Photovoltaic power station anti-countercurrent monitoring device

Abstract

The utility model relates to the technical field of photovoltaic countercurrent prevention, in particular to a photovoltaic power station countercurrent prevention monitoring device. The device comprises a monitoring structure, the monitoring structure comprises a bidirectional electric meter, a fixing groove is formed in the rear portion of the bidirectional electric meter, a fixing device is arranged in the fixing groove, the bidirectional electric meter is in sliding connection with the fixing device, a cable is sleeved with the fixing device, the fixing groove is wide inside and narrow outside, flanges are arranged at the two ends of the fixing groove, and the fixing device comprises an arc-shaped pipe and a fixing block. The fixing blocks are trapezoidal blocks with wide outer parts and narrow inner parts; and the fixing blocks are matched with the fixing grooves. The cable monitoring device can adapt to cables with different diameters, so that the universality and flexibility of the monitoring device are enhanced, and the installation difficulty and cost caused by mismatching of cable specifications are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to photovoltaic anti -reverse flow technical field, concretely relates to a photovoltaic power plant anti -reverse flow monitoring device. BACKGROUND

[0002] The power supply quality and safety of the public power grid are important cornerstones for the stable operation of the power system, and are directly related to the power experience of the general public and the normal operation of various electrical equipment. Since photovoltaic power generation systems are a renewable energy utilization method, if the generated electric energy is directly fed into the public power grid, it may cause interference to the power grid due to voltage fluctuations, frequency mismatches, or phase differences, and even affect the stability and safety of the entire power system. Therefore, in many countries and regions, in order to ensure the reliable operation of the public power grid, relevant policies or regulations explicitly limit the behavior of photovoltaic power generation systems directly inputting electric energy into the public power grid without processing.

[0003] Therefore, it is necessary to install an anti -reverse flow monitoring device, since the two -way ammeter needs to be directly connected to the cable line, which not only requires the installation personnel to have high electrical safety knowledge and operation skills, but also means that during the installation, maintenance or upgrading of the device, the power supply of the cable often needs to be interrupted, which brings certain inconvenience to the normal operation of the photovoltaic power station. In addition, considering that photovoltaic power stations are often located in remote areas or difficult-to-access locations such as rooftops, these environmental factors further increase the complexity and cost of installation and maintenance work. Therefore, how to optimize the design of the anti -reverse flow monitoring device to make it easier to install, maintain and upgrade, while ensuring monitoring accuracy and reliability, has become a technical problem to be solved in the current construction of photovoltaic power stations. SUMMARY

[0004] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art, provide a photovoltaic power station anti -reverse flow monitoring device, which is easy to install, maintain and upgrade, and ensures monitoring accuracy and reliability.

[0005] The technical scheme of the utility model is:

[0006] A photovoltaic power station anti -reverse flow monitoring device, comprising a monitoring structure, the monitoring structure comprising a two -way meter, a fixing groove is arranged at the rear of the two -way meter, a fixing device is arranged in the fixing groove, the two -way meter is connected with the fixing device in a sliding mode, and a cable is sleeved in the fixing device.

[0007] Preferably, the fixing groove is provided with a wide inner part and a narrow outer part, and the two ends of the fixing groove are provided with a stop edge.

[0008] Preferably, the fixing device comprises an arc-shaped pipe and a fixing block, the fixing block is a trapezoidal block with a wide inner part and a narrow outer part, and the fixing block is matched with the fixing groove.

[0009] Preferably, the arc-shaped pipe is provided with multiple specifications.

[0010] Preferably, the baffle is provided with a through hole, and the fixing block is provided with a connecting plate matched with the through hole, and the through hole and the connecting plate are fixed through bolts.

[0011] Preferably, the bidirectional ammeter is connected with a display.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] Through design with fixed groove and fixed device's monitoring structure, make bidirectional ammeter can connect with cable conveniently, and realize quick installation and disassembly through sliding connection mode, the arc pipe in fixed device designs has a plurality of specifications, can adapt to different diameter cable, thereby enhanced the versatility and flexibility of monitoring device, reduced the installation difficulty and cost caused by cable specification mismatch, the inner width of the rear part of bidirectional ammeter is narrow, and the recess and the baffle are designed, cooperate with the trapezoidal fixed block of outer width, ensure the stability of bidirectional ammeter in fixed groove, effectively prevent the looseness or falling caused by vibration or external force, improve the overall reliability of monitoring device. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, obviously, for those skilled in the art, without creative labor, other drawings can also be obtained according to these drawings.

[0015] Fig. 1 It is the overall structure schematic diagram of the utility model.

[0016] Fig. 2 It is the fixed device structure schematic diagram of the utility model.

[0017] In the drawing: 1, bidirectional ammeter;2, fixed groove;3, fixed device;4, arc pipe;5, fixed block;6, connecting plate;7, baffle. DETAILED DESCRIPTION

[0018] In order to make the personnel in the technical field better understand the technical scheme in the utility model, the following will be combined with the drawings in the embodiment of the utility model, the technical scheme in the embodiment of the utility model is clearly and completely described, obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiment.Based on the embodiment in the utility model, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the utility model.

[0019] EMBODIMENT

[0020] As Figs. 1-2 The embodiment provides a photovoltaic power station anti-reverse flow monitoring device, which comprises a monitoring structure, the monitoring structure comprises a bidirectional ammeter 1, a fixing groove 2 is arranged at the rear of the bidirectional ammeter 1, a fixing device 3 is arranged in the fixing groove 2, the bidirectional ammeter 1 is in sliding connection with the fixing device 3, and the fixing device 3 is sleeved with a cable. The monitoring structure is integrated with the bidirectional ammeter 1, is used for accurately measuring the direction and size of the electric energy flow, the fixing groove 2 is designed at the rear of the bidirectional ammeter 1, the fixing device 3 is embedded in the fixing groove 2, sliding connection is formed between the bidirectional ammeter 1 and the fixing device 3, and therefore quick installation and disassembly are facilitated. The fixing device 3 is internally provided with a sleeving structure and is used for firmly fixing the cable, so that the stability and safety of electric energy transmission are ensured.

[0021] Preferably, the rear of the bidirectional ammeter 1 is provided with a groove with an inner width wider than an outer width, and the two ends of the groove are provided with a stop edge 7. The groove with an inner width wider than an outer width arranged at the rear of the bidirectional ammeter 1 helps to enhance the matching degree of the bidirectional ammeter 1 and the fixing device 3, and can effectively prevent external impurities or moisture from entering, thereby improving the durability of the device. The stop edge 7 arranged at the two ends of the groove not only plays a limiting role, but also facilitates positioning and calibration during installation.

[0022] Preferably, the fixing device 3 comprises an arc-shaped pipe 4 and a fixing block 5, the fixing block 5 is a trapezoidal block with an outer width wider than an inner width, and the fixing block 5 is matched with the fixing groove 2. The fixing device 3 improves the convenience of installation, ensures the stability and firmness of the fixing device 3 in the fixing groove 2, and the arc-shaped pipe 4 serves as a main component for sleeving the cable, which helps to reduce the friction between the cable and the fixing device 3 and prolong the service life of the cable.

[0023] Preferably, the arc-shaped pipe 4 is provided with multiple specifications. By providing multiple specifications, the monitoring device can be adapted to cables with various diameters, thereby improving the versatility and flexibility of the device.

[0024] Preferably, the stop edge 7 is provided with a through hole, the fixing block 5 is provided with a connecting plate 6 matched with the through hole, and the through hole and the connecting plate 6 are fixed by bolts. During installation, the user can tightly connect the through hole and the connecting plate 6 by bolts, so as to ensure the firm fixing between the bidirectional ammeter 1 and the fixing device 3. This design improves the installation efficiency and can effectively prevent loosening or falling caused by vibration or external force.

[0025] Preferably, the bidirectional ammeter 1 is connected with a display. The display can directly display current data, voltage data and reverse flow alarm information, helping the user to timely discover and handle potential safety hazards.

[0026] Working principle:

[0027] The device monitors the flow direction and size of electrical energy between the photovoltaic power plant and the public grid in real time through the bidirectional electricity meter 1 component. The design of the bidirectional electricity meter 1 enables it to accurately measure both forward and reverse currents, thus accurately determining whether there is a reverse flow situation. Inside the device, the cable is stably sleeved and connected to the bidirectional electricity meter 1 through the fixing device 3. The design of the fixing device 3 ensures a firm connection between the cable and the electricity meter, while facilitating installation and removal. When the current in the cable flows, the bidirectional electricity meter 1 can capture this information in real time and convert it into readable data. In order to demonstrate the electrical energy flow, the bidirectional electricity meter 1 is connected with a display, which can display current data, voltage data and other key information in real time, enabling users to understand the operation status of the photovoltaic power plant at a glance. When a reverse flow situation is detected, the display will also issue an alarm message to remind users to take timely measures for processing. Once the reverse flow phenomenon is detected, the device will immediately trigger the corresponding protection mechanism, including reducing the output power of the inverter, cutting off the reverse flow path and other measures, to ensure that excess electrical energy does not flow back to the public grid, thus maintaining the stability and safety of the grid.

[0028] Although the utility model has been described in detail by referring to the attached drawings and in combination with the preferred embodiments, the utility model is not limited thereto. Without departing from the spirit and essence of the utility model, those skilled in the art can make various equivalent modifications or replacements to the embodiments of the utility model, and these modifications or replacements should be within the scope of the utility model. Any person skilled in the art within the technical range disclosed by the utility model can easily think of changes or replacements, which should be covered within the protection scope of the utility model. Therefore, the protection scope of the utility model should be subject to the protection scope of the claims.

Claims

1. A photovoltaic power station anti-backflow monitoring device, characterized in that, The utility model relates to a double -way electric meter monitoring structure, including monitoring structure, monitoring structure includes double -way electric meter (1), the rear of double -way electric meter (1) is equipped with fixed slot (2), is equipped with fixing device (3) in fixed slot (2), double -way electric meter (1) is connected with fixing device (3) slidingly, and fixing device (3) is sleeved with cable in.

2. The anti-inrush monitoring device for a photovoltaic power station according to claim 1, characterized in that, The fixed slot (2) is provided with a wider inside and a narrower outside, and the fixed slot (2) is provided with a stop edge (7) at both ends.

3. The anti-inrush monitoring device for a photovoltaic power station according to claim 2, characterized in that, The fixing device (3) includes an arc-shaped tube (4) and a fixing block (5), the fixing block (5) is a trapezoidal block with a wider outside and a narrower inside, and the fixing block (5) is adapted to the fixed slot (2).

4. The anti-inrush monitoring device for a photovoltaic power station according to claim 3, characterized in that, The arc-shaped tube (4) is provided with multiple specifications.

5. The anti-inrush monitoring device for a photovoltaic power station according to claim 4, characterized in that, The stop edge (7) is provided with a through hole, the fixing block (5) is provided with a connecting plate (6) adapted to the through hole, and the through hole and the connecting plate (6) are fixed by bolts.

6. The anti-inrush monitoring device for a photovoltaic power station according to claim 1, characterized in that, The double -way electric meter (1) is connected with a display.

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