A nuclear power plant maintenance power supply intelligent control device and control method

Abstract

The present invention belongs to the field of nuclear power plant maintenance technology, and specifically relates to an intelligent control device for a nuclear power plant maintenance power supply. The device includes a 380V AC power supply, a circuit breaker QF, a current transmitter TA, a contactor KM, an XS1 socket, a 24V power supply, a PLC2 module, a fingerprint module, a PLC1 module, and an intermediate relay KA. The method includes connecting the maintenance power supply equipment to the XS1 socket, actuating the fingerprint module to emit a fingerprint action signal, which is sequentially transmitted to the PLC1 module and the PLC2 module; the PLC2 module transmits the signal to a backstage monitoring device; the monitoring device receives the signal from the PLC2 module and issues a command to the PLC2 module, which controls the coil of the intermediate relay KA to energize, thereby energizing the XS1 socket; and the PLC2 module transmits the XS1 socket energization signal to a backstage monitor or a mobile phone. The present invention can implement status monitoring and data collection for nuclear power plant maintenance equipment, and restrict the operation of different levels of electricity users through functions such as biometric fingerprint entry.

Description

Technical Field

[0001] The present invention belongs to the technical field of nuclear power plant maintenance, and in particular relates to an intelligent control device and a control method for a nuclear power plant maintenance power supply. Background Art

[0002] During the installation and commissioning of nuclear power plant equipment, maintenance power equipment is frequently used. Existing maintenance power equipment suffers from numerous issues, including a lack of remote control, electrical protection, and real-time monitoring. Current management methods and crude on-site usage of maintenance power equipment fail to meet safety management requirements.

[0003] Therefore, during the use of the maintenance power supply equipment, it is particularly important to be able to remotely control and monitor the status of the maintenance power supply equipment in real time, and to perform electrical protection when a fault occurs. Summary of the Invention

[0004] The purpose of the present invention is to provide an intelligent control device and control method for nuclear power plant maintenance power supply. The control device and control method have functions such as data acquisition, equipment and status monitoring, alarm monitoring, remote communication, real-time data processing and display, and historical data management. They can realize functions such as status monitoring and data acquisition of nuclear power plant maintenance equipment, and limit the operations of electricity users of different levels through functions such as biometric fingerprint entry.

[0005] A technical solution for achieving the objectives of the present invention includes an intelligent control device for a nuclear power plant maintenance power supply, comprising a contactor KM, an XS1 socket, a 24V power supply, a PLC2 module, a fingerprint module, a PLC1 module, and an intermediate relay KA. The output of the contactor KM is connected to the input of the XS1 socket, the coil terminal A1 of the contactor KM is connected to the output of the coil terminal F1 of the intermediate relay KA, the coil terminal B1 of the intermediate relay KA is connected to the terminal CMO of the PLC2 module, and the output of the contact terminal H1 of the contactor KM is connected to the terminal IN4 of the PLC2 module. The terminal V+ of the 24V power supply is connected to the input of the contact terminal H1 of the contactor KM, the terminal DOO of the PLC2 module, and the input of the fingerprint module. The output of the fingerprint module is connected to the terminal IO of the PLC1 module. The terminal V- of the 24V power supply is connected to the terminal 2 of the PLC2 module, the terminal GND of the PLC1 module, and the coil terminal B2 of the intermediate relay KA.

[0006] The contact terminal E1 input end of the contactor KM is connected to the terminal D1 output end of the circuit breaker QF, and the terminal D1 input end of the circuit breaker QF is connected to the A-phase terminal of the 380V AC power supply.

[0007] The N-phase terminal of the 380V AC power supply is connected to the coil terminal F1 output end of the intermediate relay KA, and the C, N, and PE three-phase terminals of the 380V AC power supply are connected to the input terminals L, N, and PE of the 24V power supply respectively.

[0008] The terminal D1 output end of the circuit breaker QF and the contact terminal E1 input end of the contactor KM both pass through the current transmitter TA coil, the terminal G1 of the current transmitter TA is connected to the terminal INO of the PLC2 module, and the terminal G2 of the current transmitter TA is connected to the terminal GND of the PLC2 module.

[0009] The output end of the contact terminal H1 of the contactor KM is connected to the input end of the socket indicator light HY1, and the output end of the socket indicator light HY1 is connected to the terminal V- of the 24V power supply.

[0010] The output ends of the contact terminals E1, E2, and E3 of the contactor KM are respectively connected to the input ends of the XS1 socket.

[0011] The terminals UP1, GND, TXD and RXD of the PLC1 module are connected to the terminals UP1, GND, TXD and RXD of the PLC2 module respectively.

[0012] A method for intelligently controlling a power supply for maintenance of a nuclear power plant, the method comprising the following steps:

[0013] Step 1: Connect the maintenance power supply to the XS1 socket and activate the fingerprint module;

[0014] Step 2: After the fingerprint module is activated, it sends a fingerprint action signal, which is transmitted to the PLC1 module and the PLC2 module in turn;

[0015] Step 3: The PLC2 module sends a signal to the background monitoring device;

[0016] Step 4: The background monitoring device receives the signal from the PLC2 module and sends a command to the PLC2 module. The PLC2 module controls the coil of the intermediate relay KA to be energized, thereby energizing the XS1 socket;

[0017] Step 5: The PLC2 module sends the power signal information of the XS1 socket to the background monitoring device.

[0018] The action process of the fingerprint module in step 1 is as follows: after the user's fingerprint is successfully compared with the fingerprint module, the internal contacts of the fingerprint module are activated and a fingerprint action signal is sent.

[0019] In the step 2, the fingerprint module sends a fingerprint action signal which is input to the PLC1 module through the terminal IO of the PLC1 module, and the PLC1 module sends the received fingerprint action signal to the serial port terminals TXD and RXD of the PLC2 module through the serial port terminals TXD and RXD;

[0020] In the step 3, the PLC2 module receives the signal sent by the PLC1 module and transmits it to the background monitoring device through the PLC2 module.

[0021] The specific steps of step four are as follows: after the background monitoring device receives the signal from the PLC2 module, the PLC2 module outputs the power-on signal of "XS1 socket power on / off-"; at the same time, the relay output terminals CM0 and DO0 of the PLC2 module 8 are internally turned on to energize the coil of the intermediate relay KA, the contact F1 of the intermediate relay KA is attracted, the coil of the contactor KM is energized, and the contacts E1, E2, E3, and H1 of the contactor KM are closed. At this time, the XS1 socket is energized, and at the same time, the socket indicator light HY1 lights up.

[0022] The power signal information in step 5 includes the current information and power-on / off status information of the XS1 socket.

[0023] The beneficial technical effects of the present invention are as follows: (1) The intelligent control device and method for maintenance power supply of a nuclear power plant of the present invention can realize biometric identification of maintenance power supply, and restrict the operation of different levels of electricity users by recording fingerprints and other functions. (2) The intelligent control device and method for maintenance power supply of a nuclear power plant of the present invention can realize digitization, so that various faults and current parameters of maintenance power supply can be directly displayed and recorded on the terminal. (3) The intelligent control device and method for maintenance power supply of a nuclear power plant of the present invention can realize informatization, and can realize remote monitoring of on-site power consumption data of maintenance power supply box through the network. (4) The intelligent control device and method for maintenance power supply of a nuclear power plant of the present invention can realize mobile Internet, and the terminal can realize real-time monitoring on mobile phones in addition to computers. (5) The intelligent control device for maintenance power supply of a nuclear power plant of the present invention can realize electrical protection of maintenance power supply box, that is, it can realize protection tripping after the equipment has short circuit, overload, lightning protection and other conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a circuit diagram of an intelligent control device for maintenance power supply of a nuclear power plant provided by the present invention;

[0025] Figure 2 This invention provides a terminal wiring diagram and instruction content of the PLC1 module of a nuclear power plant maintenance power supply intelligent control device.

[0026] Figure 3The present invention provides a terminal wiring diagram and instruction content of a PLC2 module of an intelligent control device for maintenance power supply of a nuclear power plant.

[0027] Figure 1 Middle: 1. 380V AC power supply, 2. Circuit breaker QF, 3. Current transmitter TA, 4. Contactor KM, 5. XS1 socket, 6. 24V power supply, 7. Socket indicator HY1, 8. PLC2 module, 9. Fingerprint module, 10. PLC1 module, 11. Intermediate relay KA;

[0028] Figure 2 Middle: 10.PLC1 module;

[0029] Figure 3 Chinese: 8.PLC2 module. DETAILED DESCRIPTION

[0030] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0031] like Figure 1 As shown, the present invention provides an intelligent control device for maintenance power supply of a nuclear power plant, which includes a 380V AC power supply 1, a circuit breaker QF2, a current transmitter TA3, a contactor KM4, an XS1 socket 5, a 24V power supply 6, a socket indicator HY17, a PLC2 module 8, a fingerprint module 9, a PLC1 module 10, and an intermediate relay KA11. Figure 1 In the figure, the three PLC2 modules 8 are the same PLC2 module, the three contactors KM4 are the same contactor, and the two intermediate relays KA11 are the same intermediate relay.

[0032] The A, B, and C phase terminals of the 380V AC power supply 1 are connected to the input terminals of terminals D1, D2, and D3 of circuit breaker QF2, respectively. The output terminals of terminals D1, D2, and D3 of circuit breaker QF2 are connected to the input terminals of contact terminals E1, E2, and E3 of contactor KM4, respectively. The output terminals of contact terminals E1, E2, and E3 of contactor KM4 are connected to the input terminals of XS1 socket 5, respectively. The wire connecting the output terminal of terminal D1 of circuit breaker QF2 to the input terminal of contact terminal E1 of contactor KM4 passes through the coil of current transmitter TA3. Terminal G1 of current transmitter TA3 is connected to terminal INO of PLC2 module 8, and terminal GND of PLC2 module 8 is connected to terminal G2 of current transmitter TA3. The output of terminal D3 of circuit breaker QF2 is connected to coil terminal A2 of contactor KM4. Coil terminal A1 of KM4 is connected to the output of coil terminal F1 of intermediate relay KA11. The output of coil terminal F1 of intermediate relay KA11 is connected to the N-phase terminal of 380V AC power supply 1. The C, N, and PE phase terminals of 380V AC power supply 1 are respectively connected to input terminals L, N, and PE of 24V power supply 6. Terminal V+ of 24V power supply 6 is connected to the input of contact terminal H1 of contactor KM4. The output of contact terminal H1 of contactor KM4 is respectively connected to the input of socket indicator light HY17 and terminal IN4 of PLC2 module 8. The output of socket indicator light HY17 and terminal 2 of PLC2 module 8 are respectively connected to terminal V- of 24V power supply 6. Terminal V+ of the 24V power supply 6 is connected to the input of the fingerprint module 9, the output of the fingerprint module 9 is connected to terminal IO of the PLC1 module 10, and terminal GND of the PLC1 module 10 is connected to terminal V- of the 24V power supply 6. Terminal V+ of the 24V power supply 6 is connected to terminal DOO of the PLC2 module 8, terminal CMO of the PLC2 module 8 is connected to coil terminal B1 of the intermediate relay KA11, and coil terminal B2 of the intermediate relay KA11 is connected to terminal V- of the 24V power supply 6.

[0033] like Figure 2 As shown, terminal 10 of PLC1 module 10 is connected to the output terminal of fingerprint module 9, indicating that the instruction content of PLC1 module 10 is the input of the fingerprint module's actuating contact. Terminals UP1, GND, TXD, and RXD of PLC1 module 10 are connected to terminals UP1, GND, TXD, and RXD of PLC2 module 8, respectively, indicating that the instruction content of PLC1 module 10 is divided into serial port device → T40S, ground, serial port device → T40S, and serial port device → T40S.

[0034] like Figure 3As shown, terminals UP1, GND, TXD, and RXD of PLC2 module 8 are connected to terminals UP1, GND, TXD, and RXD of PLC1 module 10, respectively, indicating that the instructions from PLC2 module 10 are standby, common ground, TTL-level serial port 1 send, and TTL-level serial port 1 receive. Terminal DOO of PLC2 module 8 is connected to V+ of the 24V power supply, indicating that the instructions from PLC2 module 8 are to gain or lose power to the + side of the XS1 socket. Terminal CMO of PLC2 module 8 is connected to terminal B1 of intermediate relay KA11, indicating that the instructions from PLC2 module 8 are to gain or lose power to the - side of the XS1 socket. Terminal INO of PLC2 module 8 is connected to terminal G2 of current transmitter TA3, indicating that the instructions from PLC2 module 8 are to provide current feedback to the XS1 socket 5. Terminal GND of PLC2 module 8 is connected to terminal G1 of current transmitter TA3, indicating that the instructions from PLC2 module 8 are to provide GND of analog channels 0-3. Terminal IN4 of PLC2 module 8 is connected to the output terminal of terminal F1 of contactor KM4, indicating that the instruction content of PLC2 module 8 is to provide feedback on the power status of XS1 socket 5. Terminal 2M of PLC2 module 8 is connected to terminal V- of 24V power supply 6, indicating that the instruction content of PLC2 module 8 is to provide GND of channels 4-7.

[0035] like Figure 1 、 2 As shown in FIG3 , the present invention provides a method for intelligent control of power supply for maintenance of nuclear power plants. The specific steps of the method are as follows:

[0036] Step 1: Connect the maintenance power supply to the XS1 socket 5 and activate the fingerprint module 9. Power from the 380V AC power source 1 flows through circuit breaker QF2 to the input of contact terminal E of contactor KM4. While power is present at the input of contact E of contactor KM4, the contacts of contactor KM4 are not closed, and the socket is not receiving power. Contact terminal D of circuit breaker QF2 is closed. The fingerprint module 9 operates as follows: the user's fingerprint is compared with the fingerprint module 9. If the fingerprint is successfully matched, the internal contacts of the fingerprint module 9 activate, emitting a fingerprint action signal.

[0037] Step 2: After the fingerprint module 9 is activated, it sends a fingerprint action signal, which is transmitted to the PLC1 module 10 and the PLC2 module 8 in sequence.

[0038] The internal contacts of the fingerprint module 9 are actuated, and a fingerprint action signal is sent to the PLC1 module 10 through the terminal IO of the PLC1 module 10. The PLC1 module 10 converts the received fingerprint action signal into an electrical signal of the XS1 socket 5 and sends it to the PLC2 module 8 through the serial port terminals TXD and RXD.

[0039] Step 3: PLC2 module 8 sends a signal to the background monitoring device.

[0040] After the PLC2 module 8 receives the power signal of the XS1 socket 5 sent by the PLC1 module 10, it is transmitted wirelessly to the background monitor or mobile phone through the PLC2 module 8.

[0041] Step 4: The background monitoring device receives the power socket 5 from PLC2 module 8 and sends a command to PLC2 module 8. PLC2 module 8 controls the coil of the intermediate relay KA11 to be energized, thereby energizing the XS1 socket 5.

[0042] After receiving the power-on socket notification from PLC2 module 8, the backend monitor or mobile phone sends a confirmation signal to PLC2 module 8. Upon receiving the confirmation signal, PLC2 module 8 issues the "XS1 socket power-on / off control" power-on command. Simultaneously, PLC2 module 8's relay output terminals CM0 and DO0 conduct, energizing the coil of intermediate relay KA11. This energization closes contact F1 of intermediate relay KA11, energizing the coil of contactor KM4. After the coil of contactor KM4 is energized, the contacts E1, E2, E3, and H1 of contactor KM4 are closed. At this time, the XS1 socket 5 is energized. At this time, there is current in the loop passing through the coil of the current transmitter 3. At this time, the current transmitter 3 collects the analog current information of the socket and sends it to the terminals INO and GND of the PLC2 module 8 through the terminals G1 and G2 of the current transmitter 3. The information is transmitted to the PLC2 module 8, and the socket indicator light HY17 lights up.

[0043] Step 5: PLC2 module 8 sends the power signal information of XS1 socket 5 to the background monitoring device

[0044] The PLC2 module 8 wirelessly sends the current information and power status information of the XS1 socket 5 to the background monitor or mobile phone, displays it on the screen, and stores the information at the same time; thereby realizing data collection, status monitoring, alarm monitoring, remote communication, real-time data processing and display, historical data management, etc. of the XS1 socket 5.

[0045] The intelligent control device for maintenance power supply of a nuclear power plant provided by the present invention is illustrated using a maintenance power socket as an example. Users can add maintenance power sockets according to their actual situation. They only need to add corresponding circuit breakers, contactors, intermediate relays, and indicator lights. The spare terminals of the PLC module can be used directly.

[0046] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. However, the present invention is not limited to the above embodiments. Various modifications can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention. Any content not described in detail in the present invention may be adapted from existing technologies.

Claims

1. An intelligent control device for power supply for maintenance of a nuclear power plant, characterized by: The device comprises a contactor KM (4), an XS1 socket (5), a 24V power supply (6), a PLC2 module (8), a fingerprint module (9), a PLC1 module (10) and an intermediate relay KA (11), wherein the output end of the contactor KM (4) is connected to the input end of the XS1 socket (5), the coil terminal A1 of the contactor KM (4) is connected to the coil terminal F1 output end of the intermediate relay KA (11), the coil terminal B1 of the intermediate relay KA (11) is connected to the terminal CMO of the PLC2 module (8), the contact terminal H1 output end of the contactor KM (4) is connected to the terminal IN4 is connected; the terminal V+ of the 24V power supply (6) is connected to the contact terminal H1 input end of the contactor KM (4), the terminal DOO of the PLC2 module (8), and the input end of the fingerprint module (9), the output end of the fingerprint module (9) is connected to the terminal IO of the PLC1 module (10), the terminal V- of the 24V power supply (6) is connected to the terminal 2M of the PLC2 module (8), the terminal GND of the PLC1 module (10), and the coil terminal B2 of the intermediate relay KA (11); the input ends of the terminals D1, D2, and D3 of the circuit breaker QF (2) are connected to the terminals D1, D2, and D3 of the 380V AC power supply (1). The three-phase terminals A, B, and C are connected; the N-phase terminal of the 380V AC power supply (1) is connected to the coil terminal F1 output of the intermediate relay KA (11), and the C, N, and PE-phase terminals of the 380V AC power supply (1) are connected to the input terminals L, N, and PE of the 24V power supply (6) respectively; the output terminals D1, D2, and D3 of the circuit breaker QF (2) are connected to the input terminals E1, E2, and E3 of the contactor KM (4) respectively; the output terminal D1 of the circuit breaker QF (2) and the input terminal E1 of the contactor KM (4) are both connected through the coil of the current transmitter TA (3), and the current transmitter The terminal G1 of the current transmitter TA (3) is connected to the terminal INO of the PLC2 module (8), and the terminal G2 of the current transmitter TA (3) is connected to the terminal GND of the PLC2 module (8); the output end of the terminal D3 of the circuit breaker QF (2) is connected to the coil terminal A2 of the contactor KM4; the output end of the contact terminal H1 of the contactor KM (4) is connected to the input end of the socket indicator HY1 (7), and the output end of the socket indicator HY1 (7) is connected to the terminal V- of the 24V power supply (6); the output ends of the contact terminals E1, E2, and E3 of the contactor KM (4) are respectively connected to the input end of the XS1 socket (5); the terminals UP1, GND, TXD, and RXD of the PLC1 module (10) are respectively connected to the terminals UP1, GND, TXD, and RXD of the PLC2 module (8).

2. A control method for a nuclear power plant maintenance power supply intelligent control device according to claim 1, characterized in that: The method comprises the following steps: Step 1: Connect the maintenance power supply device to the XS1 socket (5) and activate the fingerprint module (9); Step 2: After the fingerprint module (9) is activated, it sends a fingerprint action signal, which is transmitted to the PLC1 module (10) and the PLC2 module (8) in sequence; Step 3: PLC2 module (8) sends a signal to the background monitoring device; Step 4: The background monitoring device receives the signal sent by the PLC2 module (8), sends a command to the PLC2 module (8), and the PLC2 module (8) controls the coil of the intermediate relay KA (11) to be energized, thereby energizing the XS1 socket (5); Step 5: The PLC2 module (8) sends the power signal information of the XS1 socket (5) to the background monitoring device.

3. The control method of the intelligent control device for maintenance power supply of a nuclear power plant according to claim 2, characterized in that: The action process of the fingerprint module (9) in step 1 is as follows: after the user's fingerprint is successfully compared with the fingerprint module (9), the internal contacts of the fingerprint module (9) are actuated to send out a fingerprint action signal.

4. The control method of the intelligent control device for maintenance power supply of a nuclear power plant according to claim 3, characterized in that: In the step 2, the fingerprint module (9) sends a fingerprint action signal to the serial port terminals TXD and RXD, which is input to the PLC1 module (10) through the terminal IO of the PLC1 module (10). The PLC1 module (10) sends the received fingerprint action signal to the serial port terminals TXD and RXD of the PLC2 module (8) through the terminal TXD.

5. The control method of the intelligent control device for maintenance power supply of a nuclear power plant according to claim 4, characterized in that: In step 3, the PLC2 module (8) receives the signal sent by the PLC1 module (10) and transmits it to the background monitoring device through the PLC2 module (8).

6. The control method of the intelligent control device for maintenance power supply of a nuclear power plant according to claim 5, characterized in that: The specific steps of step 4 are as follows: after the backstage monitoring device receives the signal sent by the PLC2 module (8), the PLC2 module (8) outputs the power-on signal of "XS1 socket power-off-"; at the same time, the relay output terminals CM0 and DO0 of the PLC2 module 8 are internally connected, so that the coil of the intermediate relay KA (11) is energized, the contact F1 of the intermediate relay KA (11) is attracted, the coil of the contactor KM (4) is energized, and the contacts E1, E2, E3, and H1 of the contactor KM (4) are closed. At this time, the XS1 socket (5) is energized, and at the same time, the socket indicator HY1 (7) lights up.

7. The control method of the intelligent control device for maintenance power supply of a nuclear power plant according to claim 6, characterized in that: The power signal information in step 5 includes the current information and power-on / off status information of the XS1 socket (5).

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