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63results about How to "Avoid power" patented technology

Charging pile dynamic power scheduling method

The invention discloses a charging pile dynamic power scheduling method, and relates to the technical field of charging pile power scheduling, and the method specifically comprises the following steps: obtaining node state information of each remaining normal node in real time, and generating a remaining bearing capability index and a load balancing index of each normal node; and constructing a power distribution evaluation model for the generated residual bearing capacity index and the load balancing index of each normal node, generating a power distribution evaluation coefficient of each normal node, analyzing the power distribution evaluation coefficient after generation, and evaluating the power bearing capacity of each normal node. Dividing each normal node into a high-bearing node, a middle-bearing node and a low-bearing node according to an evaluation result; and respectively adopting a corresponding power scheduling strategy according to a division result of each normal node. According to the invention, the problem that the power resource cannot be quickly and efficiently allocated after the fault node exits is solved, and efficient and stable dynamic balanced power scheduling and system operation are realized.
Owner:江西驴充充物联网科技有限公司

Dynamic power control method and system for electric vehicle charging pile

ActiveCN119627947AReal-time optimization of power distribution strategyImprove stabilityCharging stationsDesign optimisation/simulationControl powerElectric vehicle
The invention discloses a dynamic power control method and system for an electric vehicle charging pile, and relates to the technical field of dynamic power control of charging piles, and the method comprises the steps: carrying out the primary regulation and control and secondary regulation and control of the charging pile; obtaining a plurality of groups of different regulation and control time scale arrays; a plurality of different regulation and control time scale arrays are applied to primary regulation and control and secondary regulation and control correspondingly, and vibration evaluation data and multi-pile energy distribution uniformity data of parameter changes during primary regulation and control and secondary regulation and control are obtained; a regulation and control time scale evaluation model is constructed based on SVR; constructing a time scale-power regulation and control effect three-dimensional change curve, and performing curve analysis to obtain an improved regulation and control time scale array which is applied to charging pile power control; the problems that the system response is delayed and load fluctuation or other dynamic changes are difficult to quickly adapt due to the fact that the time scale difference of the two is not fully considered are solved.
Owner:STATE GRID SHANGHAI MUNICIPAL ELECTRIC POWER CO

Advanced power control method suitable for marine photovoltaic power generation system

The invention discloses an advanced power control method suitable for a marine photovoltaic power generation system, and relates to the technical field of photovoltaic power control, and the method comprises the following steps: collecting multi-dimensional data in a ship navigation process, and taking the multi-dimensional data as input information; and on the basis of the collected multi-dimensional data, an ultra-short-term photovoltaic power prediction model of CNN-LSTM-AM is constructed. According to the method, the CNN-LSTM-AM ultra-short-term marine photovoltaic power prediction model is introduced, the photovoltaic power generation power in the next second can be accurately predicted, power distribution is carried out according to the photovoltaic power generation power, accurate prediction and dynamic adjustment of the photovoltaic power are achieved, and the photovoltaic power generation power can be accurately predicted and dynamically adjusted by monitoring the photovoltaic power generation power, the SOC of the storage battery and the direct-current bus voltage key parameters in real time. The system can dynamically adjust the power control strategy, ensures the stable tracking of the output current of the inverter, effectively avoids the problems of power deviation and energy accumulation or insufficiency, and remarkably improves the stability and reliability of the system.
Owner:OCEAN UNIV OF CHINA

Intelligent propulsion system for ship main propulsion manipulator

The invention relates to the field of intelligent propulsion for ship main propulsion manipulators, in particular to an intelligent propulsion system for a ship main propulsion manipulator, which comprises a safety login module, a power supply module, a data acquisition module, an intelligent propulsion analysis module, an intelligent control module and a remote monitoring module, the intelligent propulsion analysis module carries out analysis according to received ship cargo weight parameter and wind speed parameter information, the power supply module dynamically adjusts power distribution according to load changes and propulsion requirements of connected ships, and the intelligent control module adjusts and controls engine output power of the ships according to received signals. The invention aims to improve the energy efficiency, enhance the ship performance and improve the safety through accurate control and dynamic adjustment, and remarkable efficiency is brought to ship operation.
Owner:JIANGSU SIBO ELECTRIC CO LTD

TGD-OFDR / OCC-BOTDR fused multi-parameter sensing system and working method thereof

The invention discloses a TGD-OFDR / OCC-BOTDR integrated multi-parameter sensing system and a working method thereof, and relates to the technical field of optical fiber sensors. The multi-parameter sensing system comprises a laser, an optical fiber coupler, an electro-optical modulator, an optical fiber circulator, an optical fiber Bragg grating, an acoustic optical modulator, an erbium-doped optical fiber amplifier, a random scrambler, a piezoelectric ceramic tube, a heating vessel, a delay optical fiber, a photoelectric balance detector, a filter and detector, a data acquisition card, a polarization controller, a direct-current power supply and a microwave source. An arbitrary waveform generator and the like. According to the invention, multiple parameters can be represented at the same time, the measuring speed is fast, and the sampling rate of the system can be effectively improved under the condition that sensing parameters are the same; the method has the advantage of high spatial resolution; the sensor has the advantages of high fusion and low cost, can realize simultaneous measurement of vibration and temperature / strain through single sensing, and is high in fusion and effective in cost control.
Owner:HARBIN INST OF TECH +1

Rotor structure of high-speed motor

The utility model provides a rotor structure of a high-speed motor, which relates to the technical field of motors and comprises rotor punching sheets, lugs, a rotor core, positioning bulges, magnetic steel mounting grooves and magnetic steel. The number of the rotor punching sheets is multiple, and each rotor punching sheet is uniformly provided with a plurality of lug sheets at intervals along the circumferential direction of the rotor punching sheet. The end part of each lug is of a hook-shaped structure which is bent towards one side, and the hook-shaped structures of two adjacent lugs on each rotor punching sheet are mutually symmetrical; the plurality of rotor punching sheets are mutually laminated at a preset angle along the circumferential direction to form a rotor iron core, the plurality of lug sheets of each rotor punching sheet are mutually laminated along the axial direction to form a plurality of positioning bulges, and magnetic steel positioning grooves are formed among the plurality of positioning bulges along the axial direction of the rotor iron core; and the plurality of magnetic steels are mounted in the plurality of magnetic steel mounting grooves along the rotor core shaft in a one-to-one correspondence manner. The magnetic steel is hooked through the positioning protrusions in the high-speed rotation process of the motor, and the problem that the motor power is reduced or fails due to the fact that the magnetic steel flies out due to centrifugal force generated by high-speed rotation motion is solved.
Owner:SHAANXI GU HIGH-TECH CO LTD

Multi-inverter parallel improved reactive droop control method and system

The invention discloses a multi-inverter parallel connection improved reactive droop control method and system, and relates to the technical field of inverter operation voltage regulation, and the method comprises the steps: obtaining first data of the output side of an inverter, and calculating second data outputted in real time according to the first data of the output side of the inverter; performing droop control on the second data to obtain given values of frequency and voltage, obtaining PWM given voltage through voltage and current double-closed-loop control according to the given values of the voltage, and performing dynamic adjustment on the PWM given voltage through energy storage adjustment; the phase of the inverter 1 is collected in real time through SOGI-PLL pre-synchronization and serves as phase input of the inverter 2. Through the improvement of the variable reactive droop coefficient, the drop phenomenon of the system voltage is relieved, the stability of the output voltage of the inverter is kept, the influence of voltage fluctuation on the system is reduced, and the electric energy quality of the system is improved.
Owner:GUIZHOU POWER GRID CO LTD

Direct current side coupling type super capacitor-battery hybrid energy storage system

The invention relates to a direct current side coupling type super capacitor-battery hybrid energy storage system. According to the energy storage system, a super-capacitor module and a battery module are directly connected on the direct current side through a bidirectional DC / DC converter, the super-capacitor module is connected with a power grid through a current source type converter, the battery module is connected with the power grid through a voltage source type converter, and a modularized and extensible topological structure is formed. The system has multiple differentiated working modes, cooperative efficient operation of the super-capacitor and the battery can be achieved according to working conditions, high-frequency / short-time power is preferentially borne by the super-capacitor, and the battery is responsible for steady-state energy adjustment. And meanwhile, by virtue of the boosting capability of the current source type converter, the super capacitor can support the power grid in a short time and strong manner in a deep discharging manner. And the battery module charges the super capacitor module through the bidirectional DC / DC converter, so that the influence of frequent charging of the super capacitor on the grid-side electric energy quality is reduced. The method can effectively reduce the aging loss of the battery, improves the energy storage utilization efficiency and the power grid friendliness, assists the new energy consumption and the safe and stable operation of the power grid, and has economic and social benefits.
Owner:TIANJIN UNIV

Vehicle engine warming control method and device, vehicle and storage medium

The invention relates to the technical field of vehicles, in particular to a vehicle engine warm-up control method and device, a vehicle and a storage medium, and the method comprises the steps that under the condition that it is detected that the vehicle is in a high-voltage power-on state, the target water temperature of an engine is obtained; when it is detected that the target water temperature meets the preset warming-up condition, a warming-up starting request of the engine is sent, the engine is controlled to enter the preset engine warming-up working condition based on the battery available discharge power and the battery temperature, and the warming-up required power of the engine is determined according to the warming-up starting request duration corresponding to the target water temperature; and controlling the vehicle to warm up the engine according to the warm-up demand power. According to the embodiment of the invention, when the target water temperature meets the warming-up condition, the warming-up starting request of the engine can be sent, and the engine warming-up working condition is entered, so that the vehicle is controlled to warm up the engine, and the economical efficiency and the safety of the vehicle are effectively improved.
Owner:CHINA FAW CO LTD

Multi-color-temperature multi-power switching circuit compatible with silicon controlled rectifier dimming

The utility model relates to the technical field of silicon controlled rectifier dimming, in particular to a multi-color-temperature multi-power switching circuit compatible with silicon controlled rectifier dimming, which comprises a rectifying and filtering module, a silicon controlled rectifier dimming constant-current module, an MCU (Microprogrammed Control Unit) linear power supply module, a power failure detection module, a color temperature control module, a double-path PWM (Pulse-Width Modulation) dimming constant-current module and a load module, the input end of the power failure detection module is electrically connected with the rectification filtering module and used for detecting the power failure condition of the rectification filtering module, and the output end of the power failure detection module is electrically connected with the analog input end of the color temperature control module. The two pulse width modulation ends of the color temperature control module are electrically connected with the two pulse width modulation ends of the double-path PWM dimming constant-current module in a one-to-one correspondence manner, so that not only can a silicon controlled rectifier dimmer be compatible for brightness adjustment, but also the color temperature and the power can be flexibly and conveniently switched at any time; and meanwhile, the problem that the color temperature and the power are switched mistakenly due to the fact that a switch is turned on for several times due to mistakes in the actual use process is solved, and then the use experience of customers is improved.
Owner:XIAMEN TOPSTAR LIGHTING

Method and apparatus for bi-directional power coupling of an electromagnetic power network to an electromagnetic transient load based on a reference flux state

PendingCN122508943AAvoid being unable to distinguish input functionsavoid power
The application discloses a kind of based on benchmark magnetic flux state electromagnetic power network and electromagnetic transient load two-way power coupling method and device, it is related to pulse power network, electromagnetic transient load and plasma load coupling simulation technical field.The method includes: reading external electromagnetic power network state and magnetic flux state;Candidate external response is generated;Magnetic update entry arbitration is executed to candidate external response;Forming to be accepted magnetic flux state;From the projection of to be accepted magnetic flux state, a plurality of loop magnetic chains are obtained, and to be accepted counter electromotive force and network residual error are generated.Through the magnetic chain calculated by sharing magnetic flux state, external electromagnetic power network does not need to maintain second set of magnetic field state, and power closure, magnetic chain residual error and magnetic update constraint can be accepted simultaneously.
Owner:HUNAN TAIGUAN TECH CO LTD

Cooperative control method and device for offshore wind power flexible direct current system

The invention discloses an offshore wind power flexible direct current system cooperative control method and device, particularly relates to the technical field of offshore wind power, and comprises an offshore wind power flexible direct current system cooperative control method which comprises a master-slave control cooperative method. A voltage margin control cooperation method; a droop control cooperation method; the hierarchical control cooperation method further comprises an offshore wind power flexible direct current system cooperation control device which comprises a master-slave control module, a master control station control unit and a slave control station control unit, and a communication unit is used for information interaction between the master converter station and the slave converter station. The method deals with the conditions of offshore wind power plant power fluctuation, alternating current power grid disturbance and the like, avoids large voltage fluctuation and power oscillation, guarantees that the system can still operate basically under the fault condition, meanwhile, achieves optimal distribution of power, provides reliable technical support for large-scale development and utilization of offshore wind power, assists in improving the grid-connected capacity and energy utilization efficiency, and has a wide application prospect. The power generation cost is reduced, and sustainable development of the offshore wind power industry is promoted.
Owner:HULUDAO POWER SUPPLY COMPANY OF STATE GRID LIAONING ELECTRIC POWER

A photovoltaic inverter layered distributed installation layout optimization method facilitating operation and maintenance and upgrading

PendingCN122225528ASave inspection timeAnnual operation and maintenance labor costs reducedSingle network parallel feeding arrangementsEmergency power supply arrangements
The application discloses a photovoltaic inverter layered distributed installation layout optimization method convenient for operation and maintenance and upgrading, constructs a three-layer linkage architecture of a centralized management layer, a regional control layer and a device execution layer, the regional control layer automatically scans a photovoltaic inverter NFC electronic tag through a dynamic topology identification mechanism, realizes plug-and-play of the device and second-level topology updating, a master and standby regional control unit adopts an incremental snapshot synchronization technology, completes non-perception switching within millisecond-level time, and ensures continuity of control instructions, the system adopts an operation and maintenance efficiency index dynamic optimization algorithm, forms an adaptive optimal layout scheme, a five-dimensional health degree evaluation model is constructed by combining DC side attenuation and MPPT deviation, early warning and pre-maintenance of device failure are realized, a time-space separation gray upgrade strategy combined with power generation power prediction is deployed, batch upgrading is realized, and automatic function verification and rollback are realized, and zero risk in the upgrading process is ensured. The application solves the technical problems of static rigidity of a traditional layout and concentrated upgrading risks.
Owner:郑州祥和电力设计有限公司

A multi-dimension clamping mechanism, system and method for machining

PendingCN122274710AEnsure fitfixedMachiningContact sensor
This invention discloses a multi-dimensional clamping mechanism, system, and method for machining, including a reference plate with an electromagnetic chuck on it. The electromagnetic chuck contacts the outer wall of a workpiece and magnetically attracts the workpiece. The clamping mechanism includes a working shaft, a sliding sleeve, and a cooperating plate. The centerline of the reference plate overlaps with the centerline of the working shaft. A guide rail is provided on the working shaft, and the sliding sleeve is disposed on the guide rail, moving along the guide rail to approach or move away from the reference plate. The cooperating plate is sleeved on the sliding sleeve and has a functional block corresponding to the electromagnetic chuck. A clamping assembly is formed by one functional block and the corresponding electromagnetic chuck. A contact sensor is provided on the functional block. When the functional block contacts the workpiece, the contact sensor sends a signal to the corresponding electromagnetic chuck control unit to control the magnetic attraction timing of the electromagnetic chuck. This invention aims to improve the problem that the clamping point of the clamping surface is difficult to adjust, and that there are significant limitations when temporarily clamping non-coplanar areas of irregular workpieces.
Owner:CHENGDU TECHNICIAN COLLEGE (CHENGDU VOCATIONAL & TECH COLLEGE OF IND & TRADE CHENGDU ADVANCED TECH SCHOOL CHENGDU RAILWAY ENG SCHOOL)

Atomization device and atomization equipment

The utility model relates to the technical field of electronic atomization, in particular to an atomization device and atomization equipment, and the atomization device comprises a shell, an atomizer, a mounting seat, a control circuit board and an air inlet control assembly; an air inlet channel communicated with the air inlet end of the atomizer is formed in the mounting seat; the air inlet control assembly comprises an adjusting part and a power control switch, and the adjusting part is arranged at the air inlet and movably connected with the shell; the adjusting piece comprises a covering part and a connecting part, and the connecting part is connected with the power control switch; the adjusting part can move relative to the shell, due to the connection relation of the adjusting part, the air inlet channel and the power control switch, the position of the adjusting part relative to the shell is adjusted, synchronous adjustment of the adjusting part on the air inlet amount and the operation power of the atomizer can be achieved at a time, and therefore the problem that the air inlet amount is not matched with the operation power is effectively avoided; the service life of the atomization equipment is prolonged, and the user experience is improved.
Owner:SHENZHEN GEEKVAPE TECH CO LTD

A lean-burn hydrogen engine system and control method thereof

The present application relates to a lean-burn hydrogen engine system and a control method thereof, wherein two intake pipes are connected in parallel between an outlet of an electric compressor and an inlet of an intercooler, and the intercooler is connected to the inlet of the hydrogen engine; the intake pipe comprises a flow valve and a mechanical compressor connected in sequence; two exhaust gas boost pipes are connected in parallel to a vehicle aftertreatment system, and are both connected to an exhaust gas recirculation pipe connected to the inlet of the hydrogen engine, and a high-pressure EGR valve is provided on the exhaust gas recirculation pipe; a vehicle ECU is connected to the electric compressor, the flow valve and the high-pressure EGR valve signal; the electric compressor replenishes the intake volume of the two intake pipes to meet the air-fuel ratio requirement of the hydrogen engine, and the combustion state in the cylinder of the hydrogen engine is adjusted by setting up two exhaust gas boost pipes and exhaust gas recirculation technology, in combination with the electric compressor and the flow valve, to avoid abnormal combustion problems that frequently occur under medium and high loads, taking into account both high and low speeds, and also having the effect of reducing the requirement for installation space.
Owner:DONGFENG COMML VEHICLE CO LTD

Method and system for automatically adjusting laser power in remote foreign matter removing process of power transmission line

The invention discloses a laser power automatic adjusting method and system in a remote foreign matter removing process of a power transmission line, and the method comprises the steps: recognizing and positioning a foreign matter through an inspection image, analyzing the spatial position relation between the foreign matter and a power transmission line, preliminarily judging the contact state of the foreign matter, and outputting a contact risk level; analyzing the foreign matter, and constructing an initial thermal coupling risk parameter based on the contact risk level; controlling the laser to perform short-time irradiation on the foreign matter for a preset time length at the tentative power, and synchronously collecting thermal response characteristic information generated by the surface of the foreign matter in the irradiation process; based on the thermal response feature information, comparing with a preset thermal response reference model, dynamically judging the actual thermal coupling state between the foreign matter and the power transmission conductor, and correcting the initial thermal coupling risk parameter in real time according to a judgment result to obtain a corrected thermal coupling risk parameter; and according to the corrected thermal coupling risk parameter, gradually increasing the laser power of the laser to an effective clearing power interval so as to complete foreign matter clearing.
Owner:北京北创芯通科技有限公司

Cooler assembly arrangement for a motor vehicle having a plurality of heat exchanger and motor

The invention relates to a cooler assembly arrangement (10) for an internal combustion engine-driven or at least partially electrically driven motor vehicle, comprising: a first heat exchanger (12) which is fluidically connected to a coolant circuit (14) of the motor vehicle; a second heat exchanger (16) which is fluidically connected to a refrigerant circuit (18) of the motor vehicle; a third heat exchanger (20) which is fluidically connected to a refrigerant circuit (18) of the motor vehicle; and an air supply device (22) which is designed to guide air, in particular ambient air, to the first heat exchanger (12), the second heat exchanger (16) and the third heat exchanger (20). According to the invention, the second heat exchanger (16) and the third heat exchanger (20) are arranged in series with respect to the main air flow direction (HS) in the air supply device (22). The invention further relates to a motor vehicle having such a cooler assembly arrangement (10).
Owner:AUDI AG

A neural network-based secondary frequency control method and device and storage medium

The application discloses a kind of secondary frequency control method, device and storage medium based on neural network, belong to microgrid control technical field, method includes: obtaining the rated angular frequency of distributed microgrid preset, and the active power of each distributed power generation unit;Active power is respectively input into the corresponding pre-trained neural network, and the frequency compensation of each distributed power generation unit is output, the frequency deviation caused by droop control is compensated, so that the angular frequency of distributed microgrid output recovers to the rated angular frequency preset;Corresponding pre-trained neural network refers to the neural network that each distributed power generation unit corresponds one training process and is added privacy protection processing, so that attacker cannot infer whether single sample is used for the training of neural network according to neural network output result.The application can improve the security and stability of microgrid, solve the problem that traditional secondary frequency control method exists privacy leakage risk and security risk.
Owner:DONGHUA UNIV

Signal measurement device and method, storage medium and computer program product

The invention relates to the technical field of communication, and provides a signal measurement device and method, a storage medium and a computer program product, and the device comprises a pulse generation module, a first dispersion module, a signal modulation module, a second dispersion module and a signal detection module which are connected in sequence. The signal modulation module comprises a dual-polarization dual-drive Mach-Zehnder modulator; the first dispersion module is used for performing time domain stretching on the optical pulse generated by the pulse generation module; the signal modulation module is used for modulating the stretched optical pulse through the dual-polarization dual-drive Mach-Zehnder modulator based on a microwave signal received from an antenna; the second dispersion module is used for performing time domain stretching on the modulated light pulse obtained by modulation; and the signal detection module is used for performing signal detection on the stretched modulated light pulse to obtain the frequency and the angle of arrival of the microwave signal. The stability of signal measurement can be improved.
Owner:CHINA MOBILE GROUP ZHEJIANG +3

Intelligent heat exchange unit

The utility model relates to heat exchanger unit technical field especially intelligent heat exchanger unit, its technical scheme includes: box, the finned tube bundle is fixedly installed in the box, the first installation groove is installed in the box one end opening and intercommunication, the air injection fan is fixedly installed through the mounting bracket at the first installation groove, the air injection fan installation place's box bottom is provided with the air inlet, the air injection fan is used for conveying gas to the finned tube bundle, the second installation groove is installed in the box other end opening and intercommunication, the air exhaust fan is embeddedly installed in the second installation groove, the air exhaust fan is used for discharging the gas in the box, control assembly is installed on the box, control assembly is used for controlling the output power of air injection fan and air exhaust fan. The utility model has the advantage that adjusts the fan power under the premise of guaranteeing the heat exchange efficiency, solves the problem that the existing heat exchanger unit fan is easy to overload and has the potential safety hazard.
Owner:ANHUI MAYA INFORMATION TECHNOLOGY DEVELOPMENT CO LTD

A method and apparatus for wind drying control of a generator excitation DC bus

The application discloses a kind of generator excitation DC bus air drying control method and device, it is related to generator air drying technical field, including obtaining generator past state information and corresponding excitation circuit air passage past temperature and humidity information, and define generator state and excitation circuit air passage temperature and humidity state;Real-time state information and corresponding real-time excitation circuit air passage temperature and humidity information of generator are obtained, and based on generator state and excitation circuit air passage temperature and humidity state determine generator real-time state and temperature and humidity real-time state;According to generator real-time state and temperature and humidity real-time state control air door opening degree and dry hot air device control parameter carries out air drying process;In air drying process, while monitoring real-time excitation circuit air passage temperature and humidity information, and adjust air door opening degree and dry hot air device control parameter.Guarantee the precision of dry hot air device control, avoid the problem of power being too high or too low, improve the adaptability of air drying control.
Owner:HAIMEN POWER PLANT OF HUANENG (GUANGDONG) ENERGY DEV CO LTD

Range extender comprehensive control method and device, computer equipment and storage medium

The embodiment of the invention discloses a range extender comprehensive control method and device, computer equipment and a storage medium. The method comprises the following steps: detecting the stability of an acceleration pedal to obtain a first determination result; when the first determination result is that the acceleration pedal is stable, initial information is obtained, and the initial information comprises an original power request of a range extender control unit APU, a battery SOC, a vehicle speed and a driving power request; sOC following, fixed-point power following and NVH power limiting processing are carried out to obtain a processing result; calculating the limited power of the APU; determining whether the APU needs to be started or not to obtain a second determination result; and performing APU working state hopping and APU power demand arbitration to obtain actual APU request power. By implementing the method provided by the embodiment of the invention, the problem that the electric quantity of the battery of the range extender is exhausted can be avoided, the unstable noise of the range extender is reduced, and the driving performance and the riding comfort are ensured while the fuel economy is improved.
Owner:ZHEJIANG INTELLIGENT TRANSPORTATION TECHNOLOGY INNOVATION CENTER +1

A DC bus stable control method and system for bilateral power grid coupling

PendingCN122660211AExactly matching needsEnsure dual stabilityLoop controlControl signal
The application provides a DC bus stable control method and system for bilateral power grid coupling, and relates to the technical field of power grid control. The method comprises the following steps: collecting real-time data of the bilateral power grid to obtain a plurality of power grid information, including voltage information and power information; performing phase-locked loop processing to generate power grid phase parameters, performing coupling interaction analysis, and constructing a DC bus voltage control model; performing inner and outer loop control to generate bilateral power reference values, performing regulation and control analysis on the bilateral power grid to generate initial regulation and control signals; performing bidirectional regulation, performing incremental learning, generating bilateral power reference optimization values, dynamically correcting the initial regulation and control signals, and constructing a power grid control scheme. The application solves the technical problem that the prior art mostly uses fixed reference values for DC bus control, fails to dynamically adjust according to the actual operation state of the power grid, and reduces the regulation accuracy of the power grid, thereby affecting stability and reliability.
Owner:WUXI ENOW ELECTRIC POWER EQUIP

Megawatt super-power liquid cooling charging seat

ActiveCN224184123Upromote absorptionSolve the technical problem of inefficient heat dissipationCharging stationsCooling/ventilation/heating modificationsThermodynamicsElectric current flow
The utility model provides a megawatt super-power liquid cooling charging stand, which comprises a charging stand main body and a liquid cooling assembly, two power terminals are arranged in the charging stand main body, and a first power conversion terminal is connected with a cable; the liquid cooling assembly comprises a heat conduction box, a first liquid cooling pipe and a second liquid cooling pipe, the heat conduction box is in contact with the end face of the power terminal, the first liquid cooling pipe is in direct contact with a cable core of one cable, and the second liquid cooling pipe is in direct contact with a cable core of the other cable; the first liquid cooling pipe and the second liquid cooling pipe are communicated through the heat conduction box to form a circulation loop of cooling liquid. The heat conduction box is in direct contact with the end face of the power terminal, the liquid cooling pipes are directly attached to the wire core, the first liquid cooling pipe, the heat conduction box and the second liquid cooling pipe are communicated in sequence to form a closed cooling loop, cooling liquid can circulate continuously, and the stable cooling function is achieved. Therefore, the technical problem that heat generated by the megawatt-level power charging seat in the high-current transmission process cannot be efficiently dissipated is solved.
Owner:SHENZHEN YONGGUI TECH CO LTD

Method and device for evaluating output power of power amplifier

The invention relates to the technical field of electromagnetism, in particular to a method and device for evaluating the output power of a power amplifier, and the method comprises the steps: obtaining a target parameter set according to an initial parameter value, the target parameter set comprising a plurality of frequency points and parameters corresponding to each frequency point in the plurality of frequency points; obtaining the input power of each frequency point according to a target field intensity value and the parameter corresponding to each frequency point; and performing signal compensation processing on the input power of each frequency point to obtain power amplifier output power of each frequency point. According to the method, the power amplifier output power corresponding to each frequency point can be accurately calculated, the deviation of the power amplifier output power is reduced, the accuracy and the effectiveness of evaluating the power amplifier output power are ensured, the efficiency can be improved, the energy consumption is reduced, the cost is reduced, and the economical efficiency and the reliability of the whole evaluation process are improved.
Owner:JS TONSCEND CORP

Power distribution network coordination control method and system based on multiple flexible loads

The invention relates to the technical field of power system operation control, in particular to a power distribution network coordination control method and system based on multiple flexible loads, and the method comprises the steps: collecting the power data of each flexible load and each distributed power supply in a power distribution network in real time; equally dividing each day into each time period, acquiring a distribution characteristic array and a power fluctuation degree of each load in each time period, acquiring a reference power utilization difference factor of each load in each time period, and acquiring a characteristic vector of each load in each period; classifying all loads in each period; and acquiring the power demand degree of all flexible loads in each type in all days in each period in each same time period, acquiring the output characteristic value of each distributed power supply in each time period in each day in the next period, and acquiring the power upper limit of each load in the next time period of each time period in each day in the next period. According to the method, the accuracy of flexible load classification is improved, a reasonable power adjustment strategy is formulated for the flexible loads, and the source load matching degree of the power distribution network is improved.
Owner:STATE GRID SHANXI COMPREHENSIVE ENERGY SERVICE CO LTD +1

A data center power load elasticity allocation system

PendingCN122512446AQuick positioning adjustable rangeavoid delay
This invention discloses a data center power load elastic allocation system, relating to the field of data center power load management technology. It includes: an event queue module, which establishes a spatiotemporally correlated event queue of the current power load topology and generates a power load elastic container mapped to the spatiotemporally correlated event queue; a strategy generation module, which generates elastic allocation strategies based on the spatiotemporally correlated event queue and the power load elastic container, including voltage and frequency adjustment strategies, server sleep / wake-up strategies, and load migration strategies; a priority module, which dynamically prioritizes the elastic allocation strategies; a conflict resolution module, which selects a dominant strategy based on the dynamic priority ranking result and then resolves conflicts between the dominant strategy and other strategies; and an elastic execution module, which executes the elastic allocation based on the conflict resolution result. This system achieves elastic power load allocation based on current and power monitoring data at the rack end, effectively avoiding the risk of rack power exceeding limits and eliminating resource conflicts between adjustment actions.
Owner:INFORMATION & COMM CO OF STATE GRID SHAANXI ELECTRIC POWER CO LTD

A black start power equalization control method and system for energy storage

ActiveCN122178411BAccurate calculation of power output ratioHigh precision
This invention relates to the field of power system energy storage technology, and particularly to a black-start power equalization control method and system for energy storage. The method includes identifying the internal resistance abrupt change inflection point of the battery energy storage module based on discharge depth segment distribution data, and determining the polarization steady-state window based on the internal resistance abrupt change inflection point; detecting the droop slope oscillation risk based on transient internal resistance sampling data and the polarization steady-state window, and determining the internal resistance sampling stability interval; after the flexible boost energy storage system enters the black-start operation mode, establishing a linkage mapping relationship between the real-time value of the droop slope and the real-time charge data based on the internal resistance sampling stability interval, dynamically compensating for the nonlinear drift of the internal resistance of each battery energy storage module, and obtaining the power output ratio of each battery energy storage module in the black-start operation mode. This invention improves the power distribution stability of the energy storage system under black-start and emergency conditions by dynamically identifying the internal resistance abrupt change inflection point and establishing a linkage mapping compensation between the droop slope and the charge.
Owner:国网浙江省电力有限公司永嘉县供电公司 +1

Weak network under the network energy storage frequency adaptive adjustment method and system

The application relates to the technical field of frequency regulation, in particular to a weak-network-construction energy storage frequency self-adaptive regulation method and system, and the following scheme is provided: a node state diagram reflecting device state and coupling relationship is constructed in an island operation stage, main network phase characteristics are extracted based on a common coupling point measurement signal when a grid-connected condition is met, a logical main network node carrying a phase corridor attribute is introduced, and controlled injection of a main network phase reference is realized. Further, a phase convergence diagram is formed according to traction compatibility judgment and diagram reconstruction mechanism, a traction node is subjected to competitive inhibition update through a consistency evaluation index, a grid-connected structure diagram is generated, and thus coordinated regulation of frequency parameters of multiple network-construction energy storage devices under a weak network condition is realized, and stability and controllability of a regrid process are improved.
Owner:NANJING JIASHENG ELECTROMECHANICAL EQUIP MFG CO LTD