CN113488211B - Control method for high-temperature gas cooled reactor plant water system based on MACS6 platform - Google Patents

Control method for high-temperature gas cooled reactor plant water system based on MACS6 platform Download PDF

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CN113488211B
CN113488211B CN202110798058.5A CN202110798058A CN113488211B CN 113488211 B CN113488211 B CN 113488211B CN 202110798058 A CN202110798058 A CN 202110798058A CN 113488211 B CN113488211 B CN 113488211B
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pump
standby
flag variable
variable
mode
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CN113488211A (en
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雷川
刘志明
刘燕
房俊生
张智军
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Huaneng Shandong Shidaobay Nuclear Power Co Ltd
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Huaneng Shandong Shidaobay Nuclear Power Co Ltd
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    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
    • G21C15/02—Arrangements or disposition of passages in which heat is transferred to the coolant; Coolant flow control devices
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
    • G21C15/18—Emergency cooling arrangements; Removing shut-down heat
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
    • G21C15/24—Promoting flow of the coolant
    • G21C15/243—Promoting flow of the coolant for liquids
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

Abstract

A control method for a high-temperature gas-cooled reactor plant water system based on a MACS6 platform comprises three module control methods of a switching module QH1_1 one-operation one-standby maintenance mode, a rotation module LH1_2 one-operation two-standby mode and a voltage loss module SY2_1 two-operation one-standby mode.

Description

Control method for high-temperature gas cooled reactor plant water system based on MACS6 platform
Technical Field
The invention belongs to a process control method in the technical field of DCS control systems, and particularly relates to a control method for a water system of a high-temperature gas cooled reactor plant based on a MACS6 platform and application thereof.
Background
A global first pebble bed module type high-temperature gas cooled reactor commercial demonstration power station which is independently researched and developed and constructed in China is one of 16 major scientific and technological specialties in China and belongs to the fourth-generation nuclear power technology. The design requirement of the plant water system is that various automatic operation working conditions are realized according to different seasons, so that the system has more operation working conditions, the automatic sequence control logic is high, and a standard module similar to the sequential control of the plant water system of the pebble-bed modular high-temperature gas-cooled reactor is not provided in the construction and debugging process of the conventional nuclear power station. The conventional logic configuration mode of the MACS6 platform is to implement a relatively simple sequential control function by combining a standard and-or module, a standard sequential control module, and an equipment control module. However, the automatic sequence control logic of the complex system under multiple operating conditions is difficult to implement, the normal execution of the sequence control logic step is difficult to ensure, multiple complex operating condition logics have multiple uncertainty problems, the configuration modification difficulty in the system debugging process is large, the potential risk after modification is difficult to control, and the risk is brought to the automatic operation of the system.
Disclosure of Invention
The purpose of the invention is: in order to overcome the defects of the prior art, a special module which is used for the process control of the water system of the high-temperature gas cooled reactor plant and has the functional characteristics of high integration level, modular structure, convenience in logic configuration and maintenance, centralized function, independent automatic completion of presetting and the like is developed based on the MACS6 platform.
The technical scheme adopted by the invention is as follows:
the control method for the high-temperature gas cooled reactor plant water system based on the MACS6 platform comprises three modules, namely a switching module QH1_1 one-operation one-standby one-overhaul mode, a module LH1_2 one-operation two-standby mode and a module SY2_1 two-operation one-standby mode, wherein the switching module QH1_1 one-operation one-standby one-maintenance mode is adopted;
the three modes are built by adopting standard functional modules of AND, OR, NOT, SEL and TP doors, the equipment switching function of working conditions of one operation for one standby, one operation for two standby and one operation for two standby is realized, namely when the operation equipment has a fault or/and the system operation pressure is abnormal, the switching operation of the equipment can be automatically realized, the state of the fault equipment is automatically arranged at the maintenance position, and the system operation mode is automatically switched.
The one-operation one-standby one-overhaul mode of the switching module QH1_1 comprises the following technical characteristics: the system comprises a system automatic control mode 1, a pump running mode 2, a pump standby mode 3, a pump maintenance mode 4, a system pressure low interlock 5, a running pump running state 6, a pressure low signal 7, an electrical fault 8, a 1# bus voltage loss 9, a standby valve off state 10, a standby pump on-off state 11, a standby pump running state 12, a standby valve on state 13, a running valve off state 14, a running pump on-off state 15, a start completion 16, a reset button 17, a switch standby valve 18, a pressure low zero clearing interlock 19, a standby pump start control 20, a standby valve on-off control 21, a switch running valve control 22, a stop running pump running control 23, a standby pump running mode 24, a running pump maintenance mode 25 and a standby pump maintenance mode 26.
Module LH1_2 first-in-second-standby mode includes the following technical features: system automatic control mode 1, pump run 1 mode 2, pump 1 backup 1 mode 3, pump 2 backup 2 mode 4, system pressure low interlock 5, run pump run state 6, start alternate control signal 7, bus 1 loss of voltage 8, bus 2 loss of voltage 9, backup valve 1 off state 10, backup pump 1 on/off state 11, backup pump 1 run state 12, backup valve 1 on state 13, run valve off state 14, run pump shutdown state 15, run pump on/off state 16, backup valve 2 off state 17, backup pump 2 on/off state 18, backup pump 2 run state 19, backup valve 2 on state 20, backup pump 1 remote/local state 21, start complete 22, reset button 23, close backup valve 124, pressure low interlock clear 25, close backup valve 226, backup pump 1 start control 27, backup valve 1 on control 28, run valve off control 29, stop run pump control 30, start control 30, and start control, A standby pump 1-set operation 1 mode 31, a standby pump 2-set standby 1 mode 32, a standby pump 2 start control 33, a standby valve 2 on control 34, a standby pump 2-set operation 1 mode 35, an operating pump-set standby 2 mode 36, an operating pump-set standby 1 mode 37, and a standby pump 1-set maintenance mode 38.
The module SY2_1 comprises the following technical features: the system comprises a system automatic control mode 1, a pump 1 operation mode 1 and 2, a pump 2 operation mode 2 and 3, a pump standby mode 4, a system pressure low interlock 5, an operation pump 1 operation state 6, an operation pump 2 operation state 7, a bus voltage loss 8, a standby valve off state 9, a standby pump on-off state 10, a standby valve on state 11, an operation pump 1 on-off state 12, a start completion 13, a reset button 14, a standby pump operation state 15, a standby valve off control 16, a pressure low interlock zero clearing 17, a standby pump start control 18, a standby valve on control 19, a stop operation pump 1 control 20, a standby pump device operation mode 1 21 and an operation pump 1 device maintenance mode 22.
Has the advantages that: the system can efficiently and accurately complete the seasonal control function of the water system design of the pebble-bed high-temperature gas-cooled reactor in spring, summer, autumn and winter, and has the characteristics of simple configuration, clear interface, modular configuration and convenience in maintenance; and the module can be expanded according to the actual condition, meets the similar process control requirements of other systems, and is convenient for the transformation and application of the later logic configuration.
Drawings
FIG. 1 is a schematic diagram of a QH1_1 special module for one-in-one-standby-one maintenance mode;
FIG. 2 is a schematic diagram of a special module for LH1_2 standby mode;
FIG. 3 is a diagram of a specific module of SY2_1 dual mode and one standby mode;
FIG. 4 is a schematic diagram of the internal schematic diagram design process of the QH1_1 one-in-one-standby-one maintenance mode;
FIG. 5 is a schematic diagram illustrating an internal schematic diagram design process of the LH1_2 one-running-two-standby mode;
FIG. 6 is a schematic diagram of the internal schematic diagram design process of SY2_1 dual mode and single standby mode.
Detailed Description
A control module for a water system of a high-temperature gas cooled reactor plant comprises a module QH1_1, a module LH1_2 and a module SY2_ 1.
The working principle of the invention is as follows:
the main equipment of the water system for the high-temperature gas cooled reactor plant comprises 3 circulating water pumps, 3 water pump outlet valves and the like, and a control module for customizing the functions of the water system for the plant is customized according to the running mode, remote/local state, standby state, fault switching and other signals of the system equipment and according to the corresponding working conditions of one-running-two-standby, one-running-one-standby and one-maintenance and two-running-one-standby in different seasons. As shown in the modules of fig. 1, 2 and 3, the and, or, nor, SEL and TP modules are used inside the system to implement the switching function of the equipment under the operating conditions of one operation, two standby operation, one standby operation and one maintenance, and two operation and one standby operation, that is, when the operating equipment has a fault, the system operating pressure is abnormal, the switching operation of the equipment can be automatically implemented, and the state of the faulty equipment is automatically set to the maintenance position, and the system operating mode is automatically switched. The schematic diagram design process of the one-operation-one-standby-one-overhaul mode in the QH1_1 module in FIG. 4 is as follows:
step 1: judging whether a system automatic control MODE flag variable AUTO _ MODE (1), a pump operation MODE flag variable XG61(2), a pump standby MODE flag variable XG63(3), a pump overhaul MODE flag variable XG65 (4'), a system pressure low interlocking flag variable YLD (5) and an operation pump operation state flag variable XG41(6) all meet 1, manually operating a pulse with a reset button flag variable RES (23) of 1 to carry out module initialization, enabling the system to enter an operation-standby-overhaul automatic control MODE, and enabling a sequential control module sequential control available internal variable AM1 to be 1;
step 2: when the electric fault mark variable AP6143(8 ') or the pressure low signal variable YLDK (7')Is full ofIf the value is 1, setting the sequence control STEP to be 1 (namely, the STEP is 1), and if the sequence control STEP is 1, setting a pressure low interlock clear flag variable YLD0(25) to be 1, clearing a pressure low interlock signal, and setting a sequence control available internal variable AM1 of the sequence control module to be 0;
and step 3: if the 1# bus voltage loss flag variable MXSY1(8) is 0, setting the sequence control STEP to be 2 (namely, STEP is equal to 2), triggering the interlocking action of the backup pump and the valve by judging that the sequence control STEP is 2 (namely, STEP is equal to 2), setting the mark variable AA63XB22(24) of the closed backup valve to be 1, controlling the valve to close, and entering the STEP 4; if the 1# bus voltage loss flag variable MXSY1(8) is 1, setting the sequence control STEP to 22 (i.e., STEP is equal to 22), judging that the sequence control STEP is 22 (i.e., STEP is equal to 22), setting the running pump electrical appliance fault flag variable AP6143 (8') to 1, setting the standby pump maintenance mode flag variable AP6365_ C (38) to 1, setting the standby pump maintenance mode, and entering STEP 9;
and 4, step 4: when the spare valve-off state flag variable AA63XB02(10) is 1 and the sequence control STEP is judged to be 2, the sequence control STEP is set to 3 (i.e., STEP is equal to 3), and when the sequence control STEP is judged to be 3 (i.e., STEP is equal to 3), the output of the spare pump start control flag variable AP63XB21(27) is 1, so as to start the spare pump;
and 5: when the forward control STEP is 3 and the standby pump switch state flag variable AP63XB15(11) and the standby pump running state flag variable AP6341(12) are both 1, setting the forward control STEP to 4 (i.e., STEP is 4), and when the forward control STEP is judged to be 4 (i.e., STEP is 4), outputting the standby valve switch control flag variable AA63XB21(28) to 1 to switch on the standby valve;
step 6: when the forward control STEP is 4 (i.e., STEP ═ 4) and the standby valve open state flag variable AA63XB01(13) is 1, the forward control STEP is set to 5 (i.e., STEP ═ 5). When the STEP of the sequence control is judged to be 5 (namely, the STEP is 5), the output of a control mark variable AA61XB22(29) of the operation valve 1 is closed to be 1 so as to close the operation valve 1;
and 7: when the STEP of the forward control STEP is 5 (i.e., STEP ═ 5) and the running off state flag variable AA61XB02(14) is 1, the STEP of the forward control STEP is set to 6 (i.e., STEP ═ 6). When the forward control STEP sequence STEP is judged to be 6 (namely, the STEP is 6), the output of the shutdown pump control flag variable AP61XB22(30) is 1 so as to shutdown the pump;
and step 8: when the STEP of the forward control STEP is 6 (i.e., STEP ═ 6) and the running pump switch state flag variable AP61XB15(16) is 0, the STEP of the forward control STEP is set to 7 (i.e., STEP ═ 7). When the sequence control STEP is judged to be 7 (namely, the STEP is 7), outputting a standby pump operation mode flag variable AP6361_ C (31) and an operation pump maintenance mode flag variable AP6165_ C (39) to be 1, setting the standby pump to be an operation mode, and setting the operation pump to be a maintenance mode;
and step 9: when the forward control STEP is judged to be 7 (i.e., STEP is 7) and the start completion flag variable QDWC (22) is 1, or the manual reset flag variable RES (23) is 1, the forward control STEP is set to 0 (i.e., STEP is 0), and the forward control flow is ended.
The module can realize that system equipment is under one fortune one is equipped with one and overhauls the operating mode, when system equipment or system parameter appear unusually (surpass the normal scope of design operation promptly), can accomplish the start-up switching between different equipment in the very short time automatically, the automatic sign of equipment state, according to the automatic different operational mode of setting system of the state of equipment, accomplish the automatic high-efficient operation of unmanned on duty of system, very big reduction operating personnel's operation and judgement risk, the input of power plant operation supervision dish manpower has been reduced.
As shown in the module LH1_2 in fig. 2, standard modules such as and, or, nor, SEL, and TP are used for building the inside of the module, so as to implement a device alternate operation function under a one-operation-two-standby operation condition, i.e., periodically performing one-key alternate operation on devices operating in a system, ensuring that a single device is in an operation state for a long time, reducing the failure rate of the device, and automatically switching the operation state and the operation mode of the device. The schematic diagram design process of the one-running-two-standby mode inside the LH1_2 module in fig. 5 is as follows:
step 1: judging whether a system automatic control MODE flag variable AUTO _ MODE (1), a pump operation 1 MODE flag variable XG61(2), a pump 1 standby 1 MODE flag variable XG63(3), a pump 2 standby 2 MODE flag variable XG64(4), a system pressure low interlocking flag variable YLD (5) and an operation pump operation state flag variable XG41(6) all meet 1, manually operating a pulse with a reset button flag variable RES (23) of 1 to initialize a module, and enabling the system to enter a one-operation two-standby automatic control MODE;
step 2: when the start toggle control signal flag variable QDLH (7) is 1, the sequence STEP is set to 1 (i.e., STEP ═ 1). When the sequence control STEP is judged to be 1, setting an internal variable AM1 available for sequence control of a sequence control module to be 0, setting a pressure low interlock zero clearing flag variable YLD0(25) to be 1, and clearing a pressure low interlock signal;
and step 3: when the bus 1 voltage loss flag variable MXSY1(8) is 0, setting the sequence control STEP to 2 (i.e., STEP is equal to 2), and when the sequence control STEP is judged to be 2 (i.e., STEP is equal to 2), setting the flag variable AA63XB22(24) of the closed standby valve 1 to 1, closing the standby valve 1, and entering STEP 4; when the busbar 1 no-voltage flag variable MXSY1(8) is 1 and the busbar 2 no-voltage flag variable MXSY2(9) is 0, setting the sequence control STEP to 22 (i.e., STEP is 22), and when the sequence control STEP is determined to be 22 (i.e., STEP is 2), setting the backup valve 2 closing flag variable AA64XB22(26) to 1, closing the backup valve 2, and entering STEP 10;
and 4, step 4: when the standby valve 1-off state flag variable AA63XB02(10) is 1 and the STEP of the sequence control is determined to be 2 (i.e., STEP ═ 2), setting the STEP of the sequence control to 3 (i.e., STEP ═ 3), and when the STEP of the sequence control is determined to be 3 (i.e., STEP ═ 3), setting the standby pump 1-on control flag variable AP63XB21(27) to 1, and starting the standby pump 1;
and 5: when both the backup pump 1 switch state flag variable AP63XB15(11) and the backup pump 1 operation state flag variable AP6341(12) are 1 and the STEP of the forward control STEP is judged to be 3 (i.e., STEP ═ 3), the STEP of the forward control STEP is set to 4 (i.e., STEP ═ 4). When the sequence control STEP is judged to be 4 (namely, the STEP is 4), setting the standby valve 1 opening control flag variable AA63XB21(28) to be 1, and controlling the standby valve 1 to be opened;
step 6: when the standby valve 1 open state flag variable AA63XB01(13) is 1 and the STEP of the forward control STEP is judged to be 4 (i.e., STEP is equal to 4), the STEP of the forward control STEP is set to 5 (i.e., STEP is equal to 5). When the STEP of the sequential control is judged to be 5 (namely, the STEP is 5), setting an operation valve closing control flag variable AA61XB22(29) to be 1, and controlling the operation valve to be closed;
and 7: when the operating valve off state flag variable AA61XB02(14) is 1 and the STEP-in-sequence STEP is judged to be 5 (i.e., STEP ═ 5), the STEP-in-sequence STEP is set to 6 (i.e., STEP ═ 6). When the sequential control STEP sequence is judged to be 6 (namely, the STEP is 6), setting an off-running pump control flag variable AP61XB22(30) to be 1, and controlling the running pump to be off;
and 8: when the running pump switch state flag variable AP61XB15(16) is 0 and the running pump off state flag variable AP61XG42(15) is 1, and the STEP of the forward control STEP is judged to be 6 (i.e., STEP ═ 6), the STEP of the forward control STEP is set to 7 (i.e., STEP ═ 7). When the sequence control STEP is judged to be 7 (that is, STEP is 7), setting the standby pump 2 standby 1-mode flag variable AP6463_ C (32), the standby pump 1 operation 1-mode flag variable AP6361_ C (31) and the operation pump standby 2-mode flag variable AP6164_ C (36) to be 1, that is, setting the standby pump 2 to be in a standby 1-mode state, setting the standby pump 1 to be in an operation 1-mode state, and setting the operation pump to be in a standby 2-mode state;
and step 9: when the start completion flag variable QDWC (22) is 1 and the sequence STEP is determined to be 7 (i.e., STEP ═ 7), the sequence flow ends.
Step 10: when the standby valve 2 off state flag variable AA64XB02(17) is 1 and the STEP-in-sequence STEP is judged to be 22 (i.e., STEP ═ 22), the STEP-in-sequence STEP is set to 23 (i.e., STEP ═ 23). When the STEP of the sequential control procedure is judged to be 23 (that is, the STEP is 23), the start control flag variable AP64XB21(33) of the backup pump 2 is set to 1, and the backup pump 2 is started;
step 11: when both the backup pump 2 switch state flag variable AP64XB15(18) and the backup pump 2 run state flag variable AP6441(19) are 1 and the STEP of the forward control STEP is determined to be 23 (i.e., STEP ═ 23), the STEP of the forward control STEP is set to 24 (i.e., STEP ═ 24). When the STEP of the sequence control is judged to be 24 (namely, the STEP is 24), setting an opening control flag variable AA64XB21(34) of the standby valve 2 to be 1, and controlling the standby valve 2 to be opened;
step 12: when the standby valve 2 open state flag variable AA64XB01(20) is 1 and the STEP-by-STEP is judged to be 24 (i.e., STEP ═ 24), the STEP-by-STEP is set to 25 (i.e., STEP ═ 25). When the STEP of the sequential control procedure is judged to be 25 (namely the STEP is 25), setting an operation valve closing control mark variable AA61XB22(29) to be 1, and controlling the operation valve to be closed;
step 13: when the operating valve off state flag variable AA61XB02(14) is 1 and the STEP-in-sequence STEP is judged to be 25 (i.e., STEP ═ 25), the STEP-in-sequence STEP is set to 26 (i.e., STEP ═ 26). When the STEP of the sequential control procedure is judged to be 26 (namely, the STEP is 26), setting an off-running pump control flag variable AP61XB22(30) to be 1, and controlling the running pump to be off;
step 14: when the running pump switch state flag variable AP61XB15(16) is 0 and the running pump off state flag variable AP61XG42(15) is 1, and the STEP of the forward control STEP is judged to be 26 (i.e., STEP ═ 26), the STEP of the forward control STEP is set to 27 (i.e., STEP ═ 27). When the sequence control STEP is judged to be 27 (that is, STEP is 27), setting the standby pump 2 to be set to the operation 1 mode flag variable AP6461_ C (35), the operation pump to be set to the standby 1 mode flag variable AP6163_ C (37) and the standby pump 1 to be set to the maintenance mode flag variable AP6365_ C (38) to be 1, that is, setting the standby pump 2 to be in the operation 1 mode state, operating the pump to be set to the standby 1 mode state and setting the standby pump 1 to be in the maintenance mode state;
step 15: when the start completion flag variable QDWC (22) and the backup pump 1 remote/local state flag variable AP63XB03(21) are both 1 and the sequence STEP is determined to be 27 (i.e., STEP is 27), the sequence STEP is set to 0 (i.e., STEP is 0) and the sequence ends.
The module can realize that system's equipment is under one fortune two is equipped with the operating mode, regularly to the equipment key of system operation change operation in turn, avoid single equipment to be in long-time running state, reduce the equipment fault rate, promote the stability of system operation, can accomplish the start-up switching between different equipment automatically in the time of the utmost point weak point, the automatic sign of equipment state, according to the automatic different operational mode of system that sets up of the state of equipment, accomplish the automatic high-efficient operation of system's key switching, very big reduction operating personnel's operation and judgement risk, power plant operation personnel's operating procedure has been simplified, avoid the occurence of failure that the people leads to because of the error.
As shown in the module of fig. 3, the internal standard modules such as and, or, not, SEL, TP are used for realizing the equipment switching operation function under the condition of bus voltage loss under the two-operation one-standby operation working condition, namely, when the power supply bus corresponding to the system operation equipment is in voltage loss, the operation is automatically switched to the normal standby equipment, and the operation state of the system equipment is changed, and the corresponding control signals are judged and output through the internal logic of the special module by connecting the relevant state signals, the mode flag quantity signals and the control signal interfaces of the controlled equipment of the system to the corresponding special module, so as to realize the sequential control requirements of different seasonal working conditions. The design process of the schematic diagram of the two-in-one standby mode inside the SY2_1 module shown in FIG. 6 is as follows:
step 1: when it is judged that all of the system automatic control MODE flag variable AUTO _ MODE (1), the pump 1 operation 1 MODE flag variable XG61(2), the pump 2 operation 2 MODE flag variable XG62(3 '), the pump standby MODE flag variable XG63(3), the system pressure low interlock flag variable YLD (5), the pump 1 operation state flag variable AP61XG41(6 '), and the pump 2 operation state flag variable AP62XG41(7 '), are 1, the manual operation reset button flag variable RES (23) is a pulse of 1 to perform module initialization, the system will enter the two-operation one-standby automatic control MODE, and the compliance available internal variable AM1 is set to 1;
step 2: when the bus bar voltage loss flag variable MXSY (8') is 1 and the sequencing-available internal variable AM1 is judged to be 1 (i.e., AM1 ═ 1), the sequencing STEP is set to 1 (i.e., STEP ═ 1). When the sequence control STEP is judged to be 1 (namely the STEP is equal to 1), clearing the pressure low interlocking signal and the sequence control available internal variable AM1, setting the pressure low interlocking clear flag variable YLD0(25) and the standby valve closing control identification variable AA63XB22(24) to be 1, and controlling to close the standby valve;
and step 3: when the backup valve off state flag variable AA63XB02(10) is 1 and the STEP of the sequencing-available internal variable is judged to be 1 (i.e., STEP ═ 1), the sequencing-STEP is set to 2 (i.e., STEP ═ 2). When the STEP of the sequential control procedure is judged to be 2 (namely, the STEP is 2), setting a standby pump starting control flag variable AP63XB21(27) to be 1, and controlling the standby pump to start;
and 4, step 4: when the backup pump switch state flag variable AP63XB15(11) is 1 and the STEP sequence STEP is determined to be 2 (i.e., STEP ═ 2), the STEP sequence STEP is set to 3 (i.e., STEP ═ 3). When the sequence control STEP is judged to be 3 (namely, the STEP is equal to 3), setting a standby valve opening control flag variable AA63XB21(28) to be 1, and controlling the standby valve to be opened;
and 5: when the standby valve open state flag variable AA63XB01(13) is 1 and the STEP sequence STEP is determined to be 3 (i.e., STEP ═ 3), the STEP sequence STEP is set to 4 (i.e., STEP ═ 4). When the STEP of the sequential control procedure is judged to be 4 (namely, the STEP is 4), setting a control mark variable AP61XB22(30) of the stop operation pump 1 to be 1, and stopping the operation of the stop operation pump 1;
step 6: when both the running pump 1 switch state flag variable AP61XB15(11) and the running pump 1 running state flag variable AP61XG41(6 '), and the running pump 2 running state flag variable AP62XG41 (7'), and the standby pump running state flag variable AP6341(12) are 1, and the forward STEP sequence STEP is judged to be 4 (i.e., STEP is 4), the forward STEP sequence STEP is set to 5 (i.e., STEP is 5). When the sequence control STEP is judged to be 5 (namely, STEP is 5), setting a standby pump operation 1 mode flag variable AP6361_ C (31) and an operation pump 1 maintenance mode flag variable AP6165_ C (39) as 1, setting the standby pump operation 1 mode, and setting the operation pump 1 maintenance mode;
and 7: when the start completion flag variable QDWC (22) is 1 and the sequence STEP is determined to be 5 (i.e., STEP ═ 5), the sequence STEP is set to 0 (i.e., STEP ═ 0), and the sequence flow ends.
The module can realize that system equipment is under two fortune one and is equipped with the operating mode, when the power supply bus that system equipment corresponds when the generating line decompression appears, under the condition that power plant's operator can't directly perceivedly judge corresponding generating line decompression, can accomplish the start-up switching between different equipment in the time of the utmost point weak point, carry out the automatic sign to the equipment state, the automatic operational mode who sets up system place according to the sign state of equipment, make the system keep steady operation under the condition of generating line decompression, accomplish the automatic high-efficient operation of unmanned on duty of system, very big reduction operating personnel's operation and judgement risk, the input of power plant operation supervision dish manpower has been reduced.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (3)

1. A control method for a high-temperature gas cooled reactor plant water system based on a MACS6 platform comprises the steps of switching a module QH1_1 one-operation one-standby one-overhaul mode, a module LH1_2 one-operation two-standby mode and a module SY2_1 two-operation one-standby mode, and is characterized in that: the three modes adopt a specific function module consisting of an AND/OR/NOT gate, an SEL assignment selection component and a TP step component to realize the equipment switching function of working conditions of one-operation one-standby one-overhaul, one-operation two-standby and two-operation one-standby operation, namely when the operation equipment has a fault or/and the system operation pressure is abnormal, the equipment switching operation can be automatically realized, the state of the fault equipment is automatically placed at the overhaul position, and the system operation mode is automatically switched;
the switching module QH1_1 is implemented by adopting the following steps:
step 1: when the system automatic control MODE flag variable AUTO _ MODE, the pump operation MODE flag variable XG61, the pump standby MODE flag variable XG63, the pump overhaul MODE flag variable XG65, the system low pressure interlocking flag variable YLD and the operation pump operation state flag variable XG41 are all judged to be 1, the pulse with the reset button flag variable RES of 1 is manually operated to initialize the module, and the system enters a one-operation one-standby one-overhaul MODE;
step 2: when the electrical fault flag variable AP6143 or the pressure low signal variable YLDK satisfies 1, setting the pressure low interlock clear flag variable YLD0 to 1, and performing pressure low interlock signal clear;
and step 3: if the bus 1 no-voltage mark variable MXSY1 is 0, triggering the interlocking action of the standby pump and the valve, setting the mark variable AA63XB22 of the closed standby valve to be 1, controlling the valve to be closed, and entering the step 4; if the bus 1 voltage loss mark variable MXSY1 and the electrical fault mark variable AP6143 are 1, setting a standby pump maintenance mode mark variable AP6365_ C to be 1, setting the standby pump to be a maintenance mode, and entering the step 9;
and 4, step 4: when the standby valve off state flag variable AA63XB02 is 1, the output of the standby pump starting control flag variable AP63XB21 is 1 so as to start the standby pump;
and 5: when the standby pump switch state flag variable AP63XB15 and the standby pump running state flag variable AP6341 are both 1, the standby valve switch control flag variable AA63XB21 output is 1 to open the standby valve;
step 6: when the standby valve open state flag variable AA63XB01 is 1, the output of the off-running valve control flag variable AA61XB22 is 1 to close the running valve;
and 7: when the run valve off state flag variable AA61XB02 is 1, the shutdown pump control flag variable AP61XB22 output is 1 to shutdown the pump;
and 8: when the running pump switch state flag variable AP61XB15 is 0, outputting the standby pump running mode flag variable AP6361_ C and the running pump maintenance mode flag variable AP6165_ C as 1, setting the standby pump as a running mode, and setting the running pump as a maintenance mode;
and step 9: when the start completion flag variable QDWC is 1, the sequence control flow ends.
2. The control method for the water system of the high-temperature gas-cooled reactor plant based on the MACS6 platform according to claim 1, wherein the control method comprises the following steps: the module SY2_1 is implemented by adopting the following steps:
step 1: when a system automatic control MODE mark variable AUTO _ MODE, a pump 1 operation 1 MODE mark variable XG61, a pump 2 operation 2 MODE mark variable XG62, a pump standby MODE mark variable XG63, a system pressure low interlocking mark variable YLD, an operation state mark variable AP6141 of the operation pump 1 and an operation state mark variable AP6241 of the operation pump 2 are all judged to be 1, a pulse with a reset button mark variable RES of 1 is manually operated to carry out module initialization, and the system enters a two-operation one-standby automatic control MODE;
step 2: when the bus voltage loss flag variable MXSY is 1, setting the pressure low interlocking clear flag variable YLD0 and the standby valve closing control flag variable AA63XB22 to be 1, clearing the pressure low interlocking signal and controlling to close the standby valve;
and step 3: when the standby valve off state flag variable AA63XB02 is 1, setting the standby pump starting control flag variable AP63XB21 to 1, and controlling the standby pump to start;
and 4, step 4: when the standby pump switch state flag variable AP63XB15 is 1, setting the standby valve switch control flag variable AA63XB21 to 1, and controlling the standby valve to be switched on;
and 5: when the standby valve open state flag variable AA63XB01 is 1, setting the control flag variable AP61XB22 of the stop operation pump 1 to 1, and stopping the operation of the operation pump 1;
step 6: when the operating pump 1 switch state flag variable AP61XB15 and the operating pump 1 operating state flag variable AP6141 are both 0, and the operating pump 2 operating state flag variable AP6241 and the standby pump operating state flag variable AP6341 are both 1, setting the standby pump operation 1 mode flag variable AP6361_ C and the operating pump 1 maintenance mode flag variable AP6365_ C to 1, setting the standby pump to operation 1 mode, and setting the operating pump 1 to maintenance mode;
and 7: when the start completion flag variable QDWC is 1, the sequence flow ends.
3. The control method for the water system of the high-temperature gas-cooled reactor plant based on the MACS6 platform according to claim 1, wherein the control method comprises the following steps: the module LH1_2 one-operation-two-standby mode is realized by adopting the following steps:
step 1: when the system automatic control MODE flag variable AUTO _ MODE, the pump running 1 MODE flag variable XG61, the pump 1 standby 1 MODE flag variable XG63, the pump 2 standby 2 MODE flag variable XG64, the system pressure low interlocking flag variable YLD and the running pump running state flag variable XG41 are all judged to be 1, the pulse with the reset button flag variable RES of 1 is manually operated to carry out module initialization, and the system enters a one-running two-standby automatic control MODE;
step 2: when the start rotation control signal flag variable QDLH is 1, the pressure low interlock clear flag variable YLD0 is set to 1, and the pressure low interlock signal is cleared;
and step 3: when the busbar 1 no-voltage mark variable MXSY1 is 0, setting the mark variable AA63XB22 for closing the standby valve 1 to be 1, closing the standby valve 1, and entering the step 4; when the busbar 1 no-voltage marking variable MXSY1 is 1 and the busbar 2 no-voltage marking variable MXSY2 is 0, setting the mark variable AA64XB22 of the closing standby valve 2 to be 1, closing the standby valve 2, and entering the step 10;
and 4, step 4: when the off-state flag variable AA63XB02 of the backup valve 1 is 1, setting the starting control flag variable AP63XB21 of the backup pump 1 to 1, and starting the backup pump 1;
and 5: when the standby pump 1 switch state flag variable AP63XB15 and the standby pump 1 running state flag variable AP6341 are both 1, setting the standby valve 1 switch control flag variable AA63XB21 to 1, and controlling the standby valve 1 to be switched on;
step 6: when the standby valve 1 is in the opening state flag variable AA63XB01 is 1, setting the operating valve closing control flag variable AA61XB22 to be 1, and controlling the operating valve to be closed;
and 7: when the running valve off state flag variable AA61XB02 is 1, setting the shutdown pump control flag variable AP61XB22 to 1, and controlling the running pump to be shutdown;
and 8: when the running pump switch state flag variable AP61XB15 is 0 and the running pump shutdown state flag variable AP61XG42 is 1, setting all of the standby pump 2 standby 1-mode flag variable AP6463_ C, the standby pump 1 standby running 1-mode flag variable AP6361_ C, and the running pump standby 2-mode flag variable AP6164_ C to 1, that is, setting the standby pump 2 to standby 1-mode state, setting the standby pump 1 to running 1-mode state, and running the pump standby 2-mode state;
and step 9: when the start completion flag variable QDWC is 1, the sequence control flow is ended;
step 10: when the off-state flag variable AA64XB02 of the standby valve 2 is 1, setting the starting control flag variable AP64XB21 of the standby pump 2 to 1, and starting the standby pump 2;
step 11: when the standby pump 2 switch state flag variable AP64XB15 and the standby pump 2 running state flag variable AP6441 are both 1, setting the standby valve 2 switch control flag variable AA64XB21 to 1, and controlling the standby valve 2 to switch on;
step 12: when the standby valve 2 is in the opening state flag variable AA64XB01 is 1, setting the operating valve closing control flag variable AA61XB22 to be 1, and controlling the operating valve to be closed;
step 13: when the running valve off state flag variable AA61XB02 is 1, setting the shutdown pump control flag variable AP61XB22 to 1, and controlling the running pump to be shutdown;
step 14: when the running pump switch state flag variable AP61XB15 is 0 and the running pump shutdown state flag variable AP61XG42 is 1, setting the running 1 mode flag variable AP6461_ C for the backup pump 2, the running pump standby 1 mode flag variable AP6163_ C, and the maintenance mode flag variable AP6365_ C for the backup pump 1 as 1, that is, setting the running 1 mode state for the backup pump 2, the running 1 mode state for the running pump, and the maintenance mode state for the backup pump 1;
step 15: when both the startup complete flag variable QDWC and the backup pump 1 remote/local status flag variable AP63XB03 are 1, the sequence ends.
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