95 results about "System recovery" patented technology

The invention relates to the field of traffic engineering, and discloses an urban road network toughness management platform and evaluation method based on dynamic cascade failure, and the platform comprises a disturbance scene simulation and random capacity degradation module, a dynamic cascade failure process simulation module, and a multi-dimensional toughness index calculation and uncertainty evaluation module. A toughness three-dimensional vector is formed by integrating system robustness, restorability and performance accumulated loss, and a time-varying dynamic traffic distribution model considering road network structure change is used for depicting a cascade failure dynamic process; a random variable is introduced into a damaged road section capacity index, and a new evaluation method is provided for solving the defect that the existing toughness evaluation method is difficult to comprehensively quantify the robustness and the restorability of a road network. A failure diffusion mechanism in an abnormal scene is truly restored, and an effective method is provided for overcoming the double defects that a traditional model is insufficient in quantification of travel behavior dynamics and a system recovery process.

The invention discloses a power load prediction method, and the method comprises the steps: firstly solving an extreme event data sparsity problem through a generative adversarial network, and constructing an event time sequence library through a time sequence anomaly detection algorithm; then analyzing the causal relationship between the event and the load by applying a causal discovery algorithm, and converting prediction output into probability distribution by adopting a Bayesian neural network to quantify uncertainty; constructing a prediction model triggered by an event, and generating a multi-time scale probability prediction interval; and finally, generating a multi-scene prediction result through Monte Carlo simulation, quantifying the system recovery capability in combination with a toughness index, and integrating the system recovery capability to a decision support system to generate a risk response scheme. According to the method, the accuracy and robustness of load prediction under the extreme climate are remarkably improved, full-chain risk insight from early warning to recovery is realized, and prospective decision support is provided for safe operation of a power system.

The invention discloses a system recovery method and system. The method comprises the following steps: configuring an environment variable partition; network rescue server parameters are pre-stored in the environment variable partition, a first-stage starting command, a second-stage starting command, a third-stage starting command, a network rescue command and a main starting command are defined, and the main starting command initially points to the first-stage starting command; starting for the first time, reading and executing a first-stage starting command from the environment variable partition by the universal boot loader; after execution of the first-stage starting command fails and a system is triggered to be restarted, the universal boot loader reads the updated main starting command from the environment variable partition, and the second-stage starting command and the third-stage starting command are executed in sequence; and when the third-stage starting command fails, the universal boot loader executes the network rescue command, downloads a recovery file from the network rescue server and repairs the system.

The invention belongs to the technical field of power system recovery control, and discloses a power coordination control method of a hybrid energy storage auxiliary black-start system and a related device.According to the method, the total active power requirement of the black-start system is obtained and decomposed into three time scale components of fundamental waves, intermediate frequencies and high frequencies; the power is dynamically distributed to the lithium battery and the super capacitor, the distributed power is corrected based on the temperature, the operation time and the rated parameters, and finally the frequency change rate and the direct-current voltage change rate are calculated according to the actual power instruction and the system parameters so that the controller can output the control quantity. By adopting the method, the contradiction between the energy and the power density of a single power supply is overcome, the response speed and the continuous power supply capability are synergistically improved, the voltage frequency instability risk caused by load input is effectively inhibited, and the reliability and the high efficiency of black start are remarkably improved by perfecting hybrid energy storage coordination control.

The invention relates to the technical field of power system operation and control, in particular to a power system recovery capability evaluation method, device and equipment considering unconventional risks and a medium, and the method comprises the steps: determining parameters for calculating the occurrence probability of earthquake disasters of different earthquake magnitudes; calculating intensity distribution by using an earthquake intensity diffusion model; calculating transmission tower and transmission line fault probabilities to obtain a fault line set; according to the operation power flow and the maximum allowable power flow, the cascading failure situation is divided into high risk and low risk; aiming at the two conditions, respectively enumerating a first-order fault state set and a second-order fault state set to obtain a system recovery capability initial value; the value serves as input, a convergence threshold value is set, a ULBI-IISE algorithm is adopted for iterative calculation, when the difference value of the upper cut set and the lower complementary set is smaller than the threshold value, the recovery capacity and the interval are output, and the method reduces high-order fault complete enumeration and the calculation amount while guaranteeing the precision, and is suitable for rapid evaluation of emergency scenes such as earthquakes.

The invention discloses a server hardware link diagnosis method and a server hardware link diagnosis system, relates to the technical field of computer system fault diagnosis, and discloses the server hardware link diagnosis method and the server hardware link diagnosis system. Through the steps of obtaining a diagnosis rule configuration file, collecting software and hardware state data, carrying out matching analysis to generate a diagnosis path, executing diagnosis processing, carrying out correlation analysis, generating a fault report and the like, the problems of software and hardware diagnosis splitting and path stiffness in the prior art are solved, and collaborative diagnosis and dynamic path generation of software and hardware faults are realized. And the fault positioning accuracy and the system recovery timeliness are improved.

This disclosure describes techniques for a system to share an IP address between computing resources (e.g., between a host server and its management controller), such that a server system may be recovered in the event of a system failure. For example, the host server may send a message to its management controller, such as a baseboard management controller, indicating that the IP address provided to the server system is in use, where the message may be sent at particular time intervals and / or within a threshold period of time. When a failure occurs with respect to the server system, the host server may be unable to send the message at the particular time interval and / or within the threshold period of time. Accordingly, the management controller may be configured to receive, or otherwise recover, the IP address such that the entire server system is accessible and recoverable.

The invention relates to the technical field of vehicle-mounted data processing, in particular to a safety method for instrument alarm icon detection, which comprises the following steps: after a black screen signal is received, an instrument application program receives a fault signal and performs logic judgment on the fault signal to obtain an alarm icon state of the fault signal; the instrument application program sends an alarm icon state of the fault signal to a UI thread and an SOC system adaptation layer; the SOC system adaptation layer forwards the alarm icon state of the fault signal to an SOC MCU, and the SOC MCU forwards the alarm icon state of the fault signal to a screen MCU; the screen MCU receives the alarm icon state of the fault signal and performs state detection so as to determine a mapping decision according to a detection result; and the screen MCU continuously monitors and updates the alarm state, and then resets the monitoring state after the system is recovered. According to the invention, the fault signal processing efficiency is effectively improved.

The invention discloses a two-dimensional layering method for realizing intelligent operation and maintenance of a cloud computing environment, and the method comprises the steps: building an automatic operation and maintenance frame, and dividing the frame into two dimensions, namely a transverse dimension and a longitudinal dimension. According to the two-dimensional layering method for realizing intelligent operation and maintenance of the cloud computing environment, automatic scripts are compiled, repair operation is automatically executed according to specific warning conditions and events, such as service restarting, resource allocation adjustment and construction of a system with a self-healing capability, and automatic self-repair is performed according to a defined strategy when a fault is monitored, so that the two-dimensional layering method has remarkable advantages, and the practicability is high. The system can quickly respond, immediately start repair at the moment of a fault, shorten the system recovery time, reduce the influence of business interruption, quickly restart the fault service, improve the efficiency, save the manual troubleshooting and processing time and enable operation and maintenance personnel to concentrate on more important tasks.

The present disclosure belongs to the technical field of power system restoration, and particularly relates to an orderly black start method and system of a new energy power generation unit, comprising: acquiring system parameters of the new energy power generation unit; constructing a black start system model of the new energy power generation unit based on the acquired system parameters; evaluating the black start capability of the constructed black start system model to obtain a black start utility output of the new energy power generation unit; and optimizing the start order of the new energy power generation unit according to the acquired system parameters of the new energy power generation unit and the obtained black start utility output, combining an orderly participation algorithm to complete the orderly black start of the new energy power generation unit.

The application discloses a kind of high availability methods of double-copy database based on arbitration, comprising: when activated arbitration module is determined that one virtual data node fails by listening to the heartbeat of two virtual data nodes in the double-copy Raft group, another surviving virtual data node is authorized as assigned leader Assigned_Leader, and the Assigned_Leader is independently provided with service in single-copy mode;The virtual data node that fails initiates election according to data volume as the elected standard after recovery online, so that the Assigned_Leader with more data is selected as the leader Leader, and the virtual data node Vnode2 that recovers online is selected as the follower Follower, then the Leader synchronizes the data during failure to the Follower, so that the data of both is completely consistent, so that the system recovers normal double-copy Raft mode.

The invention relates to the technical field of water conservancy project data analysis and intelligent decision making, in particular to a water conservancy project data analysis and processing system and method, and the method comprises the steps: obtaining multi-source heterogeneous data of a water conservancy system; constructing a multi-dimensional spatio-temporal data cube; based on the multi-dimensional spatio-temporal data cube, a toughness state feature vector is constructed, and the toughness state feature vector comprises a parameter used for representing supply-demand balance degree, a parameter used for representing engineering facility robustness and a parameter used for representing system recovery agility; calculating a system toughness entropy index; calculating an entropy change coefficient; based on the system toughness entropy index, identifying the vulnerability of the key path; and combining the entropy change coefficient with the critical path vulnerability to generate an optimal decision suggestion. According to the method, the problem that the influence of local decision on the global situation is difficult to quantify is solved, and the ability of coping with extreme events and complex challenges is systematically improved.

This invention relates to the field of power distribution system resilience enhancement technology, specifically a method for enhancing the resilience of a mobile hydrogen energy storage power distribution system. This method includes data acquisition and parameter initialization; constructing physical constraints for the power-transportation coupled system based on a multi-microgrid reconfiguration strategy; expanding the original typhoon scenario using an enhancement strategy to generate an expanded sample set including wind and solar power output prediction errors; constructing a fuzzy uncertainty set covering multi-source uncertainties; establishing a sub-Bruker optimal scheduling model with the objective of minimizing the overall system operating cost; and performing dual transformation and linearization on the sub-Bruker optimal scheduling model to obtain the trajectory of the mobile hydrogen energy storage vehicle, charging and discharging commands, and the action sequences of distribution network segment switches and tie switches. This invention effectively solves the problems of high difficulty in multi-grid resource coordination and difficulty in accurately obtaining data distribution characteristics under extreme disasters, significantly improving the economic efficiency of post-disaster system recovery and achieving an effective balance between robustness and economy.

The invention relates to the technical field of power system stability control, and provides a new energy black-start partition optimization method considering unconventional risks, which comprises the following steps: simulating unconventional risks possibly encountered by a power system by adopting Monte Carlo sampling; extracting the output characteristics of wind power under the unconventional risk by adopting variational mode decomposition, and performing output prediction in combination with a long-short-term memory neural network; a power system recovery partition is divided based on an LPA algorithm, and the LPA algorithm is improved by considering a partition size balance principle, so that the partition area is more balanced, and the tag oscillation effect is reduced. According to the method, the black-start partition optimization model fusing new energy output uncertainty modeling and unconventional risk scene generation is designed, and the partition scheme is cooperatively solved by adopting the improved label propagation algorithm, so that the robustness and the recovery efficiency of the black-start partition are effectively improved; and rapid and stable power supply of a power system under complex disturbance can be realized.

A cluster storage system including servers containing storage processing units (SPUs) can create synchronized snapshot sets for the volumes that the SPUs maintain and can report the snapshot sets to a cloud-based service. Each snapshot in a set reflects the state a corresponding volume had at a rollback point corresponding to the set. A user of the storage system contacts the cloud-based service about recovery of the storage system, and the cloud-based service may present the user with a list of rollback points corresponding to the synchronized snapshot sets. The user may select to recover the storage system to any of the rollback points, and the SPUs promote the selected snapshots to replace the volumes for storage services.

The invention discloses an automatic fault elimination processing method, device and equipment based on terminal equipment, and relates to the technical field of the terminal equipment, and the method comprises the steps: detecting each started application through a preset fault detection program; when it is detected that the number of times of crash exception of the application exceeds a preset threshold value within preset time, it is judged that the system is abnormal, and the system is controlled to enter a safety mode, the control system automatically disconnects network connection and closes preset system services and processes, and only basic system functions are reserved; displaying prompt information of a security mode, and providing operation options of repairing a homepage, restoring factory settings and contacting customer service; and receiving a user operation instruction, selecting to uninstall the abnormal application and / or selecting to restore factory settings, and completing automatic fault elimination. According to the method, the problem that the system cannot be normally used due to continuous abnormality of the application of the large-screen television system is solved, and a user can recover the system to an available state through simple operation self-service troubleshooting when encountering such faults.

This application provides a method and apparatus for determining a system startup mode. The method for determining the system startup mode includes: storing first data required during system recovery into memory; storing guidance information for retrieving the first data into a first memory, which is not in memory; in response to system startup, obtaining second data based on the guidance information; if the second data meets a preset condition, selecting to restart the system instead of restoring the system; wherein, meeting the preset condition indicates that the second data does not include the first data.

The application discloses a kind of high-voltage substation intelligent monitoring and protection method and system based on cloud edge coordination architecture, and relates to power system control technical field, which comprises: S100: data acquisition;S200: preliminary detection of fault;S300: fault type identification;S400: protection decision;S500: cloud coordination;S600: system recovery.Adopt data hierarchical processing mechanism, guarantee the real-time of key protection function, simultaneously utilize cloud computing capacity to realize advanced analysis.Compared with traditional SCADA system, the cost of the application is reduced by more than 60%, deployment is more flexible, scalability is stronger, and supports fault prediction and preventive maintenance, significantly improves the safety and reliability of high-voltage substation.

To provide a recovery system, a recovery device, a recovery program and a recovery method for enabling a user to restore the control of secret information such as a secret key while reducing the management cost of an organization for managing the secret information.SOLUTION: In a recovery system in which a server device 1 is communicably connected to a user terminal 3 and an institution terminal 4 via a communication network 2 to restore control of security information including a secret key, the user terminal includes a security information generation unit that generates the security information, the server device includes an encrypted security information storage unit that stores encrypted security information obtained by encrypting the security information, and the institution terminal includes a decryption unit that decrypts the encrypted security information.SELECTED DRAWING: Figure 1

The invention discloses a generator tripping control optimization method based on direct-current power compensation and a related device, and the method comprises the steps: aiming at a multi-loop direct-current power transmission system comprising n direct-current power transmission lines with commutation failure and m direct-current power transmission lines without commutation failure, determining actual excess total energy accumulated in the commutation failure period, J lines for direct current compensation, actual compensation total energy and generator tripping offset energy; performing energy compensation on the J lines, and performing generator tripping operation on the n fault lines; and then acquiring system recovery operation data and judging whether a preset recovery condition is met or not, if so, determining the revocation priority and descending order of the J compensation lines, and revoking the J lines according to the order. Therefore, through cooperative execution of direct-current power compensation and generator tripping operation, accurate judgment of a recovery state and ordered revocation of a compensation line, safe and stable recovery of the multi-loop direct-current power transmission system after commutation failure is realized, and the stability of the system is improved.

The present application relates to the technical field of power system operation and control, and discloses a frequency modulation method for energy storage power station under virtual synchronous machine control, wherein the energy storage power station is connected with an alternating current power grid through a virtual synchronous machine control converter, and is composed of a plurality of energy storage units connected in parallel through a common direct current bus; the method executes the following control process: S1, power grid frequency tracking and instruction generation: based on the virtual synchronous machine control converter, the alternating current power grid frequency is perceived, and a primary frequency modulation active power instruction is generated accordingly; the present application takes the direct current bus voltage deviation as a core control variable, and sets up a double-mode dynamic decision mechanism based on the deviation threshold, can quickly identify the disturbance intensity within the millisecond level time when the power grid frequency disturbance occurs, and immediately enters the fast power support mode, realizes the fastest and most sufficient response to the power shortage, thereby significantly improves the lowest point of the frequency, effectively suppresses the frequency drop rate, and shortens the system recovery time.

A computer system, while displaying a representation of a physical environment and a first user interface object, detects a portion of a user at a first location within the physical environment, and in response, ceases to display a first portion of the first user interface object while maintaining display of a second portion of the first user interface object. A representation of the portion of the user is visible where the first portion of the first user interface object was previously displayed. In response to detecting movement of the user from the first location to a second location, the computer system restores display of the first portion of the first user interface object, ceases to display the second portion of the first user interface object, and displays the representation of the portion of the user where the second portion of the first user interface object was previously displayed.

The application discloses a kind of server processor's restart control method and device, storage medium and electronic equipment, it is related to server field, including: the operating state of detection server processor, then according to the operating state of server processor for server processor storage recovery file, subsequently control server processor will first controller be identified as external storage medium, then control server processor will external storage medium as the start item that is preferentially executed in starting process and restart, so that server processor can directly obtain recovery file from first controller when needing to restart, and the execution program contained in recovery file will guide temporary operating system after server processor restart, and temporary operating system can provide the operating environment required for system recovery for server processor, solve the technical problems, such as poor restart reliability of server processor, reach the technical effect of improving the restart reliability of server processor.

The invention discloses a data center liquid cooling system operation control method, device and equipment under a power recovery working condition, and the method comprises the steps: carrying out the power recovery after the power failure of a liquid cooling system, and reading a first system operation parameter stored for the last time before the power failure of the liquid cooling system from a preset operation parameter data block; controlling each system component of the liquid cooling system to operate according to the first system operation parameter, and switching the liquid cooling system to a PID control mode after a preset duration; wherein the operation parameter data block is used for storing current system operation parameters stored according to a preset frequency when the liquid cooling system normally operates. The data center liquid cooling system can be rapidly controlled to recover to the optimal working state under the power recovery working condition, the accuracy and reliability of operation control of the data center liquid cooling system under the power recovery working condition are improved, safe and stable operation of the data center is guaranteed, and the method can be applied to the technical field of liquid cooling.

The application provides a partition method, device and equipment for power system outage recovery and a storage medium. The method comprises the following steps: determining a guarantee area based on the number and capacity of black-start power sources and the starting power of to-be-recovered conventional units and the node load power; including nodes and branches based on the rated power of the to-be-recovered conventional units in the guarantee area to obtain a feasible area; and determining the partition attribution of a new energy station based on the support power provided by the new energy station and the new energy consumption capacity of each partition in the feasible area to obtain an expanded area. The method can improve the execution efficiency of the power system recovery scheme.

The invention belongs to the field of information physical system safety control, and discloses a networked multichannel actuator system safety control method and system. According to the attack-aware adaptive historical weighted event trigger mechanism provided by the invention, a trigger threshold is adaptively adjusted by using weighted historical state information so as to reduce communication overhead, and a shorter sampling period is switched in a defined effective DoS attack interval so as to accelerate system recovery; combining communication delay to construct an effective DoS attack interval model, and establishing a closed-loop system model in a delay and attack coexistence scene; and constructing a Lyapunov functional depending on an effective DoS attack interval, deducing a model-based stability condition, and realizing collaborative design of a safety controller and an event triggering mechanism. According to the method, the system index stability can be ensured under the coexistence environment of the communication delay and the DoS attack only by using the offline data, and the control performance and the communication efficiency are effectively considered.

This application relates to a network security intelligent protection system and method for novel power cyber-physical systems, belonging to the field of power system network security technology. The system consists of a data acquisition and management module, a scenario modeling and topology identification module, a security detection module, a fault simulation and propagation analysis module, an event response module, a system recovery module, and a visualization module. Each module relies on unified data and a coupled scenario model for closed-loop collaboration. The method forms a closed-loop protection process through data standardization, cross-layer coupled scenario modeling, abnormal threat detection, fault simulation, strategy handling, recovery verification, and visualization. This invention achieves multi-source heterogeneous data fusion, network-physical cross-layer modeling, and a closed-loop security protection process, adapting to multiple scenarios such as dispatching master stations, substations / converter stations, and new energy power plants, thereby improving the network security protection, engineering implementation, and operational support capabilities of novel power cyber-physical systems.

The invention belongs to the technical field of airborne embedded computers, and provides a processor starting method based on a dual-redundancy Flash storage architecture, and the method comprises the following steps: configuring a main Flash and a standby Flash which are mutually backed up for a processor, and storing the same bootstrap program for the main Flash and the standby Flash; in the starting process of the processor, sensing the starting state of the processor in real time, and judging whether the bootstrap program of the main Flash is abnormal or not according to the starting state; if the SPI chip selection signal is abnormal, dynamically switching the SPI chip selection signal of the processor to the standby Flash by the FPGA, triggering the processor to reset and restarting from the standby Flash; and after the processor is successfully started from the standby Flash, the bootstrap program of the main Flash is automatically repaired. According to the method, an NVRAM is not needed, all SPI interface processors are adapted, the false alarm rate is lower than 0.1%, the system recovery time is smaller than or equal to 2 seconds, and the starting reliability of the airborne system in the severe environment is remarkably improved.

The application discloses a method for improving transient stability of a network-forming converter in an islanded alternating-current microgrid, and the method comprises the following steps: building a spatial model of the islanded alternating-current microgrid based on a model predictive control strategy, and adding an additional adjustment term in a Q-V loop of a virtual synchronous generator control mode; when a grid-connected converter generates a frequency deviation due to a fault of the microgrid, an electromagnetic torque target function minimization method is used to rollingly optimize the additional adjustment term in the Q-V loop according to angular frequency data at each moment, so that an equivalent input torque and an output torque of the network-forming converter are balanced, and thus the stability of the network-forming converter is restored. The application can effectively reduce the frequency deviation and system oscillation after the fault, significantly shorten the system recovery time, and improve the operation reliability and stability of the microgrid.

The invention discloses an AC / DC hybrid power distribution network reliability evaluation and optimization method, a medium and equipment, and belongs to the technical field of power distribution, and the method comprises the steps: dividing a fault processing process into a fault isolation stage, a topology reconstruction stage and a system recovery stage, establishing a first optimization model by taking the minimum load reduction as the target to determine the disconnection combination of the circuit breaker and the voltage source converter, and establishing a second optimization model by taking the minimum load reduction as the target to determine the operation sequence of the interconnection switch, the standby line and the voltage source converter; and establishing a third optimization model to determine a network topology structure of the AC / DC hybrid power distribution network by taking minimization of load reduction as a target, establishing a power distribution network reliability optimization model to determine an optimal network topology structure of the AC / DC hybrid power distribution network, and performing reliability evaluation. The problems that a traditional Monte Carlo simulation method is low in calculation efficiency and an existing analysis method cannot effectively process the complex topological structure of the alternating-current and direct-current hybrid network are solved.