14 results about "Network topology" patented technology

The invention provides an OpenStack based software defined network simulation system. The system comprises a virtual machine creating module, a simulation network setting module and a test module, wherein the virtual machine creating module creates multiple virtual machines according to requirements, the simulation network setting module arranges at least one software defined network controller and at least one software defined network switch in the created virtual machines according to requirements so as to establish a corresponding network topology network, and the test module tests whether the arranged software defined network controller and software defined network switch satisfy requirements according to the established network topology structure. The system uses the test module to test whether the arranged software defined network controller and software defined network switch satisfy requirements, so that the needed controller and switch can be developed according to requirements, the setting flexibility of the software defined network is improved, and the design cost is reduced. The invention also provides a software defined network simulation method.

The invention relates to the technical field of distribution network models, and provides a method and a system for establishing a distribution network model. The method comprises the following steps: acquiring preset maintenance authorizations of the distribution network model; establishing a primary equipment model and a secondary equipment model in a range specified by the maintenance authorizations, and drawing a figure, wherein the secondary equipment model and the figure are respectively associated with the primary equipment model; according to the primary equipment model, the secondary equipment model and the figure which are associated, generating a network topology model; and informing other model maintenance modules to update network topology models respectively maintained by themselves according to the generated network topology model by using online modeling information. According to the invention, through acquiring the preset maintenance authorizations of the distribution network model, the correctness of a multi-people maintenance model can be ensured, thereby facilitating maintenance; and other model maintenance modules are informed to update network topology models respectively maintained by themselves according to the generated network topology model by using online modeling information, so that a power grid model is always consistent with an actual power-grid running model.

The invention provides a protection method and device for a serial bus communication network, which can be applied to a master site in a serial bus communication network topology structure. The network topology structure comprises a master site and a plurality of slave sites, wherein the master site is connected to each slave site in series to form a loop structure; each slave site is in a working mode for reception and unvarnished transmission of data; the method comprises a step that the master site changes a data sending port to form a new work data loop with a device node which is affected by a fault when receiving a fault report about the fault of the loop structure. The invention also provides a protection device adopting the method. In comparison with the existing protection device, a large amount of invalid data and repeated data in the loop can be avoided, the data processing amount of each device in the loop structure is reduced, the protection effect is optimized and the overall power consumption of the loop is reduced.

The invention relates to a regional multi-microgrid dynamic networking method based on a graph theory. The regional multi-microgrid dynamic networking method is technically characterized by comprisingthe following steps that 1, according to a multi-objective function optimum in global economic operation and highest in system power supply reliability of an intra-regional multi-microgrid and presetconstraint conditions, an optimization model of a regional multi-microgrid is established; 2, a regional multi-microgrid dynamic networking model based on the graph theory is established by combiningwith network topology connection of a regional multi-microgrid system based on the regional multi-microgrid optimization model established in the step 1; 3, an improved particle swarm algorithm is adopted to solve the regional multi-microgrid dynamic networking model based on the graph theory, and dynamic networking of the regional multi-microgrid is achieved. By combining with interconnection and intercommunication characteristics of the regional multi-microgrid and power output constraint of the microgrid, the optimization model optimum in global economic operation and highest in system power supply reliability of the regional multi-microgrid is established, and a solution is provided for dynamic multi-microgrid networking in a regional range.

The invention discloses a confirmation method of wave beam weight and a device. The method comprises confirming a plurality of coordination nodes; and respectively confirming the wave beam weight of each coordination node in the plurality of coordination nodes according to the network topology structure of the plurality of coordination nodes. In the invention, the wave beam weight of each coordination node can be confirmed by using the network topology relation of the plurality of coordination nodes in no need of channel information feedback by a user, thus reducing channel expenditure and avoiding quantification error generated by channel quantification.

The invention belongs to the technical field of production plans, and discloses a job shop scheduling method based on a graph neural network, and the method comprises the steps: enabling the sequence of internal production processes of workpieces and the machine assignment condition between the workpieces to be visible; designing a reward function to evaluate the scheduling decision; embedding and extracting node feature information of the disjunction graph; and carrying out scheduling strategy network learning and graph neural network parameter adjustment. The generalization ability of the manufacturing system job shop scheduling method is improved, and the method can be applied to job shop scheduling of different network scales in the same system. According to the method, the job scheduling problem is subjected to network topology, the generalization ability of a scheduling algorithm is improved, the job shop scheduling problem can be effectively solved, and the method has the characteristics of high universality and high adaptability.

The invention discloses a reinforced control cable which comprises a cable core and an outer sheath. The cross section of the outer sheath is formed by combining the circular large end and the circular small end into a whole. The cable core formed by twisting and combining two insulated wire cores is wrapped with the large end of the outer sheath. A filling layer is arranged at a gap of the cable core. A shielding layer wraps the cable core in a winding mode. A reinforcing steel wire is arranged in the small end of the outer sheath and is parallel to the cable core. Each insulated wire core is composed of a conductor and an insulation layer; each conductor is formed by a plurality of anaerobic copper wires in a compound twisting mode, and one insulation layer wraps one conductor in an extrusion mode and is made of irradiation crosslinking or silane crosslinked polyethylene insulating materials. The reinforced control cable is reasonable and simple in structure, easy to produce and manufacture, low in cost and free of pollution, has high flexibility, restorability and tensile resistance, is compact and round in structure, safe to use and capable of completely meeting the performance requirement of complex required environment of current network topology and meeting the current informatization development demands, and has good environmental benefits and economic benefits.

The invention provides a method and a device for determining an isolation distance between a 5 GHz-band RLAN station and a radar system, and the method comprises the steps: building a network topology structure of the RLAN station and the radar system according to a real deployment condition, so as to simulate signal interference in a real scene. On the basis of deterministic analysis and Monte Carlo simulation calculation, under the conditions of a preset isolation distance, a preset frequency interval, set RLAN station parameters and radar system parameters, simulation operation is carried out, the interference state of an RLAN station to a radar system is judged, and a proper isolation distance is screened out. Simulation is carried out based on various parameters in real conditions, a simulation result meeting the actual conditions can be obtained, construction and deployment of the RLAN station and the radar system are accurately and efficiently guided, the construction efficiency is improved, and the construction cost is saved.

The invention provides a method and equipment for testing high reliability of storage equipment. The method comprises the steps of: building a network topology of a storage environment and a host, andverifying whether IOPS in the storage environment is stable or not and whether output IO of the host is normal or not; in response to stable IOPS and normal host output IO in the storage environment,acquiring specific parameters of the storage environment and the host; drawing a first performance curve graph based on the obtained specific parameters; removing connection of a part of controllersin the storage environment, and acquiring specific parameters of the storage environment and the host again; drawing a second performance curve graph based on the re-obtained specific parameters, andcomparing the second performance curve graph with the first performance curve graph; and in response to consistency of fluctuations of the second performance curve graph and the first performance curve graph, judging that the storage equipment has high reliability. By using the method and the equipment provided by the invention, the high availability of multi-control storage can be verified, the continuity of host IO services when the storage is abnormal can be verified, and the competitiveness and commercial value of products in the market can be improved.

The present invention provides a method for optimization of the configuration of a hierarchical network having a first hierarchical level (LEVEL(j-1)), a second hierarchical level (LEVEL(j) ), and a third hierarchical level (LEVEL(j+1)) immediately below the second hierarchical level, each hierarchical level including nodes (RNC, HUB, RBS) at a level different from the lowest level (eg LEVEL(j+1) Each node in a hierarchical level of 1)) (eg, LEVEL(j-1), LEVEL(j)) receives traffic from a cluster of nodes (HUB, RBS) at the hierarchical level immediately below. The method involves first determining the initial arrangement of nodes (RNC, HUB, RBS) in each hierarchical level different from the highest level, and in each hierarchical level different from the highest level (eg LEVEL(j-1)), Each initial cluster of nodes (RNC, HUB) at that level is assigned to the immediately higher hierarchical level of nodes (RNC, HUB), and optimization iterations are performed until they do not result in a node ( RNC, HUB, RBS) number, arrangement and distribution change.