22results about How to "Avoid power" patented technology

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

This application provides an electric two-wheeler and a wireless charging control method for the electric two-wheeler. The method involves electrically connecting the control component of the battery management system with a data acquisition component and a step-down module. The step-down module is also electrically connected to the power battery and the wireless charging bracket, forming a closed power supply and control loop. The data acquisition component collects the vehicle's operating parameters in real time. The control component obtains the current vehicle operating parameters and identifies the current vehicle state from a preset set of vehicle states based on these parameters. Based on a preset correspondence between the current vehicle state and multiple output levels of the step-down module, the control component determines the current output level and controls the step-down module to switch to the current output level. This allows the step-down module to convert the DC power output from the power battery into a current output voltage and current that matches the current vehicle state, providing a stable supply to the wireless charging bracket and improving the stability and continuity of the wireless charging.

The utility model belongs to the electrical design technical field, specifically discloses automatic switching circuit of low -voltage single bus reactive power compensation device, the current transformer 1BC2 and 2BC2 are installed on the mother circuit of circuit, and the closed loop is formed in series with power factor controller 1PFC after the parallel connection of current transformer 1BC1 and 1BC2 output, and power factor controller 1PFC is electrically connected with the reactive power compensation device on the section I bus, the closed loop is formed in series with power factor controller 2PFC after the parallel connection of current transformer 2BC1 and 2BC2 output, and power factor controller 2PFC is electrically connected with the reactive power compensation device on the section II bus, the utility model has the characteristics of simple circuit, less investment, safe and reliable.

The present invention relates to a V8 engine (10) for a motor vehicle having eight cylinders (1-8) arranged in two cylinder banks (16, 18), each containing four cylinders (1-4, 5-8), such that the first cylinder bank (16, 18) has a first cylinder, a second cylinder, a third cylinder, and a fourth cylinder of the cylinders (1-8). The second cylinder bank (16, 18) has a fifth cylinder, a sixth cylinder, a seventh cylinder, and an eighth cylinder of the cylinders (1-8). The cylinder banks (16, 18) are arranged side by side along a straight line (22) perpendicular to the observation direction (20) extending from the front side (VS) of the V8 engine (10) toward the output side (AS) of the V8 engine (10) which is arranged opposite to the front side (VS) along the longitudinal direction (24) of the V8 engine (10).

This invention relates to the field of equipment control technology and discloses a cell membrane potential regulator and its control method. The method involves: detecting the load resistance of the far-infrared heating pad and the coil impedance of the magnetic field pad in a dual-effect emitting pad, and confirming whether the device is successfully connected; if the device is successfully connected, the far-infrared heating pad is driven to perform pulse heating to establish a far-infrared temperature field, and AC power is output to the magnetic field coil, which is isolated from the far-infrared heating pad by an aluminum foil shielding layer inside the dual-effect emitting pad, to activate the biomagnetic field; based on the far-infrared temperature field and the biomagnetic field, a negative ion generator is driven to release negative ions; when there is no button operation for a continuously preset sleep judgment duration, the duty cycle of the PWM control signal and the AC voltage amplitude are adjusted; when the timer ends, the negative ion generator, the magnetic field coil, and the far-infrared heating pad are sequentially turned off. This invention achieves synergistic optimization rather than simple superposition, ensuring the safety of the device and improving user comfort and reliability.

The invention relates to the technical field of power supply temperature control, in particular to a mobile power supply and data line temperature control transmission system and method, and the system comprises a main control software unit, a multi-channel temperature sensing module, an intelligent power adjustment module, an active heat dissipation execution module, and a data line integrated communication and recognition module. The main control software unit runs in a microcontroller built in the mobile power supply or a firmware / software module cooperatively working with an application processor; the main control software unit receives and fuses data uploaded by the multi-channel temperature sensing module and the data line integrated communication and identification module in real time, makes a decision through a built-in temperature management strategy algorithm, and dynamically adjusts the output power of the intelligent power adjustment module and / or starts the active heat dissipation execution module. In the whole process of high-power fast charging or external high-power discharging, temperature rise can be effectively restrained, and long-time and large-amplitude power limitation caused by temperature contact is avoided.

The invention provides a self-adaptive ringing system based on an SLIC and a telephone system. Expected ringing amplitude and frequency parameters are configured for a client, and whether self-adaptive ringing is enabled or not is selected through a self-adaptive ringing enabling signal; if self-adaptive ringing is enabled, configuring delay time after oscillation starting, step length of self-adaptive amplitude reduction and error tolerance of peak detection; and if the self-adaptive ringing is not enabled, the SLIC chip generates sine waves according to the configured ringing amplitude and frequency after receiving the oscillation starting command. And after the start oscillation exceeds the delay time, when the ringing phase is 90 degrees and 270 degrees, detecting whether the error between the peak value of the ringing current signal and the expected peak value exceeds the error tolerance or not. And if yes, reducing the ringing amplitude by the step length of self-adaptive amplitude reduction at 180-degree and 360-degree phases, and recalculating the expected peak value after the amplitude reduction until the detected ringing signal peak value and the expected peak value are within the error range.

The application provides a micro-grid grid-connected and off-grid control system, through constructing a gated loop unit timing prediction model, accurately predicting net load and power distribution network demand in multiple time periods in the future, and simultaneously minimizing power purchase and sale cost, line loss and power supply power shortage by using an improved NSGA-II multi-objective optimization algorithm, so that the economic efficiency and reliability are cooperatively optimized; a hierarchical architecture combining a regional coordination control layer and a micro-grid local control layer is used, so that the global optimization and dynamic response performance are considered; N-1 safety check and virtual synchronous machine pre-synchronization control are introduced, so that the problems of voltage out-of-limit and frequency instability caused by grid-connected and off-grid operation are effectively avoided; through a digital twin three-dimensional dynamic display module, power flow and switch state are directly presented, so that the situation awareness ability of operation and maintenance personnel to complex micro-grid groups is significantly improved; meanwhile, an incremental learning mechanism is used to continuously update the prediction model, so that the system can adapt to long-term changes of load and power generation.

The application discloses a kind of based on reinforcement learning's rotary power flow controller parameter self-adapting adjustment method, comprising the following steps: step S1, constructs RPFC double-loop electromechanical coupling dynamic model including power loop and angle loop;Step S2, based on DDGP algorithm, construct Actor-Critic model, train Actor-Critic model, obtain trained Actor-Critic model;Step S3, the PID adjustment parameter of RPFC double-loop electromechanical coupling dynamic model is obtained using trained Actor-Critic model output;Step S4, in power loop, according to PID adjustment parameter, calculate active reference current command value and reactive reference current command value, and conversion obtains corresponding target angle reference value, in angle loop, according to target angle reference value, drive RPST action in RPFC;According to the method, the wear and tear of mechanical structure can be avoided, the quick tracking of target power angle reference value is realized, and the quick response of system is guaranteed.