro inverter (2).

Images