303 results about "System protection" patented technology

A protective case and mounting system for a handheld electronic device is provided. The protective case can include a removable mounting system comprised of an interlocking member and a plurality of mounting bases. The protective case may further include a non-slip member to prevent the device from slipping on a surface and a magnet for attaching the device to a magnetic surface.

The invention relates to an energy storage system protection method and device, an energy storage system, equipment and a storage medium. The method comprises the following steps: acquiring a first communication state from a monitoring background to a system controller in the energy storage system, a first communication state from each battery management controller to the monitoring background, and a first communication state from each battery management controller to the monitoring background through the system controller; if at least one first communication state indicates that the energy storage system has a communication fault, executing a processing action corresponding to the communication fault; wherein the processing action comprises stopping the operation and maintaining the current state. According to the invention, the risk of information loss can be reduced, and the stability and reliability of the energy storage system are improved.

The invention discloses a flexible direct current power grid wide-area safety protection method and system with accessible network construction equipment, belongs to the field of multi-terminal flexible direct current system protection, and solves the problems that an existing multi-terminal flexible direct current system is complex in protection process, difficult to apply and the like. The flexible direct current power grid comprises a flexible four-end flexible direct current system, two adjacent current converters in the four-end flexible direct current system are connected to form a direct current line, and each direct current line comprises a positive electrode line and a negative electrode line. The method comprises the steps that after a fault occurs, currents of multiple sampling points at the two ends of a positive line and a negative line in each direct-current line in the flexible direct-current power grid are collected, and transverse differential current mutation coefficients of the corresponding sampling points at the two ends of the corresponding positive line and the negative line are obtained through processing; obtaining transverse differential current abrupt change coefficients of the two ends of the corresponding direct-current line according to the transverse differential current abrupt change coefficients of the multiple sampling points of the two ends of the positive line and the negative line in each direct-current line; and according to the transverse differential current abrupt change coefficient of the two ends of each direct current line, whether the corresponding direct current line breaks down is judged, and if yes, fault protection is started.

The invention relates to the technical field of communication equipment operation and maintenance, in particular to a serial port equipment firmware upgrading method and system. The serial port equipment firmware upgrading method comprises the steps that an upgrading task instruction issued by a remote management platform is received, and after equipment identity verification and upgrading file integrity verification are executed, system protection measures are started; creating a security isolation sandbox environment, forbidding a high-risk function module in a script execution environment, and defining addressing parameters of target serial port equipment; standard scripts are loaded, and serial port read-write, file operation and state reporting type security interaction interfaces are injected; calling a mode switching function of the standardized script, so that the serial port equipment is switched to a firmware upgrading mode from an operation mode; cyclically calling a data transmission function of the standardized script to transmit firmware data in blocks, and synchronously implementing timeout monitoring; and after upgrading is completed or abnormal interruption occurs, the security isolation sandbox environment is destroyed, the original business is recovered, and an upgrading result is reported to the remote management platform.

The invention provides a power cooperative control method, device and system based on load removal and a medium. The method is applied to a micro-grid configuration flexible interconnection device for micro-grid fault protection. After the fault is positioned, a VSG low-voltage ride-through strategy is adopted to carry out current limiting, an importance quantification model is constructed for loads, and according to a real-time operation condition, a shearable load with the minimum influence on the system is screened to carry out priority removal; and dynamic power transmission adjustment of the flexible interconnection device is synchronously triggered, a micro-grid power flow path is reconstructed, and finally a fault is removed based on a current limiting and directional element protection method. According to the invention, system protection is realized by fusing intelligent load removal and flexible power adjustment, and the fault isolation speed and the stability of the microgrid system are effectively improved.

The invention discloses a submarine observation network power supply system protection method based on traveling wave extreme value time, and relates to the technical field of submarine power grid protection, and the method comprises the steps: determining the layout position of a protection device according to a network structure, a power supply path and node importance, and dividing a system into protection regions defined by adjacent protection devices; voltage signals are collected in real time, first-order differential processing is carried out, and fault occurrence is judged by comparing the voltage change rate with a preset threshold value; recording current traveling wave data before and after the fault and carrying out Gaussian filtering noise reduction; calculating the extreme value time of the traveling wave by using a differential gradient algorithm; comparing the time difference of traveling wave extreme values on two sides of the protection area to judge the fault direction; judging a fault area in combination with the extreme time and a preset threshold value; and when the forward direction criterion and the intra-region criterion are met at the same time, a protection action is triggered. The method has the advantages that high-reliability fault positioning and rapid isolation can still be achieved under the communication failure scene, and the problem of remote fault and high-resistance fault recognition is effectively solved.

The invention discloses an amino mixed fuel explosion characteristic visualization and explosion suppression coordinated regulation and control system and method, and the system comprises an explosion suppression device which is disposed in a combustion chamber and is in communication connection with a holographic monitoring device and an explosion overpressure real-time prediction model. A graded explosion suppression scheme is set according to the safety early warning grade, so that active intervention of explosion suppression intensity and mode matched with combustion or explosion development stages with different intensities in the combustion cavity is implemented. Therefore, visualization of the mixed gas combustion and explosion dynamic process under the multi-parameter coupling condition can be achieved, and the comprehensiveness and reliability of combustion and explosion research are remarkably improved; through real-time monitoring and intelligent prediction of the explosion process, the explosion process in the device can be rapidly started, the explosion suppression response can be optimized, the explosion development can be suppressed, the integrity and operation safety of an experiment system can be guaranteed, and the intrinsic safety and the system protection capability of the experiment process can be effectively enhanced.

The invention discloses a protection setting calculation and optimization method based on an intelligent power plant management platform, and relates to the technical field of power system protection. By constructing a platform and equipment communication link, integrally collecting and preprocessing internal and external parameters, and dynamically updating topology and model parameters in combination with a switch state, the problem that a traditional static model is difficult to adapt to operation changes is solved, the timeliness and accuracy of the model are improved, a multi-scene database is constructed in a classified mode, labels are labeled, and the efficiency is improved. Fault current distribution is accurately calculated, constant value adaptability verification is carried out, constant value optimization is carried out in combination with a multi-objective optimization algorithm and sensitivity analysis, limitation of single-scene constant values is avoided, constant value conflicts under different scenes are reduced, reliability of initial constant values is guaranteed, sensitivity analysis is superposed, it is ensured that the constant values are still reliable during parameter fluctuation, and the reliability of the constant values is improved. The risk of protection operation refusal and misoperation is reduced, a constant value is issued, the device state is monitored in real time, evaluation indexes are calculated, the constant value is controllable in the whole process, and stable operation of the device is guaranteed.

An illustrative data storage management system comprises a management database that stores administrative preferences and system configurations, as well as results and / or statistics of completed secondary storage operations, i.e., information needed by the system to protect customers' data and to track and recover the protected data, including secondary copies such as backup copies, archive copies, etc. The disclosed data storage management system is configured to protect its own system data subject to a very aggressive (short) Recovery Point Objective (RPO), by using an innovative infrastructure that enables the system's storage manager to fail over to any number of other failover destination storage managers, each one comprising a destination management database. An illustrative database granularly tracks whether each and every transaction log file has been successfully applied to each and every destination management database to synchronize with the source management database.

The invention relates to the technical field of central differential adjustment, in particular to a torque distribution optimization-based central differential dynamic adjustment method, which comprises the following steps of: predicting a driving state based on a vehicle dynamics model and generating a feedforward torque distribution reference instruction; monitoring the rotating speed difference of front and rear drive axles in real time and generating a feedback torque correction instruction; the feedforward instruction and the feedback instruction are superposed to generate a total torque distribution instruction, and a central differential mechanism is controlled to execute inter-axle torque distribution; when it is detected that an individual wheel slips, the control system cooperates with an electronic stability program controller to work, and a total torque distribution instruction is dynamically adjusted by interacting a cooperation request and braking state information so as to achieve accurate distribution of driving torque to the best attached wheel; and meanwhile, the temperature of the multiple clutches is monitored in real time, predictive thermal management control or system protection strategies are executed in a graded mode according to temperature threshold values, and the reliability and durability of system work are ensured.

The invention relates to the field of Linux operating systems, and provides a system hierarchical isolation method and device, equipment and a storage medium. The method comprises the steps that when a temporary root file system configures a system read-write partition, the system read-write partition and a system root partition are mounted to a temporary running directory, and the two partitions are stacked and mounted to a temporary root directory; mounting the temporary partition of the system to the temporary running directory, and jointly mounting and integrating the three partitions again; finally, the mounting points of the three partitions are migrated from the temporary running catalog to the real running catalog, and multi-level system protection and performance optimization are achieved. A root partition of the basic system is kept in a read-only state through a layered isolation mechanism, so that the damage of service operation to a core file is avoided; the temporary data read-write is accelerated by using the temporary running directory, and the read-write operation frequency of a physical disk or a bottom storage device is reduced; the read-write partition of the system independently stores modified data during operation, and it is ensured that the data are not lost after restarting.

The invention discloses an evaluation method and device for a breaking result of a high-voltage SF6 circuit breaker, electronic equipment and a storage medium, and belongs to the field of power system protection, and the method comprises the steps: obtaining a reference arc extinguishing peak voltage and a reference contact opening distance of the high-voltage SF6 circuit breaker; obtaining a to-be-measured arc extinguishing peak voltage and a to-be-measured contact opening distance of the high-voltage SF6 circuit breaker; calculating the ratio of the to-be-measured arc extinguishing peak voltage to the preset power of the to-be-measured contact opening distance, and generating a to-be-evaluated index value; calculating an on-off evaluation critical value according to the reference arc extinguishing peak voltage, the reference contact opening distance and a preset critical value coefficient; and judging whether the to-be-evaluated index value is greater than the cut-off evaluation critical value, if so, judging that the predicted cut-off result is successful, and if not, judging that the predicted cut-off result is failed. Therefore, by implementing the invention, the problem that electric breakdown failure and successful breaking cannot be distinguished due to similar voltage characteristics in the prior art can be solved.

The invention discloses an AC-DC power grid intelligent scheduling and protection control method, system and device and a medium, and belongs to the technical field of intelligent power grid operation control, and the method comprises the steps: constructing an AC-DC cooperative scheduling model, dynamically predicting new energy output and load demands, and generating a coordination instruction; establishing a multi-stage linkage protection framework based on a scheduling result, and defining alternating current and direct current system protection collaborative logic; integrating the heterogeneous operation data of the AC / DC system to construct a unified analysis model; a dynamic power flow distribution strategy is optimized in a rolling mode through a deep reinforcement learning algorithm; according to the real-time operation state, dynamically correcting protection parameters and triggering edge side fault quick response; and a closed-loop technical link is formed, and a preorder result drives a subsequent action, so that self-adaptive coordination of scheduling, protection and control is realized. According to the invention, through an AC / DC cooperative scheduling and multi-stage protection architecture, in combination with a deep reinforcement learning algorithm and a dynamic protection mechanism, a "scheduling-protection-control" three-dimensional decision-making system is constructed, and the stability of a power grid is improved.

The invention belongs to the technical field of ship power engineering, and particularly discloses an external steam supply system for a steam turbine thermal state test, which comprises a gas supply unit, a steam-water separation unit, a temperature and pressure reduction unit, an exhaust unit and a gas utilization unit, the steam-water separation unit and the gas supply unit are connected through an initial gas supply pipeline; the steam-water separation unit is connected with the gas utilization unit through a gas utilization pipeline, and the temperature and pressure reduction unit is arranged on the gas utilization pipeline and is close to the gas utilization unit; the exhaust unit is connected in parallel with the gas utilization unit through an exhaust pipeline; the steam dryness is guaranteed through the steam-water separation unit, accurate control over terminal parameters is achieved through the temperature and pressure reduction unit, flow adjustment and system protection are provided through parallel exhaust of the exhaust unit, the steam supply problem of a steam turbine thermal test in the ship mooring test stage is successfully solved, and the steam supply efficiency is improved. And the safety of the steam turbine is effectively protected.

The invention discloses an energy management method and device for an LED street lamp photovoltaic energy storage system, and the method comprises the steps: obtaining the output characteristic data and environment illumination data of a photovoltaic module of the energy storage system, and carrying out the energy conversion optimization, and obtaining the electric energy information; acquiring a charge state of a first energy storage unit of the energy storage system based on the electric energy information, executing three-stage electric energy storage to obtain a current energy storage state, and activating a second energy storage unit of the energy storage system; according to the current energy storage state and the environment illumination data, the power supply proportion of the first energy storage unit and the second energy storage unit is dynamically allocated, and an LED street lamp illumination instruction is generated; and through the LED street lamp illumination instruction, monitoring a power supply loop in real time, carrying out energy supply cooperative matching, and outputting a system protection instruction. The dynamic stability problem of the system under the complex working condition can be solved, and the operation reliability of the system under the continuous cloudy and rainy or extreme temperature condition is improved.

The invention provides a digital main line processing method based on an industrial data atlas, a medium and a system, and belongs to the technical field of the industrial data atlas. Unified access of cross-system data is realized by constructing a multi-source data acquisition adapter, cleaning and standardization processing are performed on heterogeneous data, an integrated data set is constructed, and the data collection efficiency is improved. Data entities are abstracted as nodes, cross-system association relationships are abstracted as edges to construct an industrial data graph, a graph index optimization strategy and a hierarchical storage architecture are adopted to improve cross-system query performance, a graph adaptive evolution model is utilized to realize dynamic adjustment of a graph structure, and a cross-system deep association analysis function is realized through a graph traversal algorithm. And an access control and data security mechanism is established to complete system protection, so that the technical problem that the industrial data processing system is difficult to realize cross-system deep correlation analysis is solved.

The invention discloses a battery cluster short circuit rapid identification method and device based on voltage sag. The method comprises the following steps: acquiring a total voltage real-time value of a battery cluster in a current detection period; calculating an inter-frame total voltage change real-time value of the battery cluster based on the total voltage historical value of the battery cluster in the previous detection period; judging whether the inter-frame total voltage change real-time value is greater than or equal to a preset voltage abrupt change threshold value or not; and if yes, judging that the battery cluster has a short-circuit fault, and triggering a protection action. The inter-frame change of the total voltage of the battery cluster is monitored in real time and compared with the preset threshold value, millisecond-level rapid identification and protection of the full-range short-circuit current are achieved, and the technical problem that in an existing energy storage system protection system, due to the inverse time limit characteristic of a circuit breaker and the BMS delay criterion, medium and low short-circuit current cannot be rapidly cut off is effectively solved.

The invention discloses a multi-terminal traveling wave fault positioning method, system and device of a branch type power distribution network and a medium, and relates to the technical field of power system protection and control, and the method comprises the steps: constructing a static topological graph of a power grid, and constructing a reference node distance matrix; collecting traveling wave signals of the monitoring points; performing empirical mode decomposition on the acquired traveling wave signal to decompose the traveling wave signal into an intrinsic mode function component; screening all the intrinsic mode function components, selecting an optimal intrinsic mode function component, and executing Hilbert-Huang transform to lock the arrival time of the traveling wave head; calculating the distance difference between the fault point and each monitoring point, and constructing an average fault distance difference matrix; and constructing a fault branch judgment matrix based on the average fault distance difference matrix and the reference node distance matrix. According to the method, the problem that a traditional impedance method is highly sensitive to line parameters and transition resistance is solved, and the defect that a single-end traveling wave method is prone to generating positioning ambiguity in a branch network is overcome.

The invention relates to a domestic trusted dual-system protection method and system oriented to industrial control, and belongs to the technical field of industrial control security, and constructs a dual-system architecture based on hardware isolation: a domestic operation subsystem executes service logic, and a protection subsystem realizes independent security control through a TCM / TPCM trusted root. And the protection subsystem has a one-way access permission to form a hardware-level protection barrier. When the system is started, UBoot, a kernel and an application program are measured step by step through a TPCM chip, and a trusted chain is constructed; during operation, the active monitoring module calculates a process hash value in real time, compares the process hash value with the reference library, and executes security policies such as process termination / network blocking. The executable file, the network port and the source IP access control are covered by adopting a white list technology of encrypted signature. The full-period active protection of the terminal from starting to running is realized, the defect that a traditional scheme depends on kernel safety is overcome, the safety and reliability of a system are remarkably improved, and the requirement of an industrial control system for protection 2.0 is met.

The present disclosure herein addresses the problem of data security and privacy by providing a system and method for preserving privacy and security of enterprise data for generative artificial intelligence enabled applications. The system of the present disclosure enables removing all personal identifiable information (PII) and sensitive data by masking them in outgoing data keeping meaning of context and instructions same. A masked output is obtained as a response from external models. The response is further unmasked and an actual output is obtained for an end user. In this way, the system of the present disclosure protects an enterprise data from going out and keeps them secure and confidential. The system of the present disclosure also takes care of prompt injection, checks for truthfulness of the answers based on a given context, checks for malicious code in external model response and performs model scanning for not being compromised.

1. The name of this design product: outdoor control system protection box. 2. Purpose of this design product: used to protect electronic components inside the box. 3. The key design point of this product lies in the overall shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

The utility model discloses a terrestrial magnetism acquisition device, and belongs to the field of instruments and meters. A shell of the geomagnetic acquisition device is of a cylindrical sleeve structure and comprises a top cover, a middle section and a bottom cover. The battery is arranged between the bottom cover and the middle section; the bracket is arranged above the battery and is positioned in the top cover; the PCB is arranged on the bracket and is connected with the battery; the geomagnetic sensor is arranged on the PCB and is used for collecting geomagnetic signals; the communication unit is arranged on the PCB and used for outputting geomagnetic signals. A cylindrical sleeve structure is adopted to improve the system protection level and facilitate mounting and dismounting; the low-power-consumption design ensures that the long-term outdoor working time is more than 10 years, and the maximum power consumption during working is only 2mA; the geomagnetic sensor collects magnetic field data in real time, the magnetic field data is processed by the communication unit and then output and uploaded to the cloud, efficient collection and transmission of the geomagnetic data are achieved, and the overall performance of the system is improved.

The invention discloses a series multi-terminal extra-high-voltage direct-current power transmission system and a no-load pressurization test method, which are applied to the technical field of high-voltage direct-current power transmission system protection, and at least comprise a plurality of converter stations and a plurality of direct-current lines, including one or more converter stations at a rectification side and one or more converter stations at an inversion side, for a plurality of converter stations which belong to a rectification side or an inversion side at the same time, any two adjacent converter stations are connected in series through a direct-current line, and by combining isolating switches arranged at the high-voltage sides and the low-voltage sides of the converter stations, independent no-load pressurization tests can be carried out on part of or all equipment, direct-current lines and the like in the converter stations which are connected in series. Moreover, the operation of a non-test part in the multi-terminal direct current system is not affected, and the problem that a no-load pressurization test cannot be independently carried out after a single converter station is overhauled and before the single converter station is put into operation again is effectively solved.

This invention discloses a protection and control method and system for a high-pressure feedwater pump system during the start-up and shutdown process of a gas turbine unit, belonging to the field of intelligent control of gas turbine units. It includes a first subtraction module, a first less than comparison module, a second less than comparison module, a third less than comparison module, a first quality judgment module, a second quality judgment module, a first NOT module, a second NOT module, a third NOT module, a first AND module, a second AND module, a third AND module, a fourth AND module, a first delay module, a second delay module, a third delay module, and a first OR module. The main functions of this invention include: achieving adaptive protection throughout the start-up and shutdown process, multi-system collaborative control, improving the safety and reliability of pump unit operation, reducing the intensity of manual intervention, and adapting to the operational needs of frequent start-up and shutdown and rapid load changes of the unit.

The invention belongs to the technical field of direct current system protection, and particularly discloses a two-out-of-three protection topological structure and method for a direct current system. Comprising a protection case and a valve control module, the protection case comprises a first protection case, a second protection case and a third protection case; the valve control module comprises a first valve control module and a second valve control module; the output end of the first protection case is connected with the input end of the first valve control module and the input end of the second valve control module through a control bus. The output end of the second protection case is connected with the input end of the first valve control module and the input end of the second valve control module through a control bus. The output end of the third protection case is connected with the input end of the first valve control module and the input end of the second valve control module through a control bus. The three protection cases are connected with the two valve control modules, so that the problem that the direct current system is difficult to protect in time when the protection cases or the valve control modules fail is avoided, and the safety and reliability of the protection system are effectively improved.

The application provides a primary and secondary system auxiliary decision-making method based on a system protection fault scene, comprising the following steps: obtaining a communication channel existing fault from a database, and storing the communication fault and the device fault into a power system protection typical fault scene library; matching and checking the power system protection typical fault scene with a power system expected fault scene, and judging whether the risk of the power system protection typical fault scene is acceptable; if the risk of the power system protection typical fault scene is not acceptable, then reselecting other routing paths through the secondary side system; if a suitable other routing path cannot be selected, then adjusting an emergency control strategy through the secondary side system to find a new feasible strategy; if the new feasible strategy cannot be found, then adjusting an auxiliary decision-making through the primary side system until the risk is acceptable, and the application realizes the effective cooperation between the primary and secondary systems for the auxiliary decision-making and improves the protection capability.

The application discloses a method for digital storage of relay protection setting value single, which comprises the following steps: combing the style of a PDF setting value single, making different analysis templates, converting table data in the PDF into JSON array data, storing the distance of each upper left corner, i.e. latitude and longitude, the width and height of each itself and the grid content in the JSON data, obtaining corresponding data through position characteristics, and performing structured storage. Through the digital storage of the protection setting value single, the application verifies the correctness of the protection setting value of the relay protection setting system and the protection signal system, so as to ensure the consistency and accuracy of the setting value between the systems.

The invention discloses a water-rich karst stratum earth pressure balance shield tail sealing system protection method, which is characterized in that a metal fender (7) tool is designed below a connecting bridge (4) to form a movable slag collecting pit (8), pumped foreign matters are prevented from flowing to a shield tail along with sewage, and the water-rich karst stratum earth pressure balance shield tail sealing system is protected. The trolley (5) synchronously moves forwards when the track extends, a vacuum slag suction tank (9) is arranged on the trolley (5), sludge in the area of the trolley (5) is sucked into the sludge tank through negative pressure, and then the sludge is conveyed to a belt conveyor (6) from the other end to be conveyed out of a tunnel; a metal and rubber combined fender (7) is designed in a shield tail area to prevent shield tail sludge from entering a shield tail brush, the metal and rubber combined fender (7) is installed on the end face of a duct piece (3) and fixed through a main jacking oil cylinder, cleaning is conducted through a sludge pump and manual work before assembly, after the shield tail area is cleaned up, a retraction oil cylinder is used for synchronously removing the fender (7), and after the duct piece (3) is assembled, reinstallation is conducted to enter the next cycle operation.

The application is suitable for the technical field of switching power supply, and provides a Buck converter with double-mode switching. The application realizes system protection function and low-power mode by adding a HVT (High Voltage Threshold) module to control the conduction and turn-off of the power tube in a loop. The HVT module compares the output feedback voltage VFB with the reference voltage Vref, can quickly turn off the upper and lower power tubes in the soft start stage, effectively avoids the chip from burning due to the transient overvoltage of the system, turns off the power tube to reduce the conduction loss and start the low-power mode in the PFM mode, and can turn off the upper power tube and turn on the lower power tube to release the excess current in the loop and prevent the backflow phenomenon when triggering the current limiting ILIM mechanism. The application realizes the double-mode switching control strategy of the Buck converter in the heavy load PWM and the light load PFM, improves the overall working efficiency, effectively improves the stability of the converter, increases the ECO (energy saving) mode, and reduces the system power consumption.

The embodiment of the invention provides a motor torque monitoring method and device, equipment and a medium, and relates to the technical field of vehicles. The method comprises the following steps: in a first processing unit in a motor controller, obtaining a functional layer estimation torque through an electromagnetic torque algorithm based on a three-phase current signal; in a second processing unit in the motor controller, a safety layer estimation torque is obtained through a power torque algorithm based on the bus voltage signal and the bus current signal, and the first processing unit and the second processing unit are physically isolated; and determining the state of the torque based on the comparison of the estimated torque of the motor function layer and the estimated torque of the safety layer, and executing a corresponding system protection strategy based on the torque state. According to the method, the problem that the vehicle safety is affected due to the fact that torque monitoring is prone to misalignment when equipment abnormity or working condition abnormity occurs in motor torque monitoring in the related technology is effectively solved.