Power distribution cabinet with arc extinguishing function for intelligent power distribution station

Abstract

The invention discloses a power distribution cabinet with an arc extinguishing function for an intelligent power distribution station, and relates to the technical field of power distribution cabinets, the power distribution cabinet comprises a power distribution cabinet main body and a controller, the power distribution cabinet main body comprises a box body, and the box body is internally provided with an arc extinguishing assembly, a sensing assembly and an adjusting assembly; the arc extinguishing assembly, the induction assembly and the adjusting assembly are respectively connected with the controller, the arc extinguishing assembly is connected with the adjusting assembly, and the arc extinguishing assembly is installed on a flip cover of the box body, so that when the device is used, the induction assembly can monitor the interior of the power distribution cabinet main body in real time, and once the generation of an arc is detected, the arc extinguishing assembly is started; the induction assembly can quickly and accurately determine the specific position of an electric arc, and the adjusting assembly flexibly adjusts the position of the arc extinguishing assembly through accurate mechanical transmission or other appropriate driving modes, so that the arc extinguishing assembly quickly moves to the position of the electric arc, and the electric arc is eliminated through the arc extinguishing assembly.

Description

TECHNICAL FIELD

[0001] The application relates to the field of power distribution cabinets, in particular to a power distribution cabinet with arc extinguishing function for intelligent power distribution stations. BACKGROUND

[0002] The power distribution cabinet is an indispensable device in the power system, which plays a key role in distributing electric energy, controlling circuits and protecting electrical equipment, etc. In the actual operation process of the existing power distribution cabinet, due to long-term use, equipment aging, environmental factors and various reasons, the risk of electric arc is difficult to completely avoid, and the traditional power distribution cabinet often lacks effective arc extinguishing means, once the electric arc is generated, a series of serious problems may be caused, such as equipment damage, power failure, and even endanger personnel safety. SUMMARY

[0003] The purpose of the application is to provide a power distribution cabinet with arc extinguishing function for intelligent power distribution stations to solve the problems in the prior art.

[0004] To achieve the above purpose, the application provides the following technical scheme: a power distribution cabinet with arc extinguishing function for intelligent power distribution stations, comprising a power distribution cabinet body and a controller, the power distribution cabinet body comprises a box body, an arc extinguishing assembly, a sensing assembly and an adjusting assembly are installed in the box body, the arc extinguishing assembly, the sensing assembly and the adjusting assembly are connected with the controller respectively, the arc extinguishing assembly is connected with the adjusting assembly, and the arc extinguishing assembly is installed on the flip cover of the box body. The sensing assembly can detect the position of the electric arc, the adjusting assembly changes the position of the arc extinguishing assembly according to the sensing of the sensing assembly, and the arc extinguishing assembly can extinguish the electric arc.

[0005] Further, the sensing assembly judges the position of the electric arc through the waveform of the current, and the arc extinguishing assembly can eliminate the electric arc by using ion wind.

[0006] Further, a slot is arranged on the flip cover of the box body, a filter screen is arranged outside the slot, the adjusting assembly is installed on the slot, the arc extinguishing assembly is installed between the adjusting assemblies, the arc extinguishing assembly comprises a limiting frame, arc extinguishing sheets and two groups of copper pipes are installed between the limiting frame, the output surface of the arc extinguishing sheet is located between the two groups of copper pipes, and the arc extinguishing sheet and the two groups of copper pipes are connected with the controller respectively.

[0007] Further, the output surface of the arc extinguishing sheet is provided with equidistant sawtooth grooves, and the copper pipes are in the shape of an ellipse.

[0008] Further, when the arc extinguishing sheet is electrified: the voltage breaks through the air to form charged ions, and the charged ions move from the strong pole to the weak pole to form ion wind.

[0009] Further, the adjusting assembly comprises adjusting cylinders, a plurality of fixed frames and a plurality of adjusting plates, the fixed frame is installed on the inner side of the cover, the adjusting plate is slidingly installed on the side of the fixed frame away from the cover of the box body, the adjusting cylinder is installed between each group of fixed frames, and the output end of each group of adjusting cylinders is connected with the adjusting plate.

[0010] Further, the limiting frame is connected with the fixed frame and the adjusting plate through bearings on the side, and the adjusting cylinder can change the output direction of the arc extinguishing piece when driving the adjusting plate to move.

[0011] Further, the sensing assembly comprises a plurality of current transformers and a plurality of Rogowski coils, the current transformers and the Rogowski coils are equidistantly installed in the power distribution cabinet body, and the current transformers and the Rogowski coils are connected with the controller.

[0012] Further, the current transformer and the Rogowski coil can change the output direction of the ion wind when sensing the arc generation position.

[0013] Further, the controller is installed on the inner side of the cover of the box body, the control panel is installed on the outer side of the cover of the box body, and the control panel is connected with the controller through a wire electric signal.

[0014] Compared with the prior art, the beneficial effects of the present application are: 1. Therefore, when the device is used, the sensing assembly can monitor the power distribution cabinet body in real time, and once the arc is detected, the sensing assembly can quickly and accurately determine the specific position of the arc, the adjusting assembly can flexibly adjust the position of the arc extinguishing assembly by precise mechanical transmission or other suitable driving modes, so that the arc extinguishing assembly can be quickly moved to the position of the arc, and the arc can be eliminated by the arc extinguishing assembly; 2. The arc extinguishing assembly uses ion wind, and since the arc itself is a charged particle, if the ion wind carries charges opposite to the polarity of the arc, the opposite polarity charges can neutralize the charged particles in the arc, directly and quickly reduce the charge density in the arc area, sharply reduce the conductivity of the arc area, and thus extinguish the arc. In addition, the power distribution cabinet also has intelligent feedback and recording functions, and after completing an arc extinguishing operation, the controller can record and store the time, position, intensity of the arc and related data of the arc extinguishing process. These data can provide important reference basis for subsequent maintenance and fault elimination, and help technicians analyze the causes of the arc. 3、The induction assembly of the device can efficiently and accurately monitor the current situation inside the power distribution cabinet body through the cooperation of the current transformer and the Rogowski coil, the current transformer can convert large current into small current according to a certain proportion, which is convenient for subsequent measurement and analysis; the Rogowski coil has good linearity and transient response characteristics, and can quickly respond to changes in current, when there is current passing through the power distribution cabinet body, the current transformer and the Rogowski coil will collect current signals in real time, and transmit these signals to the controller, the controller will analyze and process these signals, once the current waveform is detected to have abnormal change, it can be judged that there is arc, and according to the signal difference collected by the current transformer and the Rogowski coil at different positions, the specific position of the arc can be accurately judged. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the overall structural schematic diagram of the application; Figure 2 It is the axonometric structural schematic diagram of the box body of the application; Figure 3 It is the structural schematic diagram of the opening of the flip cover of the box body of the application; Figure 4 It is the local structural schematic diagram of the box body of the application; Figure 5 It is the structural schematic diagram of the inside of the flip cover of the application; Figure 6 It is the structural schematic diagram of the arc extinguishing assembly and the adjusting assembly of the application; Figure 7 It is the structural schematic diagram of the arc extinguishing assembly and the adjusting assembly of the application; Figure 6 It is the enlarged schematic diagram of "A" in the application.

[0016] In the figure: 1, power distribution cabinet body;11, box body;12, slot;2, arc extinguishing assembly;21, limiting frame;22, arc extinguishing sheet;23, copper pipe;3, induction assembly;31, current transformer;32, Rogowski coil;4, adjusting assembly;41, adjusting cylinder;42, fixed frame;43, adjusting plate;5, controller. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, not all. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the application.

[0018] Embodiment: as Figures 1-7As shown, the present invention provides a technical solution for a power distribution cabinet with arc extinguishing function for a smart power distribution station, including a power distribution cabinet body 1 and a controller 5. The power distribution cabinet body 1 includes a box 11. An arc extinguishing component 2, a sensing component 3 and an adjusting component 4 are installed inside the box 11. The arc extinguishing component 2, the sensing component 3 and the adjusting component 4 are respectively connected to the controller 5. The arc extinguishing component 2 is connected to the adjusting component 4. The arc extinguishing component 2 is installed on the flip cover of the box 11. The sensing component 3 can detect the position of the electric arc, and the adjusting component 4 changes the position of the arc extinguishing component 2 according to the sensing component 3, so that the arc extinguishing component 2 can extinguish the electric arc. Therefore, during operation, the sensing component 3 monitors the interior of the main body 1 of the distribution cabinet in real time. Once an arc is detected, the sensing component 3 quickly and accurately determines the specific location of the arc and transmits this location information to the controller 5. Upon receiving the information, the controller 5 immediately issues a command to the adjusting component 4. The adjusting component 4 then begins operation according to the command. It flexibly adjusts the position of the arc-extinguishing component 2 through precise mechanical transmission or other suitable driving methods, causing it to quickly move to the location of the arc. The arc-extinguishing component 2 uses ion wind. Since the arc itself consists of charged particles, if the ion wind carries a charge with the opposite polarity to the arc... These opposite polarity charges neutralize the charged particles in the arc, directly and rapidly reducing the charge density in the arc region, causing a sharp decrease in its conductivity, thereby extinguishing the arc. In addition, the distribution cabinet also has intelligent feedback and recording functions. After completing an arc extinguishing operation, the controller 5 will record and store the time, location, intensity of the arc, and relevant data of the arc extinguishing process. This data can provide important reference for subsequent maintenance and troubleshooting, helping technicians analyze the causes of arc generation, thereby taking corresponding measures to optimize the performance of the distribution cabinet, reduce the risk of arc generation, and improve the safety and stability of the entire intelligent distribution station.

[0019] like Figures 1-7 As shown, in this embodiment, specifically, the sensing component 3 determines the position of the electric arc by the waveform of the current, and the arc extinguishing component 2 can eliminate the electric arc by using ion wind; Therefore, when current flows through the main body 1 of the distribution cabinet, the sensing component 3 continuously monitors and analyzes the waveform of the current. Because the waveform of the current changes significantly when an electric arc is generated, it differs significantly from the waveform during normal operation. This allows the specific location of the electric arc to be determined. Once the location of the electric arc is determined, the arc extinguishing component 2 begins to function. Ion wind is shot towards the arc area at high speed. At the moment of contact with the arc, the ion wind not only neutralizes the charged particles in the arc but also generates a strong impact force on the arc, destroying the stable structure of the arc and preventing it from maintaining its combustion state. At the same time, the ion wind can also carry away the heat generated by the arc, reducing the temperature of the arc area and further promoting the extinction of the arc. Moreover, the generation process of the ion wind is relatively stable and is not greatly affected by environmental factors, enabling it to continuously and efficiently perform arc extinguishing under different operating conditions.

[0020] like Figures 1-3 and Figures 5-7 As shown in this embodiment, specifically, the cover of the box 11 is provided with a slot 12, a filter screen is provided outside the slot 12, an adjustment component 4 is installed on the slot 12, an arc extinguishing component 2 is installed between the adjustment components 4, the arc extinguishing component 2 includes a limit frame 21, an arc extinguishing plate 22 and two sets of copper pipes 23 are installed between the limit frames 21, the output surface of the arc extinguishing plate 22 is located between the two sets of copper pipes 23, and the arc extinguishing plate 22 and the two sets are respectively connected to the controller 5; The cover of the enclosure 11 has a slot 12, which provides the necessary space and channel for the operation of the arc extinguishing component 2. When the sensing component 3 detects the arc and adjusts the position of the arc extinguishing component 2 through the adjusting component 4, the slot 12 allows the arc extinguishing component 2 to guide the ion wind to the area where the arc is located more smoothly, thereby enhancing the arc extinguishing effect. On the other hand, the filter screen set outside the slot 12 plays a key protective role. The filter screen can effectively block dust, debris and other impurities from entering the interior of the enclosure 11, preventing these impurities from damaging the arc extinguishing component 2, sensing component 3 and adjusting component 4, thereby ensuring the normal operation and service life of each component of the power distribution cabinet.

[0021] like Figure 7 As shown in this embodiment, specifically, the output surface of the arc extinguishing plate 22 is provided with equidistant sawtooth grooves, and the copper tube 23 is elliptical. The equidistant sawtooth grooves on the output surface of the arc extinguishing plate 22 play an important role. These grooves can increase the contact area between the arc extinguishing plate 22 and the electric arc. When the ion wind carries opposite polarity charges and blows towards the electric arc, more charged particles can neutralize the charged particles in the electric arc at the grooves, improving the neutralization efficiency and thus more effectively reducing the charge density in the electric arc region. At the same time, the sawtooth grooves can also disrupt the electric arc morphology, making the combustion state of the electric arc more unstable, further destroying the stable structure of the electric arc, and accelerating the extinction of the electric arc. The elliptical design of the copper tube 23 also has its unique advantages. Compared with the circular copper tube 23, the elliptical copper tube 23 has a longer circumference for the same cross-sectional area. This means that when the ion wind passes through the copper tube 23, the contact area with the inner wall of the copper tube 23 is larger, which can more fully carry the charge on the copper tube 23 and enhance the charging ability of the ion wind.

[0022] like Figures 1-7 As shown in this embodiment, specifically, when the arc extinguishing plate 22 is energized: the voltage breaks down the air to form charged ions, and the charged ions move from the strong pole to the weak pole, thereby forming an ion wind; This method of forming an ion wind by breaking down the air with voltage is efficient and stable. When the arc extinguishing plate 22 is energized, the air around it is rapidly ionized under the action of high voltage, generating a large number of charged ions. Since the arc extinguishing plate 22 has strong and weak poles, the charged ions will naturally move from the strong pole to the weak pole, thereby forming an ion wind with a certain speed and direction. The formation process of this ion wind can be completed in a short time and can respond promptly to the arc situation detected by the sensing component 3.

[0023] like Figures 5-7 As shown, in this embodiment, specifically, the adjustment component 4 includes an adjustment cylinder 41, several fixed frames 42 and several adjustment plates 43. The fixed frames 42 are installed on the inside of the flip cover. The adjustment plates 43 are slidably installed on the side of the fixed frames 42 away from the flip cover of the box body 11. An adjustment cylinder 41 is installed between each group of fixed frames 42. The output end of each group of adjustment cylinders 41 is connected to the adjustment plate 43 respectively. When the device is in use, the adjusting cylinder 41 will extend and retract according to the instructions from the controller 5. When the sensing component 3 detects the arc and determines its position, the controller 5 converts the position information into an action command for the adjusting cylinder 41. The adjusting cylinder 41 starts to work, and its output end pushes the adjusting plate 43 connected to it to slide on the fixed frame 42. The coordinated sliding of several adjusting plates 43 can accurately adjust the position of the arc extinguishing component 2, so that it can quickly and accurately align with the position where the arc is generated. The sliding design of the adjusting plate 43 on the fixed frame 42 ensures the stability and accuracy of the movement. The fixed frame 42 provides stable support and sliding track for the adjusting plate 43, so that the adjusting plate 43 will not deviate or shake during the movement, ensuring that the arc extinguishing component 2 can move to the designated position according to the predetermined route.

[0024] like Figures 1-7 As shown, in this embodiment, specifically, one side of the limiting frame 21 is connected to the fixed frame 42 and the adjusting plate 43 respectively through bearings. When the adjusting cylinder 41 drives the adjusting plate 43 to move, it can change the output direction of the arc extinguishing plate 22. Since the limiting frame 21 is connected to the fixed frame 42 and the adjusting plate 43 by a bearing on one side, when the adjusting cylinder 41 drives the adjusting plate 43 to move, this connection method allows the output direction of the arc extinguishing plate 22 to be flexibly changed. The adjusting plate 43 slides on the fixed frame 42 under the push of the adjusting cylinder 41. The bearing connection between the limiting frame 21 and the adjusting plate 43 and the fixed frame 42 gives the arc extinguishing plate 22 a certain degree of rotational freedom. When the adjusting plate 43 moves, it will drive the limiting frame 21 to rotate through the bearing, thereby changing the output direction of the arc extinguishing plate 22.

[0025] like Figure 4 As shown, in this embodiment, specifically, the sensing component 3 includes a plurality of current transformers 31 and a plurality of Rogowski coils 32. The plurality of current transformers 31 and the plurality of Rogowski coils 32 are installed equidistantly inside the main body 1 of the power distribution cabinet, and the current transformers 31 and the Rogowski coils 32 are respectively connected to the controller 5. The sensing component 3 of this device, through the coordinated operation of the current transformer 31 and the Rogowski coil 32, can efficiently and accurately monitor the current situation inside the main body 1 of the distribution cabinet. The current transformer 31 can convert a large current into a small current according to a certain ratio, which is convenient for subsequent measurement and analysis. The Rogowski coil 32 has good linearity and transient response characteristics, and can quickly respond to changes in current. When current flows through the main body 1 of the distribution cabinet, the current transformer 31 and the Rogowski coil 32 will collect current signals in real time and transmit these signals to the controller 5. The controller 5 will analyze and process these signals. Once an abnormal change in the current waveform is detected, it can be determined that an electric arc has been generated. At the same time, based on the difference in signals collected by the current transformer 31 and the Rogowski coil 32 at different locations, the specific location of the electric arc can be accurately determined.

[0026] like Figures 1-7 As shown, in this embodiment, specifically, when the current transformer 31 and the Rogowski coil 32 sense the location where the electric arc is generated, the regulating cylinder 41 drives the regulating plate 43 to change the output direction of the ion wind. Therefore, when the current transformer 31 and the Rogowski coil 32 sense the location of the arc, they quickly transmit the location information to the controller 5. Upon receiving the information, the controller 5 immediately sends a command to the regulating cylinder 41, which then begins to operate. The regulating cylinder 41 moves the regulating plate 43. Since one side of the limiting frame 21 is connected to the fixed frame 42 and the regulating plate 43 via a bearing, the movement of the regulating plate 43 will cause the limiting frame 21 to rotate via the bearing, thereby changing the output direction of the arc-extinguishing plate 22, allowing the ion wind to accurately target the location of the arc. This precise adjustment method ensures that the ion wind acts on the arc at the optimal angle and direction, maximizing the arc-extinguishing effect.

[0027] like Figures 1-3 and Figure 5As shown, in this embodiment, specifically, a controller 5 is installed inside the flip cover of the housing 11, and a control panel is installed outside the flip cover of the housing 11. The control panel and the controller 5 are connected by wires and electrical signals. Therefore, when the device is in use, the operator can input various instructions and parameter settings to the controller 5 through the control panel. After receiving the instructions from the control panel, the controller 5 will make corresponding adjustments and controls to the various components of the power distribution cabinet to meet different usage requirements.

[0028] Working Principle: During operation, the sensing component 3 monitors the interior of the main body 1 of the distribution cabinet in real time. Once an arc is detected, the sensing component 3 quickly and accurately determines the specific location of the arc and rapidly transmits this location information to the controller 5. Upon receiving the information, the controller 5 immediately issues a command to the adjusting component 4. The adjusting component 4 then begins operation, flexibly adjusting the position of the arc-extinguishing component 2 through precise mechanical transmission or other suitable driving methods, causing it to quickly move to the location of the arc. The arc-extinguishing component 2 uses ion wind; since the arc itself consists of charged particles, if the ion wind carries particles with opposite polarity to the arc... The opposing charges neutralize the charged particles in the arc, directly and rapidly reducing the charge density in the arc region, causing a sharp decrease in conductivity and thus extinguishing the arc. Furthermore, the distribution cabinet also features intelligent feedback and recording functions. After completing an arc extinguishing operation, the controller 5 records and stores the time, location, intensity, and relevant data of the arc generation process. This data provides important reference for subsequent maintenance and troubleshooting, helping technicians analyze the causes of arc generation and take appropriate measures to optimize the performance of the distribution cabinet, reduce the risk of arc generation, and improve the safety and stability of the entire intelligent power distribution station.

[0029] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A distribution cabinet with arc extinguishing function for a smart distribution station, comprising a distribution cabinet body (1) and a controller (5), characterized in that: The main body (1) of the power distribution cabinet includes a box (11), and an arc extinguishing component (2), a sensing component (3) and an adjusting component (4) are installed inside the box (11). The arc extinguishing component (2), the sensing component (3) and the adjusting component (4) are respectively connected to the controller (5). The arc extinguishing component (2) is connected to the adjusting component (4). The arc extinguishing component (2) is installed on the flip cover of the box (11). The sensing component (3) can detect the position of the electric arc, and the adjusting component (4) changes the position of the arc extinguishing component (2) according to the sensing component (3). The arc extinguishing component (2) can extinguish the electric arc.

2. A distribution cabinet with arc-extinguishing function for an intelligent distribution station according to claim 1, characterized in that: The sensing component (3) determines the location of the electric arc by the waveform of the current, and the arc extinguishing component (2) can eliminate the electric arc by using ion wind.

3. A distribution cabinet with arc-extinguishing function for an intelligent distribution station according to claim 2, characterized in that: The box (11) has a slot (12) on its flip cover. A filter screen is provided outside the slot (12). An adjustment component (4) is installed on the slot (12). The arc extinguishing component (2) is installed between the adjustment components (4). The arc extinguishing component (2) includes a limit frame (21). An arc extinguishing plate (22) and two sets of copper tubes (23) are installed between the limit frames (21). The output surface of the arc extinguishing plate (22) is located between the two sets of copper tubes (23). The arc extinguishing plate (22) and the two sets are connected to the controller (5) respectively.

4. A distribution cabinet with arc-extinguishing function for an intelligent distribution station according to claim 3, characterized in that: The output surface of the arc extinguishing plate (22) is provided with equidistant sawtooth grooves, and the copper tube (23) is elliptical.

5. A distribution cabinet with arc-extinguishing function for an intelligent distribution station according to claim 4, characterized in that: When the arc-extinguishing plate (22) is energized: the voltage breaks down the air to form charged ions, and the charged ions move from the strong pole to the weak pole, thus forming an ion wind.

6. A distribution cabinet with arc-extinguishing function for an intelligent distribution station according to claim 5, characterized in that: The adjustment assembly (4) includes an adjustment cylinder (41), several fixed frames (42) and several adjustment plates (43). The fixed frames (42) are installed on the inside of the flip cover. The adjustment plates (43) are slidably installed on the side of the fixed frames (42) away from the flip cover of the box body (11). The adjustment cylinder (41) is installed between each group of fixed frames (42). The output end of each group of adjustment cylinders (41) is connected to the adjustment plate (43).

7. A distribution cabinet with arc-extinguishing function for an intelligent distribution station according to claim 6, characterized in that: The limiting frame (21) is connected to the fixed frame (42) and the adjusting plate (43) on one side by bearings. When the adjusting cylinder (41) drives the adjusting plate (43) to move, it can change the output direction of the arc extinguishing plate (22).

8. A distribution cabinet with arc-extinguishing function for an intelligent distribution station according to claim 7, characterized in that: The sensing component (3) includes several current transformers (31) and several Rogowski coils (32). The several current transformers (31) and several Rogowski coils (32) are installed at equal intervals inside the main body (1) of the power distribution cabinet. The current transformers (31) and the Rogowski coils (32) are respectively connected to the controller (5).

9. A distribution cabinet with arc-extinguishing function for an intelligent distribution station according to claim 8, characterized in that: When the current transformer (31) and the Rogowski coil (32) sense the location of the electric arc, the regulating cylinder (41) drives the regulating plate (43) to change the output direction of the ion wind.

10. A distribution cabinet with arc-extinguishing function for an intelligent distribution station according to claim 9, characterized in that: The controller (5) is installed inside the flip cover of the box (11), and the control panel is installed outside the flip cover of the box (11). The control panel and the controller (5) are connected by wires and electrical signals.

Images