CN115588601A - An intelligent circuit breaker for photovoltaic power generation - Google Patents

Abstract

The invention belongs to the technical field of circuit breakers, and particularly relates to an intelligent circuit breaker for photovoltaic power generation, which comprises: the wire inlet connector and the wire outlet connector are arranged on the left side and the right side of the inner part of the outer shell and correspond to the wire holes; the inside middle-right side of shell body is connected with electrically conductive driving lever through the round pin axle rotation, the left downside that the service connector is provided with can with electrically conductive static conducting block of conductive driving lever contact. The circuit protection function of the basic circuit breaker is realized by breaking the circuit, and meanwhile, the circuit running state can be monitored in real time through the detection circuit, the circuit condition can be acquired in real time, and corresponding processing can be performed in time; through the remote control mode, can be remote to circuit breaker control, improve the efficiency of security and control, need not closely regulate and control, and supply power alone through the battery, do not use electricity with the circuit of circuit breaker jointly, control is independent, does not receive the interference.

Description

An intelligent circuit breaker for photovoltaic power generation

technical field

The invention relates to the technical field of circuit breakers, in particular to an intelligent circuit breaker for photovoltaic power generation.

Background technique

Photovoltaic power generation is a technology that directly converts light energy into electrical energy by using the photovoltaic effect at the semiconductor interface. It is mainly composed of three parts: solar panels (components), controllers and inverters, and the main components are composed of electronic components. The solar cells are packaged and protected after being connected in series to form a large-area solar cell module, and then cooperate with power controllers and other components to form a photovoltaic power generation device.

Circuit breakers are used in photovoltaic power generation, and circuit breakers are installed in photovoltaic power generation circuits to avoid overload in the circuit and play a protective role.

A circuit breaker is a switching device that can close, carry and break current under normal circuit conditions and can close, carry and break current under abnormal circuit conditions within a specified time. Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to their scope of use. The division of high and low voltage boundaries is relatively vague. Generally, those above 3kV are called high-voltage electrical appliances.

Circuit breakers can be used to distribute electric energy, start asynchronous motors infrequently, protect power lines and motors, and automatically cut off the circuit when they are severely overloaded, short-circuited, or under-voltage. Its function is equivalent to a fuse-type switch. Combination with overheating and underheating relays, etc. Moreover, there is generally no need to change parts after breaking the fault current. Has been widely used.

The existing circuit breaker can protect the circuit when it is in use, but it is difficult to monitor the real-time status of the circuit, it is impossible to feed back information in time, and it is difficult to perform remote control, which is inconvenient for remote control.

Contents of the invention

The object of the present invention is to provide an intelligent circuit breaker for photovoltaic power generation, so as to solve the problems raised in the above-mentioned background technology.

In order to achieve the above object, the present invention provides the following technical solution: an intelligent circuit breaker for photovoltaic power generation, comprising:

The outer shell, the outer shell is hollow, and the left and right side walls of the outer shell are provided with wire holes, and the inner left and right sides of the outer shell and the positions corresponding to the wire holes are respectively provided with outgoing line joints and incoming line joints ;

The right side of the inside of the outer casing is rotatably connected to a conductive lever through a pin shaft, and the lower left side of the incoming line connector is provided with a static conductive block that can contact and conduct electricity with the conductive lever, and the right side of the conductive lever is set There is a supporting spring, and the right end of the supporting spring is connected with the inner wall of the outer casing;

The top of the conductive lever is provided with an arc-shaped insulating plate, the top of the outer shell is provided with a handle capable of swinging the conductive lever and the arc-shaped insulating plate, and the left side of the outer shell is provided with an elastic hook plate , the upper right side of the elastic hook plate is provided with a bump matching the left end of the arc-shaped insulating plate;

The right side wall of the elastic hook plate is provided with a magnet rod, and a coil is arranged outside the magnet rod, and the coil is connected with the circuit of the circuit breaker. After the coil is energized, the magnet rod and the elastic hook plate are pushed to the left. the magnetic force;

The conductive lever is connected to the outlet joint through a wire;

A detection circuit is provided at the bottom of the inner cavity of the outer shell, and the detection circuit includes a measurement circuit module connected to the conductive lever wire, the output end of the measurement circuit module is connected to the acquisition module, and the acquisition module The output end is connected to the processing chip, and the processing chip is externally connected to a communication circuit;

The measurement circuit module performs real-time measurement of the current, voltage, frequency, and power of the circuit breaker and reactive energy measurement to obtain a measurement value, which is collected centrally by the acquisition module, and the measurement value is output to the processing chip, and the processing chip The metering value is sent and instructions are received based on the communication circuit, and a remote control for communication through the communication circuit is provided externally.

Further, an armature is provided on the left side wall of the elastic hook plate, an electromagnet corresponding to the armature is provided on the left side of the outer casing, and a battery is also arranged inside the outer casing, and the battery and the electromagnet Electrically connected, the output of the processing chip controls the power on and off of the electromagnet.

Further, adjustment holes are provided on the left and right sides of the upper surface of the outer casing, and the adjustment holes correspond to the positions of the outgoing line joints and the incoming line joints respectively.

Further, the right side wall of the conductive lever is provided with a manual push block, and the upper surface of the outer casing is provided with a through slot corresponding to the position of the manual push block.

Further, a protrusion is provided on the side wall of the handle, and when the handle is turned right to the stroke end, the left end of the arc-shaped insulating plate is pressed down and stuck on the lower side of the protrusion of the elastic hook plate.

Further, the outer casing is an insulating plastic outer casing.

Compared with prior art, the beneficial effect of the present invention is:

1) This solution realizes the circuit protection function of the basic circuit breaker by disconnecting the circuit, and at the same time, it can monitor the circuit operation status in real time through the detection circuit, and can obtain the status of the circuit in real time, and carry out corresponding processing in a timely manner;

2) Through the remote control method, the circuit breaker can be controlled from a long distance, which improves the safety and control efficiency, does not require short-distance regulation, and is powered by the battery alone, does not share power with the circuit breaker circuit, and is independent of control and is not affected by interference.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a circuit system block diagram of the detection circuit of the present invention.

In the figure: 1 outer casing, 2 wire holes, 3 inlet connector, 4 outlet connector, 5 static conductive block, 6 conductive lever, 7 manual push block, 8 through slot, 9 support spring, 10 arc insulating plate, 11 Handle, 12 elastic hook plates, 13 magnet bars, 14 coils, 15 armatures, 16 electromagnets, 17 detection circuits, 18 batteries.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In describing the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", " The orientation or positional relationship indicated by "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, so as to Specific orientation configurations and operations, therefore, are not to be construed as limitations on the invention.

Example:

Please refer to Figure 1-2, the present invention provides a technical solution: an intelligent circuit breaker for photovoltaic power generation, including:

Outer casing 1, the outer casing 1 has a hollow shape, and wire holes 2 are opened on the left and right side walls of the outer casing 1, and the left and right sides of the inside of the outer casing 1 and the positions corresponding to the wire holes 2 are respectively provided with Outlet joint 4 and incoming line joint 3; As shown in Figure 1, it is the overall cross-sectional view, the outer shell 1 is set in a convex shape, and the lower part of the outer shell 1 can be set in a slot shape, which is convenient for snap-fit connection, and the shell made of plastic material Body 1, less prone to electric shock.

The right side of the inside of the outer casing 1 is rotatably connected with a conductive lever 6 through a pin shaft, and the lower left side of the incoming line connector 3 is provided with a static conductive block 5 capable of contacting and conducting electricity with the conductive lever 6. The right side of the rod 6 is provided with a supporting spring 9, and the right end of the supporting spring 9 is connected with the inner wall of the outer casing 1;

The top of the conductive lever 6 is provided with an arc-shaped insulating plate 10, and the top of the outer shell 1 is provided with a handle 11 capable of swinging the conductive lever 6 and the arc-shaped insulating plate 10. The left side is provided with an elastic hook plate 12, and the upper right side of the elastic hook plate 12 is provided with a bump matching the left end of the arc-shaped insulating plate 10;

The right side wall of described elastic hook plate 12 is provided with magnet rod 13, and the outside of described magnet rod 13 is provided with coil 14, and described coil 14 is connected with the circuit of this circuit breaker, produces after coil 14 energizes magnet rod 13. And the magnetic force that elastic hook plate 12 pushes to the left;

The conductive lever 6 is connected with the outlet connector 4 through a wire;

A detection circuit 17 is provided at the bottom end of the inner cavity of the outer casing 1, and the detection circuit 17 includes a measurement circuit module connected to the conductive lever 6 wires, and the output end of the measurement circuit module is connected to the acquisition module. The output terminal of the acquisition module is connected with the processing chip, and the processing chip is externally connected with a communication circuit;

The measurement circuit module performs real-time measurement of the current, voltage, frequency, and power of the circuit breaker and reactive energy measurement to obtain a measurement value, which is collected centrally by the acquisition module, and the measurement value is output to the processing chip, and the processing chip The metering value is sent and instructions are received based on the communication circuit, and a remote control for communication through the communication circuit is provided externally.

Preferably, an armature 15 is provided on the left side wall of the elastic hook plate 12, an electromagnet 16 corresponding to the armature 15 is provided on the left side of the outer casing 1, and a battery 18 is also arranged inside the outer casing 1 , the battery 18 is electrically connected to the electromagnet 16, and the processing chip outputs to control the on-off of the electromagnet 16. The battery 18 provides electric energy for the electromagnet 16. After the electromagnet 16 is energized, the adsorption armature 15 and the elastic hook plate 12 deflect to the left, so that the protrusion on the upper end of the elastic hook plate 12 is separated from the arc insulating plate 10. Under stretching, the conductive lever 6 is rotated clockwise, the bottom end of the conductive lever 6 is separated from the static conductive block 5, and the circuit where the circuit breaker is located is disconnected.

Preferably, adjustment holes are provided on the left and right sides of the upper surface of the outer casing 1 , and the adjustment holes correspond to the positions of the outlet connector 4 and the inlet connector 3 respectively. Through the setting of the adjustment hole, the screws on the outgoing line joint 4 and the incoming line joint 3 can be adjusted, and the connecting wires in the outgoing line joint 4 and the incoming line joint 3 can be tightened or loosened.

Preferably, the right side wall of the conductive lever 6 is provided with a manual push block 7 , and the upper surface of the outer casing 1 is provided with a through groove 8 corresponding to the position of the manual push block 7 . Through the setting of the through slot 8, it is pushed by the insulating rod on the outside, so that the bottom end of the conductive driving rod 6 is separated from the static conductive block 5, and the circuit where the circuit breaker is located is disconnected.

Preferably, a protrusion is provided on the side wall of the handle 11 , and when the handle 11 is turned right to the end of the stroke, the left end of the arc-shaped insulating plate 10 presses down and gets stuck on the underside of the protrusion of the elastic hook plate 12 .

Preferably, the outer casing 1 is an insulating plastic outer casing.

Working principle: Connect the two wires of the circuit to the incoming line joint 3 and the outgoing line joint 4 respectively. When the circuit needs to be connected, turn the handle 11 clockwise, and the protrusion of the handle 11 will withstand the upper surface of the arc-shaped insulating plate 10. side, so that the arc-shaped insulating plate 10 rotates counterclockwise, the left end of the arc-shaped insulating plate 10 presses down and snaps into the underside of the bump on the upper right side of the elastic hook plate 12, and the support spring 9 is deformed under pressure at this time.

At the same time, the conductive lever 6 is in contact with the static conductive block 5, and the two wires are connected to realize the connection of the circuit.

At this time, the measurement circuit module of the detection circuit 17 performs real-time measurement of the current, voltage, frequency and power of the circuit breaker and reactive energy measurement to obtain a measurement value, which is collected centrally by the acquisition module, and the measurement value is output to the processing chip, and the processing chip The measurement value is recorded and analyzed, and the result is output. The outside can control the electromagnet 16 to cut off the circuit breaker circuit, and the external staff can monitor the working status of the circuit breaker in real time. After the electromagnet 16 is energized, the electromagnet 16 is adsorbed by the armature 15, so that the upper part of the elastic hook plate 12 is deflected to the left, and under the elastic force of the supporting spring 9, the conductive driving lever 6 is pushed to rotate clockwise. Elastic hook plate 12 adopts elastic material, after 16 power failures, elastic hook plate 12 resets.

The coil 14 is connected to the circuit of the photovoltaic power generation circuit breaker. When the circuit of the photovoltaic power generation circuit breaker fluctuates greatly, the coil 14 generates a magnetic field, which has a leftward thrust on the magnet bar 13, so that the 13 and the elastic hook plate 12 are pushed and tilted, so that the electric conduction The driving lever 6 rotates clockwise under the elastic force of the supporting spring 9 .

It can also be manually cut off from the outside, specifically by holding an insulating rod and pushing it to the manual push block 7 through the through slot 8, so that the manual push block 7 is pushed to rotate clockwise, and the static conductive block 5 and the conductive lever 6 are separated.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and without departing from the spirit or fundamentals of the present invention. The present invention can be realized in other specific forms under the condition of certain characteristics; therefore, the embodiments should be regarded as exemplary and non-restrictive in every respect, and the scope of the present invention is determined by the appended claims. Requirements rather than the above description, therefore, it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any reference signs in the claims should not be regarded as limiting the rights involved. Require.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (6)

1. A circuit breaker for intelligent photovoltaic power generation, characterized in that it comprises: The outer casing (1), the outer casing (1) is hollow in shape, the left and right side walls of the outer casing (1) are provided with wire holes (2), the inner left and right sides of the outer casing (1) and The position corresponding to the wire hole (2) is respectively provided with an outlet connector (4) and an inlet connector (3); The right side of the inside of the outer shell (1) is rotatably connected with a conductive lever (6) through a pin shaft, and the lower left side of the incoming line connector (3) is provided with a static contact that can contact and conduct electricity with the conductive lever (6). The conductive block (5), the right side of the conductive lever (6) is provided with a support spring (9), and the right end of the support spring (9) is connected to the inner wall of the outer casing (1); The top of the conductive lever (6) is provided with an arc-shaped insulating plate (10), and the top of the outer casing (1) is provided with a handle capable of swinging the conductive lever (6) and the arc-shaped insulating plate (10). (11), the left side of the outer casing (1) is provided with an elastic hook plate (12), and the upper right side of the elastic hook plate (12) is provided with a bump; The right side wall of the elastic hook plate (12) is provided with a magnet rod (13), and a coil (14) is arranged outside the magnet rod (13), and the coil (14) is connected to the circuit of the circuit breaker , the coil (14) produces a magnetic force that pushes the magnet bar (13) and the elastic hook plate (12) to the left after being energized; The conductive lever (6) is connected with the outlet joint (4) through a wire; A detection circuit (17) is provided at the bottom end of the inner cavity of the outer casing (1), and the detection circuit (17) includes a measurement circuit module connected to the conductive lever (6) wire, and the output of the measurement circuit module The terminal is connected to the acquisition module, the output terminal of the acquisition module is connected to the processing chip, and the processing chip is externally connected to the communication circuit; The measurement circuit module performs real-time measurement of the current, voltage, frequency, and power of the circuit breaker and reactive energy measurement to obtain a measurement value, which is collected centrally by the acquisition module, and the measurement value is output to the processing chip, and the processing chip The metering value is sent and instructions are received based on the communication circuit, and a remote control for communication through the communication circuit is provided externally. 2. An intelligent circuit breaker for photovoltaic power generation according to claim 1, characterized in that: the left side wall of the elastic hook plate (12) is provided with an armature (15), and the outer shell (1) An electromagnet (16) corresponding to the armature (15) is arranged on the left side of the interior, and a battery (18) is also arranged inside the outer casing (1), and the battery (18) is electrically connected to the electromagnet (16) , the processing chip outputs the on-off power of the control electromagnet (16). 3. An intelligent circuit breaker for photovoltaic power generation according to claim 1, characterized in that: the upper surface of the outer casing (1) is provided with adjustment holes on the left and right sides, and the adjustment holes are respectively connected to the outlet connectors ( 4) The position of the incoming line connector (3) is corresponding. 4. An intelligent circuit breaker for photovoltaic power generation according to claim 1, characterized in that: the right side wall of the conductive lever (6) is provided with a manual push block (7), and the outer casing (1 ) is provided with a slot (8) corresponding to the position of the manual push block (7) on the upper surface. 5. An intelligent circuit breaker for photovoltaic power generation according to claim 1, characterized in that: the side wall of the handle (11) is provided with a protrusion, and when the handle (11) is turned right to the end of the stroke , the left end of the arc-shaped insulating plate (10) is pressed down and stuck on the raised underside of the elastic hook plate (12). 6. An intelligent photovoltaic power generation circuit breaker according to claim 1, characterized in that: the outer casing (1) is an insulating plastic outer casing.

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