46 results about "Power topology" patented technology

The invention provides a dynamic power distribution method, system and device and a medium, and the method comprises the steps: generating a path comprehensive state table between a parking space and a power module according to the charging condition and the power topology state of each parking space in a current station; according to the real-time state of each power module in the power topology state and the charging condition of each parking space, performing priority ranking on the charging demand of each parking space to obtain a parking space distribution ranking result; therefore, a power module distribution mode of each parking space can be generated by using a charging power dynamic distribution algorithm based on the charging condition of each parking space, the path comprehensive state table and the parking space distribution sorting result, and power distribution is performed on the parking space having a charging demand according to the power module distribution mode of each parking space. The charging requirement of the required parking space can be met on different power topologies, and the flexibility of the charging pile system can be improved to the maximum extent.

Embodiments of the present application provide a thermal failure processing circuit, a thermal failure processing method, an electronic device, a medium and a product. The thermal failure processing circuit comprises a power topology module, a signal processing module and a control module, wherein the power topology module comprises a first transistor and a second transistor, the control module is configured to control the first transistor and the second transistor to be turned on, a first detection unit is configured to collect a first voltage corresponding to a second end of the first transistor and send the first voltage to the control module, a second detection unit is configured to collect a second voltage corresponding to a second end of the second transistor and send the second voltage to the control module, and the control module is configured to perform thermal failure detection on the first transistor and / or the second transistor based on the first voltage and / or the second voltage, and start a preset processing mechanism when the first transistor and / or the second transistor is thermally failed. Based on the thermal failure processing circuit provided by the present application, the stability and reliability of the system can be improved.

The invention relates to the technical field of electric power early warning, and provides an electric power system multi-mode fault intelligent early warning method and system based on edge computing, and the method comprises the steps: collecting the operation state information of each electric power node based on edge computing equipment disposed at each electric power node in an electric power system; performing operation state analysis according to the operation state information of each power node to obtain abnormal fault nodes in the power system, and performing fault type analysis based on the operation state information of each abnormal fault node to obtain an abnormal fault result of each abnormal fault node; performing propagation path traversal in the power topology according to a fault traversal mode corresponding to the abnormal fault result of each abnormal fault node, and determining a target fault area; and generating fault early warning of a corresponding level based on the area range of the target fault area. The safe and stable operation of the power system is improved.

This application relates to a method, apparatus, and storage medium for dynamic operation of a power grid based on seasonal scenarios. The dynamic operation includes: constructing a power topology model of a flexible microgrid; obtaining operational data for each grid partition on a target day of the current seasonal scenario; determining update indicators for each grid partition based on the operational data; adjusting the operational status of energy storage devices and the on / off states of remote control switches according to the comparison results of each update indicator with a preset update threshold; determining the grid partition structure; using the grid partition structure and the operational status of the energy storage devices as the initial partition configuration for the next seasonal scenario; and again adjusting the energy storage devices and remote control switches according to the update indicators; and adjusting the operational status of the power topology model in each seasonal scenario, using the current seasonal scenario and the next seasonal scenario respectively. This application improves the power grid's ability to dynamically operate under different seasonal scenarios.

The present application belongs to the technical field of power supply for large-capacity high-frequency transformer testing, and particularly relates to an energy feedback large-capacity high-frequency transformer testing power supply topology and control method, aiming to solve the problem of resource waste caused by large power consumption in the temperature field testing of large-capacity high-frequency transformers in the prior art. The present application comprises: a three-phase multi-winding transformer, including one primary three-phase winding and M+N secondary three-phase windings; M+N AC / AC modules corresponding to the secondary three-phase windings; a first resonant capacitor connected in series between the first AC / AC module and the high-voltage side of the large-capacity high-frequency transformer to be tested; a second resonant capacitor connected in series between the M+1th AC / AC module and the low-voltage side of the large-capacity high-frequency transformer to be tested; and a first bypass switch and a second bypass switch connected in parallel with the first resonant capacitor and the second resonant capacitor, respectively. The present application saves electric energy and occupies less resources, has a modular structure, a wide test voltage range, a low rated voltage of a single module, and strong reconfigurability.

The invention discloses a main network SVG graph model updating method, system and device based on an overlapping sliding window mechanism and dynamic correction and a medium, and the method comprises the steps: carrying out the sliding cutting of a main network SVG graph according to a preset window size and an overlapping rate, and generating a sub-graph set containing an overlapping region; electrical equipment primitives and coordinates in a sub-graph set are recognized through a target detection model, connecting lines between the equipment are extracted based on a straight line detection algorithm, the equipment primitives and the coordinates of the connecting lines are accurately positioned, and the problems of missed recognition and false recognition in a high-density graph are solved; the connection relation is dynamically corrected according to a power topology rule, reconnection operation is executed on the connecting lines crossing the bus to correct abnormal topology, a final to-be-rendered area is generated, and it is ensured that a graph model is consistent with an actual power grid structure; calculating a comprehensive complexity index of the region according to the attribute value of the to-be-rendered region; and on the basis of the comprehensive complexity index and the set threshold value judgment result, the judgment area is subjected to CIM model data rendering or updating operation, interface jamming is avoided, and the main network SVG graph model updating requirements of different complexities based on an overlapped sliding window mechanism and dynamic correction can be met.

The present disclosure relates to a redundant power device, and an object of the present disclosure is to provide a redundant power topology that can ensure normal operation of a battery management system (BMS) by securing normal operating power of the BMS even when a disconnection occurs in a cable connecting a battery cell and the BMS or an abnormality or failure occurs in an uppermost battery cell. The present disclosure provides a configuration of switching a power supply cable to a processor so that power is supplied to the processor through a sub-cable when an abnormality occurs in a main cable.

The application relates to a power topology graph dataset generation method and device of a power system, computer equipment and a computer readable storage medium. The method comprises the following steps: taking a target transformer substation as a main network public node based on the intersection relationship between a main network primary equipment topology structure and a regional boundary; screening out a target plant station which realizes electrical communication with the main network public node through a closed electrical path from a regional power grid based on the switch equipment state corresponding to the main network public node and the bus operation mode; taking a target geographical area covered by the target plant station as a service domain, constructing a local power service view of the main network public node based on the power grid collaborative service relationship of different regional power grids and the plant station collaborative service relationship of different service domains in the same regional power grid; and fusing the local power service view based on the electrical connection path relationship of the main network public node to obtain a power topology graph dataset. The method can accurately screen plant station data participating in cross-regional power interaction.

The invention provides a rectifier and a rectification method suitable for various alternating current voltage inputs, the rectifier comprises various alternating current voltage data identification modules, N alternating current voltage input ports and N charging branches, each alternating current voltage input port is correspondingly connected with one charging branch, each charging branch comprises an alternating current switch assembly and a power topology module which are connected with each other; the various alternating-current voltage data identification module comprises a data processing module and a main control module, the data processing module comprises a rectification module, an auxiliary source module and a signal acquisition module, the auxiliary source module comprises N flyback circuits, each flyback circuit is correspondingly connected with an alternating-current voltage input port, and N is a positive integer; the alternating-current voltage rectified by the rectifier module is converted into low-voltage direct current to be output to the main control module; and the main control module judges the current input port according to the low-voltage direct-current output signal so as to control the conduction of the corresponding charging branch. The rectifier can identify various AC voltage input working conditions, and can meet different requirements of users.

The invention discloses a flexible charging pile unbalanced path power sharing method, and relates to the technical field of electric vehicle charging facilities, and the method comprises the following steps: configuring a power topology according to the power level of a station and the number of parking spaces, and when the parking spaces are not fully configured, reconnecting a direct connection power module of a removed parking space to other remaining parking spaces; the power modules corresponding to the multiple parking spaces form sharing groups, the sharing groups support parallel connection to achieve mutual calling of the power modules, and at least one multi-path parking space is arranged in each group. According to the flexible charging pile unbalanced path power sharing method provided by the invention, through an innovative power topology design and a dynamic distribution mechanism, the flexibility and the operation efficiency of a charging facility are remarkably improved, a charging system can be flexibly configured according to power levels and parking space requirements of different stations, and the charging efficiency is improved. High-efficiency sharing and dynamic allocation of the power modules are realized, power resource utilization is optimized, and adaptation under parking space requirements and power changes is ensured.

The application discloses a flywheel energy storage system supporting method based on data center power switching and belongs to the technical field of power supply of power systems, which comprises the following steps: collecting real-time impedance parameters of each electrical equipment in a power grid through a preset impedance detection node to judge the power supply state of a main power supply and generating power topology state parameters; generating flywheel rotor dynamic torque compensation parameters according to the power topology state parameters and a preset torque threshold value, controlling the output of a preset multi-stage power switching matrix to synchronize phase parameters; and generating power distribution weight parameters based on the synchronized phase parameters and a preset load priority queue and updating the state parameters of the flywheel energy storage system. Through real-time impedance parameter monitoring of the power grid topology state, dynamic adjustment of the flywheel torque compensation parameters and multi-stage power synchronization phase control, and the power weight distribution of the load priority queue, the application can realize millisecond-level response, phase continuous transition and power supply continuity guarantee of key loads in the power supply switching process.

The invention provides a construction method and device of a transformer area power topological structure, and relates to the technical field of power systems. The method comprises the following steps: acquiring power consumption data of each user node in a target transformer area; according to the power consumption data of each user node, determining a connection relationship between branches in the target transformer area; obtaining loss data of each user node according to the power consumption data and a connection relationship between branches in the target transformer area, and obtaining a plurality of target coupling nodes according to the loss data; and according to the connection relationship between the branches and the plurality of target coupling nodes, constructing a power topological structure of the target transformer area. According to the method, limited power consumption data is utilized, no additional measuring equipment is depended on, no additional cost needs to be increased, and the obtained connection relation between the branches and the multiple target coupling nodes are compared and analyzed by utilizing the existence characteristics of the power consumption data in the topological structure, so that the accuracy of the obtained topological structure can be further improved.

This invention discloses a method and system for equivalent electrical topology modeling of heating networks, relating to the field of heating network modeling technology. The method divides the heating network into multiple water pipe components, performs hydraulic circuit equivalent analogies on each component to obtain multiple hydraulic circuit equivalent models, and performs thermal circuit equivalent analogies on each component to obtain multiple thermal circuit equivalent models. Based on a preset hydraulic-thermal coupling coefficient, the hydraulic and thermal circuit equivalent models corresponding to each water pipe component are hydraulically and thermally coupled to obtain the equivalent electrical topology model of the heating network. This invention solves the technical problem that traditional heating network modeling methods mainly rely on mechanistic analysis, which suffers from complex parameter identification and low computational efficiency, thus reducing the reliability of heating network operation.

This invention relates to the field of distribution network operation monitoring and model maintenance technology, specifically to a power topology modeling method for low-voltage distribution networks with distributed power source access. This method establishes an initial power topology using ledger and connection information, records grid-connected inverter constraints, collects and aligns node voltage and other measurement mapping models, constructs voltage differentials in windows and calculates photovoltaic common-mode risk, dynamically weights candidate topologies based on risk to select the final solution, corrects connections, verifies and outputs the topology model. This invention calculates photovoltaic common-mode risk in windows and dynamically adjusts it, improving the robustness of topology judgment; after correcting connections and verifying the topology based on the final solution, a usable model is output.

The invention relates to the field of power supply emergency control, in particular to an emergency control method and system for a multi-channel high-voltage power supply. The method comprises the following steps: acquiring a laboratory power supply node information set, constructing a power supply topological structure according to the laboratory power supply node information set, and generating a laboratory power supply connection topological data set; acquiring a power channel real-time state set, performing channel state mapping and contrastive analysis according to the power channel real-time state set and the laboratory power connection topological data set, and determining a current experiment category information set; based on the current experiment category information set, potential power supply risk factors related to the current experiment are analyzed, and a power supply emergency regulation and control strategy is generated; and according to the power supply emergency regulation and control strategy, executing corresponding power supply channel regulation and control operation, and generating a power supply emergency processing log. In the high-voltage power supply emergency control process, manual intervention is reduced through structured data processing, and the method is suitable for a complex laboratory power supply management scene.

This invention relates to the field of drive circuit technology, and discloses a highly reliable gate drive circuit, drive chip, and power semiconductor device. The circuit breaks through the existing passive compromise scheme that relies solely on adjusting the turn-off resistor. It uses a detection unit to collect the gate voltage of the IGBT unit in real time, a latch unit to output a stable square wave signal when the voltage reaches a preset threshold, and a pull-down unit to simultaneously provide a low-impedance discharge path, actively suppressing abnormal gate voltage rise caused by the Miller effect. The design of the Miller suppression unit avoids the switching speed reduction and device overheating problems caused by increasing the turn-off resistor, while effectively suppressing the risk of mis-turn-on caused by crosstalk between the upper and lower bridge arms, achieving dual optimization of crosstalk suppression and switching performance. This significantly improves the reliability and stability of the gate drive, extends the lifespan of the power semiconductor device, and is suitable for various power topologies such as half-bridge and full-bridge, with wide application scenarios and strong practicality.

The utility model particularly relates to a power supply topology circuit structure used for grid driving power supply. The power supply topology circuit structure comprises a control unit, an LLC circuit connected with the control unit, and a grid voltage division circuit connected with a rectification structure of the LLC circuit. According to the utility model, the LLC circuit and the grid voltage division circuit are combined, so that the power transformer in the LLC circuit has relatively large leakage inductance and relatively small parasitic capacitance from the first side to the second side, thereby effectively reducing EMI noise coupling, achieving the purpose of improving EMC performance of a new energy motor technology, and improving the reliability of the new energy motor. The circuit at least has the advantages of low EMI noise and high EMC performance.

The invention provides an isolation power supply topology identification method and device, electronic equipment and a storage medium, and relates to the technical field of power electronics, and the method comprises the steps: determining a preliminary screening isolation device based on the netlist information and welding selection device information corresponding to a single board; the netlist information is used for representing electrical connection information included in the single board; based on the netlist information, the preliminary screening isolation device is divided into a first-stage isolation device and a multi-stage isolation device; identifying power utilization ends corresponding to the first-stage isolation device and the multi-stage isolation device; and determining a topological structure corresponding to the isolated power supply based on the non-isolated device and the power utilization ends corresponding to the first-stage isolated device and the multi-stage isolated device. According to the method, the topological structure corresponding to the isolated power supply can be identified, the tail end condition of the isolated power supply is determined from the topological structure, the accuracy of problem positioning in PI simulation is improved, and thus the reliability of a PI simulation result is improved.

The invention discloses an ultrahigh-frequency alternating-current and direct-current welding power supply topological structure and a control method thereof, relates to a welding power supply topological structure and a control mode, and aims to solve the problem that an existing welding power supply is limited by a topological structure and a control strategy and cannot realize independent and accurate regulation and control of alternating-current and direct-current components. The three-phase rectifying and filtering circuit is used for rectifying and filtering input three-phase alternating current. The full-bridge inverter circuit is used for converting the direct current into high-frequency alternating current; the primary sides of the two transformers are connected with the full-bridge inverter circuit; one transformer is connected with the direct current component module through a first secondary rectification circuit; the other transformer is connected with the high-frequency component module through a second secondary rectifying circuit; the direct-current component module is used for adjusting the rectified current again to output a direct-current component; the high-frequency component module is used for outputting high-frequency components; the direct-current component module and the high-frequency component module are connected in parallel and then connected to a welding arc output device. The beneficial effect is that independent and accurate regulation and control of AC / DC components are realized.

The invention relates to a high-efficiency flyback power supply topology circuit structure which comprises a control chip, a peripheral circuit of the control chip, a current sampling and feedback circuit, a voltage sampling and feedback circuit and a secondary output synchronous rectification circuit. The control chip and the peripheral circuit thereof are used for providing a driving signal for a primary power circuit of the flyback power supply, so that the circuit has a short-circuit protection function, a soft start function and the like; the current sampling and feedback circuit is used for flyback of a primary power circuit of the power supply to obtain a primary side current feedback signal; the voltage sampling and feedback circuit is used for flyback of a secondary power circuit of the power supply to obtain a secondary side voltage feedback signal; and the secondary output synchronous rectification circuit is used for driving a flyback power supply secondary output power MOS (Metal Oxide Semiconductor) tube so as to detect the on-off state and the on-time of the secondary power MOS tube and generate a corresponding synchronous rectification driving signal. The flyback synchronous rectification circuit is optimized, the overall conversion efficiency of the power supply is improved, and the size of the power supply is effectively reduced.

In an embodiment, a latch device includes a latch circuit configured to latch a binary data value based on the functional clock signal being in the active phase and output the binary data value until a different data value is received at a data input node. The latch circuit includes a plurality of gates, including a plurality of clocked gates and a plurality of non-clocked gates. The plurality of clocked gates includes a maximum of three clocked gates. Each of the plurality of non-clocked gates persists in a static state as long as the latch device stores a logic zero and the binary data value at the data input node is logic zero.

The application provides a power distribution system fault recovery method and system considering mobile emergency energy scheduling, and belongs to the field of power system automation. The method comprises the following steps: a double-layer collaborative optimization model is constructed, the double-layer collaborative optimization model comprises an upper-layer self-healing reconstruction model and a lower-layer mobile emergency energy scheduling model; an improved whale optimization algorithm is used to iteratively solve the double-layer collaborative optimization model. A collaborative optimization switch state and a mobile emergency energy scheduling scheme are obtained; according to the solving result, an integrated self-healing scheme containing a switch operation sequence and a mobile emergency energy scheduling instruction is output and is executed. The application realizes the cooperation of the three domains of power topology, mobile energy and traffic network, effectively improves the power supply recovery efficiency, reliability and economy, and enhances the disaster resistance of the power distribution network.

The invention provides a soft switching arc welding power supply topology with low-stress and anti-fatigue characteristics. The soft switching arc welding power supply topology comprises a direct-current voltage source, a voltage stabilizing circuit, a phase-shifted full-bridge circuit, a high-frequency transformer, a full-wave rectifying circuit, a high-speed chopper circuit and a resonance current complementary circuit which are connected in sequence, the phase-shifted full-bridge circuit comprises a leading bridge arm and a lagging bridge arm; the midpoint A of the leading bridge arm is connected with the midpoint B of the lagging bridge arm through a primary winding of the high-frequency transformer; the resonance current complementary circuit comprises an auxiliary transformer Ta, an inductor La and a non-polar capacitor Ca; the primary side of the auxiliary transformer Ta is connected to the midpoint A and one end of the inductor La, the secondary side of the auxiliary transformer Ta is connected to the midpoint B and one end of the inductor La, and the other end of the inductor La is connected with the negative electrode of the direct-current voltage source through the capacitor Ca. According to the power supply topology, zero-voltage switching commutation operation of all SiC MOSFET power devices in the whole load current range can be realized, and the duty ratio loss and the rectifier diode voltage spike are reduced.

The invention relates to the field of power control automation, and provides a multi-mode switching control method and device for a high-temperature superconducting phase modifier excitation system, and the method comprises the steps: setting an excitation current control reference threshold value of the excitation system according to a power grid dispatching instruction for a two-stage topological structure of the superconducting phase modifier excitation system; managing a voltage change track of a pre-stage topology of the excitation power supply and an excitation current change direction of a post-stage topology of the excitation power supply by calculating an excitation current demand change rate, and suppressing excitation current ripples; and the excitation power supply topology is controlled to be automatically and smoothly switched among three working modes of low-voltage excitation, high-voltage strong excitation and reverse demagnetization based on the excitation rate criterion. According to the invention, the excitation power supply of the superconducting phase modifier can be ensured to work in a rapid strong excitation mode to meet a control time limit when the power grid sends out a strong excitation instruction, the excitation power supply of the superconducting phase modifier can be ensured to work in a low-voltage excitation mode when the power grid sends out a constant excitation instruction, the insulation performance of a superconducting winding is protected, and the excitation reliability of the high-temperature superconducting phase modifier is improved.

The embodiment of the invention relates to the technical field of signal transmission, in particular to a power supply isolation circuit, a controller circuit board and a vehicle. The power supply isolation circuit comprises a signal modulation module, a signal transmission module and a signal receiving module which are electrically connected in sequence, the signal modulation module is used for modulating a PWM initial signal according to signal data to be transmitted and outputting a PWM modulation signal to the signal transmission module, the PWM initial signal is a square wave signal with a fixed duty ratio, and the signal receiving module is used for receiving the PWM modulation signal. The frequency of the PWM modulation signal and to-be-transmitted signal data have a corresponding relation, the signal transmission module comprises an isolation power supply topology unit and an isolation power supply transformer, the isolation power supply topology unit is used for performing power amplification processing on the PWM modulation signal to obtain an amplified modulation signal and transmitting the amplified modulation signal to the isolation power supply transformer, and the isolation power supply transformer is used for transmitting the amplified modulation signal to the isolation power supply transformer. The isolation power transformer is used for performing electrical isolation processing on the amplified modulation signal and outputting an isolation transmission signal, and the signal receiving module is used for receiving the isolation transmission signal and performing signal analysis processing to obtain signal data to be transmitted. By adopting the method, signal isolation transmission can be realized, and the hardware cost can be reduced.

The invention relates to a bearing controller power supply method and device, terminal equipment and a storage medium. The method comprises the steps that whether the load state of a current power supply is an overload state or not is judged in real time according to unit operation parameters of the magnetic suspension compressor; if so, adjusting the power supply state of each low-power-consumption power supply in the power supply topological structure according to the matching result between the current output power consumption of the bearing controller and the maximum power supply power consumption of each low-power-consumption power supply in the power supply topological structure, and supplying power to the bearing controller according to the target power supply. The power utilization requirements of the bearing controller in the magnetic suspension compressor under different operation conditions are met, the load regulation rate can be reduced compared with the condition that high-power power supplies are used under different operation conditions, so that the operation stability is improved, and the use cost of a plurality of low-power-consumption power supplies is far lower than that of the high-power power supplies.

The invention discloses an intelligent control method for emergency isolation equipment of a movable new energy automobile, which relates to the technical field of industrial control, and comprises the following steps: constructing a three-layer control framework, and modeling an execution area partition and a visual partition of an emergency isolation cabin to obtain an integrated model; setting a guarding mode in a central control room by using an integrated model, comprehensively analyzing a multi-source fire monitoring result, and generating a danger partition table and a temperature curve group; and calling the power supply topology of the integrated model, and executing high-low voltage time sequence control on the target isolation cabin in combination with the dangerous partition table and the current guarding mode to form an isolation control sequence. Safety time sequence control of vehicle high-voltage power-off, vehicle low-voltage keeping and isolation cabin high-low-voltage power-on is executed on the target isolation cabin in combination with the power source topology, and risks caused by blind injection and misoperation when a fire behavior is not completely recognized or people are not evacuated are avoided.

The invention provides a modularized, low-inductance and high-reliability composite pulse power supply assembly, so as to solve the problems of complex system, high cost, limited performance, switching disturbance and the like caused by discrete design of a fast pulse power supply and a quasi-steady-state power supply in an existing theta-pinch device. Through standardized and integrated mechanical and electrical design, hardware unification of two power supply topologies is realized, loop parasitic inductance is reduced, seamless transition from pulse to steady-state current is ensured, and finally the core targets of improving plasma experiment performance, simplifying system architecture and reducing full life cycle cost are achieved.

The invention discloses a fault isolation method, system and device for power Internet of Things equipment and a medium, and the method comprises the steps: obtaining an electrical signal of each piece of power equipment in the power Internet of Things, and determining a fault device and a fault position based on the electrical signal; based on the power topological structure diagram, determining the number of first communication paths and the number of second communication paths corresponding to the fault equipment and the fault communication nodes, and based on the number of the first communication paths and the number of the second communication paths, determining an isolation boundary node set for isolating the fault equipment, calculating and simulating the change quantity of a communication path of each node in the power Internet of Things after the isolation boundary node set is disconnected; and adjusting the isolation boundary node set based on the comparison result of the variable quantity of each communication path and the preset threshold value so as to obtain the target isolation range meeting the preset condition, and isolating the power equipment in the target isolation range, so that the accuracy of isolation range delimitation after the fault occurs can be improved.

The invention relates to the technical field of electric power digital data processing, in particular to a power failure range analysis method based on address-electric power topology matching. The power failure range analysis method comprises the following steps: carrying out preprocessing, word segmentation, standardized matching and completion on a user fault reporting address, and outputting a standardized address text with a uniform format; based on the standardized address and the power GIS system data, constructing a dynamic topological association graph; user fault reporting density and equipment real-time state data are fused, a fault point is positioned through a dynamic inference rule, and a power failure range is extracted from three dimensions of equipment, users and space. According to the invention, a non-standardized user fault reporting address is converted into a matchable standard address; establishing dynamic association between the address and the power topology, and realizing multi-level tracing from the address to the equipment; and a fault point is intelligently identified by combining user fault reporting and equipment state multi-source data.