29 results about "Cold standby" patented technology

The invention relates to the technical field of offshore wind power, in particular to a middle-long distance offshore wind power low-frequency combined power transmission system and an operation mode thereof, and the system comprises an M3C converter and a control system thereof, an M3C converter operation state change-over switch group, and an M3C converter energy consumption switch and an energy consumption resistor R1; the motor and generator coaxial M-G equipment and a control system thereof, an M-G equipment operation state change-over switch group, and an M-G equipment energy consumption switch and an energy consumption resistor R2; through switching of an M3C converter operation state change-over switch group, an M3C converter energy consumption switch, an M-G equipment operation state change-over switch group and an M-G equipment energy consumption switch, multiple operation states including at least maintenance, cold standby, hot standby, connection, operation and energy consumption are realized, and switching among the operation states is realized according to the access condition of a power grid and new energy. The method can provide stable supporting capacity for a power grid, and helps to solve the problems of offshore wind power integration and efficient absorption.

The invention discloses a redundancy control device and system for a valve actuating mechanism of a pneumatic isolating valve, and belongs to the technical field of industrial automation and process control. The device comprises a triple gas source supply system which comprises a main gas source, a standby gas source A and a standby gas source B adopting a high-pressure gas storage tank; the distributed intelligent control module comprises a main controller, a hot standby controller and a cold standby controller and adopts a 2oo3 voting mechanism; the triple modular execution mechanism system comprises an electro-pneumatic execution unit, a pure pneumatic execution unit and a mechanical standby execution unit; the invention discloses a self-adaptive fault diagnosis and recovery system. The control system comprises an intelligent self-learning system, an undisturbed switching control system and the like, and has a layered software architecture and a multi-level control strategy. Multiple redundancy is achieved, the reliability of extreme conditions is improved, fault prediction is accurate, response is fast, switching disturbance is small, the method adapts to working condition changes, and the safety and the intelligent level of the system are improved.

The invention discloses a distributed database load balancing and disaster recovery backup method, relates to the technical field of databases, and solves the problems that when a distributed database is used, a disaster recovery backup node is usually in a cold standby state and does not work, the resource utilization rate is low, waste is caused, and the disaster recovery backup node cannot be combined with load balancing for cooperative use. A distributed database load balancing and disaster recovery backup method comprises the following steps: collecting multi-dimensional performance indexes of all nodes in a distributed database cluster in real time, and constructing a global dynamic metadata view; according to the method, the health state of the cluster is continuously monitored, when the fault of the node or the data center is detected, the disaster recovery switching process is automatically triggered, and the role of the specified disaster recovery backup node is promoted to be a new main node, so that disaster recovery resources and cost are reduced, the disaster recovery backup node is kept in a hot standby state, and the disaster recovery efficiency is improved. Direct operation is facilitated, and the situation that the starting time needs to be responded when the device needs to be used is prevented.

The invention discloses a train control on-board subsystem reliability analysis method, system, equipment and medium, and relates to the technical field of reliability analysis, and the method comprises the steps: carrying out the modeling of the service life of an on-board equipment unit based on Weibull distribution; for a cold standby structure of the vehicle-mounted equipment, an active switching strategy is adopted to switch a main system and a standby system, and the influence of the active switching strategy on unit reliability is quantified through a virtual age; considering the influence of the common cause failure on the redundant structure, and modeling the common cause failure by using a beta factor model; the influence of personnel operation on the system reliability is considered, the success probability of personnel operation is analyzed, and the unit reliability is calculated; and establishing a random Petri net model of the vehicle-mounted system, performing simulation by adopting a Monte Carlo method, and generating system life data and system reliability parameters. According to the method, the action mechanism of active switching for improving the reliability of the system is analyzed, common cause failure and human cause are considered, and the reliability of the system can be improved by improving the reliability of the cold standby unit.

The utility model provides a one-key sequential control controller. The one-key sequential control controller comprises a shell and a control circuit board, the shell comprises an upper shell body and a lower shell body, screw openings of the fixing screws are arranged on the front face of the upper shell body and the bottom face of the lower shell body, and the upper shell body and the lower shell body are fixed together through the screws. And the control circuit board is arranged in the shell and is used for operating and controlling the circuit breaker, the handcart and the grounding switch. The device has a local operation mode and a remote operation mode, and can automatically complete the operation of the circuit breaker, the handcart and the grounding knife switch according to an input instruction; meanwhile, the switch operation of the switch cabinet is controlled to be in the working state required by the input instruction, such as operation, hot standby, cold standby and maintenance.

The invention belongs to the technical field of aviation aircraft design, and particularly relates to a multi-mode power supply dual-redundancy cold standby type liquid cooling airborne system, method and medium, the system comprises liquid cooling pumps, a radiator, a power supply bus bar, time service equipment and a controller, the liquid cooling pumps comprise a liquid cooling pump 1 and a liquid cooling pump 2, inlets of the liquid cooling pump 1 and the liquid cooling pump 2 are connected with liquid cooling electronic equipment, and inlets of the liquid cooling pump 1 and the liquid cooling pump 2 are connected with the controller; outlets of the liquid cooling pump 1 and the liquid cooling pump 2 are connected with the radiator, the radiator is connected with the liquid cooling electronic equipment, the power supply bus bar comprises a power supply bus bar 1 and a power supply bus bar 2, the power supply bus bar 1 supplies power to the liquid cooling pump 1 through the circuit breaker 1, the power supply bus bar 2 supplies power to the liquid cooling pump 2 through the circuit breaker 2, and the power supply bus bar 1 and the power supply bus bar 2 are connected with the controller. The liquid cooling pump 1, the liquid cooling pump 2 and the liquid cooling electronic equipment are all connected with the controller; the time service equipment is connected with the controller; the system self-adaptive capability and task reliability of the dual-redundancy cold standby type environment control liquid cooling system in different power supply modes are improved, the heat dissipation requirement of the liquid cooling electronic equipment in a flight task is guaranteed as much as possible, and the system reliability of an aircraft when the different power supply modes are switched back and forth is guaranteed.

Examples of the present disclosure provide a data transmission method and apparatus, a device and a medium, which relate to the technical field of communication, and is applied to a first gateway device included in a first site, wherein the method includes sending a first data stream to a second site through a first tunnel group, wherein the first tunnel group includes tunnels between the first gateway device and gateway devices included in the second site passing through a first WAN; in response to determining that all of the tunnels included in the first tunnel group are abnormal, sending the first data stream to the second site through a second tunnel group, wherein the second tunnel group includes tunnels between the first gateway device and the gateway devices included in the second site passing through a second WAN, wherein a priority of the second WAN is lower than that of the first WAN. By applying the technical solution provided by the example of the present disclosure, a control granularity of a silent setting in a cold standby technology can be reduced.

A ground control device redundancy system (1) that controls the operation of a train together with an interlocking device (2) comprises a ground control device (10), a ground control device (20) that constitutes a hot standby dual system together with the ground control device (10), a ground control device (30) that stands by in a cold standby state in which the power is off while the ground control device (10) and the ground control device (20) are operating normally, and a control circuit (40) that performs control to turn on the power supply of the ground control device (30) when the ground control device (10) or the ground control device (20) fails. When the power is turned on, the ground control device (30) takes over information used in the failed ground control device (10) or ground control device (20) and starts operating.

The invention provides a distributed energy regulation and control method and system based on a wired and short multiplexing communication mode, and the method comprises the steps: enabling a distributed energy regulation and control service terminal to transmit power distributed energy regulation and control service data to a regulation and control master station system server through a wired access mode and a short multiplexing access mode; the two access modes are cold standby modes and have a seamless switching function; according to the invention, the transmission of the distributed energy regulation and control service is realized by adopting a wired and short multiplexing combined mode, two safe and reliable communication modes of wired and short multiplexing are combined together, and the advantages of the two communication modes can be played at the same time; the method has the characteristics of stable and reliable optical fiber channel, shortest-stroke public network segmentation of a short multiplexing channel, minimum link renting and maximum utilization of isolation pipeline connection provided by an own power transmission network, so that the distributed energy regulation and control service terminal has a standby channel during data transmission, automatic switching can be realized, and the reliability of the channel is ensured.

The application belongs to the field of gas compression stations and discloses a lubricating oil system control method and device for a compressor unit and a readable storage medium. The lubricating oil system control method comprises the following steps: in the process of starting the compressor unit, the lubricating oil system automatically switches from a cold standby state to a hot standby state; when the compressor unit is in the hot standby state, the lubricating oil system selects different cooling working durations according to the working condition of the compressor unit before shutdown; and after the compressor unit is shut down, the lubricating oil system automatically switches to use the first oil pump or the second oil pump according to the oil pump switching condition and the oil pump working duration. The lubricating oil system control method avoids manual starting and human errors, shortens the waiting duration for restarting the compressor unit, and thus solves the problem of unreasonable lubricating oil system control methods for the compressor unit, and achieves the effects of reducing human operation factors, improving the degree of automation, and improving the operation efficiency of the compressor unit.

Traditional hot standby and cold standby systems have problems such as high operating costs, high energy consumption, or delayed disaster recovery. While these systems provide server redundancy, they present challenges from an economic and efficiency standpoint. [Solution] The centralized standby system of the present invention is compatible with on-premises and cloud environments and reduces operating costs and energy consumption by efficiently managing multiple systems centrally. The system includes a mechanism for a backup unit to start operating immediately in the event of a failure, minimizing overall system downtime. Furthermore, by utilizing the host OS, container orchestration tools, and container engine to monitor the system and collect and analyze data, the system improves responsiveness in the event of a failure.

The invention discloses a vehicle-mounted signal system vehicle control right switching method, device and equipment and a storage medium, and the method comprises the steps: when a vehicle control vehicle-mounted signal system is an ETCS vehicle-mounted signal system, a vehicle-mounted signal system of a to-be-controlled vehicle is a national vehicle-mounted signal system, and the vehicle control function of the national vehicle-mounted signal system is determined to be normal, switching the vehicle control right of the to-be-controlled vehicle to the ETCS vehicle-mounted signal system; a cold standby state machine command is sent to a national vehicle-mounted signal system, and first cold standby response information is received; after it is detected that the ETCS vehicle-mounted signal system receives a conversion command, a hot standby state machine command is sent to the national vehicle-mounted signal system according to the first cold standby response information, and hot standby response information is received; after it is detected that the ETCS vehicle-mounted signal system receives the secondary conversion command, a data effective state machine command is sent to the national vehicle-mounted signal system according to the hot standby response information, and the vehicle control right is switched from the ETCS vehicle-mounted signal system to the national vehicle-mounted signal system according to the received data effective response information.

This invention relates to the field of industrial control automation technology, and particularly to a multi-entity, multi-level redundancy control method and system, comprising: S1: A control entity cluster periodically sends master-slave negotiation messages, and the control entities are divided into master control entities, hot standby control entities, and cold standby control entities according to the master-slave negotiation messages; S2: The master control entity and the hot standby control entity generate redundant data object information and synchronize the redundant data object information to the data user entity in real time; S3: The data user entity receives the redundant data objects sent by the master control entity and the hot standby control entity, and selects the redundant data object k1 generated by the master control entity first according to the data object role identifier. If k1 is invalid, the current master control entity is released, and the hot standby control entity is switched to the master control entity to ensure the ratio of master control entities to hot standby control entities. This invention ensures seamless switching of control entities, realizes effective data element replacement, and improves redundancy reliability.

The invention relates to a redundancy control system, belongs to the technical field of redundancy control, and solves the problem that an existing control system is poor in reliability. The system comprises a main bus, a standby bus and at least one backup controller group, wherein each backup controller group comprises a main controller, a hot backup controller and a cold backup controller; wherein the main controller, the hot standby controller and the cold standby controller are respectively in communication connection with the main bus and the standby bus; the main controller is connected with the hot backup controller through a first signal line; the hot backup controller is connected with the cold backup controller through a second signal line; the hot backup controller controls on-off of a first switch between the main controller and the low-voltage power supply according to the state of the main controller, and the cold backup controller controls on-off of a second switch between the hot backup controller and the low-voltage power supply according to the state of the hot backup controller. According to the invention, by setting a multi-level backup mechanism, the reliability of the system is improved.

The invention discloses a resource management method, a resource management device, electronic equipment and a storage medium, and relates to the technical field of computers. The resource management method comprises the steps that the preset resource information of the bus equipment of the current server is written into the storage unit when the current server is in the cold standby state, and the risk of tampering the preset resource information in the server power-on process is reduced. When the server is powered on, the basic input and output system can obtain preset resource information through the programmable controller mounted on the storage unit and compare the preset resource information with initialized data formed by the preset resource information, so that whether the power-on process is reliably configured or not can be verified, and reliable pre-storage and reliable obtaining of the resource information are achieved. The technical problems that the transmission of the resource allocation strategy is unreliable and whether the server is reliably powered on or not is difficult to verify are solved, and the technical effects of improving the transmission reliability of the preset resource information and improving the startup and operation reliability of the server are achieved.

The invention provides an LEU intelligent test system, and belongs to the technical field of railway signal equipment detection, and the system comprises a man-machine interaction module which is used for receiving an LEU manufacturer model selection instruction and a test case configuration instruction inputted by a user; the S interface communication module is used for establishing communication connection with an S interface of the LEU to be tested to realize transmission of a test message; the self-adaptive C interface processing module switches a load resistor according to the load configuration instruction and separates C1 and C6 signals; the A interface radio frequency module is used for activating a transponder and receiving an FSK modulation signal, and an uplink message is recovered through amplification, filtering and demodulation processing; and the main control module is used for operating an RSSP-I security communication protocol stack to simulate a TCC to generate a full-true message, performing comparative analysis of message sending and message receiving, and outputting a test result to judge whether the message receiving, processing and signal output functions of the standby LEU are normal or not, so that the problem that hidden faults are not found due to long-term cold standby of the standby LEU is avoided.

The invention discloses a multi-time-scale medium-and-long-term standby allocation method and device for a power system, terminal equipment and a storage medium, and belongs to the field of power systems. The method comprises the following steps: reconstructing according to time sequence load data to obtain a continuous load curve; clustering the new energy output data corresponding to each segment of time sequence load data to obtain a new energy output scene probability; on the basis of the continuous load curve and the new energy output scene probability, calculating the new energy output scene probability according to the unit operation parameters, the unit operation cost data and the new energy output data; constructing a medium-and-long-term operation simulation model, a first model constraint and a second model constraint of the power system by taking the sum of the power system operation cost, the load loss risk and the new energy abandoned electric quantity as a target; and calculating hot standby and cold standby of the power system according to the operation state variable of the power system obtained by solving the model, and distributing the standby of each load section in each preset time period of the power system. By implementing the invention, the problem of inaccurate standby allocation in the prior art is solved.

The invention relates to the technical field of wind power hydrogen production, and discloses a wind power prediction-based wind power hydrogen production electrolytic cell control scheduling method, which comprises the following steps of: acquiring working characteristic parameters of an electrolytic cell, the working characteristic parameters comprising single-cell cold start power, single-cell maximum operation power, single-cell minimum operation power and single-cell cooling time; the current real-time wind power and the average wind power predicted value in the next N hours are obtained, and N is smaller than or equal to the single-groove cooling time; obtaining the number of running-state electrolytic cells, the number of hot-standby-state electrolytic cells and the number of cold-standby-state electrolytic cells; calculating the required number of electrolytic cells according to the average wind power predicted value in the next N hours; determining the number of electrolytic cells needing cold start according to the required number of electrolytic cells, the number of operating-state electrolytic cells, the number of hot-standby-state electrolytic cells and the number of cold-standby-state electrolytic cells; according to the method, it is guaranteed that when high wind power arrives, enough electrolytic cells can absorb the wind power.

The application discloses a kind of self-calibration sensor devices based on cold backup redundancy, including power module, power module is connected with power timing switching module, sensor interface module, A / D conversion module, calibration module, signal output module and fault processing module;Wherein one sensor interface module is connected with main sensor, another sensor interface module is connected with backup sensor.The application adopts the precision self-calibration mode of main sensor and backup sensor, periodically enable backup sensor, compare the sampling value of main sensor and backup sensor by calibration module, judge whether the precision deviation of main sensor sampling value meets the precision requirement, if not satisfied, then use backup sensor and alarm to remind operation and maintenance personnel to replace, if normal, then continue to work using main sensor.The application can effectively solve the precision deviation of sensor with time in existing sensor application scene, so as to cause the use precision to not meet the requirement, need to replace the problem of inspection.

The application discloses a water power station unit automatic operation process from cold standby to maintenance and drainage to a volute and tail horizontal pressure monitoring system, which comprises receiving a start order; sending a quick closing instruction to a unit water inlet quick door; sending a full opening technical water supply positive and negative water supply valve instruction to a unit technical water supply control cabinet; sending a full opening pressure reducing valve inlet and outlet valve instruction to the technical water supply control cabinet; sending a full opening technical water supply filter inlet and outlet valve instruction to the technical water supply control cabinet; sending a generator outlet switch from cold standby to maintenance instruction to the unit; sending a generator and transformer group outlet switch from cold standby to maintenance instruction to the unit; and ending the operation process after detecting that the unit technical water supply total flow is less than 50m³ / s. The application improves manual step-by-step operation into an automatic operation process, avoids system live grounding or equipment damage caused by equipment lockout failure, ensures the accuracy of the whole operation process, ensures the safety and stability of the power grid, improves work efficiency and saves human resources.

The invention belongs to the technical field of aviation aircraft design, and particularly relates to an airplane dual-redundancy cold standby type liquid cooling pump main-standby selection control system and method and a medium. The system comprises a liquid cooling pump, a radiator and a controller, the liquid cooling pump comprises a liquid cooling pump 1 and a liquid cooling pump 2, and inlets of the liquid cooling pump 1 and the liquid cooling pump 2 are both connected with liquid cooling equipment; outlets of the liquid cooling pump 1 and the liquid cooling pump 2 are connected with the radiator, the radiator is connected with the liquid cooling equipment, the controller comprises a controller A and a controller B, partition software modules and memory areas are arranged in the controller A and the controller B, and the partition software modules read or write storage information into the corresponding memory areas; the partition software modules in the controller A and the controller B are connected, and the partition software modules of the controller A and the controller B are both connected with the liquid cooling equipment; the partition software module of the controller A and the partition software module of the controller B are respectively connected with the liquid cooling pump 1 and the liquid cooling pump 2 in a one-to-one correspondence manner; the system further comprises ground maintenance equipment, and the ground maintenance equipment is connected with the partition software modules of the controller A and the controller B; the purpose that the environment control liquid cooling system with the dual-redundancy cold standby architecture uses the liquid cooling pump different from the liquid cooling pump of the last flight sortie at the flight sortie is achieved.

The invention provides a relay protection maintenance state alarm method, and relates to the field of power system relay protection. By acquiring the maintenance state signal of the protection device in the target area and associating the working state judgment of the primary equipment, the dynamic monitoring of the abnormal switching of the maintenance pressing plate is realized. And when the primary equipment is not in the cold standby or maintenance state, the system automatically judges whether the pressing plate operation of the protection device is abnormal or not based on the time window matching property and content consistency of the maintenance list information and the dispatching list information. And if the judgment result is abnormal, triggering a corresponding alarm mechanism according to the grading condition, and generating differentiated alarm information. According to the method, through conjoint analysis of the maintenance state signal and the equipment state, hysteresis and subjective deviation of traditional manual inspection are avoided, and real-time performance and accuracy of anomaly detection are ensured. And meanwhile, the grading alarm mechanism can dynamically adjust the response strategy according to the risk grade, so that the operation safety of the power grid and the alarm processing efficiency are improved.

The application discloses a kind of air-cooled modular magnetic suspension refrigeration unit dynamic control systems applied to refrigeration related technical field, the comprehensive health index of each fan is calculated in real time by health assessment module, and according to the index, fan is dynamically divided into high, medium, low performance group and emergency standby group, realize the differentiated scheduling based on individual health state, avoid the overall heat dissipation capability accelerated recession caused by the equal call of healthy fan and recession fan, can also dynamically adjust fan attribution according to health index change, and then realize active delay fan aging process;In addition, the emergency standby group is subdivided into elite emergency subgroup (from high performance group, the best hot standby is selected) and last emergency subgroup (from low performance group, the lowest cold standby is selected), and is matched with regular rotation and emergency reorganization, realizes the hierarchical reserve and precision scheduling of emergency resources, while guaranteeing refrigeration continuous stability, significantly improves the resource utilization rate and reliability of fan array.

According to the PLC one-main multi-standby redundancy control system and the control method thereof provided by the invention, the standby controller is set to be in the control task suspension execution state, and the control task suspension execution state is immediately switched to the control task normal execution state after the wake-up signal is received; therefore, an operating system signal waiting mechanism is applied to the one-main multi-standby redundancy control system, the CPU occupancy state approaches to zero when the standby controller is in a control task suspension execution state, resource consumption is greatly reduced, meanwhile, millisecond-level wake-up capacity is reserved, the energy saving performance of cold standby and the response speed of hot standby are both achieved, system resource consumption is greatly reduced, and the service life of the system is prolonged. Compared with a traditional hot standby scheme, energy is saved remarkably, and the service life of equipment is prolonged.

The invention provides a 10kV station service power modularized intelligent switching method and system, and the method comprises the steps: calling a corresponding operation mode block, a hot standby block and a cold standby block according to the current state and the target state of a target bus, and writing the numbers and states of a power switch, a feeder switch and a PT trolley into corresponding function blocks; state conversion operation between the function blocks is executed in sequence according to a preset conversion path, the operation mode block and the hot standby block are executed from bottom to top, and a simultaneous execution strategy is adopted between the hot standby block and the cold standby block; after each function block conversion operation is completed, whether the bus is successfully converted to the target state or not is judged in real time, if the target state is not achieved, the current operation process is terminated, manual intervention is prompted, and switching operation continues to be executed until the target state condition is met. According to the technical scheme provided by the invention, one-key conversion among various states of the 10kV auxiliary power bus is realized, and the operation efficiency and safety are improved.

This application provides a method and apparatus for thermal management using a cold storage-type mixed liquid temperature control system. The method includes: determining the operating state of a laser anti-drone system, including a laser-emitting strike state and a non-laser-emitting strike state. The laser anti-drone system uses DC power supply, with an input voltage compatible with 200~750V DC. When the operating state is non-laser-emitting strike, cold storage is performed in a cold standby mode, with intermittent constant-temperature cooling of the light source and continuous constant-temperature cooling of the power supply. This maintains the liquid cooling of the main circuit corresponding to the light source in a first temperature range and the liquid cooling of the secondary circuit corresponding to the power supply in a second temperature range. When the operating state is laser-emitting strike, cold storage is stopped in a hot standby mode, and continuous constant-temperature cooling is performed on the light source and power supply. This maintains the coolant in the cooling circuits corresponding to the light source and power supply in a third temperature range. This ensures that the power devices of the system are maintained within a reasonable temperature range, significantly reducing the system's response time when laser strike is required.

The invention discloses an energy-saving control method for cold standby operation of galleries of an MBR process part of a sewage treatment plant, and relates to the field of sewage treatment.The energy-saving control method comprises the steps that real-time operation parameter monitoring is conducted on all operating galleries in an MBR process system of the sewage treatment plant, and the galleries which can be switched into a cold standby operation state and do not affect the overall treatment effect are screened out according to the monitoring result; pre-treating the screened membrane components in the gallery to be subjected to cold preparation, removing part of pollutants attached to the surface of the membrane, and adjusting the water flow state in the gallery to an initial state matched with cold preparation; according to the invention, cold preparation is carried out by monitoring and screening the adaptive corridor in real time, so that the overall treatment effect of the system is not influenced, the process requirements can be accurately matched, and meanwhile, the membrane component is pretreated and the water flow state is adjusted, so that the membrane surface pollutant attachment can be reduced, the membrane component performance is protected, and the service life is prolonged; and stable switching is realized by gradually adjusting the running state of the equipment, so that impact on the system caused by sudden parameter change is avoided.

The invention discloses a cold standby control method of a processing core, a cold standby controller and an integrated circuit, and relates to the technical field of processors, and the method comprises the steps: in a current evaluation period, the cold standby controller can collect the operation state information of a target processing core corresponding to the cold standby controller, employs a preset scoring rule, carries out the evaluation of the operation state information, and carries out the evaluation of the operation state information; and obtaining a target score of the target processing core in the current evaluation period. Reading an interrupt mark of the target processing core from an interrupt controller and a task allocation mark of the target processing core from a task scheduler when the scores of the target processing core are determined to fall into a preset score threshold range in a continuous preset number of cycles, and then allocating the target processing core to the task scheduler according to the interrupt mark and the task allocation mark. And determining whether the target processing core meets a cold standby condition, and if so, executing a cold standby switching operation on the target processing core. Therefore, the response is timely, and the cold standby controller is only responsible for the corresponding processing core, so that the control granularity is relatively fine.