172 results about "Power supply failure" patented technology

The invention discloses a rapid communication and redundancy control method for an AGC substation of a distributed photovoltaic power station, and the method comprises the following steps: S1, receiving an automatic power generation control instruction from a power grid dispatching system in parallel and uploading real-time operation data of the photovoltaic power station through two independent communication links; according to the invention, the reliability and robustness of the system are fundamentally improved; by constructing a physical basis of parallel work of two paths of independent communication links and combining real-time state monitoring and a millisecond-level rapid switching mechanism, the method thoroughly changes the fragile situation that the whole substation is disconnected and the function is paralyzed due to a single communication channel or a power supply fault of a traditional system; when the main optical fiber link is interrupted due to construction damage or equipment failure, the system can automatically and seamlessly switch all communication services to the standby Ethernet or wireless link without depending on manual intervention, and it is ensured that the transmission path of the scheduling control instruction is always smooth.

The invention relates to the technical field of vehicles, in particular to a dual-redundancy power supply management system and method, and the system comprises an intelligent power distribution unit which is integrated with a first-stage power distribution circuit and a second-stage power distribution circuit; a plurality of MOS (Metal Oxide Semiconductor) tubes are arranged in the primary power distribution circuit and are used for executing corresponding switching operations according to different power failure modes; the secondary power supply distribution circuit comprises a plurality of high-side driving units and is used for providing controlled power supply output for a load, and the high-side driving units have the functions of current detection, temperature detection and fault protection; and the control unit is used for controlling the on-off states of the MOS tube and the high-side driving unit and realizing feedback and remote control of fault information through a bus. Therefore, the problems of low integration level, limited functions, insufficient safety, difficulty in meeting high-order intelligent driving requirements and the like of a vehicle power supply management scheme in related technologies are solved.

The invention discloses a high-side driving circuit, an electronic device, a vehicle and a control method. False triggering of a short-circuit protection mechanism is avoided. The high-side driving circuit comprises a power distribution circuit, a sampling circuit and a fault protection circuit, the power distribution circuit comprises a PMOS transistor and a first resistance circuit; the grid electrode of the PMOS tube is grounded through the first resistance circuit, the drain electrode of the PMOS tube is connected with a load, and the source electrode of the PMOS tube and the input end of the fault protection circuit are connected with a power supply; the output end of the fault protection circuit is connected with the grid electrode of the PMOS tube; the sampling circuit is connected with the drain electrode of the PMOS tube and the ground; the output end of the sampling circuit and the control end of the fault protection circuit are connected to the control unit; the control unit judges whether load short circuit occurs or not according to the sampling voltage, if not, the fault protection circuit is forbidden to output voltage, and if yes, the fault protection circuit is controlled to convert input voltage into target voltage to be output; the PMOS tube is in a variable resistance region when the fault protection circuit has no voltage output, and enters a cut-off region when the PMOS tube outputs a target voltage.

The invention relates to the technical field of electronic equipment, in particular to a power supply fault diagnosis device of a server system and a server wherein the power supply fault diagnosis device of the server system comprises a first programmable controller, a first baseboard management controller, a first power supply unit, a second power supply unit and an anomaly detection and switching unit. By arranging the anomaly detection and switching unit, the standby power supply module can be triggered in time when the first power supply unit of the server is abnormal, continuous power supply of the first programmable controller and the first substrate management controller is ensured, and an out-of-band management function is kept uninterrupted; therefore, real-time detection, recording and reporting of faults can still be realized under the condition of STBY power supply faults, the technical problem that power supply faults cannot be diagnosed due to power loss of the BMC and the CPLD in the prior art is effectively solved, and the power supply reliability, the fault diagnosis coverage rate and the maintainability of a server system are remarkably improved.

The invention discloses a power supply fault detection method and electronic equipment, and relates to the technical field of integrated circuits, and the power supply fault detection method realizes fault detection of a power supply unit through the power supply unit, a control unit and a service system which are connected, and comprises the following steps: firstly, updating a timestamp of the power supply unit according to the time of the control unit; and the power supply log information is generated and stored in the power supply unit, so that the problem of inaccurate time of the power supply log information in related technologies can be relieved, and the accuracy of power supply fault detection is improved. And on the other hand, the power supply log information stored in the power supply unit is sent to the control unit through the received log reading instruction of the user, so that the problems of resource occupation and bandwidth occupation of the control unit caused by frequent access of the control unit to the power supply unit in related technologies can be relieved; and the operation efficiency of the control unit is improved.

The invention relates to a novel intelligent calculation center power supply framework which comprises an A-path power supply module, a B-path power supply module, a diesel generator power supply module and a cabinet module. Wherein the A-path power supply module, the B-path power supply module and the diesel generator power supply module are used for supplying power to the cabinet module in a normal operation state, an A-path commercial power supply fault state, a B-path commercial power supply fault state and a double-path commercial power supply fault state respectively, and the cabinet module comprises an AC-DC rectifier module, a super capacitor and a cabinet. And the cabinet module is used for inputting the accessed power supply to the cabinet through the AC-DC rectifier module and the super capacitor. The power supply architecture is mainly formed by connecting the busbars and the dense buses, the connection mode is simple, the field construction amount and fault hidden danger points are greatly reduced, and the safety of the system is improved.

The invention relates to the technical field of industrial automation control, in particular to a PLC (programmable logic controller) dual-redundancy power supply module supporting checking of operation quality information and a control method, comprising a master power supply, a slave power supply and matched control logic which are redundant to each other; each of the master power supply and the slave power supply comprises an AC input module, a rectification filtering module, a power conversion module, a protection module, an analog quantity acquisition module, an ADC module, an industrial grade MCU module, a nonvolatile storage module, a communication module, a state indication module and an onboard energy storage unit. The control logic comprises the steps that the PLC scans the number of modules to determine master and slave identities; the timer interrupts and triggers the ADC to collect voltage / current / temperature data, the data are stored in the SRAM after being converted, and abnormal data are stored in the nonvolatile storage unit in a classified mode; the 485 communication module responds to a PLC request to export data; and when the main power supply fails, the slave power supply is automatically switched to the main power supply and outputs 24V. According to the invention, real-time monitoring and accurate fault positioning can be realized, the reliability of the PLC system is improved, the cost is low, and the method is suitable for industrial automation scenes.

The invention discloses a power supply module for a railway vehicle and a power supply system thereof. The power supply module comprises a multi-power input module, an intelligent switching module, a multi-mode rectifying and voltage-stabilizing module, an energy storage unit, a bidirectional DC / DC converter, a high-voltage direct-current bus, a traction inverter, an auxiliary inverter, a load output module and a comprehensive control module. Intelligent multi-source power supply in a real sense is realized by constructing a system architecture comprising a multi-power input module, an intelligent switching module and a comprehensive control module. The beneficial effect is that the power supply reliability and continuity are greatly improved. The system can monitor the state of each power supply in real time, automatically selects the optimal power supply or combination to supply power according to a preset strategy (such as priority, electric energy quality and cost), and seamlessly switches to the standby power supply when any power supply fails or is interrupted, so that the risk of downtime of the train auxiliary system due to the power supply problem is thoroughly avoided.

The invention belongs to the technical field of power supply and distribution systems, and discloses a direct current power supply and distribution system and method of a nuclear power station facing a computing power data center, and the system comprises a direct current power supply and distribution architecture of a main power supply system, a medium-voltage direct current system and a low-voltage direct current system. Alternating current of a main power supply system is converted into medium-voltage direct current to be supplied to a medium-voltage direct current system through a first voltage conversion module, then the medium-voltage direct current is converted into low-voltage direct current to be supplied to a low-voltage direct current system through a second voltage conversion module, and the medium-voltage direct current system directly supplies power to a low-voltage system when a main power supply fails. And when the main power supply and the medium-voltage system both fail, the low-voltage system operates independently to meet the load requirement. By adopting the system, the equipment investment and the operation cost are obviously reduced, the electric energy transmission efficiency and the power supply reliability are improved, the potential safety hazard is eliminated, and the efficient cooperative power supply of the station power of the nuclear power station and the load of the data center is realized.

The invention relates to a concurrent power-on logic sequencing networking method for an emergency lighting wireless system, and the method comprises the steps: enabling all emergency lighting nodes to be started concurrently and reading preset floor numbers and network roles under the triggering conditions that a main power supply fault is monitored and a standby battery is switched to supply power; calculating logic delay time according to the floor number and the network role, wherein the time is silent waiting time before the node executes a networking action; and the node keeps a silent receiving state in the logic delay time period, and executes a network networking action corresponding to the role after the delay is ended. According to the method, physical concurrent power-on is converted into ordered access on the time axis, so that channel congestion and signal collision are effectively avoided, and rapidity and reliability of network construction in an emergency scene are guaranteed.

The utility model discloses an emergency power supply switching device and electronic equipment. The emergency power supply switching device comprises an input power supply switching module and a relay contact switching module, wherein the input power supply switching module outputs a first power supply and outputs a second power supply when a second power supply input end does not receive the first power supply and receives the second power supply; when the relay contact switching module does not receive the first power supply, the third power supply output end is switched to be communicated with the second power supply and outputs the second power supply to the input power supply switching module. According to the technical scheme, through the arrangement of the input power supply switching module and the relay contact switching module, rapid switching between the main power supply and the emergency power supply is achieved; and the elevator can be timely connected to the emergency power supply when the main power supply fails, so that the safety and the reliability of the system are improved.

This application belongs to the field of power electronics and automatic control technology, and relates to a power supply smooth switching control method for suppressing DC bus voltage surges. It solves the problem of DC bus voltage surges caused by potential changes during primary / standby power supply switching, including: dynamically matching the standby power supply output to the primary power supply voltage and reserving a voltage difference margin through voltage closed-loop feedback; initiating switching when a primary power supply fault is detected or the bus voltage drop rate exceeds a threshold; utilizing controlled current injection into the MOSFET gate to bring it into the Miller plateau region and allowing it to remain in the linear operating region for a preset transition period; controlling the MOSFET drain-source equivalent resistance to continuously decrease according to an S-shaped function to absorb transient energy; and locking the fully conducting state to complete seamless switching when the drain-source voltage difference approaches zero. This method effectively eliminates high-frequency oscillations, achieves microsecond-level potential transitions, significantly improves system reliability and response speed, and is suitable for high-reliability power supply scenarios with stringent "zero-inductive switching" requirements.

A power supply system according to the present invention comprises a power supply terminal, a load terminal, and a backup power supply unit. The power supply terminal is connected to a power supply. The load terminal is connected to a load. The backup power supply unit is connected to a power supply path. The power supply path connects the power supply terminal and the load terminal. The backup power supply unit includes a power storage unit and a power conversion unit. The power conversion unit is connected between the power storage unit and the power supply path. When the power supply has failed, the power conversion unit supplies regenerative power generated by the load via the power conversion unit to the power storage unit.

The invention discloses an inverter power supply fault joint protection circuit. A plurality of MOS tubes (S1, S2, S3 and S4) form a full-bridge conversion circuit, a current sampling resistor (RS1) is connected in series between the MOS tubes S1 and S2, a current sampling resistor (RS2) is connected in series between the MOS tube S2 and an input negative electrode, a current sampling resistor (RS3) is connected in series between the MOS tube S3 and S4, and a current sampling resistor (RS4) is connected in series between the MOS tube S4 and an output negative electrode. According to the invention, in order to realize quick response, signal processing and triggering, analog circuit construction is adopted, and functions of overvoltage and overcurrent flexible setting, sound and light alarm, fault display and the like are realized through software.

A hand-dialing double-color-temperature constant-power switch switching device for a lamp strip comprises a power supply, a control circuit and an LED load, the control circuit is connected between the power supply and the LED load, and the control circuit comprises a two-pole three-gear toggle switch, a plurality of balance diodes and a plurality of balance resistors. The LED load comprises a first LED lamp set and a second LED lamp set which are connected in parallel, the toggle switch controls the first LED lamp set and the second LED lamp set to be connected to different switch contacts, and the function of keeping input power constant in three different color temperatures is achieved by controlling combination of the balance diode and the balance resistor. According to the technical scheme, the problems of LED load over-temperature, advanced aging damage and advanced failure of the power supply due to overload are effectively avoided, the service life of the product is prolonged, in addition, switching of three color temperatures can be realized without reducing the load power or increasing the power of the power supply, and the application range of the product is expanded.

To provide a power source control device and a control program in which power consumption in a backup power source can be further suppressed.SOLUTION: A power source control device according to an embodiment includes a controller. The controller performs communication with another control device, and performs backup control to supply power from a backup power source to a load when a failure in a main power source is detected. When performing the backup control, the controller degenerates a communication function.SELECTED DRAWING: Figure 1

The utility model discloses a kind of energy gateway power supply circuit, belong to power supply circuit technical field. Including commercial power flyback subcircuit and direct current flyback subcircuit, the input end of commercial power flyback subcircuit is connected external commercial power, the output end of commercial power flyback subcircuit is connected the input end of high voltage trigger subcircuit, the input end of direct current flyback subcircuit is connected external direct current power supply, the output end of direct current flyback subcircuit is connected the input end of high voltage trigger subcircuit, the output end of high voltage trigger subcircuit is simultaneously connected the input end of low voltage trigger subcircuit and internal equipment, the output end of low voltage trigger subcircuit is connected internal equipment, and 5V voltage output by high voltage trigger subcircuit is converted to 3.3V voltage by low voltage trigger subcircuit to power supply internal equipment. The utility model realizes two power supply, when in commercial power or direct current power supply failure, it can select another normal commercial power or direct current power supply to power supply, realize stable power supply.

A novel, two-stage Distributed Fiber Optic Sensor (DFOS) placement strategy and method that ensures resilient monitoring of critical infrastructure during electrical power supply failures. This strategy and method combines a heuristic algorithm, PURE (Power Source-aware Route Exploration), with Integer Linear Programming (ILP) optimization. The PURE algorithm explores potential DFOS routes while explicitly considering the dependency of DFOS devices on the electrical power distribution network, ensuring routes electrically powered by the same electrical power feeder are disjoint. Subsequently, the ILP selects the optimal set of DFOS placements to minimize the total number of deployed sensors while meeting critical infrastructure monitoring requirements, such as redundant monitoring for high-importance links. The method enhances the observability of critical links, achieving 100% monitoring coverage for important links during simulated power outages affecting an electric feeder.

The embodiment of the invention provides a key equipment state-based thermal power generating unit power generation capacity evaluation method and device. The method comprises the following steps of: constructing a thermal power generating unit initial key equipment state evaluation index system; determining a subjective weight through an analytic hierarchy process, and determining an objective weight through an entropy weight method; weighting the initial key equipment state evaluation index system based on the subjective weight and the objective weight, and determining a target key equipment state evaluation index system; performing equipment health state evaluation based on the target key equipment state evaluation index system, and determining an equipment load influence value; and determining the power generation capacity of the thermal power generating unit based on the equipment load influence value. The method can feed back the health state information of the key equipment of the unit in real time, so that power grid dispatching personnel can accurately master the operation condition of the equipment, thereby optimizing the power grid dispatching decision flow, effectively reducing the system disturbance risk caused by power supply faults, and remarkably improving the safe and stable operation level of a power system.

The invention discloses a power supply switching method for a protection and measurement device. The method comprises the following steps: collecting historical physical parameter characteristics of a power supply of the protection and measurement device to construct a power supply fault judgment model; setting a corresponding relation between the power supply fault judgment model and the fault type; collecting physical parameter characteristics to match with a power supply fault judgment model to accurately identify a fault type; and controlling the power switching system to carry out fault processing operation according to the fault type. According to the method, power supply fault judgment models of different fault scenes are constructed, so that accurate recognition of fault types is realized, the complex situation that multiple fault scenes are overlapped is effectively recognized, and after the fault scenes are recognized, how to carry out fault processing operation can be judged according to the number of the fault scenes and preset response operation, so that the fault processing efficiency is improved. Automatic instantaneous switching of the main power supply module and the standby power supply module in the fault mode is achieved, complex circuit topology does not need to be designed, reliability is extremely high, and the method is suitable for large-scale application and popularization.

The invention discloses an in-station power supply management system of a wireless communication sensor, which relates to the technical field of intelligent power supply management, and comprises the steps of performing trend analysis by combining historical operation data, predicting a power supply fault and sending out an early warning signal; switching the power supply of the wireless communication sensor node; and generating a dynamic energy-saving regulation and control strategy, and managing an in-station power supply. According to the invention, intelligent and refined management of the power supply process of the wireless communication sensor is realized, the coordination and closed-loop performance of overall control are enhanced, the problems of isolated power supply management and lack of dynamic response and energy efficiency optimization capability in the prior art are effectively solved, and the power supply management efficiency is improved. And the operation reliability, sustainability and operation and maintenance efficiency of the wireless communication sensor in a complex industrial environment are remarkably improved.

The invention discloses a power supply control system, method, device and equipment of a vehicle and a medium. The power supply control system of the vehicle comprises a direct current conversion module, a traditional power distribution module and an intelligent power distribution module, the DC conversion module is connected with the traditional power distribution module and the intelligent power distribution module through wires. The traditional power distribution module is connected with a plurality of mass loads of the vehicle; the intelligent power distribution module is connected with a plurality of safety loads of the vehicle. Loads are divided into mass loads and safety loads according to functions, power is supplied through different power distribution modules, the situation that loads of the whole vehicle are powered off due to faults of a single-path power source is avoided, and the stability and safety of the vehicle are improved; meanwhile, an independent power supply is arranged in the intelligent power distribution module, even if a main power supply provided by the direct-current conversion module breaks down, continuous work of the safety load can still be guaranteed, normal exertion of the safety function of the vehicle is guaranteed, and driving safety of the vehicle and users is guaranteed.

The application discloses a high-speed rail power transmission line double-mode defect intelligent detection method based on an improved YOLOv11s, relates to the field of high-speed rail power system equipment fault detection, and solves the problem that the existing method cannot realize synchronous detection of thermal defects and structural defects. The application uses a UAV loaded with an infrared thermal imager and a visible light camera to collect double-source images of insulators and contact line connecting pieces of a high-speed rail power transmission line, constructs a multi-modal sample data set after defect labeling; a weight model of a YOLOv11s network model is obtained after pre-training on the multi-modal sample data set; a wavelet transform convolution, a double-mode gate fusion module and a lightweight attention mechanism are introduced, the weight model is migrated to the improved YOLOv11s network model, and a detection model is trained to realize detection, so that defect changes can be captured in real time, power supply failure rate is reduced, and line operation reliability is improved.

The invention discloses a mining dual-power-supply automatic switching illumination comprehensive protection system, and belongs to the technical field of mining electrical protection equipment. The technical scheme of the invention comprises a power supply input circuit, a vacuum contactor and a programmable logic controller used for monitoring a power supply state in real time and executing switching logic. The core of the system is that a buffer module is arranged in a direct current control power supply circuit for supplying power to the PLC and the control relay in parallel. During normal power supply, the buffer module is charged for energy storage; when a main power supply breaks down and a system executes switching, in a short interval when the main vacuum contactor and the auxiliary vacuum contactor are disconnected, the buffer module discharges immediately to provide an uninterrupted direct-current power supply for the PLC and a control loop, so that the PLC can continuously and stably execute a switching instruction, seamless power supply switching of a lighting load is realized, and the power supply reliability of the lighting load is improved. The lighting blind area in the switching process is eliminated, and the safety of underground operation is remarkably improved.

The invention relates to the technical field of whole station power supplies, in particular to a whole station power supply system with multi-standard voltage seamless switching control, which comprises an acquisition module, an identification module, a type determination module, a judgment module, a generation module and an adjustment module. According to the method, the input voltage and the power supply temperature of the power supply of the whole station and a plurality of key parameters related to photovoltaic, storage battery and commercial power supply capabilities are acquired in real time, the real-time condition of the power supply is monitored, the abnormal type and the abnormal degree are determined, and the power supply switching in the abnormal state is realized by calculating the priority index for measuring the health condition of the power supply. Meanwhile, the preset power transmission threshold value or the switching instruction is adjusted according to the time distribution characteristic of the abnormal degree, so that the intelligent management capability and the overall operation safety of the system are greatly improved; the problem that power supply potential safety hazards are caused by slow power supply fault response when a whole power supply system is located at a remote site due to dependence on a single power supply is effectively solved.

The application discloses a power failure detection circuit and a server device. The power failure detection circuit comprises a signal recording end connected with a mainboard power supply of the server device, a panel key input end connected with a panel key of the server device, a signal output end connected with an external interface of the server device, a programmable logic device, a signal recording interface of the programmable logic device connected with the signal recording end, a panel key access interface of the programmable logic device connected with the panel key input end, and a signal output interface of the programmable logic device connected with the signal output end. The programmable logic device records and stores a power detection signal output by the signal recording end. The programmable logic device is further used for reading and outputting the power detection signal to the signal output interface when receiving a failure detection key signal accessed by the panel key input end.

The embodiment of the invention relates to a PCIe (Peripheral Component Interconnect Express) equipment loss retry method. The method comprises the following steps: acquiring power supply fault state information of PCIe equipment; judging whether the power supply fault state information is warm start or not; if yes, the slot position of the PCIe equipment is scanned, and slot position state information is obtained; judging whether the slot position state information is first preset state information or not; and if yes, restarting the PCIe equipment. According to the method, the initialization success rate of the equipment can be optimized, and the robustness of the system is improved.

A controller of a power supply control is configured to: in response to a failure of a main power supply being detected, execute a fail-safe control in which a connector is interrupted and electric power from a backup power supply is supplied to a second load; in response to a state value indicating a charging state of the backup power supply decreasing to a first threshold during the fail-safe control, execute an advance notice process for giving a user advance notice that a vehicle will be stopped; and in response to the state value decreasing to a second threshold which is smaller than the first threshold and which indicates a safety limit of the backup power supply, execute a power supply stop process for stopping supply of the electric power from the backup power supply.

The invention discloses a double-set-value pressure controller capable of being used for measuring negative pressure, and relates to the field of pressure controllers, the double-set-value pressure controller comprises a shell body, a lower cover, a plurality of groups of trigger units and a plurality of groups of connecting units, a mutually independent double-cavity structure is formed in the shell body, and a group of microswitches is arranged in each cavity; the terminal strips are connected to different power supplies and control systems to realize redundancy control of physical isolation; different power supplies and different systems are respectively connected through the terminal strips, and the two groups of completely independent terminal strips are physically isolated from contacts, cables to power supply and signal receiving systems, so that the common cause fault of safety function failure caused by single power supply fault or single system fault is avoided, and when power failure occurs, the power supply is switched off by depending on a pure mechanical principle. Work can be executed without external power supply, the microswitch is directly driven to act by means of pressure, safety interlocking is completed, and the power-off protection function is achieved.