Control device and method of active forced bypass for nuclear power plant

Abstract

The invention provides an active forced bypass control device and method for a nuclear power plant. The control device comprises a first control module and a power supply module. The power supply module comprises an input module, an output module and a switch module; the first control module is used for collecting a first input voltage parameter of the input module and collecting an output voltage parameter, a current parameter and an operation state parameter of the output module under the condition that the abnormal signal sent by the main control module is received; when the first input voltage parameter is in a first preset range, the output voltage parameter is not in a second preset range, the current parameter is in a third preset range, and the control device is determined to be in a first state according to the operation state parameter, the switch module is controlled to be closed so as to conduct a power supply link between the input module and the output module; power is supplied to external equipment; and power failure of output is avoided.

Description

Technical Field

[0001] The present application relates to the field of control technology, and in particular to a control device and method for active forced bypass for a nuclear power plant. Background Art

[0002] In nuclear power plant applications, the inverter is divided into an inverter main power supply and a bypass main power supply, both of which are controlled by the inverter main control board. The inverter main control board determines whether it needs to switch to the bypass state by detecting whether the input voltage of the inverter main power supply can supply power normally. When the inverter bypass is controlled by a control board, there is a problem of power failure of the entire machine if a single board fails. Summary of the invention

[0003] The embodiment of the present application provides a control device and method for active forced bypass for a nuclear power plant, which can achieve output without power failure.

[0004] To achieve the above purpose, the technical solution of the embodiment of the present application is implemented as follows:

[0005] In a first aspect, the present application provides a control device for active forced bypass for a nuclear power plant, the control device comprising a first control module and a power supply module; the power supply module comprising: an input module, an output module and a switch module; the input end of the first control module is respectively connected to the output end of the input module, the output end of the output module, and the main control module; the output end of the first control module is connected to the control end of the switch module; the output end of the input module is connected to the first end of the switch module; the second end of the switch module is connected to the input end of the output module;

[0006] The first control module is used to collect the first input voltage parameter of the input module, and the output voltage parameter, current parameter and operating status parameter of the output module when receiving the abnormal signal sent by the main control module; and when the first input voltage parameter is within the first preset range, the output voltage parameter is not within the second preset range, the current parameter is within the third preset range, and it is determined according to the operating status parameter that the control device is in the first state, control the switch module to close so as to conduct the power supply link between the input module and the output module to power the external device.

[0007] In a second aspect, the present application provides a control method for active forced bypass for a nuclear power plant, the method comprising:

[0008] In case of receiving an abnormal signal sent by the main control module, the first input voltage parameter of the input module is collected, and the output voltage parameter, current parameter and operating status parameter of the output module are collected; and when the first input voltage parameter is within a first preset range, the output voltage parameter is not within a second preset range, the current parameter is within a third preset range, and it is determined according to the operating status parameter that the control device is in a first state, the switch module is controlled to close to conduct the power supply link between the input module and the output module to power the external device.

[0009] The present application provides a control device and method for active forced bypass for a nuclear power plant; the control device includes a first control module and a power supply module; the power supply module includes: an input module, an output module and a switch module; the input end of the first control module is respectively connected to the output end of the input module, the output end of the output module, and the main control module; the output end of the first control module is connected to the control end of the switch module; the output end of the input module is connected to the first end of the switch module; the second end of the switch module is connected to the input end of the output module; the first control module is used to collect the first input voltage parameter of the input module, the output voltage parameter, the current parameter and the operating status parameter of the output module when receiving an abnormal signal sent by the main control module; and when the first input voltage parameter is within a first preset range, the output voltage parameter is not within a second preset range, the current parameter is within a third preset range and the control device is determined to be in a first state according to the operating status parameter, the switch module is controlled to be closed to conduct the power supply link between the input module and the output module to power an external device. By adopting the technical solution of the present application, a first control module is added, and when an abnormal signal sent by the main control module is received, the first input voltage parameter of the input module is collected, and the output voltage parameter, current parameter and operating status parameter of the output module are collected. When the first input voltage parameter is within a first preset range, the output voltage parameter is not within a second preset range, the current parameter is within a third preset range, and it is determined according to the operating status parameter that the control device is in a first state, the switch module is controlled to be closed to conduct the power supply link between the input module and the output module. That is, when the main control module is abnormal, the first control module is used to close the power supply link between the input module and the output module, so that the external device can be stably powered and the output is not powered off. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 A schematic diagram of the structure of a control device for active forced bypass for a nuclear power plant provided in an embodiment of the present application;

[0011] Figure 2 A schematic structural diagram of another exemplary active forced bypass control device for a nuclear power plant provided in an embodiment of the present application;

[0012] Figure 3 A schematic structural diagram of another exemplary active forced bypass control device for a nuclear power plant provided in an embodiment of the present application;

[0013] Figure 4 A topological diagram of an exemplary control device provided in an embodiment of the present application;

[0014] Figure 5 A flow chart of a control method for active forced bypass for a nuclear power plant provided in an embodiment of the present application;

[0015] Figure 6 A schematic diagram of a control device for active forced bypass for a nuclear power plant provided in an embodiment of the present application Figure 1 ;

[0016] Figure 7 A schematic diagram of a control device for active forced bypass for a nuclear power plant provided in an embodiment of the present application Figure 2 . DETAILED DESCRIPTION

[0017] In order to enable a more detailed understanding of the features and technical contents of the embodiments of the present application, the implementation of the embodiments of the present application is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present application.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein are only for the purpose of describing the embodiments of this application and are not intended to limit this application.

[0019] In the following description, reference is made to "some embodiments", which describe a subset of all possible embodiments, but it is understood that "some embodiments" may be the same subset or different subsets of all possible embodiments, and may be combined with each other without conflict. It should also be noted that the terms "first\second" and the like involved in the embodiments of the present application are only used to distinguish similar objects and do not represent a specific ordering of the objects. It is understandable that "first\second" and the like may be interchanged in a specific order or sequence where permitted, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0020] Figure 1 A schematic diagram of the structure of a control device for active forced bypass for a nuclear power plant provided in an embodiment of the present application; Figure 2 A schematic structural diagram of another exemplary active forced bypass control device for a nuclear power plant provided in an embodiment of the present application; Figure 3A schematic diagram of the structure of another exemplary active forced bypass control device for a nuclear power plant provided in an embodiment of the present application; Figure 1 , Figure 2 and Figure 3 To illustrate, the control device 10 includes a first control module 101 and a power supply module 102; the power supply module 102 includes: an input module 1021, an output module 1022 and a switch module 1023; the input end of the first control module 101 is respectively connected to the output end of the input module 1021, the output end of the output module 1022, and the main control module 103; the output end of the first control module 101 is connected to the control end of the switch module 1023; the output end of the input module 1021 is connected to the first end of the switch module 1023; the second end of the switch module 1023 is connected to the input end of the output module 1022;

[0021] The first control module 101 is used for collecting the first input voltage parameter of the input module 1021 and the output voltage parameter, current parameter and operation status parameter of the output module 1022 when receiving an abnormal signal sent by the main control module 103; and when the first input voltage parameter is within the first preset range, the output voltage parameter is not within the second preset range, the current parameter is within the third preset range and it is determined according to the operation status parameter that the control device 10 is in the first state, controlling the switch module 1023 to close so as to conduct the power supply link between the input module 1021 and the output module 1022 to power the external device.

[0022] It should be noted that, in practical applications, the control device 10 for active forced bypass of a nuclear power plant can be understood as an inverter device for active forced bypass of a nuclear power plant.

[0023] In the embodiment of the present application, the first control module 101 can be understood as a control board. In practical applications, the first control module 101 can be called an independent bypass control board or an independent bypass thyristor (Silicon Controlled Rectifier, SCR) driver board. The main control module 103 can be understood as a control board. In practical applications, the main control module 103 can be called an inverter control board; the abnormal signal of the main control module 103 can be understood as an abnormal signal sent when the inverter control board fails or loses power, and the specific signal can be determined according to the actual situation.

[0024] In the embodiment of the present application, the first input voltage parameter being in the first preset range can be understood as the input voltage being within the normal operating range. The output voltage parameter not being in the second preset range can be understood as the output voltage being undervoltage. The current parameter being in the third preset range can be understood as the current parameter being within the normal current range.

[0025] It should be noted that the first preset range, the second preset range and the third preset range can be specifically determined according to the actual situation, and are not limited here. As an example, the first preset range can be 380±20 volts (V), the second preset range can be 380±20V, and the third preset range can be understood as the current setting value. As an example, the current parameter can be 4000 amperes (A). Among them, the current parameter being in the third preset range can be understood as the current parameter being less than or equal to the setting value, which can be exemplified as the current parameter being less than or equal to 4000A; the current parameter not being in the third preset range can be understood as the current parameter being greater than the setting value, which can be exemplified as the current parameter being greater than 4000A. Among them, the current parameter not being in the third preset range can be understood as the control device 10 generating a short circuit.

[0026] It should be noted that the current parameter can be understood as a current signal parameter, and the specific value can be 0 and 1 (0 is an abnormal situation, 1 is a normal situation). The third preset range can be 1. The current parameter being in the third preset range can be understood as the current parameter being 1; the current parameter not being in the third preset range can be understood as the current parameter not being 1 (that is, being 0).

[0027] In the embodiment of the present application, the first state can be understood as the control device 10 being in an inverter state, and can also be referred to as the control device 10 being in an inverter state. The external device can be understood as any device connected to the output module 1022, and can specifically be a load module.

[0028] In the embodiment of the present application, when the first input voltage parameter is within the first preset range, the output voltage parameter is not within the second preset range, the current parameter is within the third preset range, and the control device 10 is determined to be in the first state according to the operating state parameter, the control switch module 1023 is closed to conduct the power supply link between the input module 1021 and the output module 1022 to power the external device; it can be illustrated as follows: when the input voltage is within the normal operating range, the output voltage is undervoltage, the current parameter is within the normal current range, and the control device 10 is in the inverter state, the control switch module 1023 is closed to conduct the power supply link between the input module 1021 and the output module 1022 to power the subsequent load module. It should be noted that at this time, the control device 10 switches from the inverter state to the bypass state, and the bypass state can be referred to as the bypass state.

[0029] The solution of the embodiment of the present application is to add a first control module, and when an abnormal signal sent by the main control module is received, the first input voltage parameter of the input module is collected, and the output voltage parameter, current parameter and operating status parameter of the output module are collected. When the first input voltage parameter is within a first preset range, the output voltage parameter is not within a second preset range, the current parameter is within a third preset range, and it is determined according to the operating status parameter that the control device is in a first state, the switch module is controlled to be closed to conduct the power supply link between the input module and the output module. That is, when the main control module is abnormal, the first control module is used to close the power supply link between the input module and the output module, so that the external device can be stably powered and the output is not powered off.

[0030] In the embodiment of the present application, the switch module 1023 includes a first switch 10231 and a second switch 10232; the input module 1021 includes a first input unit 10211 and a second input unit 10212; the second end of the first switch 10231 and the second end of the second switch 10232 are connected in parallel to the input end of the output module 1022; the output end of the first input unit 10211 is connected to the first end of the first switch 10231; the output end of the second input unit 10212 is connected to the first end of the second switch 10232;

[0031] The first control module 101 is further configured to control the second switch 10232 to be disconnected and the first switch 10231 to be closed, so as to conduct the power supply link between the first input unit 10211 and the output module 1022, when it is determined according to the operating state parameter that the control device 10 is in the first state, the first input voltage parameter is in the first preset range, the output voltage parameter is not in the second preset range, and the current parameter is in the third preset range;

[0032] The first input unit 10211 is used to input the first alternating current to the output module 1022 to supply power to external devices.

[0033] It should be noted that the first input unit 10211 can be understood as a direct input unit, and can be illustrated as the first input unit 10211 directly inputting AC power from the mains to the output module 1022. The second input unit 10212 can be understood as an inverter input unit.

[0034] In the embodiment of the present application, the second input unit 10212 includes an input component 102121 and an inverter component 102122; the output end of the input component 102121 is connected to the input end of the inverter component 102122; the output end of the inverter component 102122 is connected to the first end of the second switch 10232;

[0035] The inverter component 102122 is used to receive the direct current sent by the input component 102121, and invert the direct current to obtain a second alternating current.

[0036] Among them, the input component 102121 can be understood as a DC input unit; the inverter component 102122 is used to invert the DC power sent by the input component 102121 to obtain a second AC power; it should be noted that the inverter component 102122 can be any inverter device. In practical applications, the inverter component 102122 can be two parallel insulated gate bipolar transistor (IGBT) modules. The main control module 103 achieves inversion by sampling and controlling the conduction of the IGBT. The specific example is that the inverter control board samples and controls the conduction of the IGBT by driving the adapter board, the inverter drive board and the IGBT adapter board.

[0037] It should be noted that the first switch 10231 is used to control the power supply link between the first input unit 10211 and the output module 1022 to be turned on or off, that is, when the first switch 10231 is closed, the power supply link between the first input unit 10211 and the output module 1022 is turned on; when the first switch 10231 is disconnected, the power supply link between the first input unit 10211 and the output module 1022 is disconnected.

[0038] Among them, the second switch 10232 is used to control the power supply link between the second input unit 10212 and the output module 1022 to be turned on or off, that is, when the second switch 10232 is closed, the power supply link between the second input unit 10212 and the output module 1022 is turned on; when the second switch 10232 is turned off, the power supply link between the second input unit 10212 and the output module 1022 is turned off.

[0039] It should be noted that when the first switch 10231 is closed, the second switch 10232 is open; when the first switch 10231 is open, the second switch 10232 is closed. In practical applications, the first switch 10231 can be recorded as SCR2, and the second switch 10232 can be recorded as SCR1.

[0040] It should be noted that the output voltage parameter is not within the second preset range and the current parameter is within the third preset range, which can be understood as an abnormality of non-hardware current limiting occurring in the control device 10 .

[0041] In the embodiment of the present application, the first control module 101 is further used to control the second switch 10232 to be disconnected and the first switch 10231 to be closed to conduct the power supply link between the first input unit 10211 and the output module 1022 when it is determined according to the operating state parameter that the control device 10 is in the first state, the first input voltage parameter is in the first preset range, the output voltage parameter is not in the second preset range, and the current parameter is in the third preset range, so as to connect the power supply link between the first input unit 10211 and the output module 1022; the first input unit 10211 is used to input the first alternating current to the output module 1022 to supply the external Equipment power supply; it can be understood that the first control module 101, when the control device is in the inversion state, the first input voltage parameter is within the normal operating range, the output voltage parameter is not within the normal operating range (that is, the output is undervoltage), and the current parameter is less than or equal to the set value, controls the second switch 10232 to open and controls the first switch 10231 to close to conduct the power supply link between the first input unit 10211 and the output module 1022, and the first input unit 10211 inputs the first alternating current to the output module 1022 to power the external device.

[0042] It should be noted that, before the first control module 101 determines according to the operating state parameters that the control device 10 is in the reverse state, the first input voltage parameter is within the normal operating range, the output voltage parameter is not within the normal operating range (i.e., the output is undervoltage), and the current parameter is greater than the set value, the first switch 10231 is disconnected and the second switch 10232 is closed, and the second input unit 10212 inputs the second alternating current to the output module 102 to power the external device. At this time, the first switch 10231 is controlled to be closed, the second switch 10232 is disconnected, and the second input unit 10212 is forced to switch to the first input unit 10211 inputting the first alternating current to the output module 1022 to power the external device.

[0043] In an embodiment of the present application, the first control module 101 is also used to control the first switch 10231 to be disconnected and the second switch 10232 to be closed to conduct the power supply link between the second input unit 10212 and the output module 102 when it is determined according to the operating state parameters that the control device 10 is in the first state, the first input voltage parameter is in the first preset range, the output voltage parameter is not in the second preset range, and the current parameter is not in the third preset range; the second input unit 10212 is used to input the second alternating current to the output module 102 to power the external device.

[0044] It should be noted that the output voltage parameter is not within the second preset range and the current parameter is not within the third preset range. It can be understood that the control device 10 is undervoltage due to hardware current limiting, that is, the control device 10 is short-circuited.

[0045] For ease of understanding, it can be illustrated as follows: the first control module 101, when it is determined according to the operating state parameters that the control device 10 is in an inverted state, the first input voltage parameter is within the normal operating range, the output voltage parameter is not within the normal operating range (i.e., the output is undervoltage), and the current parameter is greater than the set value, controls the first switch 10231 to be disconnected and controls the second switch 10232 to be closed to conduct the power supply link between the second input unit 10212 and the output module 102, and the second input unit 10212 inputs the second alternating current to the output module 102 to power the external device.

[0046] It should be noted that, before the first control module 101 determines according to the operating state parameters that the control device 10 is in the reverse state, the first input voltage parameter is within the normal operating range, the output voltage parameter is not within the normal operating range (i.e., the output is undervoltage), and the current parameter is greater than the set value, the first switch 10231 is disconnected and the second switch 10232 is closed, and the second input unit 10212 inputs the second alternating current to the output module 102 to power the external device. At this time, the power supply module between the second input unit 10212 and the output module 102 is maintained without switching.

[0047] In the embodiment of the present application, the control device 10 further includes a power supply unit 104 , which is connected to an input end of the first control module 101 ; the power supply unit 104 is used to supply power to the first control module 101 .

[0048] The power supply unit 104 may be understood as a device that supplies power to the first control module 101 alone. As an example, the power supply unit 104 may be an auxiliary source transformer.

[0049] In the embodiment of the present application, the control device 10 further includes a driving module 105; the input end of the driving module 105 is connected to the output end of the main control module 103; the output end of the driving module 105 is connected to the control end of the switch module 1023;

[0050] The main control module 103 is used to collect the second input voltage parameter of the first input unit 10211, and send a control signal to the driving module 105 when the second input voltage parameter is not within a fourth preset range;

[0051] The driving module 105 is used to drive the switch module 1023 to close based on the control signal, so as to conduct the power supply link between the input module 1021 and the output module 1022 to supply power to the external device.

[0052] It should be noted that, when there is no abnormality in the main control module 103 , the main control module 103 controls the closing of the switch module 1023 to conduct the power supply link between the input module 1021 and the output module 1022 .

[0053] In the embodiment of the present application, the fourth preset range can be determined according to the input voltage undervoltage range based on actual conditions; the second input voltage parameter not being within the fourth preset range can be understood as the second input voltage parameter being within the voltage normal operating range value. The normal operating range value of the second input voltage can be the same as or different from the normal operating range value of the first input voltage.

[0054] It should be noted that the driving module 105 can be any driving component and is not limited here; in practical applications, the driving module 105 can be exemplified as an inverter SCR driving board.

[0055] In the embodiment of the present application, the main control module 103 is used to collect the second input voltage parameter of the input unit 1021, and when the second input voltage parameter is not within the fourth preset range, send a control signal to the driving module 105; the driving module 105 is used to drive the switch module 1023 to close based on the control signal to conduct the power supply link between the input module 1021 and the output module 1022 to power the external device; it can be understood that the main control module 103 is used to collect the second input voltage parameter of the second input unit 10212, and when the second input voltage parameter is within the normal operating range of the voltage, send a control signal to the driving module 105, and the driving module 105 is used to drive the second switch 10232 to close based on the control signal to conduct the power supply link between the second input unit 10212 and the output module 1022. It should be noted that the main control module 103 can also send a control signal to the driving module 105, and the driving module is used to drive the first switch 10231 to close based on the control signal to conduct the power supply link between the first input unit 10211 and the output module 1022.

[0056] It should be noted that the control device 10 also includes an auxiliary source module, which is used to power the main control module 103 (inverter control board), the drive module 105 (inverter SCR drive board) and the first control module 101 (bypass control board), and can also power the above-mentioned drive connection board, inverter drive board and IGBT adapter board.

[0057] It should be noted that Figure 4 A topological diagram of an exemplary control device provided in an embodiment of the present application; Figure 4As shown, it includes a first input unit 10211 and an input component 102121, an inverter component 102122, a first switch 10231 (SCR2), a second switch 10232 (SCR1) and an output module 1022. The first alternating current of the first input unit 10211 is directly output to the output module 1022 through the first switch 10231, and the direct current of the input component 102121 is inverted by the inverter component 102122 and then output to the output module 1022 through the second switch 10232.

[0058] The solution of the embodiment of the present application is to add a first control module, and when an abnormal signal sent by the main control module is received, the first input voltage parameter of the input module is collected, and the output voltage parameter, current parameter and operating status parameter of the output module are collected. When the first input voltage parameter is within a first preset range, the output voltage parameter is not within a second preset range, the current parameter is within a third preset range, and it is determined according to the operating status parameter that the control device is in a first state, the switch module is controlled to be closed to conduct the power supply link between the input module and the output module. That is, when the main control module is abnormal, the first control module is used to close the power supply link between the input module and the output module, so that the external device can be stably powered and the output is not powered off.

[0059] An embodiment of the present application provides an electronic device, which is provided with a control device 10 as described in the above embodiment.

[0060] Based on the above-mentioned active forced bypass control device 10 for a nuclear power plant, the embodiment of the present application provides an active forced bypass control method for a nuclear power plant. Figure 5 A flow chart of a control method for active forced bypass for a nuclear power plant provided in an embodiment of the present application; Figure 5 As shown, the method includes:

[0061] S501. When an abnormal signal is received from the main control module, the first input voltage parameter of the input module is collected, and the output voltage parameter, current parameter and operating status parameter of the output module are collected; and when the first input voltage parameter is within the first preset range, the output voltage parameter is not within the second preset range, the current parameter is within the third preset range, and the control device is determined to be in the first state according to the operating status parameter, the switch module is controlled to close to conduct the power supply link between the input module and the output module to power the external device.

[0062] It should be noted that the control device 10 for active forced bypass used in a nuclear power plant is described above and will not be described in detail here.

[0063] It should be noted that receiving the abnormal signal sent by the main control module can be understood as the first control module receiving the abnormal signal sent by the main control module. The abnormal signal of the main control module can be understood as the abnormal signal sent when the inverter control board fails or loses power, and the specific signal can be determined according to the actual situation.

[0064] In the embodiment of the present application, the first input voltage parameter being in the first preset range can be understood as the input voltage being within the normal operating range. The output voltage parameter not being in the second preset range can be understood as the output voltage being undervoltage. The current parameter being in the third preset range can be understood as the current parameter being within the normal current range. The values ​​of the first preset range, the second preset range, and the third preset range can be specifically determined according to the actual situation and are not limited here. As an example, the first preset range can be 380±20 volts (V), the second preset range can be 380±20V, and the third preset range can be understood as the current setting value. As an example, the current parameter can be 4000 amperes (A). Among them, the current parameter being in the third preset range can be understood as the current parameter being less than or equal to the setting value, which can be exemplified as the current parameter being less than or equal to 4000A; the current parameter not being in the third preset range can be understood as the current parameter being greater than the setting value, which can be exemplified as the current parameter being greater than 4000A. Among them, the current parameter not being in the third preset range can be understood as the control device 10 generating a short circuit. The first state can be understood as the control device being in an inverter state, which can also be referred to as the control device being in an inverter state. The external device can be understood as any device connected to the output module, specifically a load module.

[0065] It should be noted that the current parameter can be understood as a current signal parameter, and the specific value can be 0 and 1 (0 is an abnormal situation, 1 is a normal situation). The third preset range can be 1. The current parameter being in the third preset range can be understood as the current parameter being 1; the current parameter not being in the third preset range can be understood as the current parameter not being 1 (that is, being 0).

[0066] In practical applications, when the input voltage is within the normal operating range, the output voltage is undervoltage, the current parameter is within the normal current range, and the control device is in the inverter state, the control switch module is closed to conduct the power supply link between the input module and the output module to supply power to the subsequent load module. It should be noted that at this time, the control device switches from the inverter state to the bypass state, which can be referred to as the bypass state.

[0067] The solution of the embodiment of the present application is to add a first control module, and when an abnormal signal sent by the main control module is received, the first input voltage parameter of the input module is collected, and the output voltage parameter, current parameter and operating status parameter of the output module are collected. When the first input voltage parameter is within a first preset range, the output voltage parameter is not within a second preset range, the current parameter is within a third preset range, and it is determined according to the operating status parameter that the control device is in a first state, the switch module is controlled to be closed to conduct the power supply link between the input module and the output module. That is, when the main control module is abnormal, the first control module is used to close the power supply link between the input module and the output module, so that the external device can be stably powered and the output is not powered off.

[0068] In an embodiment of the present application, the switch module includes a first switch and a second switch; the input module includes a first input unit and a second input unit; and the method further includes:

[0069] When it is determined according to the operating state parameters that the control device is in the first state, the first input voltage parameter is in the first preset range, the output voltage parameter is not in the second preset range, and the current parameter is in the third preset range, the second switch is controlled to be disconnected and the first switch is controlled to be closed to conduct the power supply link between the first input unit and the output module; to instruct the first input unit to input the first alternating current to the output module to power the external device.

[0070] It should be noted that the first switch is used to control the connection or disconnection between the first input unit and the output module, that is, when the first switch is closed, the first input unit and the output module are connected; when the first switch is opened, the first input unit and the output module are disconnected. The second switch is used to control the connection or disconnection between the second input unit and the output module, that is, when the second switch is closed, the second input unit and the output module are connected; when the second switch is opened, the second input unit and the output module are disconnected.

[0071] It should be noted that when the first switch is closed, the second switch is open; when the first switch is open, the second switch is closed. In practical applications, the first switch can be recorded as SCR2, and the second switch can be recorded as SCR1.

[0072] In the embodiment of the present application, the output voltage parameter is not within the second preset range and the current parameter is within the third preset range, which can be understood as an abnormality of non-hardware current limiting in the control device. When the control device is determined to be in the first state according to the operating state parameter, the first input voltage parameter is within the first preset range, the output voltage parameter is not within the second preset range, and the current parameter is within the third preset range, the second switch is controlled to be disconnected, and the first switch is controlled to be closed to conduct the power supply link between the first input unit and the output module; to instruct the first input unit to input the first alternating current to the output module to power the external device; it can be illustrated as follows: when the control device is in an inverted state, the first input voltage parameter is within the normal operating range value, the output voltage parameter is not within the normal operating range value (i.e., output undervoltage), and the current parameter is less than or equal to the set value, the second switch is controlled to be disconnected, and the first switch is controlled to be closed to conduct the power supply link between the first input unit and the output module, and the first input unit inputs the first alternating current to the output module to power the external device.

[0073] It should be noted that before determining according to the operating state parameters that the control device is in the inversion state, the first input voltage parameter is within the normal operating range, the output voltage parameter is not within the normal operating range (i.e., the output is undervoltage), and the current parameter is greater than the set value, the first switch is disconnected and the second switch is closed, and the second input unit inputs the second alternating current to the output module to power the external device. At this time, the first switch is controlled to be closed and the second switch is disconnected, and the second input unit is forced to switch to the first input unit inputting the first alternating current to the output module to power the external device.

[0074] In an embodiment of the present application, the switch module includes a first switch and a second switch; the input module includes a first input unit and a second input unit; and the method further includes:

[0075] When it is determined according to the operating state parameters that the control device is in the first state, the first input voltage parameter is in the first preset range, the output voltage parameter is not in the second preset range, and the current parameter is not in the third preset range, the first switch is controlled to be disconnected and the second switch is controlled to be closed to conduct the power supply link between the second input unit and the output module; to instruct the second input unit to input the second alternating current to the output module to power the external device.

[0076] It should be noted that the second input unit includes an input component and an inverter component; the inverter component inverts the direct current sent by the input component to obtain a second alternating current. The main control module achieves inversion by sampling and controlling the conduction of the IGBT. A specific example is that the inverter control board samples and controls the conduction of the IGBT by driving the adapter board, the inverter drive board and the IGBT adapter board.

[0077] In the embodiment of the present application, the output voltage parameter is not within the second preset range and the current parameter is not within the third preset range. It can be understood that the control device is undervoltage due to hardware current limiting, that is, the control device is short-circuited.

[0078] When it is determined according to the operating state parameters that the control device is in the first state, the first input voltage parameter is in the first preset range, the output voltage parameter is not in the second preset range, and the current parameter is not in the third preset range, the first switch is controlled to be disconnected, and the second switch is controlled to be closed, so as to conduct the power supply link between the second input unit and the output module; to instruct the second input unit to input the second alternating current to the output module to power the external device; it can be understood that, when it is determined according to the operating state parameters that the control device is in the inverter state, the first input voltage parameter is within the normal operating range value, the output voltage parameter is not within the normal operating range value (i.e., the output is undervoltage), and the current parameter is greater than the set value, the first switch is controlled to be disconnected, and the second switch is controlled to be closed, so as to conduct the power supply link between the second input unit and the output module, and the second input unit inputs the second alternating current to the output module to power the external device.

[0079] It should be noted that before determining according to the operating status parameters that the control device is in the reverse state, the first input voltage parameter is within the normal operating range, the output voltage parameter is not within the normal operating range (i.e., the output is undervoltage), and the current parameter is greater than the set value, the first switch is disconnected and the second switch is closed, and the second input unit inputs the second alternating current to the output module to power the external device. At this time, the power supply module between the second input unit and the output module is maintained without switching.

[0080] In an embodiment of the present application, the main control module collects the second input voltage parameter of the first input unit, and sends a control signal to the driving module when the second input voltage parameter is not within a fourth preset range; the driving module is used to drive the switch module to close based on the control signal to conduct the power supply link between the input module and the output module to power the external device.

[0081] It should be noted that, when there is no abnormality in the main control module, the main control module controls the closing of the switch module to conduct the power supply link between the input module and the output module.

[0082] In the embodiment of the present application, the fourth preset range can be determined according to the input voltage undervoltage range based on actual conditions; the second input voltage parameter not being within the fourth preset range can be understood as the second input voltage parameter being within the voltage normal operating range value. The normal operating range value of the second input voltage can be the same as or different from the normal operating range value of the first input voltage.

[0083] For ease of understanding, in practical applications, the above control method can be referred to as the main logic detection method for the independent bypass control board to implement the forced bypass function, specifically:

[0084] The independent bypass controller determines whether the conditions for forced switching to bypass are met by sampling the output voltage of the output module, the bypass input voltage, the current limiting signal and the operation status signal.

[0085] Specific method: (1) If the inverter device is in the inverter state, the bypass voltage is within the normal operating range, and the output voltage has an abnormality other than hardware current limiting, then it is forced to switch to the bypass state;

[0086] (2) If the inverter device is in the inverter state at this time, and the bypass voltage is also within the normal operating range, but the output voltage is undervoltage due to hardware current limiting, the independent bypass forced switching function cannot be triggered. The reason is that when the hardware wave-by-wave current limiting occurs, it represents a short circuit. At this time, the software will send a shielding signal to shield the output voltage abnormal signal, so that it does not meet the conditions in (1) and cannot trigger the forced bypass output. The condition for hardware current limiting is whether the output current value reaches the software setting value. If it reaches the software setting value, the software sends a shielding signal. If the output current value does not reach the software setting value, it cannot be triggered.

[0087] The present application provides a control device for active forced bypass for a nuclear power plant. Figure 6 A schematic diagram of a control device for active forced bypass for a nuclear power plant provided in an embodiment of the present application Figure 1 The control device 600 includes a control unit 601,

[0088] The control unit 601 is used to collect the first input voltage parameter of the input module, and the output voltage parameter, current parameter and operating status parameter of the output module when receiving an abnormal signal sent by the main control module; and when the first input voltage parameter is within a first preset range, the output voltage parameter is not within a second preset range, the current parameter is within a third preset range, and the control device is determined to be in a first state according to the operating status parameter, control the switch module to close so as to conduct the power supply link between the input module and the output module to power the external device.

[0089] In an embodiment of the present application, the switch module includes a first switch and a second switch; the input module includes a first input unit and a second input unit; the control unit 601 is also used to control the second switch to be disconnected and the first switch to be closed to conduct the power supply link between the first input unit and the output module; to instruct the first input unit to input the first alternating current to the output module to power the external device when it is determined according to the operating state parameters that the control device is in the first state, the first input voltage parameter is in the first preset range, the output voltage parameter is not in the second preset range, and the current parameter is in the third preset range.

[0090] In an embodiment of the present application, the switch module includes a first switch and a second switch; the input module includes a first input unit and a second input unit; the control unit 601 is also used to control the first switch to be disconnected and the second switch to be closed to conduct the power supply link between the second input unit and the output module; to instruct the second input unit to input the second alternating current to the output module to power the external device when it is determined according to the operating state parameters that the control device is in the first state, the first input voltage parameter is in the first preset range, the output voltage parameter is not in the second preset range, and the current parameter is not in the third preset range.

[0091] Figure 7 A schematic diagram of a control device for active forced bypass for a nuclear power plant provided in an embodiment of the present application Figure 2 The control device 600 further includes: a processor 602 and a memory 603 . Optionally, the control device 600 may further include a communication bus 604 .

[0092] In the process of a specific embodiment, the processor 602 may be at least one of an application-specific integrated circuit (ASIC), a digital signal processor (DSP), a digital signal processing image processing device (DSPD), a programmable logic image processing device (PLD), a field programmable gate array (FPGA), a CPU, a controller, a microcontroller, and a microprocessor. It is understandable that for different devices, the electronic device used to implement the functions of the processor may also be other, which is not specifically limited in this embodiment.

[0093] In the embodiment of the present application, the communication bus 604 is used to realize the connection and communication between the processor 602 and the memory 603; when the processor 602 executes the operating program stored in the memory 603, the following control method for active forced bypass for a nuclear power plant is realized:

[0094] In case of receiving an abnormal signal sent by the main control module, the first input voltage parameter of the input module is collected, and the output voltage parameter, current parameter and operating status parameter of the output module are collected; and when the first input voltage parameter is within a first preset range, the output voltage parameter is not within a second preset range, the current parameter is within a third preset range, and it is determined according to the operating status parameter that the control device is in a first state, the switch module is controlled to close to conduct the power supply link between the input module and the output module to power the external device.

[0095] Furthermore, the processor 602 is also used to control the second switch to open and the first switch to close to conduct the power supply link between the first input unit and the output module when it is determined according to the operating state parameters that the control device is in the first state, the first input voltage parameter is in the first preset range, the output voltage parameter is not in the second preset range, and the current parameter is in the third preset range, so as to instruct the first input unit to input the first alternating current to the output module to power the external device.

[0096] Furthermore, the processor 602 is also used to control the first switch to open and the second switch to close to connect the power supply link between the second input unit and the output module, when it is determined according to the operating state parameters that the control device is in the first state, the first input voltage parameter is in the first preset range, the output voltage parameter is not in the second preset range, and the current parameter is not in the third preset range, so as to instruct the second input unit to input the second alternating current to the output module to power the external device.

[0097] An embodiment of the present application provides a storage medium having a computer program stored thereon. The computer-readable storage medium stores one or more programs. The one or more programs can be executed by one or more processors. The computer program implements the control method of active forced bypass for a nuclear power plant as described above.

[0098] Based on the above embodiments, an embodiment of the present application provides a computer program product, including a computer program, which can be executed by one or more processors. The computer program implements the control method of active forced bypass for a nuclear power plant as described above.

[0099] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0100] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present disclosure, or the part that contributes to the relevant technology, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, a disk, or an optical disk), and includes a number of instructions for enabling an image display device (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in each embodiment of the present disclosure.

[0101] The above description is only a preferred embodiment of the present application and is not intended to limit the protection scope of the present application.

Claims

1. A control device for active forced bypass for a nuclear power plant, characterized in that: The control device comprises a first control module and a power supply module; the power supply module comprises: an input module, an output module and a switch module; the input end of the first control module is respectively connected to the output end of the input module, the output end of the output module and the main control module; the output end of the first control module is connected to the control end of the switch module; the output end of the input module is connected to the first end of the switch module; the second end of the switch module is connected to the input end of the output module; The first control module is used to collect the first input voltage parameter of the input module, and the output voltage parameter, current parameter and operating status parameter of the output module when receiving the abnormal signal sent by the main control module; and when the first input voltage parameter is within the first preset range, the output voltage parameter is not within the second preset range, the current parameter is within the third preset range, and it is determined according to the operating status parameter that the control device is in the first state, control the switch module to close so as to conduct the power supply link between the input module and the output module to power the external device.

2. The active forced bypass control device for a nuclear power plant according to claim 1, characterized in that: The switch module includes a first switch and a second switch; the input module includes a first input unit and a second input unit; the second end of the first switch and the second end of the second switch are connected in parallel to the input end of the output module; the output end of the first input unit is connected to the first end of the first switch; the output end of the second input unit is connected to the first end of the second switch; The first control module is further configured to control the second switch to be disconnected and the first switch to be closed, so as to conduct a power supply link between the first input unit and the output module, when it is determined according to the operating state parameter that the control device is in the first state, the first input voltage parameter is in the first preset range, the output voltage parameter is not in the second preset range, and the current parameter is in the third preset range; The first input unit is used to input a first alternating current into the output module to supply power to the external device.

3. The active forced bypass control device for a nuclear power plant according to claim 1, characterized in that: The switch module includes a first switch and a second switch; the input module includes a first input unit and a second input unit; the second end of the first switch and the second end of the second switch are connected in parallel to the input end of the output module; the output end of the first input unit is connected to the first end of the first switch; the output end of the second input unit is connected to the first end of the second switch; The first control module is further configured to control the first switch to be opened and the second switch to be closed, so as to conduct a power supply link between the second input unit and the output module, when it is determined according to the operating state parameter that the control device is in the first state, the first input voltage parameter is in the first preset range, the output voltage parameter is not in the second preset range, and the current parameter is not in the third preset range; The second input unit is used to input a second alternating current into the output module to power the external device.

4. The active forced bypass control device for a nuclear power plant according to claim 1, characterized in that: The control device further comprises a power supply unit; the power supply unit is connected to an input end of the first control module; The power supply unit is used to supply power to the first control module.

5. The active forced bypass control device for a nuclear power plant according to claim 1, characterized in that: The first state is that the control device is in an inverter state.

6. The active forced bypass control device for a nuclear power plant according to claim 2, characterized in that: The second input unit includes an input component and an inverter component; the output end of the input component is connected to the input end of the inverter component; the output end of the inverter component is connected to the first end of the second switch; The inverter component is used to receive the direct current sent by the input component and perform inversion processing on the direct current to obtain a second alternating current.

7. The active forced bypass control device for a nuclear power plant according to claim 1, characterized in that: The control device further comprises a driving module; the input end of the driving module is connected to the output end of the main control module; the output end of the driving module is connected to the control end of the switch module; The main control module is used to collect the second input voltage parameter of the input unit, and send a control signal to the driving module when the second input voltage parameter is not within a fourth preset range; The driving module is used to drive the switch module to close based on the control signal to conduct the power supply link between the input module and the output module to supply power to the external device.

8. A control method for active forced bypass for a nuclear power plant, characterized in that: The method comprises: In case of receiving an abnormal signal sent by the main control module, the first input voltage parameter of the input module is collected, and the output voltage parameter, current parameter and operating status parameter of the output module are collected; and when the first input voltage parameter is within a first preset range, the output voltage parameter is not within a second preset range, the current parameter is within a third preset range, and it is determined according to the operating status parameter that the control device is in a first state, the switch module is controlled to close to conduct the power supply link between the input module and the output module to power the external device.

9. The control method for active forced bypass for a nuclear power plant according to claim 8, characterized in that: The switch module includes a first switch and a second switch; the input module includes a first input unit and a second input unit; the method further includes: When it is determined according to the operating state parameters that the control device is in the first state, the first input voltage parameter is in the first preset range, the output voltage parameter is not in the second preset range, and the current parameter is in the third preset range, the second switch is controlled to be disconnected and the first switch is controlled to be closed to conduct the power supply link between the first input unit and the output module; to instruct the first input unit to input the first alternating current to the output module to power the external device.

10. The control method for active forced bypass for a nuclear power plant according to claim 8, characterized in that: The switch module includes a first switch and a second switch; the input module includes a first input unit and a second input unit; the method further includes: When it is determined according to the operating state parameters that the control device is in the first state, the first input voltage parameter is in the first preset range, the output voltage parameter is not in the second preset range, and the current parameter is not in the third preset range, the first switch is controlled to be disconnected and the second switch is controlled to be closed to conduct the power supply link between the second input unit and the output module; to instruct the second input unit to input the second alternating current to the output module to power the external device.

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