CN111694270A - Single-ring network structure for handling communication double breakpoints of control system of nuclear power plant - Google Patents
Single-ring network structure for handling communication double breakpoints of control system of nuclear power plant Download PDFInfo
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- CN111694270A CN111694270A CN202010608617.7A CN202010608617A CN111694270A CN 111694270 A CN111694270 A CN 111694270A CN 202010608617 A CN202010608617 A CN 202010608617A CN 111694270 A CN111694270 A CN 111694270A
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- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
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Abstract
The invention belongs to the technical field of control systems of nuclear power plants, and particularly relates to a single-ring network structure for coping with double communication breakpoints of a control system of a nuclear power plant. The invention comprises a main ring, a sub-ring, an uplink exchanger, an automatic processing cabinet and an automatic processing cabinet processor; the sub-ring and the main ring communicate through an uplink switch; a plurality of automatic processing cabinets are connected below the subring, and automatic processing cabinet processors are arranged in the automatic processing cabinets; the uplink switch comprises an uplink switch A and an uplink switch B, and the uplink switch A and the uplink switch B are redundant with each other; meanwhile, the two uplink switches divide the sub-ring into a sub-ring A side half ring and a sub-ring B side half ring. The invention adopts an innovative configuration strategy, reasonably distributes the connection nodes of the processors, optimizes the single-ring network structure of the control system of the nuclear power plant, ensures that communication transmission is not influenced under the double-breakpoint fault and improves the reliability of the control system.
Description
Technical Field
The invention belongs to the technical field of control systems of nuclear power plants, and particularly relates to a single-ring network structure for coping with double communication breakpoints of a control system of a nuclear power plant.
Background
The advanced digital control system brings remarkable safety, economic and management benefits to the operation of the nuclear power station, and simultaneously, puts higher requirements on the operation reliability of an industrial network system. The communication of the control system of the gulf nuclear power station adopts a single-ring network structure and consists of 6 sub-rings and 1 main ring.
The sub-ring is connected with the main ring through an uplink exchanger A and an uplink exchanger B, and the uplink exchanger A and the uplink exchanger B are redundant mutually. The up exchanger B in standby state monitors the working state of the up exchanger A at the main side in real time, and when the up exchanger A is disconnected with the main ring, the up link switching is automatically executed, so as to achieve the purpose of redundancy standby.
A plurality of automatic processing cabinets are connected in each sub-ring, local data are collected by the automatic processing cabinets through hard wiring, and the local data are transmitted to other automatic processing cabinets and operator stations through a single-ring network of the control system to be operated and displayed after logical operation of the processor; meanwhile, commands sent by the operator station are also transmitted to the automatic processing cabinet through the single-ring network of the control system, and are transmitted to the actuator to execute the operation after being processed. The automatic processing cabinet processors adopt redundancy configuration, and the processor A and the processor B synchronously receive data, and synchronously calculate and process the data and mutually perform redundancy hot standby. One of the processors is used as an output processing result of the main processor, and when the main processor fails, the main processor can be automatically switched to the redundant standby processor to continue to operate undisturbed.
Based on the redundant configuration of the processor and the uplink, the control system single-loop network can allow a single breakpoint to occur in the ring network, and in this case, network communication is not affected. However, if a double breakpoint occurs in the sub-ring, the communication of the automatic processing cabinet within the range of the double breakpoint may be interrupted, and the operator on duty cannot monitor the devices and signals in the automatic processing cabinet within the range of the communication fault. And because the communication between the automatic processing cabinet in the double-breakpoint fault range and other automatic processing cabinets is interrupted, the condition of misoperation of important process equipment can be caused, the normal operation of the unit is further influenced, and even an unplanned shutdown event of the unit is caused.
The single-ring network subring of the current control system cannot cope with communication double-breakpoint faults, the reliability of the single-ring network subring is weak, and the requirement of the nuclear power plant control system on the network reliability cannot be met.
Disclosure of Invention
The invention aims to: the invention provides a single-ring network structure for coping with double communication breakpoints of a control system of a nuclear power plant, which adopts an innovative configuration strategy to reasonably distribute processor connecting nodes, optimizes the single-ring network structure of the control system of the nuclear power plant, ensures that communication transmission is not influenced under the fault of the double breakpoints, and improves the reliability of the control system.
The technical scheme adopted by the invention is as follows:
a single-ring network structure for coping with double communication breakpoints of a control system of a nuclear power plant comprises a main ring, a sub-ring, an uplink switch, an automatic processing cabinet and an automatic processing cabinet processor; the sub-ring and the main ring communicate through an uplink switch; and a plurality of automatic processing cabinets are connected below the subring, and automatic processing cabinet processors are arranged in the automatic processing cabinets.
The uplink switch comprises an uplink switch A and an uplink switch B, and the uplink switch A and the uplink switch B are redundant mutually.
The uplink exchanger A and the uplink exchanger B are respectively connected with the main ring and the sub-ring, and the sub-ring is divided into a sub-ring A side semi-ring and a sub-ring B side semi-ring by the two uplink exchangers.
The automatic processing cabinet processor comprises an automatic processing cabinet processor A and an automatic processing cabinet processor B, and the automatic processing cabinet processor A and the automatic processing cabinet processor B are mutually redundant and stand-by.
All automatic processing cabinet processors A in the subring are distributed in the semiring A side semiring, and all automatic processing cabinet processors B are distributed in the semiring B side semiring; the automatic processing cabinet processor A is connected with the semi-ring at the side of the sub-ring A through the sub-ring connecting node, and the automatic processing cabinet processor B is connected with the semi-ring at the side of the sub-ring B through the sub-ring connecting node.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention provides a single-ring network structure for coping with double communication breakpoints of a control system of a nuclear power plant, which improves the reliability of the operation of the single-ring network of the control system by adjusting the connection nodes of a subring processor, and avoids an unplanned operation event caused by the fault of the double breakpoints of the subring;
(2) the invention provides a single-ring network structure for handling double communication breakpoints of a control system of a nuclear power plant, which improves the fault tolerance of a sub-ring by optimally adjusting the position of a processor;
(3) the invention provides a single-ring network structure for coping with double communication breakpoints of a control system of a nuclear power plant, which improves the efficiency of data transmission between processors by optimally configuring the processors;
(4) the invention provides a single-ring network structure for coping with double communication breakpoints of a control system of a nuclear power plant, which does not need to additionally increase equipment and has high economic applicability;
(5) the invention provides a single-ring network structure for coping with double communication breakpoints of a control system of a nuclear power plant, which does not change the main structure of the original network and has the advantage of easy implementation;
(6) the invention provides a single-ring network structure for coping with double communication breakpoints of a control system of a nuclear power plant, which greatly improves the reliability of the single-ring network of the control system without adding extra equipment and has the advantages of low cost, high reliability, easy implementation and the like.
Drawings
FIG. 1: the invention provides a single-ring network structure schematic diagram for dealing with double communication breakpoints of a nuclear power plant control system;
in the figure: 1-main ring; 2-subring; 201-sub-ring a side half ring (solid line); 202-sub-ring B side half ring (dashed line); 3-uplink switch a; 4-uplink switch B; 5, automatically processing the cabinet; 6-automatic processing cabinet processor A; 7-automatic processing cabinet processor B; 701, connecting a node between an automatic processing cabinet processor and a semi-ring at the side A of a sub-ring; and 702, connecting the automatic processing cabinet processor with the half ring on the B side of the subring.
Detailed Description
The following describes a single-loop network structure for handling dual communication breakpoints of a nuclear power plant control system in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the single ring network structure for handling dual communication breakpoints of a nuclear power plant control system provided by the present invention includes a main ring 1, a sub ring 2, a sub ring a side half ring 201, a sub ring B side half ring 202, an uplink switch A3, an uplink switch B4, an automatic processing cabinet 5, an automatic processing cabinet processor a6, an automatic processing cabinet processor B7, an automatic processing cabinet processor and sub ring a side half ring connection node 701, and an automatic processing cabinet processor and sub ring B side half ring connection node 702.
The sub-ring 2 communicates with the main ring 1 through an uplink switch; the sub-ring 2 is connected with the main ring 1 through an uplink switch A3 and an uplink switch B4, and the uplink switch A3 and the uplink switch B4 are redundant; the uplink exchanger A3 and the uplink exchanger B4 are respectively connected with the main ring 1 and the sub ring 2, and the sub ring 2 is divided into a sub ring A side half ring 201 and a sub ring B side half ring 202 by the two uplink exchangers;
a plurality of automatic processing cabinets 5 are connected below the subring 2, the processors in the automatic processing cabinets are in redundant configuration, and the automatic processing cabinet processor A6 and the automatic processing cabinet processor B7 are redundant and spare;
all of the automated processing cabinet processors A6 in sub-ring 2 are assigned to sub-ring A side half loop 201 and all of the automated processing cabinet processors B7 are assigned to sub-ring B side half loop 202; the automated processing cabinet processor a6 is connected to the sub-ring a side half ring 201 through the sub-ring connection node 701, and the automated processing cabinet processor B7 is connected to the sub-ring B side half ring 202 through the sub-ring connection node 702.
When a double break occurs in the sub-ring a side half ring 201, in an extreme case, all the automated processing cabinet processors a6 connected to the sub-ring a side half ring 201 are offline, but since the sub-ring B side half ring 202 is connected to the automated processing cabinet processor B7, the respective automated processing cabinets can still realize communication between the cabinets in the sub-ring and with the main ring 1 through the uplink, so that the function of the automated processing cabinet 5 is not affected;
when a double break occurs in the B-side half ring 202 of the sub-ring, in an extreme case, all the automated processing cabinet processors B7 connected to the B-side half ring 202 of the sub-ring are offline, but since the automated processing cabinet processor a6 is mounted on the sub-ring a-side half ring 201, the individual automated processing cabinets 5 can still realize communication between the cabinets in the sub-ring and with the main ring 1 through an uplink, so that the function of the automated processing cabinets 5 is not affected;
when double breakpoints respectively appear in the side a half ring 201 of the sub-ring and the side B half ring 202 of the sub-ring, that is, 1 breakpoint appears in the side a half ring 201 of the sub-ring and 1 breakpoint appears in the side B half ring 202 of the sub-ring, at this time, the sub-ring 2 is divided into 2 segments of independent buses, one segment of the bus communicates with the main ring 1 through the uplink a, the other segment communicates with the main ring 1 through the uplink B, and all the automatic processing cabinets 5 in the sub-ring 2 have a processor to be kept on line, so that the functions of the automatic processing cabinets 5 are not affected.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the technical scope of the present invention.
Claims (8)
1. The utility model provides a single loop network structure of two breakpoints of reply nuclear power plant control system communication which characterized in that: the system comprises a main ring (1), a sub-ring (2), an uplink switch, an automatic processing cabinet (5) and an automatic processing cabinet processor; the sub-ring (2) communicates with the main ring (1) through an uplink switch; a plurality of automatic processing cabinets (5) are connected below the sub-ring (2), and automatic processing cabinet processors are arranged in the automatic processing cabinets (5).
2. The single-ring network structure for handling the double communication breakpoints of the nuclear power plant control system according to claim 1, wherein: the uplink switch comprises an uplink switch A (3) and an uplink switch B (4), and the uplink switch A (3) and the uplink switch B (4) are redundant with each other.
3. The single-ring network structure for handling the double communication breakpoints of the nuclear power plant control system according to claim 2, wherein: the uplink exchanger A (3) and the uplink exchanger B (4) are respectively connected with the main ring (1) and the sub-ring (2), and the sub-ring (2) is divided into a sub-ring A side half ring (201) and a sub-ring B side half ring (202) by the two uplink exchangers.
4. The single-ring network structure for handling the double communication breakpoints of the nuclear power plant control system according to claim 3, wherein: the automatic processing cabinet processor comprises an automatic processing cabinet processor A (6) and an automatic processing cabinet processor B (7), and the automatic processing cabinet processor A (6) and the automatic processing cabinet processor B (7) are mutually redundant and standby.
5. The single-ring network structure for handling the double communication breakpoints of the nuclear power plant control system according to claim 4, wherein: all the automatic processing cabinet processors A (6) in the subring (2) are distributed to a subring A side half ring (201), and all the automatic processing cabinet processors B (7) are distributed to a subring B side half ring (202); the automatic processing cabinet processor A (6) is connected with the sub-ring A side half ring (201) through a sub-ring connecting node (701), and the automatic processing cabinet processor B (7) is connected with the sub-ring B side half ring (202) through a sub-ring connecting node (702).
6. The single-ring network structure for handling the double communication breakpoints of the nuclear power plant control system according to claim 5, wherein: when double break points occur in the sub-ring A side half ring (201), all the automatic processing cabinet processors A (6) connected with the sub-ring A side half ring (201) are offline in an extreme case, but because the B side half ring (202) of the sub-ring is connected with the automatic processing cabinet processor B (7), the automatic processing cabinets still realize communication among all the cabinets in the sub-ring and communicate with the main ring (1) through an uplink, and the functions of the automatic processing cabinets (5) are not influenced.
7. The single-ring network structure for handling the double communication breakpoints of the nuclear power plant control system according to claim 5, wherein: when double break points appear in the B side half ring (202) of the subring, all the automatic processing cabinet processors B (7) connected with the B side half ring (202) of the subring are offline in an extreme case, but because the automatic processing cabinet processors A (6) are mounted on the A side half ring (201) of the subring, the respective automatic processing cabinets (5) still realize communication among the cabinets in the subring and communication with the main ring (1) through an uplink, and the functions of the automatic processing cabinets (5) are not influenced.
8. The single-ring network structure for handling the double communication breakpoints of the nuclear power plant control system according to claim 5, wherein: when double breakpoints respectively appear on the A side half ring (201) of the sub-ring and the B side half ring (202) of the sub-ring, namely 1 breakpoint appears on the A side half ring (201) of the sub-ring and 1 breakpoint appears on the B side half ring (202) of the sub-ring, at the moment, the sub-ring 2 is divided into 2 sections of independent buses, one section of the bus is communicated with the main ring (1) through an uplink A, the other section of the bus is communicated with the main ring (1) through an uplink B, all automatic processing cabinets (5) in the sub-ring (2) are kept on line by one processor, and the functions of the automatic processing cabinets (5) are not influenced.
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2020
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