CN117394516A - Nuclear power supply equipment comprising independent bypass control - Google Patents

Nuclear power supply equipment comprising independent bypass control Download PDF

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Publication number
CN117394516A
CN117394516A CN202311277199.8A CN202311277199A CN117394516A CN 117394516 A CN117394516 A CN 117394516A CN 202311277199 A CN202311277199 A CN 202311277199A CN 117394516 A CN117394516 A CN 117394516A
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CN
China
Prior art keywords
signal
bypass
operation signal
inversion
voltage
Prior art date
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Pending
Application number
CN202311277199.8A
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Chinese (zh)
Inventor
郑金祥
杜伟
陈皓
杨文泉
王群兴
王相杰
林明智
白秋梁
杨晓光
赖作坤
李育仁
李天华
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Kehua Data Co Ltd
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Kehua Data Co Ltd
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Priority to CN202311277199.8A priority Critical patent/CN117394516A/en
Publication of CN117394516A publication Critical patent/CN117394516A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/32—Means for protecting converters other than automatic disconnection

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Stand-By Power Supply Arrangements (AREA)

Abstract

The application provides nuclear power supply equipment comprising independent bypass control, which comprises a main control module, an independent bypass control module and a voltage sampling module; the voltage sampling module is used for collecting the total output voltage and bypass voltage of the nuclear power supply equipment; the main control module outputs a first inversion main path operation signal and a first bypass operation signal; when the first inversion main circuit operation signal is a first signal, the total output voltage is abnormal and the bypass voltage is normal, the independent bypass control module determines that the inversion main circuit driving signal is a second driving signal and the bypass driving signal is a third driving signal, and indicates that the inversion main circuit switch is disconnected, the inversion main circuit is not powered, and indicates that the bypass switch is conducted and the bypass is powered. The control method and the control device can indicate the inversion main circuit to work at the main control module, but control the bypass to supply power for the load when the total output voltage is abnormal but the bypass voltage is normal due to sampling failure or connection line failure and other reasons, so that the nuclear power supply equipment can supply power normally, and the power supply requirement is met.

Description

Nuclear power supply equipment comprising independent bypass control
Technical Field
The application relates to the technical field of power supplies, in particular to nuclear power supply equipment comprising independent bypass control.
Background
Conventional power supply devices typically include an inverter main power supply and a bypass power supply in order to ensure uninterrupted power supply, the bypass power supply being used when the inverter main power supply is problematic.
At present, switching of inversion main circuit power supply and bypass power supply of power supply equipment is controlled by a main control module, and the main control module determines whether to switch the bypass power supply by detecting whether the input of the inversion main circuit power supply can normally supply power. However, this control method may cause the power supply device to output power failure or output voltage lower than the normal power supply voltage due to sampling failure or connection line failure, and may not meet the power supply requirement.
Disclosure of Invention
The embodiment of the application provides nuclear power supply equipment comprising independent bypass control, which is used for solving the problem that the power supply equipment outputs power failure or output voltage is lower than normal power supply voltage and cannot meet power supply requirements due to sampling failure or connecting line faults and other reasons in the existing control mode.
In a first aspect, an embodiment of the present application provides a nuclear power supply device including an independent bypass control, including a main control module, an independent bypass control module, and a voltage sampling module;
the voltage sampling module is used for collecting the total output voltage and bypass voltage of the nuclear power supply equipment;
The main control module is used for outputting a first inversion main path operation signal and a first bypass operation signal;
the independent bypass control module is used for determining that the inversion main path driving signal is a second driving signal and the bypass driving signal is a third driving signal when the first inversion main path operation signal is a first signal, the total output voltage is abnormal and the bypass voltage is normal; the first signal is used for indicating the inversion main circuit to operate; the inversion main circuit driving signal is used for controlling the state of the inversion main circuit switch, the second driving signal is used for indicating the disconnection of the inversion main circuit switch, and the inversion main circuit is not powered; the bypass driving signal is used for controlling the state of the bypass switch, and the third driving signal is used for indicating the bypass switch to be conducted and bypass power supply.
In one possible implementation, the independent bypass control module includes an independent bypass control unit and a drive unit;
the independent bypass control unit is used for determining that the second inversion main path operation signal is a second signal and the second bypass operation signal is a third signal when the first inversion main path operation signal is a first signal and the total output voltage is abnormal, and determining that the third bypass operation signal is the third signal when the bypass voltage is normal; the second signal is used for indicating that the inversion main circuit is not operated, and the third signal is used for indicating that the bypass is operated;
The driving unit is used for determining that the inversion main path driving signal is a second driving signal when the first inversion main path operation signal is a first signal and the second inversion main path operation signal is a second signal, and determining that the bypass driving signal is a third driving signal when the second bypass operation signal is a third signal and the third bypass operation signal is a third signal.
In one possible implementation, the independent bypass control unit is further configured to: when the first inversion main path operation signal is a first signal and the total output voltage is normal, determining that the second inversion main path operation signal is a first signal and the second bypass operation signal is a fourth signal, when the first inversion main path operation signal is a second signal, determining that the second inversion main path operation signal is a second signal and the second bypass operation signal is a third signal, and when the bypass voltage is abnormal, determining that the third bypass operation signal is a fourth signal;
the fourth signal is used to indicate that the bypass is not running.
In one possible implementation, the nuclear power plant including the independent bypass control further includes a main power supply and a bypass backup power supply;
the main control module is powered by a main power supply, and the driving unit, the independent bypass control unit and the voltage sampling module are powered by the main power supply and the bypass standby power supply together;
The independent bypass control unit is used for determining and outputting a second inversion main path operation signal and a second bypass operation signal according to the first inversion main path operation signal, the total output voltage and the voltage of the main power supply.
In one possible implementation, the independent bypass control unit is specifically configured to: when the first inversion main path operation signal is a first signal, the total output voltage is normal and the voltage of the main power supply is normal, determining that the second inversion main path operation signal is a first signal and the second bypass operation signal is a fourth signal, and when the first inversion main path operation signal is a second signal, the total output voltage is abnormal or the voltage of the main power supply is abnormal, determining that the second inversion main path operation signal is a second signal and the second bypass operation signal is a third signal;
the fourth signal is used to indicate that the bypass is not running.
In one possible implementation, the independent bypass control unit includes a first voltage detection unit, a second voltage detection unit, a third voltage detection unit, a first and gate, a second and gate, and a not gate;
the first voltage detection unit is used for detecting whether the total output voltage is normal or not and outputting a total output voltage detection signal;
the second voltage detection unit is used for detecting whether the bypass voltage is normal or not and outputting a third bypass operation signal;
The third voltage detection unit is used for detecting whether the voltage of the main power supply is normal or not and outputting a main power supply voltage detection signal;
the first AND gate takes the total output voltage detection signal and the first inversion main path operation signal as inputs and outputs a third inversion main path operation signal;
the second AND gate takes the third inversion main path operation signal and the main power supply voltage detection signal as inputs and outputs a second inversion main path operation signal;
the NOT gate takes the second inversion main path operation signal as input and outputs a second bypass operation signal.
In one possible implementation, the independent bypass control unit further comprises a latch;
the latch is used for latching the third inversion main path operation signal when the third inversion main path operation signal output by the first AND gate is the second signal;
the second AND gate takes the output signal of the latch and the main power supply voltage detection signal as inputs, and outputs a second inversion main path operation signal.
In one possible implementation, the driving unit is further configured to: when the first inversion main path operation signal is a first signal and the second inversion main path operation signal is a first signal, determining that the inversion main path driving signal is a first driving signal, and when the first inversion main path operation signal is a second signal, determining that the inversion main path driving signal is a second driving signal, and when the first bypass operation signal is a third signal and the third bypass operation signal is a third signal, determining that the bypass driving signal is a third driving signal, and when the first bypass operation signal is a fourth signal and the second bypass operation signal is a fourth signal, or when the third bypass operation signal is a fourth signal, determining that the bypass driving signal is a fourth driving signal;
A fourth signal is used to indicate that the bypass is not running;
the first driving signal is used for indicating the switch of the inversion main circuit to be conducted, and the inversion main circuit supplies power; the fourth drive signal is used to instruct the bypass switch to open and the bypass is unpowered.
In one possible implementation, the driving unit includes a third and gate, an or gate, and a fourth and gate;
the third AND gate takes the first inversion main path operation signal and the second inversion main path operation signal as input and outputs an inversion main path driving signal;
the OR gate takes the first bypass operation signal and the second bypass operation signal as input and outputs a fourth bypass operation signal;
the fourth AND gate takes the third bypass operation signal and the fourth bypass operation signal as input and outputs a bypass driving signal.
In one possible implementation, the total output voltage is the voltage after the outputs of the inverting main switch and the bypass switch are connected in parallel; the bypass voltage is an input voltage of the bypass switch.
The embodiment of the application provides nuclear power supply equipment comprising independent bypass control, which comprises a main control module, an independent bypass control module and a voltage sampling module; the voltage sampling module can collect the total output voltage and bypass voltage of the nuclear power supply equipment; the main control module is used for outputting control signals of an inversion main path and a bypass when independent bypass control is not added, namely a first inversion main path operation signal and a first bypass operation signal; when the first inversion main circuit operation signal is the first signal, the total output voltage is abnormal and the bypass voltage is normal, namely, the main control module indicates the inversion main circuit to work, but the total output voltage is abnormal (the inversion main circuit works have problems) due to sampling failure, connection line faults and the like, at the moment, if the bypass voltage is detected to be normal, the bypass operation is controlled to supply power to a load, so that the nuclear power supply equipment can normally supply power even when the sampling failure, the connection line faults and the like occur, and the power supply requirement is met.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required for the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a nuclear power plant including independent bypass control according to one embodiment of the present application;
FIG. 2 is a schematic structural view of a nuclear power plant including independent bypass control according to another embodiment of the present application;
fig. 3 is a schematic structural diagram of a nuclear power supply device including independent bypass control according to another embodiment of the present application.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system configurations, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the following description will be made with reference to the accompanying drawings by way of specific embodiments.
Referring to fig. 1 and 2, a schematic structural diagram of a nuclear power supply device including independent bypass control according to an embodiment of the present application is shown. The nuclear power supply equipment comprising the independent bypass control comprises a main control module 11, an independent bypass control module 13 and a voltage sampling module 12;
the voltage sampling module 12 is used for collecting the total output voltage U1 and the bypass voltage U2 of the nuclear power supply equipment;
the main control module 11 is configured to output a first inversion main path operation signal N1 and a first bypass operation signal P1;
the independent bypass control module 13 is configured to determine that the inversion main driving signal D1 is a second driving signal and the bypass driving signal D2 is a third driving signal when the first inversion main operation signal N1 is a first signal, the total output voltage U1 is abnormal, and the bypass voltage U2 is normal; the first signal is used for indicating the inversion main circuit to operate; the inversion main path driving signal D1 is used for controlling the state of the inversion main path switch K1, the second driving signal is used for indicating the inversion main path switch K1 to be disconnected, and the inversion main path is not powered; the bypass driving signal D2 is used for controlling the state of the bypass switch K2, and the third driving signal is used for indicating the bypass switch K2 to be turned on and bypass power supply.
The voltage sampling module 12 and the main control module 11 are connected with the independent bypass control module 13. The independent bypass control module 13 is configured to output an inversion main path driving signal D1 for controlling the state of the inversion main path switch K1 and a bypass driving signal D2 for controlling the state of the bypass switch K2.
Referring to fig. 1, an inverter main circuit supplies power to a load through an inverter main circuit switch K1, and the state of the inverter main circuit switch K1 affects the operating state of the inverter main circuit. When the inversion main switch K1 is turned off, the inversion main circuit does not supply power to the load, and when the inversion main switch K1 is turned on, the inversion main circuit can supply power to the load. The bypass supplies power to the load through the bypass switch K2, and the state of the bypass switch K2 influences the working state of the bypass. The bypass does not supply power to the load when the bypass switch K2 is turned off, and the bypass can supply power to the load when the bypass switch K2 is turned on.
In order to ensure the reliability of the power supply equipment, the inversion main circuit and the bypass are connected with different input sources, and when one of the input sources cannot normally supply power, the other input source is switched to supply power.
The inverting main switch K1 and the bypass switch K2 may be static switches SCR, for example, the inverting main switch K1 is a first static switch, and the bypass switch K2 is a second static switch.
The first inversion main path operation signal N1 and the first bypass operation signal P1 output by the main control module 11 are signals for driving the inversion main path switch K1 and the bypass switch K2 when the independent bypass control module 13 is not included. That is, when the independent bypass control module 13 is not provided, the first main inverter path operation signal N1 is used as the main inverter path driving signal D1 for controlling the state of the main inverter path switch K1, when it is the first signal, the main inverter path switch K1 is driven to be turned on, the main inverter path is operated (power is supplied), when it is the second signal, the main inverter path switch K1 is turned off, and the main inverter path is not operated (power is not supplied); when the independent bypass control module 13 is not provided, the first bypass operation signal P1 is used as a bypass driving signal D2 for controlling the state of the bypass switch K2, and when it is the third signal, the bypass switch K2 is driven to be on, and when it is the fourth signal, the bypass switch K2 is turned off, and the bypass is not operated (not powered).
The first inversion main path operation signal N1 and the first bypass operation signal P1 do not indicate that the inversion main path and the bypass are simultaneously operated. The first inversion main path operation signal N1 and the first bypass operation signal P1 may be opposite signals, that is, when the first inversion main path operation signal N1 is the first signal and indicates that the inversion main path switch K1 is turned on, the first bypass operation signal P1 is the fourth signal and indicates that the bypass switch K2 is turned off; when the first inversion main path operation signal N1 is the second signal, indicating that the inversion main path switch K1 is turned off, the first bypass operation signal P1 is the third signal, indicating that the bypass switch K2 is turned on. Or, the first inversion main operation signal N1 is a second signal and the first bypass operation signal P1 is a fourth signal.
The first signal, the second signal, the third signal and the fourth signal can be set according to actual requirements. The first signal is opposite to the second signal, and the third signal is opposite to the fourth signal. Illustratively, the first signal may be "1", the second signal may be "0", the third signal may be "1", and the fourth signal may be "0".
For example, when the on-off signal is "1" and the inversion comprehensive protection signal is "1", the main control module 11 may determine that the first inversion main operation signal N1 is a first signal and the first bypass operation signal P1 is a fourth signal; when the switching-on/off signal is 0 or the inversion comprehensive protection signal is 0, determining that the first inversion main path operation signal N1 is a second signal, and when the first inversion main path operation signal N1 is the second signal and the bypass comprehensive protection signal is 1, determining that the first bypass operation signal P1 is a third signal; if the bypass integrated protection signal is "0", the first bypass operation signal P1 is determined to be a fourth signal. When the power-on/off signal is in a power-on state, the power-on/off signal is 1, otherwise, the power-on/off signal is 0. When the main control module 11 initially detects that the state of the inversion main circuit is normal and can operate normally, the inversion comprehensive protection signal is "1", otherwise, the inversion comprehensive protection signal is "0". When the primary detection of the bypass is normal, the main control module 11 can normally operate, the bypass comprehensive protection signal is "1", otherwise, the bypass comprehensive protection signal is "0".
In order to ensure that the nuclear power supply equipment is normally powered, i.e. cannot be powered down or the output voltage is lower than the normal power supply voltage, the independent bypass control module 13 indicates that the inversion main circuit is not powered on if the total output voltage U1 is detected to be abnormal and the bypass voltage U2 is normal when detecting that the first inversion main circuit operation signal N1 is the first signal, i.e. the main circuit operation is indicated, and the bypass voltage U2 can not be powered on under the condition that the bypass voltage U2 is normal, the bypass switch K2 can be driven to be powered on by the bypass power supply, and the inversion main circuit switch K1 is controlled to be disconnected, and the inversion main circuit stops supplying power.
The abnormal total output voltage U1 means that the total output voltage U1 is smaller than a preset normal voltage, and the normal bypass voltage U2 means that the bypass voltage U2 is greater than or equal to the preset normal voltage. The preset normal voltage can be set according to actual requirements, and can be the minimum voltage of the nuclear power supply equipment during normal power supply.
In some possible implementations, the nuclear power source device including the independent bypass control may be an uninterruptible power source device, applied to a nuclear power plant.
The nuclear power supply equipment with the independent bypass control comprises a main control module 11, an independent bypass control module 13 and a voltage sampling module 12; the voltage sampling module 12 can collect the total output voltage U1 and the bypass voltage U2 of the nuclear power supply equipment; the main control module 11 is configured to output control signals of the inversion main path and the bypass when the independent bypass control is not added, that is, a first inversion main path operation signal N1 and a first bypass operation signal P1; when the first inversion main circuit operation signal N1 is the first signal and the total output voltage U1 is abnormal and the bypass voltage U2 is normal, that is, when the main control module 11 indicates that the inversion main circuit works, but the total output voltage U1 is abnormal (the inversion main circuit works have problems) due to sampling failure or connection line failure and the like, at this time, if the bypass voltage U2 is detected to be normal, the bypass control module controls the bypass to work to supply power to the load, so that the nuclear power supply equipment can normally supply power even when the sampling failure or the connection line failure and the like occur, and the power supply requirement is met.
In some embodiments, referring to fig. 2, the independent bypass control module 13 includes an independent bypass control unit 131 and a drive unit 132;
the independent bypass control unit 131 is configured to determine that the second inversion main path operation signal N2 is the second signal and the second bypass operation signal P2 is the third signal when the first inversion main path operation signal N1 is the first signal and the total output voltage U1 is abnormal, and determine that the third bypass operation signal P3 is the third signal when the bypass voltage U2 is normal; the second signal is used for indicating that the inversion main circuit is not operated, and the third signal is used for indicating that the bypass is operated;
the driving unit 132 is configured to determine that the inversion main driving signal D1 is the second driving signal when the first inversion main driving signal N1 is the first signal and the second inversion main driving signal N2 is the second signal, and determine that the bypass driving signal D2 is the third driving signal when the second bypass driving signal P2 is the third signal and the third bypass driving signal P3 is the third signal.
The main control module 11 and the voltage sampling module 12 are connected with an independent bypass control unit 131, the independent bypass control unit 131 is connected with a driving unit 132, the main control module 11 is connected with the driving unit 132, and the driving unit 132 is used for sending an inversion main driving signal D1 to an inversion main switch K1 and sending a bypass driving signal D2 to a bypass switch K2.
In the present embodiment, the independent bypass control unit 131 may generate and output the second inverter main operation signal N2 and the second bypass operation signal P2 based on the first inverter main operation signal N1 and the total output voltage U1, and generate and output the third bypass operation signal P3 according to the bypass voltage U2. The second inversion main path operation signal N2 and the second bypass operation signal P2 are opposite signals, that is, when the second inversion main path operation signal N2 is the first signal and indicates that the inversion main path switch K1 is turned on, the second bypass operation signal P2 is the fourth signal and indicates that the bypass switch K2 is turned off; when the second inversion main circuit operation signal N2 is a second signal, indicating that the inversion main circuit switch K1 is turned off, the second bypass operation signal P2 is a third signal, indicating that the bypass switch K2 is turned on. The first signal and the third signal are signals indicating operation, for example, may be "1", only two different signal names are used to distinguish the inversion main circuit from the bypass operation, and similarly, the second signal and the fourth signal are signals indicating non-operation, for example, may be "0", only two different signal names are used to distinguish the inversion main circuit from the bypass operation.
The driving unit 132 may generate and output an inversion main driving signal D1 according to the first inversion main driving signal N1 and the second inversion main driving signal N2, and generate and output a bypass driving signal D2 according to the first bypass driving signal P1, the second bypass driving signal P2, and/or the third bypass driving signal P3.
In some embodiments, the independent bypass control unit 131 is further configured to: when the first inversion main path operation signal N1 is a first signal and the total output voltage U1 is normal, determining that the second inversion main path operation signal N2 is a first signal and the second bypass operation signal P2 is a fourth signal, and when the first inversion main path operation signal N1 is a second signal, determining that the second inversion main path operation signal N2 is a second signal and the second bypass operation signal P2 is a third signal, and when the bypass voltage U2 is abnormal, determining that the third bypass operation signal P3 is a fourth signal;
the fourth signal is used to indicate that the bypass is not running.
In this embodiment, the independent bypass control unit 131 determines that the second inversion main operation signal N2 is the first signal and the second bypass operation signal P2 is the fourth signal when the first inversion main operation signal N1 is the first signal and the total output voltage U1 is normal, and determines that the second inversion main operation signal N2 is the second signal and the second bypass operation signal P2 is the third signal when the first inversion main operation signal N1 is the second signal or the total output voltage U1 is abnormal. That is, when the main control module 11 indicates that the inverter main circuit is operated and the total output voltage U1 is normal, the independent bypass control unit 131 indicates that the inverter main circuit can be operated normally, outputs the second inverter main circuit operation signal N2 indicating that the inverter main circuit is operated and the second bypass operation signal P2 indicating that the bypass is not operated, and when the main control module 11 indicates that the inverter main circuit is not operated or the total output voltage U1 is abnormal, indicates that the main control module 11 controls the inverter main circuit to be not operated based on the logic thereof or that the total output voltage U1 is abnormal due to a certain line disconnection or a certain device failure of the inverter main circuit, the independent bypass control unit 131 outputs the second inverter main circuit operation signal N2 indicating that the inverter main circuit is not operated and the second bypass operation signal P2 indicating that the bypass is operated.
If bypass power supply is required, the bypass voltage U2 needs to be ensured to be normal, and power can be normally supplied, so the independent bypass control unit 131 is further configured to determine that the third bypass operation signal P3 is a third signal when the bypass voltage U2 is normal, and determine that the third bypass operation signal P3 is a fourth signal when the bypass voltage U2 is abnormal. That is, the independent bypass control unit 131 outputs the third bypass operation signal P3 indicating the bypass operation when the bypass voltage U2 is normal, and outputs the third bypass operation signal P3 indicating that the bypass is not operated when the bypass voltage U2 is abnormal (the bypass voltage U2 may be abnormal due to a certain line disconnection or a certain device failure by the bypass).
The total output voltage U1 is equal to or greater than a preset normal voltage, and the bypass voltage U2 is equal to or greater than the preset normal voltage, and the bypass voltage U2 is equal to or less than the preset normal voltage.
In some embodiments, the nuclear power supply apparatus including independent bypass control further includes a primary power supply and a bypass backup power supply;
the main control module 11 is powered by a main power supply, and the driving unit 132, the independent bypass control unit 131 and the voltage sampling module 12 are powered by the main power supply and the bypass standby power supply together;
referring to fig. 3, the independent bypass control unit 131 is configured to determine and output a second inverter main operation signal N2 and a second bypass operation signal P2 according to the first inverter main operation signal N1, the total output voltage U1, and the voltage U3 of the main power source.
To ensure the reliability of the independent bypass control module 13 and the voltage sampling module 12, a main power supply and a bypass standby power supply are used to supply power to both modules together, and when one of the power supplies fails, the other power supply can supply power. In addition, in order to improve the reliability of the main control module 11, the main power supply may be powered by two power boards, one of which fails, and the other of which fails when both power boards fail.
Wherein, the main control module 11 can be integrated on the control board; the independent bypass control unit 131 and the driving unit 132 may be integrated on one driving board or may be separately provided on two driving boards, which is not particularly limited herein.
Since the main control module 11 is separately powered by the main power source, the independent bypass control unit 131 also needs to determine the second inversion main operation signal N2 and the second bypass operation signal P2 in consideration of the voltage U3 of the main power source.
In some embodiments, referring to fig. 3, the independent bypass control unit 131 is specifically configured to: when the first inversion main path operation signal N1 is a first signal, the total output voltage U1 is normal and the voltage U3 of the main power supply is normal, determining that the second inversion main path operation signal N2 is the first signal and the second bypass operation signal P2 is a fourth signal, and when the first inversion main path operation signal N1 is the second signal, the total output voltage U1 is abnormal or the voltage U3 of the main power supply is abnormal, determining that the second inversion main path operation signal N2 is the second signal and the second bypass operation signal P2 is the third signal;
The fourth signal is used to indicate that the bypass is not running.
In this embodiment, when the main control module 11 indicates that the main inverter circuit is running and the total output voltage U1 is normal and the voltage U3 of the main power supply is normal, it is indicated that the main control module 11 may work normally and the main inverter circuit may work normally, at this time, the independent bypass control unit 131 may output a second main inverter circuit running signal N2 indicating that the main inverter circuit is running and a second bypass running signal P2 indicating that the bypass is not running, when the main control module 11 indicates that the main inverter circuit is not running, or the total output voltage U1 is abnormal, or the voltage U3 of the main power supply is abnormal, it is indicated that the main control module 11 controls the main inverter circuit to not run based on its logic, or the total output voltage U1 is abnormal due to a certain line disconnection or a certain device failure of the main inverter circuit, or the voltage U3 of the main power supply is abnormal, so that the main control module 11 cannot work normally, at this time, the independent bypass control unit 131 outputs the second main inverter circuit running signal N2 indicating that the main inverter circuit is not running and the second bypass running signal P2 indicating that the bypass is running.
The voltage U3 of the main power source normally means that the main power source can provide the voltage required by the main control module 11, and the abnormal voltage U3 of the main power source means that the main power source cannot provide the voltage required by the main control module 11.
In some embodiments, referring to fig. 3, the independent bypass control unit 131 includes a first voltage detection unit J1, a second voltage detection unit J2, a third voltage detection unit J3, a first AND gate AND1, a second AND gate AND2, AND a NOT gate NOT;
the first voltage detection unit J1 is used for detecting whether the total output voltage U1 is normal or not and outputting a total output voltage detection signal;
the second voltage detection unit J2 is configured to detect whether the bypass voltage U2 is normal, and output a third bypass operation signal P3;
the third voltage detection unit J3 is used for detecting whether the voltage U3 of the main power supply is normal or not and outputting a main power supply voltage detection signal;
the first AND gate AND1 takes the total output voltage detection signal AND the first inversion main path operation signal N1 as inputs AND outputs a third inversion main path operation signal;
the second AND gate AND2 takes the third inversion main operation signal AND the main power supply voltage detection signal as inputs AND outputs a second inversion main operation signal N2;
the NOT gate NOT receives the second inversion main operation signal N2 as an input, and outputs a second bypass operation signal P2.
The first voltage detection unit J1 is connected to the voltage sampling block 12 AND the first AND gate AND1, respectively, the second voltage detection unit J2 is connected to the voltage sampling block 12 AND the driving unit 132, respectively, the first AND gate AND1 is also connected to the main control block 11 AND the second AND gate AND2, the second AND gate AND2 is also connected to the third voltage detection unit J3, the driving unit 132 AND the NOT gate NOT, AND the NOT gate NOT is connected to the driving unit 132.
In some possible implementations, the voltage sampling module 12 may collect the voltage U3 of the main power source and send it to the third voltage detection unit J3.
The first, second, and third voltage detection units J1, J2, and J3 may be hardware circuits for realizing voltage detection.
For example, the first voltage detection unit J1 may determine that the total output voltage U1 detection signal is "1" when the total output voltage U1 is normal, and determine that the total output voltage U1 detection signal is "0" when the total output voltage U1 is abnormal. The second voltage detection unit J2 may determine that the third bypass operation signal P3 is a third signal, i.e. is "1", when the bypass voltage U2 is normal, and determine that the third bypass operation signal P3 is a fourth signal, i.e. is "0", when the bypass voltage U2 is abnormal. The third voltage detection unit J3 may determine that the main power supply voltage detection signal is "1" when the voltage U3 of the main power supply is normal, and determine that the main power supply voltage detection signal is "0" when the voltage U3 of the main power supply is abnormal. When the total output voltage U1 detection signal is "1" AND the first inversion main path operation signal N1 is the first signal, the first AND gate AND1 determines that the third inversion main path operation signal is the first signal, i.e. is "1", otherwise, determines that the third inversion main path operation signal is the second signal, i.e. is "0". The second AND gate AND2 determines that the second inversion main operation signal N2 is the first signal, i.e. is "1", when the third inversion main operation signal is the first signal AND the main power supply voltage detection signal is "1", otherwise determines that the second inversion main operation signal N2 is the second signal, i.e. is "0". The NOT gate NOT determines that the second bypass operation signal P2 is a fourth signal, namely "0", when the second inversion main operation signal N2 is a first signal, namely "1", and determines that the second bypass operation signal P2 is a third signal, namely "1", when the second inversion main operation signal N2 is a second signal, namely "0".
In some possible implementations, the independent bypass control unit 131 further includes a signal filter connected to the main control module 11 AND the first AND gate AND1, respectively, for signal filtering the first inverted main operation signal N1, AND inputting the filtered first inverted main operation signal N1 to the first AND gate AND1.
In order to ensure the accuracy of the signals, a corresponding signal filter can be added after each signal to filter the signals.
In some embodiments, referring to fig. 3, the independent bypass control unit 131 further includes a latch S1;
the latch S1 is configured to latch the third inversion main operation signal when the third inversion main operation signal output by the first AND gate AND1 is the second signal;
the second AND gate AND2 receives the output signal of the latch S1 AND the main power supply voltage detection signal as inputs, AND outputs a second inversion main operation signal N2.
The latch S1 is connected to the first AND gate AND1 AND the second AND gate AND2, respectively, AND can latch the third inversion main operation signal (second signal) when the third inversion main operation signal is the second signal. When the third inversion main path operation signal is the first signal, it is not latched.
If the latch S1 is not set, it is assumed that the total output voltage U1 is abnormal but the bypass voltage U2 is normal due to a line problem or a device damage problem of the inversion main circuit, at this time, the third inversion main circuit operation signal output by the first AND gate AND1 is a second signal, the second inversion main circuit operation signal N2 output by the second AND gate AND2 is also a second signal, so that the inversion main circuit driving signal D1 output by the driving unit 132 controls the inversion main circuit switch K1 to be turned off, at this time, the bypass voltage U2 is normal, the bypass switch K2 can be controlled to be turned on, by the bypass power supply, after the bypass power supply, the total output voltage U1 is normal, at this time, the inversion main circuit driving signal D1 drives the inversion main circuit switch K1 to be turned on, AND the bypass driving signal D2 controls the bypass switch K2 to be turned off when other conditions are satisfied. However, the problem of line or device damage of the main inverter circuit still exists, and at this time, the total output voltage U1 is abnormal, and the bypass switch K2 is still driven to be turned on, and the main inverter circuit switch K1 is turned off. That is, if the latch S1 is not provided, the inverting main switch K1 and the bypass switch K2 are switched back and forth, which affects reliability.
When the latch S1 is added, the third inverting main operation signal output by the first AND gate AND1 is the second signal due to the above problem, the latch S1 latches the signal, AND the third inverting main operation signal input to the second AND gate AND2 keeps the second signal unchanged, so that the bypass switch K2 is kept on all the time, AND the inverting main switch K1 is turned off all the time AND does not switch back AND forth. Wherein the latch S1 is provided with a corresponding button by which it can be switched to no longer latch.
In some embodiments, referring to fig. 3, the drive unit 132 is further configured to: when the first inversion main path operation signal N1 is a first signal and the second inversion main path operation signal N2 is a first signal, determining that the inversion main path driving signal D1 is a first driving signal, and when the first inversion main path operation signal N1 is a second signal, determining that the inversion main path driving signal D1 is a second driving signal, and when the first bypass operation signal P1 is a third signal and the third bypass operation signal P3 is a third signal, determining that the bypass driving signal D2 is a third driving signal, when the first bypass operation signal P1 is a fourth signal and the second bypass operation signal P2 is a fourth signal, or when the third bypass operation signal P3 is a fourth signal, determining that the bypass driving signal D2 is a fourth driving signal;
a fourth signal is used to indicate that the bypass is not running;
the first driving signal is used for indicating the conduction of the inversion main circuit switch K1 and supplying power to the inversion main circuit; the fourth drive signal is used to instruct the bypass switch K2 to open, bypass not to supply power.
In this embodiment, the driving unit 132 may determine that the inversion main driving signal D1 is the first driving signal, that is, drive the inversion main switch K1 to be turned on when the first inversion main driving signal N1 is the first signal and the second inversion main driving signal N2 is the first signal, and determine that the inversion main driving signal D1 is the second driving signal, that is, control the inversion main switch K1 to be turned off when the first inversion main driving signal N1 is the second signal or the second inversion main driving signal N2 is the second signal. That is, when the main control module 11 instructs the inversion main circuit to operate and the independent bypass control unit 131 instructs the inversion main circuit to operate, the inversion main circuit switch K1 is controlled to be turned on, and the inversion main circuit supplies power; when the main control module 11 indicates that the main inversion circuit is not running or the independent bypass control unit 131 indicates that the main inversion circuit is not running, the main inversion circuit switch K1 is controlled to be turned off, and the main inversion circuit is not powered.
The driving unit 132 is further configured to determine that the bypass driving signal D2 is a third driving signal when the first bypass operation signal P1 is the third signal and the third bypass operation signal P3 is the third signal, or when the second bypass operation signal P2 is the third signal and the third bypass operation signal P3 is the third signal; and determines that the bypass driving signal D2 is the fourth driving signal when the first bypass operation signal P1 is the fourth signal and the second bypass operation signal P2 is the fourth signal, or when the third bypass operation signal P3 is the fourth signal. That is, when the main control module 11 indicates bypass operation and the bypass voltage U2 is normal, or when the independent bypass control unit 131 indicates bypass operation and the bypass voltage U2 is normal due to an abnormality of the total output voltage U1 or an abnormality of the voltage U3 of the main power supply or an indication of the main inverter circuit by the main control module 11, etc., the bypass switch K2 is controlled to be turned on for bypass power supply; when the main control module 11 indicates that the bypass is not operated and the independent bypass control unit 131 indicates that the bypass is not operated, or when the bypass voltage U2 is abnormal, the bypass switch K2 is controlled to be turned off, and the bypass is not powered.
In some embodiments, referring to fig. 3, the driving unit 132 includes a third AND gate AND3, an OR gate OR, AND a fourth AND gate AND4;
The third AND gate AND3 takes the first inversion main operation signal N1 AND the second inversion main operation signal N2 as inputs, AND outputs an inversion main driving signal D1;
the OR gate takes the first bypass operation signal P1 and the second bypass operation signal P2 as inputs, and outputs a fourth bypass operation signal;
the fourth AND gate AND4 receives the third bypass operation signal P3 AND the fourth bypass operation signal as input, AND outputs the bypass driving signal D2.
The third AND gate AND3 is respectively connected to the main control module 11, the independent bypass control unit 131 AND the inverting main switch K1, the OR gate OR is respectively connected to the main control module 11, the independent bypass control unit 131 AND the fourth AND gate AND4, AND the fourth AND gate AND4 is also connected to the independent bypass control unit 131 AND the bypass switch K2.
AND when the first inversion main path operation signal N1 is the first signal AND the second inversion main path operation signal N2 is the first signal, the third AND gate AND3 determines that the inversion main path driving signal D1 is the first driving signal AND drives the inversion main path switch K1 to be conducted, AND the inversion main path is powered on, otherwise, determines that the inversion main path driving signal D1 is the second driving signal AND controls the inversion main path switch K1 to be disconnected, AND the inversion main path is not powered on. OR gate OR determines that the fourth bypass operation signal is the third signal when the first bypass operation signal P1 is the third signal OR the second bypass operation signal P2 is the third signal, otherwise, determines that the fourth bypass operation signal is the fourth signal. AND when the third bypass operation signal P3 AND the fourth bypass operation signal are both third signals, the fourth AND gate AND4 determines that the bypass driving signal D2 is the third driving signal AND drives the bypass switch K2 to conduct AND bypass power supply, otherwise determines that the bypass driving signal D2 is the fourth driving signal AND controls the bypass switch K2 to be disconnected AND the bypass is not powered.
In this application, to avoid common cause failure, each device is an independent device and is not shared. For example, the first AND gate AND1, the second AND gate AND2, the third AND gate AND3, AND the fourth AND gate AND4 are each independent AND gates, AND so on.
In some embodiments, the total output voltage U1 is the voltage after the outputs of the inverting main switch K1 and the bypass switch K2 are connected in parallel; the bypass voltage U2 is an input voltage of the bypass switch K2.
Wherein the bypass is always in a standby state, and when it is not faulty, the bypass voltage U2 can detect a normal voltage even when the bypass switch K2 is not turned on.
Referring to fig. 1, the total output voltage U1 may be the voltage of the first sampling point M1, and the bypass voltage U2 may be the voltage of the second sampling point M2.
According to the embodiment of the application, the total output voltage is adopted to judge whether the inverter main circuit can normally supply power or not when the inverter main circuit supplies power, and the bypass voltage is adopted to judge whether the bypass can normally supply power or not, so that whether the bypass needs to be switched or not is judged. In the prior art, whether the bypass needs to be switched or not is judged by collecting states of the inversion main circuit switch and the bypass switch, for example, bypass power supply is controlled under the condition that the inversion main circuit switch and the bypass switch are both disconnected, and bypass power supply is not switched when the inversion main circuit switch is closed, but the bypass power supply cannot be switched from a conducting state to an disconnecting state when the inversion main circuit switch fails, at the moment, if a certain section of connecting wire or other devices of the inversion main circuit fails to output normal voltage, the bypass power supply needs to be switched, but the inversion main circuit switch is still in the conducting state, the bypass power supply cannot be switched according to control logic, and the power supply output fails under the condition.
In addition, because the inversion main switch and the bypass switch are static switches, the switch states of the inversion main switch and the bypass switch cannot be directly obtained, the most direct and rapid method is to determine the switch states of the inversion main switch and the bypass switch by obtaining driving signals of the inversion main switch and the bypass switch, if a connecting line between the driving of the inversion main switch and the inversion main switch fails and the inversion main switch cannot switch according to the driving signals, if the driving of the inversion main switch indicates that the inversion main switch is closed, the inversion main switch cannot receive the driving signals and cannot be closed and still is in an open state due to the connecting line failure, but the inversion main switch is determined to be closed by detecting the driving signals of the inversion main switch, the bypass switch cannot be driven to be closed according to control logic, but the actual situation is that the inversion main switch is not closed, and the power output is still caused to be powered down at the moment.
The method for collecting the final total output voltage can ensure that the condition of power failure of the output can be accurately judged no matter whether the power failure is caused by the failure of the inversion main circuit switch, the connection failure between the driving of the inversion main circuit switch and the inversion main circuit switch or other devices or other connection failures of the inversion main circuit, and the power failure can be timely switched to bypass power supply, so that the reliability is high.
For the above-described nuclear power supply apparatus including the independent bypass control, the following functional verification was performed to ensure the validity of the scheme.
First, under no-load and full-load conditions, the main control module can normally control the switching of the inversion main circuit and the bypass, and is not influenced by a newly-added independent bypass control unit.
And secondly, simulating the failure of the main power supply, supplying power to the independent bypass control module by the standby bypass power supply, and powering down the main control module, wherein at the moment, the inversion main drive signal outputs a second drive signal, the bypass drive signal outputs a third drive signal, and the bypass is used for supplying power.
Thirdly, the individual wires from the analog driving unit to the inversion main circuit switch fail to be disconnected, so that power is output and lost; the ageing and failure of components of a driving circuit of the simulation inversion main circuit lead to functional failure, and then the output power failure is caused; the analog inversion main circuit switch fails, so that output power is lost; at this time, the inversion main switch is turned off, the total output voltage is abnormal, the bypass switch is turned on, and the bypass is powered.
Fourth, the wire rod unit from the simulation main control module to the driving unit fails to be disconnected, so that power is output and lost; the ageing failure of the switching circuit of the analog main control module leads to the failure of the switching function, thereby leading to the output power failure; at this time, the total output voltage is abnormal, the bypass switch is opened, and bypass power supply is performed.
Fifthly, the fuse of the analog inversion main circuit fails, so that the output power is lost, at the moment, the output voltage of the inversion main circuit suddenly drops, the total output voltage is abnormal, the inversion main circuit switch is closed, and the bypass power supply is switched.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional units and modules is illustrated, and in practical application, the above-described functional distribution may be performed by different functional units and modules according to needs, i.e. the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-described functions. The functional units and modules in the embodiment may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit, where the integrated units may be implemented in a form of hardware or a form of a software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working process of the units and modules in the above system may refer to the corresponding process in the foregoing method embodiment, which is not described herein again.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiments provided herein, it should be understood that the coupling or direct coupling or communication connection shown or discussed with each other may be through some interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.

Claims (10)

1. The nuclear power supply equipment comprising the independent bypass control is characterized by comprising a main control module, an independent bypass control module and a voltage sampling module;
the voltage sampling module is used for collecting the total output voltage and bypass voltage of the nuclear power supply equipment;
The main control module is used for outputting a first inversion main path operation signal and a first bypass operation signal;
the independent bypass control module is used for determining that the inversion main path driving signal is a second driving signal and the bypass driving signal is a third driving signal when the first inversion main path operation signal is a first signal, the total output voltage is abnormal and the bypass voltage is normal; the first signal is used for indicating the inversion main circuit to operate; the inversion main circuit driving signal is used for controlling the state of the inversion main circuit switch, the second driving signal is used for indicating the disconnection of the inversion main circuit switch, and the inversion main circuit is not powered; the bypass driving signal is used for controlling the state of the bypass switch, and the third driving signal is used for indicating the bypass switch to be conducted and bypass power supply.
2. The nuclear power supply apparatus including independent bypass control of claim 1, wherein the independent bypass control module includes an independent bypass control unit and a drive unit;
the independent bypass control unit is used for determining that the second inversion main path operation signal is a second signal and the second bypass operation signal is a third signal when the first inversion main path operation signal is a first signal and the total output voltage is abnormal, and determining that the third bypass operation signal is the third signal when the bypass voltage is normal; the second signal is used for indicating that the inversion main circuit is not operated, and the third signal is used for indicating that the bypass is operated;
The driving unit is used for determining that the inversion main path driving signal is a second driving signal when the first inversion main path operation signal is a first signal and the second inversion main path operation signal is a second signal, and determining that the bypass driving signal is a third driving signal when the second bypass operation signal is a third signal and the third bypass operation signal is a third signal.
3. The nuclear power plant containing independent bypass control of claim 2, wherein the independent bypass control unit is further configured to: when the first inversion main path operation signal is a first signal and the total output voltage is normal, determining that the second inversion main path operation signal is a first signal and the second bypass operation signal is a fourth signal, and when the first inversion main path operation signal is a second signal, determining that the second inversion main path operation signal is a second signal and the second bypass operation signal is a third signal, and when the bypass voltage is abnormal, determining that the third bypass operation signal is a fourth signal;
the fourth signal is used to indicate that the bypass is not running.
4. The nuclear power plant containing independent bypass control of claim 2, further comprising a primary power source and a bypass backup power source;
The main control module is powered by the main power supply, and the driving unit, the independent bypass control unit and the voltage sampling module are powered by the main power supply and the bypass standby power supply together;
the independent bypass control unit is used for determining and outputting the second inversion main path operation signal and the second bypass operation signal according to the first inversion main path operation signal, the total output voltage and the voltage of the main power supply.
5. The nuclear power plant containing independent bypass control according to claim 4, characterized in that the independent bypass control unit is specifically configured to: when the first inversion main path operation signal is a first signal, the total output voltage is normal and the voltage of the main power supply is normal, determining that the second inversion main path operation signal is a first signal and the second bypass operation signal is a fourth signal, and when the first inversion main path operation signal is a second signal, the total output voltage is abnormal or the voltage of the main power supply is abnormal, determining that the second inversion main path operation signal is a second signal and the second bypass operation signal is a third signal;
the fourth signal is used to indicate that the bypass is not running.
6. The nuclear power supply apparatus including independent bypass control of claim 4, wherein the independent bypass control unit includes a first voltage detection unit, a second voltage detection unit, a third voltage detection unit, a first and gate, a second and gate, and a not gate;
the first voltage detection unit is used for detecting whether the total output voltage is normal or not and outputting a total output voltage detection signal;
the second voltage detection unit is used for detecting whether the bypass voltage is normal or not and outputting a third bypass operation signal;
the third voltage detection unit is used for detecting whether the voltage of the main power supply is normal or not and outputting a main power supply voltage detection signal;
the first AND gate takes the total output voltage detection signal and the first inversion main path operation signal as inputs and outputs a third inversion main path operation signal;
the second AND gate takes the third inversion main path operation signal and the main power supply voltage detection signal as inputs and outputs a second inversion main path operation signal;
the NOT gate takes the second inversion main path operation signal as input and outputs a second bypass operation signal.
7. The nuclear power supply apparatus including independent bypass control of claim 6, wherein the independent bypass control unit further comprises a latch;
The latch is used for latching the third inversion main path operation signal output by the first AND gate when the third inversion main path operation signal is the second signal;
the second AND gate takes the output signal of the latch and the main power supply voltage detection signal as inputs, and outputs a second inversion main path operation signal.
8. The nuclear power plant containing independent bypass control of claim 2, wherein the drive unit is further configured to: when the first inversion main path operation signal is a first signal and the second inversion main path operation signal is a first signal, determining that the inversion main path driving signal is a first driving signal, and when the first inversion main path operation signal is a second signal, determining that the inversion main path driving signal is a second driving signal, and when the first bypass operation signal is a third signal and the third bypass operation signal is a third signal, determining that the bypass driving signal is a third driving signal, when the first bypass operation signal is a fourth signal and the second bypass operation signal is a fourth signal, or when the third bypass operation signal is a fourth signal, determining that the bypass driving signal is a fourth driving signal;
The fourth signal is used for indicating that the bypass is not running;
the first driving signal is used for indicating the switch of the inversion main circuit to be conducted, and the inversion main circuit supplies power; the fourth drive signal is used for indicating that the bypass switch is opened, and the bypass is not powered.
9. The nuclear power plant containing independent bypass control of claim 8, wherein the drive unit includes a third and gate, an or gate, and a fourth and gate;
the third AND gate takes the first inversion main path operation signal and the second inversion main path operation signal as input and outputs an inversion main path driving signal;
the OR gate takes the first bypass operation signal and the second bypass operation signal as input and outputs a fourth bypass operation signal;
and the fourth AND gate takes the third bypass operation signal and the fourth bypass operation signal as input and outputs a bypass driving signal.
10. The nuclear power plant including independent bypass control according to any one of claims 1 to 9, wherein the total output voltage is the voltage after the outputs of the main inverter switch and the bypass switch are connected in parallel; the bypass voltage is an input voltage of the bypass switch.
CN202311277199.8A 2023-09-28 2023-09-28 Nuclear power supply equipment comprising independent bypass control Pending CN117394516A (en)

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Application Number Priority Date Filing Date Title
CN202311277199.8A CN117394516A (en) 2023-09-28 2023-09-28 Nuclear power supply equipment comprising independent bypass control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311277199.8A CN117394516A (en) 2023-09-28 2023-09-28 Nuclear power supply equipment comprising independent bypass control

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CN117394516A true CN117394516A (en) 2024-01-12

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