A reverse current protection device for new energy grid connection
By designing an anti-reverse current protection device, which uses components such as transmitters and insulating tubes to detect and block reverse current, the problem of slow response speed of mechanical means is solved, and rapid response and stability improvement of new energy grid-connected systems are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI FULIN ELECTRIC POWER EQUIP CO LTD
- Filing Date
- 2025-08-21
- Publication Date
- 2026-07-31
AI Technical Summary
Existing technologies that use mechanical means to prevent current reversal cannot adapt to the second-level power fluctuations of new energy sources, resulting in slow response speeds.
Design a backflow prevention protection device, including a mounting plate, a limit frame, a power cord, and an anti-backflow component. Utilize components such as a transmitter, connecting wire, and insulating tube to detect and block backflow current, and reduce backflow phenomenon through insulation and transmission lines.
It effectively prevents current reverse flow, reduces current leakage, and improves the response speed and stability of new energy grid-connected systems.
Smart Images
Figure CN224582858U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of anti-backflow protection technology for new energy grid connection, specifically an anti-backflow protection device for new energy grid connection. Background Technology
[0002] As the global energy structure shifts towards cleaner and lower-carbon energy, the proportion of new energy power generation, such as wind and solar power, in the power system is rapidly increasing. However, the intermittency and volatility of new energy power generation pose new challenges to the safe and stable operation of the power grid. In particular, at the distribution network level, the reverse power flow problem has become one of the key technical bottlenecks restricting the high-proportion absorption of new energy.
[0003] When the power generation capacity of new energy sources exceeds the local load demand, the excess electricity will be transmitted to the next higher level of the power grid, i.e., reverse power flow. Typical scenarios include: the midday peak photovoltaic power generation period (when the load is low), and the nighttime peak wind farm power generation period (when industrial electricity consumption is low).
[0004] However, using mechanical means to prevent current reverse flow cannot adapt to the second-level power fluctuations of new energy sources, and the response speed is slow. This solution has a slow response speed to current reverse flow. Utility Model Content
[0005] To address the shortcomings of existing technologies, this utility model provides an anti-reverse current protection device for grid connection of new energy sources, which solves the problems of using mechanical means to prevent current reverse current, being unable to adapt to the second-level power fluctuations of new energy sources, and having a slow response speed.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a backflow prevention protection device for grid connection of new energy sources, comprising an installation plate, a limiting frame fixedly installed on the surface of the installation plate, power lines fixedly installed at both ends of the surface of the limiting frame, an anti-backflow component provided inside the limiting frame, positioning grooves provided on both sides of the limiting frame, and a sealing cap threadedly connected inside the positioning grooves via positioning bolts;
[0007] The anti-backflow component includes a transmitter fixedly installed inside the limiting frame. Connecting lines are fixedly installed on both sides of the transmitter surface, and an insulating tube is fixedly installed on one side of the transmitter surface. A transmission line is installed inside the insulating tube.
[0008] In one specific embodiment, a through groove is formed on the surface of the insulating tube, and the size of the through groove is adapted to the size of the transmission line.
[0009] In one specific embodiment, limiting grooves are provided on both sides of the transmitter surface, and the size of the limiting grooves is adapted to the size of the connecting line.
[0010] In one specific embodiment, a limiting groove is provided at each of the four corners of the mounting plate surface, and a mounting bolt is provided inside the limiting groove.
[0011] In one specific embodiment, positioning grooves are provided on both sides of the surface of the limiting frame, and the size of the positioning grooves is adapted to the size of the positioning bolts.
[0012] In one specific embodiment, a sealing gasket is provided inside the sealing cover, and the size of the sealing gasket is adapted to the size of the top of the limiting frame.
[0013] Compared with the prior art, this utility model provides an anti-reverse current protection device for grid connection of new energy sources, which has the following beneficial effects:
[0014] In the technical solution disclosed in this utility model, by using the mounting plate, the limiting frame, the power cord and the anti-backflow component, during use, the personnel will install the limiting frame through the mounting plate. After the limiting frame is installed, the personnel will use the anti-backflow component to prevent the backflow of current inside the power cord, thereby reducing the occurrence of backflow.
[0015] With the anti-backflow component set by this utility model, when current backflow occurs, the detector will block the backflow current, and then transmit the current through the connecting wire. The current is transmitted through the detector to the inside of the transmission line. The insulating tube can insulate the current, reducing the occurrence of current leakage. The current inside the transmission line will then be transmitted to the inside of the power line, and the current inside the power line will be transmitted to the inside of the new energy grid connection, reducing the occurrence of current backflow. Attached Figure Description
[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;
[0019] Figure 3 This is a schematic diagram of the anti-backflow component structure of this utility model;
[0020] Figure 4 This is a schematic diagram of the limiting frame structure of this utility model.
[0021] In the diagram: 1. Mounting plate; 2. Limiting frame; 3. Power cord; 4. Anti-backflow component; 41. Transmitter; 42. Connecting wire; 43. Insulating tube; 44. Transmission line; 5. Positioning bolt; 6. Sealing cover; 7. Mounting bolt. Detailed Implementation
[0022] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.
[0023] Figures 1-4 As an embodiment of this utility model, an anti-backflow protection device for grid connection of new energy includes a mounting plate 1, a limiting frame 2 is fixedly installed on the surface of the mounting plate 1, power lines 3 are fixedly installed at both ends of the surface of the limiting frame 2, an anti-backflow component 4 is provided inside the limiting frame 2, and positioning grooves are provided on both sides of the limiting frame 2, and a sealing cover 6 is threadedly connected to the inside of the positioning groove through a positioning bolt 5.
[0024] The specific problem addressed in this embodiment is the inability of mechanical means to prevent current backflow to adapt to the second-level power fluctuations of new energy sources, resulting in a slow response speed. This utility model utilizes a mounting plate 1, a limiting frame 2, a power cord 3, and an anti-backflow component 4. During use, personnel install the limiting frame 2 using the mounting plate 1. After installing the limiting frame 2, personnel use the anti-backflow component 4 to prevent backflow of current within the power cord 3, reducing the likelihood of backflow.
[0025] The anti-backflow component 4 includes a transmitter 41 fixedly installed inside the limiting frame 2. Connecting lines 42 are fixedly installed on both sides of the transmitter 41's surface, and an insulating tube 43 is fixedly installed on one side of the transmitter 41's surface. A transmission line 44 is installed inside the insulating tube 43. A through groove is formed on the surface of the insulating tube 43, the size of which matches the size of the transmission line 44. Limiting grooves are formed on both sides of the transmitter 41's surface, the size of which matches the size of the connecting lines 42. In this specific embodiment, when backflow occurs, the detector 41 will block the backflow current, and then transmit the current through the connecting lines 42. The current is transmitted through the detector 41 to the inside of the transmission line 44. The insulating tube 43 can insulate the current, reducing the occurrence of current leakage. Furthermore, the current inside the transmission line 44 will be transmitted to the inside of the power line 3, and the current inside the power line 3 will be transmitted to the new energy grid connection, reducing the occurrence of backflow.
[0026] In this specific embodiment, limit grooves are provided at the four corners of the surface of the mounting plate 1, and mounting bolts 7 are provided inside the limit grooves. Positioning grooves are provided on both sides of the surface of the limit frame 2. The size of the positioning grooves is adapted to the size of the positioning bolts 5. A sealing gasket is provided inside the sealing cover 6. The size of the sealing gasket is adapted to the size of the top of the limit frame 2.
[0027] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.
[0028] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A reverse current protection device for new energy grid connection, comprising a mounting plate (1), characterized in that: A limiting frame (2) is fixedly installed on the surface of the mounting plate (1). Power cords (3) are fixedly installed at both ends of the surface of the limiting frame (2). An anti-backflow component (4) is provided inside the limiting frame (2). Positioning grooves are provided on both sides of the limiting frame (2). A sealing cap (6) is threadedly connected inside the positioning groove through a positioning bolt (5). The anti-backflow component (4) includes a transmitter (41) fixedly installed inside the limiting frame (2). Connecting lines (42) are fixedly installed on both sides of the surface of the transmitter (41). An insulating tube (43) is fixedly installed on one side of the surface of the transmitter (41). A transmission line (44) is provided inside the insulating tube (43). 2.The anti-backflow protection device for grid-connected new energy according to claim 1, characterized in that: The surface of the insulating tube (43) is provided with a through groove, the size of which is adapted to the size of the transmission line (44). 3.The anti-backflow protection device for grid-connected new energy according to claim 1, characterized in that: The transmitter (41) has limiting grooves on both sides of its surface, and the size of the limiting grooves is adapted to the size of the connecting line (42).
4. The anti-backflow protection device for grid connection of new energy according to claim 1, characterized in that: Limiting grooves are provided at the four corners of the surface of the mounting plate (1), and mounting bolts (7) are provided inside the limiting grooves.
5. The anti-backflow protection device for grid connection of new energy according to claim 1, characterized in that: The limiting frame (2) has positioning grooves on both sides of its surface, and the size of the positioning grooves is compatible with the size of the positioning bolt (5). 6.The anti-backflow protection device for grid-connected new energy according to claim 1, characterized in that: The sealing cover (6) has a sealing gasket inside, and the size of the sealing gasket is adapted to the size of the top of the limiting frame (2).