Double-loop network control system and power system

Abstract

The utility model provides a double loop network control system and an electric power system, and relates to the field of looped network communication, the control system comprises a master control node comprising a master controller and a local input / output module, and the master controller is provided with a first-class network port and a second-class network port; wherein the type of the first-class network port is different from that of the second-class network port; at least one remote communication substation node; each remote communication substation node comprises a remote communication substation module and a remote input / output module which are communicated with each other; the remote communication substation module is provided with a first-class network port and a second-class network port; the main controller and the remote communication substation module are sequentially connected in series through respective first-class network ports to form a first looped network; and the main controller and the remote communication substation module are sequentially connected in series through respective second-class network ports to form a second looped network. According to the control system provided by the utility model, normal communication of the system can be realized under the condition that the system fails, the anti-interference capability of the system is improved, and stable operation of the communication system is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of ring network communication, in particular to a double ring network control system and a power system. Background Art

[0002] Ring network communication is a communication network that uses a continuous ring to connect the main control node with multiple remote communication substation nodes. The main controller controls the information sending and receiving of multiple remote communication substation nodes. It is widely used in industrial control fields such as power, coal mining, and chemical industry.

[0003] In the prior art, a single-ring network model is usually used to connect the main control node and multiple remote communication substation nodes set on the equipment in series in the communication network. However, the anti-interference ability of the single-ring network model can only withstand one-level network failure at most. When two or more communication failures occur in the ring network, some nodes in the ring network and the remote input / output modules hanging below will completely lose communication with the main control node and will no longer be controlled. The control system has poor stability, which brings huge economic losses to production. Utility Model Content

[0004] In view of the technical problem of poor stability of the control system in the prior art, the utility model provides a dual-loop network control system and a communication control method for the dual-loop network control system. By adopting the dual-loop network control system, normal communication of the system can be achieved in the event of a system failure, the anti-interference ability of the system can be improved, and the stable operation of the communication system can be ensured.

[0005] To achieve the above-mentioned purpose, the first aspect of the utility model provides a dual-ring network control system, which includes: a master control node, including a main controller and a local input / output module, the local input / output module forms a communication connection with the main controller; the main controller has a class I network port and a class II network port; wherein the class I network port and the class II network port have different network port types; a plurality of remote communication substation nodes, each of which has a class I network port and a class II network port; the main controller and the remote communication substation nodes are used as communication nodes, and are connected in series in sequence through their respective class I network ports to form a first ring network, and are connected in series in sequence through their respective class II network ports to form a second ring network; the first ring network and the second ring network can form a cross-ring network through communication nodes.

[0006] Furthermore, the master control node further includes: a sub-controller, the sub-controller having a first-class network port and a second-class network port, and being connected in series to the first ring network and the second ring network respectively through the first-class network port and the second-class network port;

[0007] The main controller is also used to: generate first information in a normal working state; send the first information to the sub-controller through the first ring network and the second ring network respectively; and receive second information forwarded from the sub-controller through the first ring network and the second ring network respectively to realize information interaction; send local request information to the local input / output module, and receive local device information fed back by the local input / output module based on the local request information; wherein the second information is generated by the remote communication substation node based on the first information forwarded from the sub-controller;

[0008] The sub-controller is used to: forward the first information received from the main controller to the remote communication sub-station node through the first ring network and the second ring network respectively; forward the second information received from the remote communication sub-station node to the main controller through the first ring network and the second ring network respectively; the sub-controller is also used to: when it is determined that the main controller is in a fault state, generate the first information, and send the first information to the remote communication sub-station node through the first ring network and the second ring network respectively; and receive the second information forwarded from the remote communication sub-station node through the first ring network and the second ring network respectively, so as to realize information interaction;

[0009] The remote communication substation node is also used to: generate second information based on the first information sent from the sub-controller; and forward the second information to the sub-controller through the first ring network and the second ring network respectively.

[0010] Furthermore, the remote communication substation node includes a remote communication substation module and a remote input / output module that are interconnected, and a Class I network port and a Class II network port are configured on the remote communication substation module of the remote communication substation node; the remote communication substation module of the remote communication substation node is used to: forward the first information sent from the sub-controller to the remote input / output module of the remote communication substation node; forward the second information sent from the remote input / output module of the remote communication substation node to the sub-controller through the first ring network and the second ring network respectively; the remote input / output module of the remote communication substation node is used to: generate second information based on the first information forwarded from the remote communication substation module of the remote communication substation node, and forward the second information to the remote communication substation module of the remote communication substation node.

[0011] Furthermore, the remote communication substation node and the remote input / output module are mounted on a base plate of the remote communication substation node and are interconnected via an internal bus arranged on the base plate.

[0012] Furthermore, the internal bus is a serial communication bus.

[0013] Furthermore, a remote communication substation node includes a plurality of remote input / output modules.

[0014] Furthermore, the communication node also includes a sub-controller.

[0015] Furthermore, the sub-controller is connected to the local input / output module via a serial communication bus. The sub-controller is also used to generate local request information when it is determined that the main controller is in a fault state, and receive feedback local device information from the local input / output module based on the local request information.

[0016] Furthermore, the first type of network port is a fiber optic network port, and the second type of network port is an Ethernet port.

[0017] A second aspect of the utility model provides an electric power system, which includes the dual-loop network control system described above.

[0018] Through the technical solution provided by the utility model, the utility model has at least the following technical effects:

[0019] The dual-ring network control system of the utility model comprises: a main control node and at least one remote communication substation node, the main control node comprises a main controller and a local input / output module, the local input / output module forms a communication connection with the main controller; the main controller has a first-class network port and a second-class network port. Each remote communication substation node comprises a remote communication substation module and a remote input / output module that are interconnected, and the remote communication substation module has a first-class network port and a second-class network port. The main controller and at least one remote communication substation module are connected in series in sequence through their respective first-class network ports to form a first ring network; the main controller and at least one remote communication substation module are connected in series in sequence through their respective second-class network ports to form a second ring network. The main controller simultaneously sends the first information to the remote communication substation module through the first ring network and the second ring network, the remote communication substation module forwards the first information to the remote input / output module, the remote input / output module generates the second information based on the first information, and then feeds the second information back to the remote communication substation module, the remote communication substation module then forwards the second information back to the main controller through the first ring network and the second ring network, and the main controller processes the second information. The dual-loop network control system provided by the utility model can realize normal communication of the system in the event of a system failure, improve the anti-interference capability of the system, and ensure the stable operation of the communication system.

[0020] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the embodiments of the present utility model and constitute a part of the specification. Together with the following specific implementations, they are used to explain the embodiments of the present utility model, but do not constitute a limitation on the embodiments of the present utility model. In the accompanying drawings:

[0022] Figure 1A schematic diagram of a dual-loop network control system provided by an embodiment of the utility model;

[0023] Figure 2 A schematic diagram of another dual-loop network control system provided in an embodiment of the utility model.

[0024] Description of Reference Numerals

[0025] 100-main control node; 200-first remote communication substation node; 300-second remote communication substation node; 400-Nth remote communication substation node; 500-class I network port; 600-class II network port; 700-first ring network; 800-second ring network; 110-main controller; 120-sub-controller; 130-local input / output module; 210-first remote communication substation module; 220-first remote input / output module; 230-first substation baseboard. DETAILED DESCRIPTION

[0026] The specific implementation of the embodiment of the utility model is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the embodiment of the utility model, and is not used to limit the embodiment of the utility model.

[0027] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0028] In the present invention, unless otherwise specified, directional words such as "up, down, top, bottom" are usually used with reference to the directions shown in the drawings or are used to describe the relative positional relationships of components in the vertical, perpendicular or gravity direction.

[0029] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0030] Please refer to Figure 1 and Figure 2The embodiment of the utility model provides a dual-ring network control system, which includes: a master control node 100, including a main controller 110 and a local input / output module 130, the local input / output module 130 forms a communication connection with the main controller 110; the main controller 110 has a first-class network port 500 and a second-class network port 600; wherein the first-class network port 500 and the second-class network port 600 are of different network port types; a plurality of remote communication substation nodes, each of which has a first-class network port 500 and a second-class network port 600; the main controller 110 and the remote communication substation nodes are used as communication nodes, and are connected in series in sequence through their respective first-class network ports 500 to form a first ring network 700, and are connected in series in sequence through their respective second-class network ports 600 to form a second ring network 800; the first ring network 700 and the second ring network 800 can form a cross-ring network through communication nodes.

[0031] Specifically, in the embodiment of the utility model, the dual-ring network control system includes a master control node 100 and at least one remote communication substation node, the master control node 100 includes a main controller 110 and a local input / output module 130, and the local input / output module 130 is connected to the main controller 110 through a serial communication bus. The main controller 110 has at least two first-class network ports 500 and a second-class network port 600. The main controller 110 and the remote communication substation node are sequentially connected in series through their respective first-class network ports 500 as communication nodes to form a first ring network 700; the main controller 110 and the remote communication substation node are sequentially connected in series through their respective second-class network ports 600 to form a second ring network 800. The main controller 110 simultaneously sends the first information to the remote communication substation node through the first ring network 700 and the second ring network 800, and the remote communication substation node generates the second information based on the first information, and then forwards the second information back to the main controller 110 through the first ring network 700 and the second ring network 800, and the main controller 110 processes the second information.

[0032] Further, in the case of a failure in one of the ring networks, the main controller can send and receive information through another ring network to ensure stable communication in the ring network. Further, the first ring network 700 and the second ring network 800 can form a cross ring network through communication nodes. When a section of one of the ring networks fails (including a failure of any of the two network ports or a communication link between the two network ports), the rest continue to use the ring network, and the section with the failure communicates through another ring network. For example, if the first ring network communication link between the main controller 110 and the adjacent remote communication substation node fails, the main controller 110 can first communicate with the adjacent remote communication substation node through the second ring network, and the adjacent remote communication substation node continues to communicate with the next remote communication substation node through the first ring network. For another example, if the first ring network communication link between any two adjacent remote communication substation nodes fails, the previous remote communication substation node can be controlled to communicate with the next remote communication substation node through the second ring network, and the next remote communication substation node can be controlled to continue to communicate with the following remote communication substation node through the first ring network.

[0033] The dual-loop network control system provided by the utility model can realize normal communication of the system in the event of a system failure, improve the anti-interference capability of the system, and ensure the stable operation of the communication system.

[0034] Furthermore, the first type network port 500 is a fiber optic network port, and the second type network port 600 is an Ethernet port.

[0035] In this embodiment, the first class network port 500 is a fiber network port, and the second class network port 600 is an Ethernet port. Long-distance communication is mainly based on fiber communication, and short-distance communication is mainly based on Ethernet communication. The first class network port and the second class network port can also be communication network ports such as Bluetooth network ports or microwave network ports. Those skilled in the art can set the types of the first class network port and the second class network port according to actual conditions.

[0036] Furthermore, the master control node further includes: a sub-controller 120, the sub-controller 120 having a first-class network port 500 and a second-class network port 600, and connected in series to the first ring network 700 and the second ring network 800 through the first-class network port 500 and the second-class network port 600 respectively;

[0037] The main controller 110 is also used to: generate first information in a normal working state; send the first information to the sub-controller 120 through the first ring network 700 and the second ring network 800 respectively; and receive the second information forwarded from the sub-controller 120 through the first ring network 700 and the second ring network 800 respectively to realize information interaction; send local request information to the local input / output module 130, and receive local device information fed back by the local input / output module 130 based on the local request information; wherein the second information is generated by the remote communication substation node based on the first information forwarded from the sub-controller 120;

[0038] The sub-controller 120 is used to: forward the first information received from the main controller 110 to the remote communication sub-station node through the first ring network 700 and the second ring network 800 respectively; forward the second information received from the remote communication sub-station node to the main controller 110 through the first ring network 700 and the second ring network 800 respectively; the sub-controller 120 is also used to: when it is determined that the main controller 110 is in a fault state, generate the first information, and send the first information to the remote communication sub-station node through the first ring network 700 and the second ring network 800 respectively; and receive the second information forwarded from the remote communication sub-station node through the first ring network 700 and the second ring network 800 respectively, so as to realize information interaction;

[0039] The remote communication substation node is also used to: generate second information based on the first information sent from the sub-controller 120; and forward the second information to the sub-controller 120 through the first ring network 700 and the second ring network 800 respectively.

[0040] Specifically, in the embodiment of the utility model, the main control node further includes a sub-controller 120 and a baseboard, and the main controller 110 and the sub-controller 120 are arranged on the baseboard. The sub-controller 120 has at least two first-class network ports 500 and a second-class network port 600, such as Figure 2 As shown, the main controller 110 and the sub-controller 120 are connected in series with the remote communication substation node through their respective class I network ports 500 to form a first ring network 700; the main controller 110 and the sub-controller 120 are connected in series with the remote communication substation node through their respective class II network ports 600 to form a second ring network 800.

[0041] The sub-controller 120 can form a redundant network with the main controller 110. Under normal circumstances, the sub-controller 120 only forwards information and does not process information. When the main controller 110 fails, the sub-controller 120 can replace the function of the main controller 110.

[0042] In this embodiment, the sub-controller 120 is disposed between the main controller 110 and the Nth remote communication substation node 400. The main controller 110 can send and receive information via the first remote communication substation node 200, or can send and receive information via the sub-controller 120 and the Nth remote communication substation node 400. An intermediate point can be set according to the communication protocol, such as the communication link between the first remote communication substation node 200 and the second remote communication substation node 300 as the intermediate point.

[0043] Take the example of the main controller 110 sending the first information to the second remote communication substation node 300. Under normal circumstances, the main controller 110 sends the first information to the sub-controller 120 through the first ring network 700 and the second ring network 800 at the same time, and passes through the sub-controller 120 and multiple remote communication substation nodes in the first ring network 700 and the second ring network 800 in turn, and is forwarded to the second remote communication substation node 300. The second remote communication substation node 300 generates the second information based on the first information, and forwards the second information to the sub-controller 120 through the first ring network 700 and the second ring network 800 respectively. The sub-controller 120 then feeds the second information back to the main controller 110 through the serial communication bus, and the main controller 110 processes the second information. The sub-controller 120 is at the same level as the remote communication substation node, and the main controller 110 can also send the first information directly to the remote communication substation node without passing through the sub-controller 120.

[0044] In the event of a failure of the main controller 110, the sub-controller 120 generates first information, and simultaneously sends the first information to the second remote communication substation node through the first ring network 700 and the second ring network 800. The second remote communication substation node generates second information based on the first information, and forwards the second information to the sub-controller 120 through the first ring network 700 and the second ring network 800, respectively. The sub-controller 120 processes the second information.

[0045] The main controller 110 is connected to the local input / output module 130 via a serial communication bus. The main controller 110 is used to send local request information to the local input / output module 130 and receive local device information fed back by the local input / output module 130 based on the local request information.

[0046] According to the dual-loop network control system provided by the utility model, a redundant design can be formed in the dual-loop network. In the event of a failure of the main controller, the system is controlled by the secondary controller to ensure normal communication of the system, improve the anti-interference ability of the system, and ensure the stable operation of the communication system.

[0047] Furthermore, the sub-controller 120 is connected to the local input / output module 130 via a serial communication bus. The sub-controller 120 is also used to generate local request information when it is determined that the main controller 110 is in a fault state, and receive feedback local device information from the local input / output module 130 based on the local request information.

[0048] Specifically, in the embodiment of the present invention, the main controller 110, the sub-controller 120 and the local input / output module 130 are all connected to the serial communication bus of the backplane and are interconnected through the serial communication bus. The sub-controller 120 can generate local request information when determining that the main controller 110 is in a fault state, and receive feedback local device information fed back by the local input / output module 130 based on the local request information.

[0049] Further, the remote communication substation node includes a remote communication substation module and a remote input / output module that are interconnected, and the first type network port 500 and the second type network port 600 are configured on the remote communication substation module of the remote communication substation node;

[0050] The remote communication substation module of the remote communication substation node is used to: forward the first information sent from the sub-controller 120 to the remote input / output module of the remote communication substation node; forward the second information sent from the remote input / output module of the remote communication substation node to the sub-controller 120 through the first ring network 700 and the second ring network 800 respectively;

[0051] The remote input / output module of the remote communication substation node is used to generate second information based on first information forwarded from the remote communication substation module of the remote communication substation node, and forward the second information to the remote communication substation module of the remote communication substation node.

[0052] Specifically, in the embodiment of the utility model, each remote communication substation node includes a remote communication substation module and a remote input / output module that are interconnected, and at least two Class I network ports 500 and Class II network ports 600 are configured on the remote communication substation module. The main controller 110 simultaneously sends the first information to the remote communication substation module of the remote communication substation node through the first ring network 700 and the second ring network 800, and the remote communication substation module forwards the information to the remote input / output module of the remote communication substation node through the internal connection. The remote input / output module generates the second information based on the first information, and then feeds the second information back to the remote communication substation module. The remote communication substation module then forwards the second information back to the main controller 110 through the first ring network 700 and the second ring network 800, and the main controller 110 processes the feedback information.

[0053] Furthermore, the remote communication substation module and the remote input / output module are mounted on a base plate of the remote communication substation node and are interconnected via an internal bus arranged on the base plate.

[0054] Furthermore, the internal bus is a serial communication bus.

[0055] In a possible implementation, the dual-ring network control system includes a master control node 100 and N remote communication substation nodes including a first remote communication substation node 200, a second remote communication substation node 300, ..., and an Nth remote communication substation node 400, where N is an integer greater than 2. The master control node 100 includes a main controller 110, and the main controller 110 has a first network port 500 and a second network port 600. The first remote communication substation node 200 includes a first substation baseboard 230, and the first substation baseboard 230 is provided with a first remote communication substation module 210 and a first remote input / output module 220 that are interconnected through an internal bus of the baseboard, and the first remote communication substation module 210 has a first network port 500 and a second network port 600. The second remote communication substation node 300, ..., the Nth remote communication substation node 400 are the same as the first remote communication substation node 200, and also include a remote communication substation module and a remote input / output module, and the remote communication substation module has a first-class network port 500 and a second-class network port 600. The main controller 110 and the N remote communication substation modules are connected in series in sequence through their respective first-class network ports 500 to form a first ring network 700; the main controller 110 and the N remote communication substation modules are connected in series in sequence through their respective second-class network ports 600 to form a second ring network 800.

[0056] Furthermore, a remote communication substation node includes a plurality of remote input / output modules.

[0057] Specifically, in the embodiment of the utility model, a remote communication substation node includes multiple remote input / output modules, and the remote communication substation module is connected to each remote input / output module through a serial communication bus. The remote input / output module can be used to process different types of first information.

[0058] In this embodiment, the ring network is a two-way communication, and the main controller 110 can send and receive information via the first remote communication substation node 200, and can also send and receive information via the Nth remote communication substation node 400. According to the communication protocol, an intermediate point can be set, for example, the communication link between the first remote communication substation node 200 and the second remote communication substation node 300 is used as the intermediate point, and the nodes on the left side send and receive information via the first remote communication substation node 200, and the nodes on the right side send and receive information via the Nth remote communication substation node 400. When sending the first information, the main controller 110 will predetermine the remote input / output module that receives the first information, such as the first remote input / output module 220 of the first remote communication substation node 200, and mark the address of the first remote input / output module 220 in the first information. The main controller 110 simultaneously sends the first information to the first remote communication substation module 210 through the first ring network 700 and the second ring network 800. The first remote communication substation module 210 forwards the first information to the first remote input / output module 220. The first remote input / output module 220 generates second information based on the first information and then feeds the second information back to the first remote communication substation module 210. The first remote communication substation module 210 then forwards the second information back to the main controller 110 through the first ring network 700 and the second ring network 800, and the main controller 110 processes the second information.

[0059] If a communication link of a ring network between the second remote communication substation module and the third remote communication substation module fails and communication between them cannot be achieved through the Nth remote communication substation module, the main controller 110 can communicate with the second remote communication substation module through the first remote communication substation module 210 .

[0060] The main controller 110 processes the second information including: determining whether the second information fed back by the first remote input / output module 220 is normal, or whether the communication status of the first remote input / output module 220 itself is normal.

[0061] The main controller 110 can determine whether the communication status of the first input / output module 220 itself is normal, for example, whether the feedback time between the time point when the first input / output module 220 sends the first information and the time point when the second information is received is greater than the set time. If the feedback time is greater than the set time, an alarm message is sent to the upper computer. If the second information is fed back within the specified time, the main controller 110 will determine whether the fed-back second information is correct, including whether the second information complies with the communication protocol, or whether the value of the second information is correct. For example, the main controller 110 determines whether the device temperature fed back by the first input / output module 220 exceeds the set temperature. If it exceeds the set temperature, an alarm message is sent to the upper computer.

[0062] The host computer can also send instructions to the main controller 110, and the main controller 110 sends them to the remote input / output card through the remote communication substation module of the remote communication substation node to execute the instructions output by the host computer.

[0063] Furthermore, under normal working conditions, the main controller 110 sends a square wave signal to the sub-controller 120 according to a set period; the sub-controller 120 determines that the main controller 110 has failed in the following manner: if the square wave signal sent by the main controller 110 is not received within the set period, it is determined that the main controller 110 has failed.

[0064] Specifically, in the embodiment of the utility model, the main controller 110 sends a square wave signal to the sub-controller 120 according to a set period under normal working conditions. If the sub-controller 120 receives the square wave signal within the set period, it is determined that the main controller 110 is working normally. If the sub-controller 120 does not receive the square wave signal within the set period, it is determined that the main controller 110 fails and cannot send the square wave signal.

[0065] In this embodiment, the failure of the main controller 110 includes: hardware failure and communication failure. The hardware failure includes Ethernet chip failure, optical fiber transceiver failure and switch chip failure; the communication failure includes Ethernet communication failure and optical fiber communication failure.

[0066] Furthermore, the communication node also includes a sub-controller 120 .

[0067] Specifically, in the embodiment of the utility model, the main controller 110, the sub-controller 120 and the remote communication substation module can be connected in series to form a cross ring network through their respective first-class network ports 500 and second-class network ports 600. For example, in the case where the first ring network communication between the first remote communication substation module 210 and the second remote communication substation module fails, the main controller 110 can first send the first information to the first remote communication substation module 210 through the first ring network between its own first-class network port 500 and the first-class network port 500 of the first remote communication substation module 210, and the first remote communication substation module 210 then sends the first information to the second remote communication substation module through the second ring network between its own second-class network port 600 and the second-class network port 600 of the second remote communication substation module.

[0068] Furthermore, in the dual-ring network control system, each two communication nodes include a first ring network segment and a second ring network segment; when the main controller 110 detects a communication failure between two adjacent communication nodes in the first ring network 700, the second ring network segment between the two adjacent communication nodes and the remaining normally working first ring network segment in the first ring network 700 form a cross-ring network.

[0069] Further, the communication failure between two adjacent communication nodes in the first ring network includes: a failure of the first ring network segment between the two communication nodes and / or a failure of the first network port 500 corresponding to the first ring network segment.

[0070] Specifically, in the embodiment of the utility model, when a ring network segment of one of the ring networks is detected to have a fault (including a fault in any of the two network ports or a ring network segment between the two network ports), a cross ring network can be formed with another ring network to achieve normal communication of the system, improve the anti-interference ability of the system, and ensure the stable operation of the communication system. For example, if the first ring network segment between the main controller 110 and the first remote communication substation module fails, the main controller 110 can first communicate with the first remote communication substation module through the second ring network segment, and the first remote communication substation module can continue to communicate with the second remote communication substation module through the remaining normally working first ring network segment. For another example, if the first ring network segment between any two adjacent remote communication substation modules fails, the main controller 110 can first control the previous remote communication substation module to communicate with the next remote communication substation module through the second ring network segment, and control the next remote communication substation module to continue to communicate with the following remote communication substation module through the remaining normally working first ring network segment.

[0071] In a possible implementation, when it is detected that one of the remote communication substation modules has one remaining Class I network port 500 operating normally, the main controller 110 or the sub-controller 120 controls the remote communication substation module to use the Class II network port 600 and the remaining Class I network port 500 to be connected in series with the main controller 110, the sub-controller 120 and the remaining remote communication substation modules to form a cross ring network of the first ring network and the second ring network. Specifically, the remote communication substation module has two Class I network ports 500 and two Class II network ports 600. In the first ring network 700, one Class I network port 500 receives the first information, and the other Class I network port 500 sends the first information. In the second ring network 700, one Class II network port 600 receives the first information, and the other Class II network port 600 sends the first information. If the main controller 110 or the sub-controller 120 detects that the type-one network port 500 for receiving the first information of one of the remote communication sub-station modules fails, and the remaining type-one network port 500 for sending the first information operates normally, the remote communication sub-station module is controlled to use the second network port 600 to receive the first information, and then send the first information through the remaining first network port 500, and is connected in series with the main controller 110, the sub-controller 120 and the remaining remote communication sub-station modules to form a cross-ring network of the first ring network and the second ring network.

[0072] According to the dual-ring network control system provided by the utility model, when a communication link in one of the ring networks fails (including a communication link failure between two network ports or between two network ports), it can form a cross-ring network with the other ring network to achieve normal communication of the system, improve the anti-interference ability of the system, and ensure the stable operation of the communication system.

[0073] A second aspect of the utility model provides an electric power system, which includes the dual-loop network control system described above.

[0074] The third aspect of the utility model provides a communication control method for a dual-ring network control system, the dual-ring network control system includes a main controller, a sub-controller and at least one remote communication substation node, each remote communication substation node includes a remote communication substation module and a remote input / output module that are interconnected, the method is applied to the main controller, including: sending first information to the remote communication substation module of the remote communication substation node through the first ring network and the second ring network at the same time; receiving second information forwarded from the remote communication substation module through the first ring network and the second ring network respectively; wherein the second information is generated by the remote input / output module of the remote communication substation node based on the first information forwarded from the remote communication substation module of the remote communication substation node; and processing the second information.

[0075] Furthermore, the method also includes: sending the first information to the sub-controller through the first ring network and the second ring network respectively; receiving the second information forwarded from the sub-controller through the first ring network and the second ring network respectively; and processing the second information.

[0076] A fourth aspect of the utility model provides a communication control method for a dual-ring network control system, the dual-ring network control system comprising a main controller, a sub-controller and at least one remote communication substation node, each remote communication substation node comprising a remote communication substation module and a remote input / output module interconnected with each other, the method being applied to the sub-controller, comprising: when the main controller is working normally, forwarding first information received from the main controller to the remote communication substation module through the first ring network and the second ring network respectively; forwarding second information received from the remote communication substation module to the main controller; in the event of a failure of the main controller, sending the first information to the remote communication substation module through the first ring network and the second ring network at the same time; receiving the second information forwarded from the remote communication substation module through the first ring network and the second ring network respectively; wherein the second information is generated by the remote input / output module of the remote communication substation node based on the first information forwarded from the remote communication substation module of the remote communication substation node; and processing the second information.

[0077] Furthermore, the main controller failure is determined in the following manner: if the square wave signal sent by the main controller is not received within a set period, the main controller failure is determined; wherein, the main controller sends a square wave signal to the sub-controller according to the set period under normal working conditions.

[0078] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention.

[0079] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present utility model will not further describe various possible combinations.

[0080] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A dual-loop network control system, characterized in that: The dual-loop network control system comprises: A master control node (100) comprises a main controller (110), a sub-controller (120) and a local input / output module (130), wherein the local input / output module (130) forms a communication connection with the main controller (110); the main controller (110) has a first-class network port (500) and a second-class network port (600); the sub-controller (120) has a first-class network port (500) and a second-class network port (600), and is respectively connected in series to a first ring network (700) and a second ring network (800) through the first-class network port (500) and the second-class network port (600); wherein the first-class network port (500) and the second-class network port (600) are of different network port types; A plurality of remote communication substation nodes, each of which has a first-class network port (500) and a second-class network port (600); The main controller (110) and the remote communication substation node are used as communication nodes, and are connected in series in sequence through their respective first-class network ports (500) to form a first ring network (700), and are connected in series in sequence through their respective second-class network ports (600) to form a second ring network (800); the first ring network (700) and the second ring network (800) can form a cross ring network through communication nodes.

2. The dual-loop network control system according to claim 1, characterized in that: The remote communication substation node comprises a remote communication substation module and a remote input / output module which are interconnected, and a first-class network port (500) and a second-class network port (600) are arranged on the remote communication substation module of the remote communication substation node.

3. The dual-loop network control system according to claim 2, characterized in that: The remote communication substation node and the remote input / output module are mounted on the bottom plate of the remote communication substation node and are interconnected via an internal bus arranged on the bottom plate.

4. The dual-loop network control system according to claim 3, characterized in that: The internal bus is a serial communication bus.

5. The dual-loop network control system according to claim 2, characterized in that: A remote communication substation node includes multiple remote input / output modules.

6. The dual-loop network control system according to claim 1, characterized in that: The communication node also includes a sub-controller (120).

7. The dual-loop network control system according to claim 1, characterized in that: The sub-controller (120) is in communication with the local input / output module (130) via a serial communication bus.

8. The dual-loop network control system according to claim 1, characterized in that: The first type network port (500) is a fiber optic network port, and the second type network port (600) is an Ethernet port.

9. A power system, characterized in that: The power system comprises the dual-loop network control system as described in any one of claims 1-8.

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