Control system of circuit breaker and control method based on control system of circuit breaker

Abstract

The present application proposes a control system for a circuit breaker and a control method based on the control system of the circuit breaker, wherein the control system of the circuit breaker includes: a driving board, a main control board, an opening toggle switch, a closing toggle switch and a circuit breaker; wherein the main control board includes a processor, the driving board is connected to the processor and the circuit breaker respectively, and the processor is also connected to the opening toggle switch and the closing toggle switch respectively; wherein the main control board is used to obtain the switch flag and the switch triggered signal through the processor, and realize the control of the circuit breaker based on the driving board according to the switch flag and the switch triggered signal; wherein the switch flag includes an opening flag and a closing flag. Thus, by setting the switch flag, the main control board realizes the control of the circuit breaker based on the driving board according to the switch flag and the switch triggered signal through the processor, which will not cause the possibility of the circuit breaker being triggered by mistake, and the performance of the circuit breaker can be accurately tested.

Description

Technical Field

[0001] The present application relates to the field of power electronics technology, and in particular to a control system of a circuit breaker and a control method based on the control system of the circuit breaker. Background Art

[0002] At present, due to the high reliability and controllability of DC transmission systems, DC transmission systems have been widely used in fields such as offshore wind power grid connection. However, due to the low impedance of the DC transmission system, when a fault occurs, it is necessary to detect and cut off the fault current within a few milliseconds to protect the entire system and the equipment on the system. In order to ensure the safety of the equipment to a greater extent, circuit breakers are used. The function of the circuit breaker is to be able to shut down or connect the load circuit to ensure that the equipment is not damaged and reduce safety hazards. However, in order to ensure the performance of the circuit breaker, the circuit breaker needs to be tested for performance before it leaves the factory. During the test, the circuit breaker may be triggered by mistake, resulting in the inability to accurately test the performance of the circuit breaker. Summary of the invention

[0003] The present application aims to solve one of the technical problems in the related art at least to some extent.

[0004] To this end, the first purpose of the present application is to propose a control system for a circuit breaker. By setting the switch flag, the main control board uses the processor to control the circuit breaker based on the switch flag and the switch trigger signal, thereby preventing the circuit breaker from being accidentally triggered and accurately testing the performance of the circuit breaker.

[0005] The second objective of the present application is to provide a control method based on a circuit breaker control system.

[0006] To achieve the above-mentioned purpose, the first aspect of the present application proposes a control system for a circuit breaker, the system comprising: a drive board, a main control board, an opening toggle switch, a closing toggle switch and a circuit breaker; wherein the main control board comprises a processor, the drive board is connected to the processor and the circuit breaker respectively, and the processor is also connected to the opening toggle switch and the closing toggle switch respectively; wherein the main control board is used to obtain a switch flag and a switch triggered signal through the processor, and according to the switch flag and the switch triggered signal, realize control of the circuit breaker based on the drive board; wherein the switch flag comprises an opening flag and a closing flag.

[0007] The control system of the circuit breaker of the embodiment of the present application includes: a driving board, a main control board, an opening toggle switch, a closing toggle switch and a circuit breaker; wherein the main control board includes a processor, the driving board is connected to the processor and the circuit breaker respectively, and the processor is also connected to the opening toggle switch and the closing toggle switch respectively; wherein the main control board is used to obtain the switch flag and the switch triggered signal through the processor, and realize the control of the circuit breaker based on the driving board according to the switch flag and the switch triggered signal; wherein the switch flag includes an opening flag and a closing flag. Thus, by setting the switch flag, the main control board realizes the control of the circuit breaker based on the driving board according to the switch flag and the switch triggered signal through the processor, which will not cause the possibility of the circuit breaker being triggered by mistake, and the performance of the circuit breaker can be accurately tested.

[0008] In addition, the control system of the circuit breaker provided in the first aspect of the present application may also have the following additional technical features:

[0009] According to one embodiment of the present application, the processor is specifically used to: determine that the switch flag is the disconnect flag, and when it is determined that the triggered switch is the closed toggle switch based on the switch trigger signal, control the circuit breaker to close based on the drive board.

[0010] According to one embodiment of the present application, the processor is further used to: after the circuit breaker is closed for a set time, control the circuit breaker to open based on the drive board, and set the switch flag to the closed flag.

[0011] According to one embodiment of the present application, the processor is specifically used to: determine that the switch flag is the closed flag, and when it is determined that the triggered switch is the disconnected toggle switch based on the switch trigger signal, set the switch flag to the disconnected flag.

[0012] According to an embodiment of the present application, the above-mentioned control system further includes: a display screen, which is connected to the processor and is used to display the state of the circuit breaker and the switch flag position.

[0013] To achieve the above-mentioned purpose, the second aspect embodiment of the present application proposes a control method for a control system based on a circuit breaker, including: obtaining a switch flag and a switch triggered signal; wherein the switch flag includes an open flag and a closed flag; and according to the switch flag and the switch triggered signal, realizing control of the circuit breaker based on the driving board.

[0014] According to the control method of the control system based on the circuit breaker of the embodiment of the present application, the switch flag and the switch triggered signal are first obtained, and the switch flag includes the open flag and the closed flag. Then, according to the switch flag and the switch triggered signal, the control of the circuit breaker based on the driver board is realized. Thus, by setting the switch flag, the main control board realizes the control of the circuit breaker based on the driver board according to the switch flag and the switch triggered signal through the processor, which will not cause the possibility of the circuit breaker being triggered by mistake, and the performance of the circuit breaker can be accurately tested.

[0015] In addition, the control method based on the control system of the circuit breaker proposed in the second aspect of the present application may also have the following additional technical features:

[0016] According to one embodiment of the present application, the control of the circuit breaker based on the drive board is implemented according to the switch flag and the switch triggered signal, including: determining that the switch flag is the disconnect flag, and when determining that the triggered switch is the closed toggle switch according to the switch triggered signal, controlling the circuit breaker to close based on the drive board.

[0017] According to an embodiment of the present application, after controlling the circuit breaker to close based on the driving board, it also includes: after a set time, controlling the circuit breaker to open based on the driving board; and setting the switch flag position to the closed flag position.

[0018] According to one embodiment of the present application, the control of the circuit breaker based on the driving board is implemented according to the switch flag and the switch triggered signal, including: determining that the switch flag is the closed flag, and when it is determined that the triggered switch is the disconnected toggle switch according to the switch triggered signal, the switch flag is set to the disconnected flag.

[0019] According to an embodiment of the present application, the above control method further includes: controlling the display screen to display the state of the circuit breaker and the switch flag position.

[0020] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0022] Figure 1 is a schematic diagram of a control system of a circuit breaker according to an embodiment of the present application;

[0023] Figure 2 is a schematic diagram of a control system of a circuit breaker according to an embodiment of the present application;

[0024] Figure 3 It is a flow chart of a control method of a control system based on a circuit breaker according to an embodiment of the present application. DETAILED DESCRIPTION

[0025] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0026] The control system of the circuit breaker and the control method based on the control system of the circuit breaker according to the embodiment of the present application are described below with reference to the accompanying drawings.

[0027] Figure 1 is a schematic diagram of a control system of a circuit breaker according to an embodiment of the present application.

[0028] like Figure 1 As shown, the control system 100 of the circuit breaker according to the embodiment of the present application includes: a driving board 110 , a main control board 120 , a circuit breaker 130 , an opening toggle switch 140 and a closing toggle switch 150 .

[0029] Among them, the main control board 120 includes a processor 121, the driving board 110 is connected to the processor 121 and the circuit breaker 130 respectively, and the processor 130 is also connected to the disconnect toggle switch 140 and the close toggle switch 150 respectively; wherein, the main control board 120 is used to obtain the switch flag and the switch triggered signal through the processor 121, and according to the switch flag and the switch triggered signal, realize the control of the circuit breaker 130 based on the driving board 110; wherein, the switch flag includes a disconnect flag and a close flag.

[0030] It should be noted that the circuit breaker 130 of the embodiment of the present application may be a DC circuit breaker based on series-parallel IGBTs, for example, it may include at least two switch units connected in series, and each switch unit includes two parallel IGBTs. The corresponding drive board 110 is an IGBT drive board.

[0031] Specifically, when the closing and opening functions of the circuit breaker 130 need to be tested, the control system of the circuit breaker is initialized first, and the switch flag position is the opening flag position, which may be 0, for example.

[0032] The program for testing the closing and opening functions of the circuit breaker 130 at the same time is called the interruption program 1. The tester needs to toggle or press the closing toggle switch 150 to control the processor 121 to execute the interruption program 1. Specifically, the processor 121 determines that the current switch flag is the opening flag, and determines that the received switch trigger signal is issued when the closing toggle switch 150 is toggled or pressed, then generates a set time conduction signal to the driver board 110, based on which the driver board 110 drives the IGBT to turn on, that is, the circuit breaker 130 is controlled to close. After the set time has passed, that is, the conduction time has arrived, the driver board 110 drives the IGBT to turn off, that is, the circuit breaker 130 is controlled to turn off, and at this time, the switch flag is set to the closed flag, which can be 1.

[0033] The program whose switch flag position is the disconnect flag position is called interruption program 2. The tester needs to toggle or press the disconnection toggle switch 140 to control the processor 121 to execute the interruption program 2. Specifically, the processor 121 determines that the current switch flag position is the closed flag position, and determines that it is issued when the disconnection toggle switch 140 is toggled or pressed according to the received switch trigger signal, and then sets the switch flag position to the disconnection flag position, which can be 0. In other words, the interruption program 2 can be triggered by toggling or pressing the disconnection toggle switch 140.

[0034] Therefore, the switch flag and interrupt program 2 of the present application are mainly used to prevent multiple triggering of interrupt program 1. After interrupt program 1 is triggered once, interrupt program 1 can only be triggered again after interrupt program 2 is triggered and the switch flag is set to the disconnect flag (such as 0).

[0035] In summary, the present application can freely set the closing time of the circuit breaker without causing false triggering. If the switch flag and interruption program 2 are not set, the interruption program 1 may be falsely triggered, causing the closing time of the circuit breaker to be inconsistent with the set time.

[0036] In order to facilitate testers to understand the status of the circuit breaker and the switch flag position, such as Figure 2 As shown, the control system further includes: a display screen 160 and a display light (not shown in the figure). The display screen 160 is connected to the processor 121 and is used to display the state of the circuit breaker 130 and the switch flag position.

[0037] In one embodiment of the present application, the processor 121 is specifically used to: determine that the switch flag is an open flag, and when it is determined that the triggered switch is a closed toggle switch 150 based on the switch trigger signal, control the circuit breaker 130 to close based on the drive board 110.

[0038] Furthermore, the processor 121 is also used for: after the circuit breaker 130 is closed for a set time, based on the driving board 110, controlling the circuit breaker 130 to open, and setting the switch flag position to a closed flag position.

[0039] Specifically, the tester needs to toggle or press the closed toggle switch 150 to control the processor 121 to execute the interrupt program 1. Specifically, the processor 121 determines whether the current switch flag is an open flag (such as 0) or a closed flag (such as 1). If the switch flag is determined to be an open flag (such as 0), and it is determined that the received switch trigger signal is sent when the closed toggle switch 150 is toggled or pressed, then a set time conduction signal is generated to the driver board 110, based on the driver board 110 driving the IGBT to conduct, that is, controlling the circuit breaker 130 to close, at this time, the display screen 160 displays "circuit breaker closed, switch flag is 0", and the control display light is lit. After the set time has passed, that is, the conduction time has arrived, the driver board 110 drives the IGBT to disconnect, that is, controlling the circuit breaker 130 to disconnect, and at this time, the switch flag is set to a closed flag, such as 1, at this time, the display screen displays "circuit breaker disconnected, switch flag is 1", and the control display light is off.

[0040] In one embodiment of the present application, the processor 121 is specifically used to: determine that the switch flag is a closed flag, and when it is determined that the triggered switch is an open toggle switch 140 based on the switch trigger signal, the switch flag is set to an open flag.

[0041] Specifically, the tester needs to toggle or press the disconnect toggle switch 140 to control the processor 121 to execute the interruption program 2. Specifically, the processor 121 determines that the current switch flag is the closed flag, and determines that it is issued when the disconnection toggle switch 140 is toggled or pressed according to the received switch trigger signal, and then sets the switch flag to the disconnection flag, which can be 0. At this time, the display screen displays "circuit breaker disconnected, switch flag is 0", and the control display light remains off. In other words, the interruption program 2 can be triggered by toggling or pressing the disconnection toggle switch 140.

[0042] The control system of the circuit breaker of the embodiment of the present application includes: a driving board, a main control board, an opening toggle switch, a closing toggle switch and a circuit breaker; wherein the main control board includes a processor, the driving board is connected to the processor and the circuit breaker respectively, and the processor is also connected to the opening toggle switch and the closing toggle switch respectively; wherein the main control board is used to obtain the switch flag and the switch triggered signal through the processor, and realize the control of the circuit breaker based on the driving board according to the switch flag and the switch triggered signal; wherein the switch flag includes an opening flag and a closing flag. Thus, by setting the switch flag, the main control board realizes the control of the circuit breaker based on the driving board according to the switch flag and the switch triggered signal through the processor, which will not cause the possibility of the circuit breaker being triggered by mistake, and the performance of the circuit breaker can be accurately tested.

[0043] In order to implement the above embodiment, the embodiment of the present application further proposes a control method based on a control system of a circuit breaker.

[0044] Figure 3 It is a flow chart of a control method of a control system based on a circuit breaker according to an embodiment of the present application.

[0045] like Figure 3 As shown, the control method based on the control system of the circuit breaker proposed in the embodiment of the present application includes:

[0046] S301, obtaining a switch flag and a switch triggered signal; wherein the switch flag includes an open flag and a closed flag.

[0047] S302, according to the switch flag and the switch triggered signal, the circuit breaker is controlled based on the driving board.

[0048] According to one embodiment of the present application, control of a circuit breaker based on a driving board is implemented according to a switch flag and a switch triggered signal, including: determining that the switch flag is an open flag, and when determining that the triggered switch is a closed toggle switch according to the switch triggered signal, the circuit breaker is controlled to close based on the driving board.

[0049] According to an embodiment of the present application, after the circuit breaker is closed based on the driving board, the method further includes: after a set time, the circuit breaker is opened based on the driving board; and the switch flag is set to a closed flag.

[0050] According to one embodiment of the present application, the process of resetting the switch flag includes: determining that the switch flag is a closed flag, and when determining that the triggered switch is an open toggle switch based on a switch trigger signal, setting the switch flag to an open flag.

[0051] According to an embodiment of the present application, the above control method further includes: controlling the display screen to display the state and switch flag position of the circuit breaker.

[0052] It should be noted that for details not disclosed in the control method based on the circuit breaker control system in the embodiment of the present application, please refer to the details disclosed in the circuit breaker control system in the embodiment of the present application, and the details will not be repeated here.

[0053] According to the control method of the control system based on the circuit breaker of the embodiment of the present application, the switch flag and the switch triggered signal are first obtained, and the switch flag includes the open flag and the closed flag. Then, according to the switch flag and the switch triggered signal, the control of the circuit breaker based on the driver board is realized. Thus, by setting the switch flag, the main control board realizes the control of the circuit breaker based on the driver board according to the switch flag and the switch triggered signal through the processor, which will not cause the possibility of the circuit breaker being triggered by mistake, and the performance of the circuit breaker can be accurately tested.

[0054] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0055] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0056] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0057] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0058] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0059] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A control system for a circuit breaker, characterized in that: include: A drive board, a main control board, an opening toggle switch, a closing toggle switch and a circuit breaker; wherein the main control board includes a processor, the drive board is connected to the processor and the circuit breaker respectively, and the processor is also connected to the opening toggle switch and the closing toggle switch respectively; The main control board is used to obtain the switch flag and the switch triggered signal through the processor, and realize the control of the circuit breaker based on the driving board according to the switch flag and the switch triggered signal; wherein the switch flag includes an open flag and a closed flag; The processor is specifically used for: When the switch flag is determined to be the disconnect flag, and the triggered switch is determined to be the closed toggle switch according to the switch trigger signal, the circuit breaker is controlled to be closed based on the driving board, and after the circuit breaker is closed for a set time, the circuit breaker is controlled to be disconnected based on the driving board, and the switch flag is set to the closed flag; Alternatively, when the switch flag is determined to be the closed flag, and when it is determined according to the switch trigger signal that the triggered switch is the open toggle switch, the switch flag is set to the open flag.

2. The circuit breaker control system according to claim 1, characterized in that: Also includes: A display screen is connected to the processor and is used to display the state of the circuit breaker and the switch flag position.

3. A control method for a circuit breaker control system according to claim 1 or 2, characterized in that: include: Acquire a switch flag and a switch triggered signal; wherein the switch flag includes an open flag and a closed flag; According to the switch flag and the switch triggering signal, the circuit breaker is controlled based on the driving board; Wherein, the control of the circuit breaker based on the driving board according to the switch flag and the switch trigger signal includes: When the switch flag is determined to be the disconnect flag and the triggered switch is determined to be the closed toggle switch according to the switch trigger signal, the circuit breaker is controlled to close based on the driving board; After a set time, the circuit breaker is controlled to be disconnected based on the driving board; Setting the switch flag position to the closed flag position; Alternatively, when the switch flag is determined to be the closed flag, and when it is determined according to the switch trigger signal that the triggered switch is the open toggle switch, the switch flag is set to the open flag.

4. The control method according to claim 3, characterized in that: Also includes: The control display screen displays the state of the circuit breaker and the switch flag position.

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