CN213517922U - 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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- CN213517922U CN213517922U CN202021235112.2U CN202021235112U CN213517922U CN 213517922 U CN213517922 U CN 213517922U CN 202021235112 U CN202021235112 U CN 202021235112U CN 213517922 U CN213517922 U CN 213517922U
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Abstract
The utility model belongs to the technical field of the control system of nuclear power plant, concretely relates to deal with monocycle network structure of two breakpoints of nuclear power plant control system communication. The utility model comprises a main ring, a sub-ring, an ascending 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 utility model discloses a configuration strategy of innovation, rational distribution treater connected node has optimized nuclear power plant control system's monocyclic network structure, ensures that communication transmission is not influenced under the double break point trouble, promotes control system's reliability.
Description
Technical Field
The utility model belongs to the technical field of the control system of nuclear power plant, concretely relates to deal with monocycle network structure of two breakpoints of nuclear power plant control system communication.
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.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: the utility model provides a reply monocycle network structure of two breakpoints of nuclear power plant control system communication adopts the configuration strategy of innovation, and rational distribution treater connected node has optimized nuclear power plant control system's monocycle network structure, ensures that communication transmission is not influenced under the two breakpoints trouble, promotes control system's reliability.
The utility model adopts the technical proposal that:
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 beneficial effects of the utility model reside in that:
(1) the utility model provides a single ring network structure for coping with the double communication breakpoints of the control system of the nuclear power plant, which improves the reliability of the single ring network operation of the control system by adjusting the connection nodes of the sub-ring processor and avoids the unplanned operation event caused by the fault of the double breakpoints of the sub-ring;
(2) the utility model provides a single ring network structure for coping with double communication breakpoints of a control system of a nuclear power plant, which improves the fault tolerance of a sub-ring by optimizing and adjusting the position of a processor;
(3) the utility model 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 optimizing the configuration of the processors;
(4) the utility model 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 utility model provides a single ring network structure for coping with double communication breakpoints of a nuclear power plant control system, which does not change the main structure of the original network and has the advantage of easy implementation;
(6) the utility model provides a reply monocycle network structure of two breakpoints of control system communication of nuclear power plant under the condition that need not increase extra equipment, has improved control system monocycle network's reliability by a wide margin, has advantages such as with low costs, the reliability is high and easy to implement, and technical method such as this network structure's design thinking, implementation scheme have the reference meaning to the design and the transformation of the control of connecting redundant user's control system monocycle network structure.
Drawings
FIG. 1: the utility model provides a single-ring network structure schematic diagram for coping 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 the single-ring network structure for handling the double communication breakpoints of the control system of the nuclear power plant in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the utility model provides a pair of single ring network structure of two breakpoints of response nuclear power plant control system communication, including main ring 1, sub ring 2, sub ring A side semi-ring 201, sub ring B side semi-ring 202, go upward switch A3, go upward switch B4, automatic processing rack 5, automatic processing rack treater A6, automatic processing rack treater B7, automatic processing rack treater and sub ring A side semi-ring connected node 701, automatic processing rack treater and sub ring B side semi-ring connected 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 the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution of the present invention and the inventive concept thereof equally within the technical scope disclosed in the present invention, and all the modifications should be covered within the protection scope of the present invention.
Claims (5)
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 connecting node (701) and the sub-ring A side half ring (201) through the automatic processing cabinet processor, and the automatic processing cabinet processor B (7) is connected with the sub-ring B side half ring connecting node (702) and the sub-ring B side half ring (202) through the automatic processing cabinet processor.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111694270A (en) * | 2020-06-29 | 2020-09-22 | 江苏核电有限公司 | Single-ring network structure for handling communication double breakpoints of control system of nuclear power plant |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111694270A (en) * | 2020-06-29 | 2020-09-22 | 江苏核电有限公司 | Single-ring network structure for handling communication double breakpoints of control system of nuclear power plant |
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