280 results about "Loop network" patented technology

This invention provides a method, apparatus, electronic device, and readable storage medium for redundancy control in ring network communication, relating to the field of vehicle-mounted communication. The method includes: controlling nodes in the vehicle-mounted ring network system to detect abnormal Ethernet link states and broadcast these states via CAN communication; a master control node can determine whether to switch redundant links based on the relevant link abnormal states of each node; if switching is required, a switching control message is broadcast via CAN communication; and each node can adjust its port settings based on the switching control message. By implementing Ethernet link detection and redundant link switching control based on Ethernet communication itself, and by integrating the functions of determining whether to switch links based on abnormal link states and broadcasting switching control messages into the master control node, the requirements for nodes other than the master control node are reduced. This lowers the hardware resource requirements of the vehicle-mounted ring network communication redundancy control scheme compared to existing solutions, making it simpler, easier to implement, and more usable.

The invention discloses a planning method and system for a high-reliability current collection system of an offshore floating type wind power plant, and the method comprises the steps: applying a looped network topology in the current collection system of the offshore floating type wind power plant to improve the operation reliability, and enabling the looped network topology to be an electrical connection mode that a plurality of fans are connected into a closed loop through cables; wherein the energy can flow bidirectionally, and performing two-stage dynamic planning for the current collection system: firstly executing dynamic site selection and topology planning of an offshore substation, then executing optimization and topology planning of substations by fans, and outputting the optimal substation position, fan distribution set and wind power plant planning total cost. The method aims at rapidly achieving dynamic multi-target planning of the offshore floating type wind power plant so as to ensure the operation reliability of the offshore floating type wind power plant and the economical efficiency of the whole life cycle cost, precise optimization of substation site selection is achieved, and the optimal configuration of the membership relation of fans and substations is ensured.

The invention relates to the technical field of coal mine dynamic mine pressure monitoring and intelligent early warning and prediction, and particularly discloses a coal mine dynamic mine pressure monitoring and intelligent early warning and prediction system, which comprises a monitoring terminal layer, which comprises a plurality of mine pressure monitoring sensors, and the mine pressure monitoring sensors are respectively arranged in different monitoring areas of an underground coal mine. The mine pressure parameter acquisition module is used for acquiring mine pressure parameters of a corresponding area in real time, and the mine pressure parameters comprise roof subsidence, support working resistance, coal seam stress and surrounding rock deformation; and the data transmission layer is connected with the monitoring terminal layer and comprises an underground ring network switch and a ground industrial Ethernet. According to the dynamic mine pressure monitoring and intelligent early warning prediction system for the coal mine, the data reliability is ensured in combination with sensor state monitoring, the mine pressure trend in the next 24 hours is accurately predicted by adopting an improved LSTM neural network and an AWA-GC optimization algorithm, and the system adapts to nonlinear changes under complex geological conditions.

The invention belongs to the field of underground equipment monitoring, particularly relates to a coal mine underground equipment real-time monitoring method based on a red mine system, and aims to solve the technical problems of low information transmission speed and low accuracy of manual monitoring equipment. The method comprises the following steps: acquiring underground equipment information in real time through a sensor and an adaptive module of a red mine system; the Modbus TCP protocol data stream is uploaded and converted into a Modbus TCP protocol data stream; the data stream is transmitted to a centralized management and control platform through an underground looped network; on the gateway side, edge side preprocessing is carried out on the collected data stream; and the centralized management and control platform receives the processed data flow, carries out platform-level data cleaning and fusion processing, and carries out real-time state monitoring, health degree evaluation and fault early warning on the equipment. According to the invention, the centralized management and control platform is established by adopting the Hong mine system to monitor and manage the underground equipment in a unified manner, so that the intelligent level, the information transmission speed and the accuracy of a coal mine are improved, and real-time monitoring, fault early warning and maintenance management can be better carried out on the underground equipment.

The invention relates to the technical field of the intelligent power grid industry, in particular to a power distribution and utilization ring network fault intelligent troubleshooting method and system. According to the method, a looped network situation primitive is generated through multi-source heterogeneous data fusion. The primitives are input into synchronous compression transformation to extract transient fault initial features, and the transient fault initial features are mapped into fault propagation path features through a graph convolutional network considering topological structure constraints; then, inputting the features into a space-time correlation prediction model, integrating defect type judgment and trend pre-judgment features, and generating a fault diagnosis evidence set; and starting an investigation mechanism based on the evidence set to determine an interval to be investigated, and performing closed-loop verification by constructing a fusion judgment matrix based on multi-modal physical sensing information to realize physical space locking of a fault defect point. According to the method, deep learning diagnosis and multi-mode positioning are integrated, and the detection precision and the positioning efficiency of looped network defects and the identification capability of transient hidden faults are effectively improved.

The application discloses a power transmission line fault diagnosis and operation and maintenance scheduling method and system based on network learning, relates to the technical field of power transmission line fault diagnosis and operation and maintenance scheduling, and comprises the following steps: acquiring electrical quantity data, equipment operation state data, ring network topology and time sequence data and the like, extracting relevant data to construct a high-risk equipment area and a visual high-risk area heat map, combining the electrical quantity data to construct a visual risk classification map, combining a convolutional neural network-long short-term memory network hybrid model to construct an intelligent recognition storage network and a fault type classification recognition model, optimizing the model through network learning and an attention mechanism, combining an operation and maintenance management system to autonomously allocate a maintenance team and resources, and then realizing autonomous optimization and closed-loop operation, so that the application realizes full-process coverage from fault perception, intelligent decision and efficient response, significantly shortens the reaction time after line fault occurrence, and comprehensively enhances the fault disposal and operation and maintenance capability of the power grid system.

The invention relates to the technical field of network communication, in particular to a high-efficiency message routing method of an independent gateway controller, which comprises the following steps of: constructing a routing table by analyzing network topology in a mode of combining a dynamic routing protocol with static configuration, mapping and storing a target address and a forwarding path, and transmitting a message to the gateway controller; the method comprises the following steps of: analyzing a source protocol frame structure to extract effective load data, repackaging the data according to a target protocol specification, realizing link redundancy by adopting a ring network protocol, automatically switching a standby link and maintaining an equivalent path when a main link fails, and obtaining a flow trend and performance data by monitoring a network load and an equipment state in real time. And dynamically adjusting a routing strategy according to the data, and periodically generating a performance report to obtain a continuously optimized routing scheme. According to the method, the problems that the routing table query efficiency is low and the routing strategy cannot be dynamically optimized according to the real-time state of the network in the traditional method are solved.

The invention relates to the technical field of civil engineering structure safety monitoring and Internet of Things communication, in particular to a bridge and tunnel structure health monitoring system and a looped network fault self-healing communication method. The system comprises a sensing acquisition layer, a ring network communication layer and a monitoring application layer, wherein the sensing acquisition layer comprises a plurality of data acquisition nodes which are deployed at key parts of a bridge and a tunnel in a distributed manner and is used for acquiring physical response data; according to the ring network communication layer, data acquisition nodes are connected in series through communication links to form a physical closed-loop topology, and each data acquisition node is provided with double communication ports and is connected with adjacent network equipment; the ring network communication layer operates an intelligent route switching mechanism, and can control nodes to switch a route path when a fault occurs. Through the three-level architecture, the physical closed-loop topology, the double communication ports and the intelligent route switching mechanism, the single-point fault hidden danger of a traditional communication architecture is solved from the source, and the system communication reliability and the data transmission continuity are greatly improved.

The invention discloses a steam pipe network pressure prediction method and device. The method comprises the following steps: acquiring a state data sequence of a plurality of nodes in the steam pipe network under a plurality of dimensions in a first time period; a steam pipe network distribution diagram is obtained, a weighted directed graph corresponding to the steam pipe network is constructed according to the steam pipe network distribution diagram and the state data sequence, and the weighted directed graph comprises the connection relation of multiple nodes and the weight of each edge; and analyzing the state data sequence and the weighted directed graph by using a pre-trained pressure prediction model to obtain respective pressure data sequences of the plurality of nodes in a second time period after the first time period, the pressure prediction model including a bidirectional diffusion convolutional network and a gated loop network. The technical problems that a traditional data-driven model is difficult to capture space-time correlation, and the prediction precision and timeliness of the pressure of the steam pipe network are insufficient are solved.

The utility model discloses a primary and secondary fusion environment-friendly gas insulated looped network box, which belongs to the technical field of electrical equipment, and comprises a box body, the top of the box body is fixedly connected with a top cover, the top cover is internally provided with a cavity, and a plurality of activated carbon filter plates are fixedly connected in the cavity. Two air inlet channels are fixedly installed at the bottom of the top cover, first exhaust fans are installed in the air inlet channels, air inside and outside the box body can be rapidly circulated through cooperation of the first exhaust fans and second exhaust fans, heat generated inside is discharged out of the box body along with flowing of the air, and the heat dissipation efficiency is improved. And meanwhile, the linear guide rails and the supporting and guiding assemblies are additionally arranged, so that the main body of the electrical element can be directly pulled out from the box body, and the maintenance or the mounting and dismounting operation of the electrical element by a worker is more convenient.

The invention discloses an adaptive multi-loop network InSAR phase unwrapping method and device, and relates to the technical field of interferometric synthetic aperture radar measurement. The method comprises the following steps: acquiring an interferometric phase diagram and a topographic map of a complex topographic region; calculating coherence, a topographic gradient map, a phase gradient standard deviation and residual density based on the interferometric phase map and the topographic map; based on the coherence, the terrain gradient map, the phase gradient standard deviation and the residual density, dynamically selecting the size of a ring through a decision function, and constructing a multi-ring network; determining the connectivity of the multi-ring network according to a bridging strategy and a connectivity detection method, and outputting a global connected network; on the basis of the global connected network, layered residual optimization is carried out by adopting a local absorption and global planning double-layer strategy, and an optimized residual is output; and based on the optimized residual error, unwrapping all rings in the global connected network through an in-ring local unwrapping and global optimization strategy, and outputting an unwrapping result. According to the invention, the problem of network connectivity in a complex area can be solved.

The invention discloses a neighborhood center layout-based power distribution looped network diagram automatic generation method, system and device, and a storage medium, and relates to the technical field of electrics, and the method comprises the steps: carrying out the branch model cutting and preprocessing of a power distribution looped network diagram device topology model relation; and generating a trunk path equipment set comprising a transformer substation power supply node, a connection switch node and a trunk path switch node, and complementing feeder attribute information through a width search algorithm when feeder attributes are missing and wrong. And constructing a graph calculation model according to the main path equipment set and the line topological relation, and generating a power supply node set and a node and edge data structure. And calculating the connection degree between the power supply nodes based on the power supply node set, performing ascending sorting, executing initial layout of the power supply nodes according to a sorting result, performing neighborhood center layout and local orthogonal processing on non-power supply nodes by using an initial layout result, and generating node positions of the looped network graph with balanced layout. According to the invention, the intuition readability of the distribution ring network graph is improved.

The application discloses a communication method, device, system and train, relates to the field of optical fiber communication, and is applied to a processor in any compartment of a train, wherein the processor is connected with an optical fiber ring network, the processor and train communication equipment in the compartment perform communication data interaction, and then the processor and the optical fiber ring network perform communication data interaction in the form of optical signals, so that the train communication equipment in different compartments can communicate with each other. The communication data is not easy to be lost and is not easy to be affected by electromagnetic interference through the mode of data transmission by optical fibers instead of cables, so that the communication quality of the train communication equipment is improved. Moreover, the communication data of multiple train communication equipments is converted into optical signals and transmitted in the form of a bundle of light, so that multiple communication networks are not needed, and only one optical fiber ring network can realize data transmission of multiple train communication equipments at the same time, so that the complexity of the wiring environment in the train is reduced, and the total weight of the train is reduced.

The invention discloses a charging pile ring network communication method based on a virtual interaction technology, and belongs to the technical field of electric vehicle charging. The method comprises the steps that a terminal charging management control unit TCCU and a plurality of terminal management units TMUs are connected through network cables to form an annular physical connection system, and an annular network topology is constructed; using the terminal charging management control unit TCCU as a server to configure a fixed IP address for the terminal charging management control unit TCCU; each TMU is used as a client, and a unique IP address and a unique MAC address are automatically allocated based on single-board dial-up of the TMU; the TMU sends an ARP (Address Resolution Protocol) message to obtain a server MAC (Media Access Control) address, then the TMU initiates a TCP / IP (Transmission Control Protocol / Internet Protocol) connection request, the TCP / IP connection request is forwarded through network ports of other TMUs on the ring network system, and a stable communication link is established after the TCCU responds to the TCP / IP connection request; and the TMU receives the network data through the network port and compares the target MAC address, and non-self data is forwarded to the next TMU through another network port until the data is sent to the server to complete communication.

The invention belongs to the technical field of management and control systems, and particularly relates to an intelligent comprehensive management and control system for a coal mine, which comprises a sensing layer comprising a multi-source heterogeneous sensor network and an edge computing node; the transmission layer is used for realizing data return based on an industrial ring network and a wireless communication redundant network; a platform layer; the application layer comprises an intelligent comprehensive monitoring center, a production intelligent management and control module, a safety intelligent prevention and control module and an intelligent emergency command module; the intelligent comprehensive monitoring center realizes total-factor visualization and risk early warning; the production intelligent management and control module associates the geologic model with the real-time data and dynamically optimizes the mining plan; the safety intelligent prevention and control module identifies personnel unsafe behaviors and carries out hidden danger closed-loop management; and the intelligent emergency command module responds to early warning and executes linkage operation, and supports off-line handling when network interruption or platform layer faults occur. By constructing a multi-layer architecture comprising a sensing layer, a transmission layer, a platform layer and an application layer, comprehensive intelligent management and control of a coal mine production process are realized.

The application provides a resilient packet ring message forwarding method and device. The method comprises the following steps: receiving a cross-device link aggregation announcement message through a resilient packet ring network; allocating a RPR cross-device link aggregation identifier for a RPR MAC address of a member node carried by the cross-device link aggregation announcement message; receiving an Ethernet unicast message; when a destination MAC address of the received Ethernet unicast message corresponds to a RPR cross-device link aggregation identifier; performing hash calculation according to the Ethernet unicast message, taking a RPR MAC address of a member node corresponding to a result of the hash calculation as a destination RPR MAC address, taking a RPR MAC address of the current node as a source RPR MAC address, and encapsulating the received Ethernet unicast message into a RPR unicast message; and sending the RPR unicast message through an out port of a shortest RPR path reaching the destination RPR MAC address of the RPR unicast message.

The application relates to the technical field of charging facility operation and maintenance, and discloses an electric vehicle looped network sharing intelligent operation and maintenance method, which comprises the following steps: a cloud server acquires monitoring data and extracts a multi-dimensional fault feature vector representing the space-time operation state of a looped network and a charging module; a detection model fusing a graph neural network and a bidirectional long short-term memory network is used to deeply fuse space and time features to output a fault probability; a fault type is determined based on a probability decision logic and a multi-modal cross-validation mechanism, and a similarity matching algorithm is used to lock a specific fault source; and a hierarchical self-healing control instruction is sent to a power distribution control module and a rectification module based on a fault level, and a derating operation, isolation bypass or full stop protection strategy is respectively executed. Through the multi-dimensional feature fusion and hierarchical response mechanism, the application effectively solves the problem of difficult DC looped network fault positioning, and guarantees system service continuity.

The application discloses a kind of based on ring network fusion's collaborative task efficiency analysis method and device, it is related to efficiency analysis technical field.The unmanned aerial vehicle collaborative task system is simplified as four types of node types containing OODA ring;Based on the four types of nodes of OODA ring, determine actual connection edge, obtain task network, extract generalized OODA ring from task network, cover collaborative relationship;Generalized OODA ring node attribute quantization framework based on task demand is built, including task-driven node attribute extraction, quantization method and data acquisition path and data normalization processing;Based on generalized OODA ring node attribute quantization framework, nonlinear aggregation is carried out, and the efficiency of task network is comprehensively analyzed based on the probability of task success.The problem that the prior art cannot accurately capture the efficiency change of unmanned aerial vehicle collaborative task system in dynamic confrontation process, and is limited in practical application, is solved.

The application provides a compact looped netowrk cabinet for power distribution looped network, and relates to the technical field of looped network cabinets, which comprises a cabinet body, a mounting plate and a supporting base, the inner wall of the cabinet body is fixedly connected with an annular mounting frame, the annular mounting frame is provided with a mounting assembly for realizing rotation and switching of functional modules, the inner cavity of the cabinet body is provided with a wire fixing assembly for preventing cable winding, the bottom end of the mounting plate is fixedly connected with a first linear guide rail, and the top end of the supporting base is fixedly provided with a second linear guide rail, the functional units located in the deep interior are rotated to the front of the cabinet body through the rotation of the rotating tray, the operation space of the inner cavity of the compact looped network cabinet is avoided from being limited, and the problems of poor contact or faults are avoided, meanwhile, the electric energy of the static power supply is transmitted to the rotating part through the wire fixing assembly, the traditional wires are avoided from being broken due to twisting when rotating, and the problems of poor contact or faults caused by insufficient cable connection and adjustment space of the traditional compact looped network cabinet are also avoided.

This application provides a method for monitoring faults in intermediate joints of 35kV ring network cables in urban rail transit, relating to the field of data processing. In this method, a cable segmentation diagram is constructed, and joint identification nodes and ring network status identifiers are generated. A synchronous observation array is established based on the station to collect transient voltage and current segments to form event evidence packages. Under the same ring network status, a set of propagation operators is constructed, and a virtual playback field is generated through recorrelation and superposition to produce a focused spectrum. Under the same operating context, a reversibility discrimination is performed to screen candidates for saturated critical states. A first focused spectrum and a second focused spectrum are generated, and structural fracture is synchronously checked. Finally, the target joint identification node is located, and the intermediate joint fault monitoring results are output. Implementing the technical solution provided in this application facilitates overcoming the dependence on continuous gradual changes and identifying the electric field reconstruction characteristics caused by space charge trap saturation, thereby improving the accuracy of abrupt degradation judgment.

The utility model discloses a mining wireless spraying and dust falling system based on distributed optical fiber temperature measurement, which comprises an optical fiber temperature measurement system and a wireless spraying, watering and dust falling system which are respectively connected with an underground looped network through a wireless switch, and the underground looped network is in signal connection with an external dispatching centralized control center through a ground looped network. Wherein the optical fiber temperature measuring system comprises a temperature sensing optical cable laid along the whole course of a roadway and a temperature monitoring element used for continuously scanning the temperature sensing optical cable, and the wireless spraying, watering and dust falling system comprises an underground centralized control center, a wireless pyroelectric infrared sensor and a wireless spraying host machine laid along the whole course of the roadway. The underground centralized control center is in signal connection with the underground looped network, the wireless spraying main machine is provided with an air and water valve, and the temperature monitoring element is in signal connection with the wireless spraying main machine. According to the mining wireless spraying and dust-settling system based on distributed optical fiber temperature measurement, the effects of water spraying and dust settling and fire preventing and extinguishing can be achieved at the same time, and use is convenient.

The invention discloses a power distribution network short-circuit current suppression method and device based on a double-voltage-level ring network. The method comprises the following steps: constructing a dual-voltage hierarchical ring network topological structure comprising a 10kV main ring network and a 0.4 kV sub ring network, and dividing a system into more than three power supply subareas by using a subarea switch; a distributed current limiting unit is deployed between the power supply subarea and the grid-connected new energy power supply; when a short-circuit fault occurs in the system, the dynamic splitting device acts immediately, the interconnection switch is disconnected, composite additional impedance is injected into a fault path, and topology reconstruction is carried out; and during topology reconstruction, multi-stage dynamic response is started through the distributed current limiting units so as to suppress short-circuit current.

The invention discloses a power distribution method and a charging system, and relates to the technical field of charging. The method is applied to the power distribution device, the power distribution device comprises n switch units and m groups of second controllable switches, each switch unit comprises two groups of first nodes, one group of second nodes and three groups of first controllable switches, and every two groups of first nodes and second nodes are connected through one group of first controllable switches. The two groups of first nodes and second nodes are respectively connected with corresponding power modules in the charging system, and the adjacent first nodes in all the switch units are sequentially connected through a group of second controllable switches to form a first looped network; the method comprises the steps that at least two gun outlet points in all the switch units serve as target gun outlet points, and charging interfaces corresponding to the target gun outlet points are controlled to be connected with the same charging terminal of the charging system. Therefore, the utilization rate of the power module in the charging system is improved on the premise of considering the diversity of charging requirements.

The invention relates to the technical field of power distribution network power supply and operation control, and discloses an intelligent operation management method of a primary and secondary fusion ring main unit. The method is used for solving the problems of safe and stable operation and poor rapid power restoration effect of a power distribution network in a traditional method. The method comprises the following steps: firstly, a service triggers and freezes topology and a strategy version, and a sampling window and an event window are established to gather remote signaling, remote measurement, receipt and alarm to form an operation context; carrying out hierarchical grading on point locations according to freshness, missing and conflicts, and determining a data availability level, a risk level, a decision conservative level and segmentation granularity; isolation locking, sequence protection, transfer boundary reliability and time sequence alignment checking are sequentially completed to generate a constraint list, a plan packet is issued according to segments, segment preconditions, multi-source confirmation points and rollback rules are configured, monitoring confirmation is conducted, rollback is conducted when abnormity occurs, or an archiving track is terminated, and auditing and rapid isolation power restoration can be achieved.

The invention relates to a secondary looped network system based on airborne equipment, which comprises a primary looped network and a secondary looped network, and is characterized in that the primary looped network comprises a passenger cabin interface unit and a plurality of area control units, and each area control unit is connected with a plurality of passenger service control units to form the secondary looped network; the area control unit determines the logic position of the area control unit in the first-level ring network by collecting the level state of a set port of the area control unit, and generates a corresponding second-level ring network topological graph by summarizing neighbor node information sent by the passenger service control unit in the second-level ring network where the area control unit is located. The airborne network which is high in reliability, easy to maintain and excellent in experience can be effectively achieved, the problems that a traditional airborne network is slow in convergence and complex in maintenance are solved, and expansibility of the system is improved.

This disclosure relates to a ring network cooling device configured to cool equipment in a data center on the secondary side of a liquid cooling system. The ring network cooling device includes a first ring network serving as a primary ring network, divided into multiple working sections. Each working section is configured to cool corresponding equipment. The device also includes a second ring network serving as a backup ring network, configured to continue cooling the corresponding equipment in place of one or more working sections of the first ring network when one or more of those sections are affected by a fault. The affected working sections of the first ring network are deactivated. This disclosure also relates to a method for coordinated control of the ring network cooling device and a data center.

The present invention relates to a PLC device related to functional safety. The safety control PLC device according to the present invention comprises a plurality of communication modules and a safety control module for controlling same, wherein: the safety control module satisfies a predetermined standard for functional safety and controls the plurality of communication modules; and the communication modules support a RAPIEnet network and constitute each network as a ring network, thereby facilitating adding or expanding of a conventional PLC network, and implementing a stable safety control function.

The application discloses a hydropower station network reconstruction method based on a redundancy technology, which comprises the following steps: upgrading an internal control network of a hydropower station into a hundred-megabit redundant fiber ring network and configuring an MRP sub-ring redundancy protocol; establishing a Hiper-Ring gigabit redundant fiber ring network between watersheds of cascade hydropower stations and starting three-layer routing function and VRRP function; using Hesmann three-layer switches for data transmission between a remote control center and the hydropower station; adopting a link aggregation technology to add a two-layer aggregation device between a dam LCU switch and a watershed switch RSPE30; and performing function test. The hydropower station network reconstruction method based on the redundancy technology provided by the application adheres to the principles of openness, expansibility, reliability and investment saving, eliminates existing problems based on the existing network, does not affect the operation of the network that has been put into use during later network access reconstruction, combines industrial control technology with IT technology, and provides a redundant, reliable and efficient automatic control communication network for a computer monitoring system of the hydropower station.

A vehicle communication system comprises: Ethernet gateways, wherein each of the Ethernet gateways (i) is designated to serve as the Ethernet gateway in addition to performing other automotive functions in a vehicle; (ii) is coupled to multiple buses for respective subsystems having electronic control units (ECUs) communicating using respective automotive bus protocols; and (iii) is configured to encapsulate within Ethernet packets received communications of the respective automotive bus protocols; Automotive Ethernet cables connecting the Ethernet gateways in a ring topology, each of the Ethernet gateways connected to two others of the Ethernet gateways that are adjacent to the Ethernet gateway; and a communication matrix in each of the Ethernet gateways, wherein each of the ECUs is specified as belonging to at least one of multiple virtual local area networks (VLANs), wherein a VLAN tag is included in each of the Ethernet packets.

This invention discloses a communication configuration method, device, electronic equipment, and storage medium for differential protection of distribution network ring networks, belonging to the field of power automation technology. The method includes: disconnecting all differential protection circuits within the first target differential ring where the fault differential protection device is located; disconnecting the optical fiber link between the fault protection device and other differential protection devices; after replacing the fault differential protection device with a new differential protection device, restoring the optical fiber link between the new differential protection device and other differential protection devices; controlling the static routing table corresponding to the first target differential ring to be updated, setting the differential protection activation identifier of the first target differential ring in the static routing table, and the differential protection activation identifier of each differential protection device within the first target differential ring, to the corresponding activation status identifier. Therefore, by implementing this invention, the problems of existing technologies that rely on manual on-site parameter setting, resulting in high cost and low reliability can be solved.