314 results about "Power parameter" patented technology

The invention discloses a non-contact electric power parameter measurement method, system and device, and a storage medium. The method comprises the steps of obtaining a first output voltage signal and a second output voltage signal generated by induction of a space electric field around a to-be-measured wire; establishing an equation set of a to-be-measured voltage phasor based on the first output voltage signal and the second output voltage signal, and solving the equation set of the to-be-measured voltage phasor to obtain a parameter of the to-be-measured voltage; acquiring a magnetic field measurement signal generated by a space magnetic field around the to-be-measured wire; and establishing an equation set of the current to be measured according to the magnetic field measurement signal, and solving the equation set of the current to be measured to obtain parameters of the current to be measured, thereby effectively solving the problem that the gain and the phase shift are unknown after the probe is connected.

The invention belongs to the technical field of power system measurement, and relates to a three-phase power parameter wireless synchronous measurement and vector analysis method and system, and the method comprises the following steps: generating and broadcasting a synchronous pulse code containing triggering phase information; generating a predicted phase angle; obtaining a comprehensive phase deviation value; performing dynamic feature separation processing on the comprehensive phase deviation value to generate a slowly-varying propagation delay feature and a transient prediction error feature; injecting the prediction error characteristics into a local phase predictor for calibration; acquiring phase voltage / current data based on the compensated sampling time, and calculating a fundamental wave effective value and a phase angle relative to a local calibration time reference; and packaging the fundamental wave effective value, the phase angle and the local timestamp into a simplified data packet and transmitting the simplified data packet to an analysis terminal. According to the method, the problems that in a traditional mode, satellite time service rejects signals in a substation indoor or underground scene, and synchronization interruption is easily caused by electromagnetic interference are solved.

The invention discloses a 10kV distribution transformer on-load voltage regulation control method and system, and relates to the technical field of transformer on-load voltage regulation, and the method comprises the steps: collecting the three-phase voltage and current of a low-voltage side of a distribution transformer and a tap switch gear signal, and loading a preset voltage regulation control mode and an oscillation region parameter; based on the acquired three-phase voltage and current of the low-voltage side of the distribution transformer and the tap switch gear signal, calculating a feeder comprehensive impedance parameter and a load reactive power parameter, and outputting a transformer operation state index; according to the transformer operation state index, the voltage regulation control mode and the oscillation area rule, current voltage out-of-limit and reactive power deviation are judged, and a voltage regulation strategy triggering instruction is generated according to the judgment result; and calculating upper and lower limit values of feed line correction voltage based on the voltage regulation strategy trigger instruction, and controlling the tap switch to execute voltage regulation action. According to the method, a combined calculation scheme of feeder comprehensive impedance and load reactive power is fused, and dynamic optimization of the triggering condition of the voltage regulation strategy is achieved.

The invention relates to the technical field of microchip power compensation, and discloses an efficient power compensation method and system based on a microchip. According to the method, power parameter data of the microchip are collected through monitoring equipment, and the data comprehensively reflect the real-time power condition of the microchip. And then the collected power parameter data and a preset power threshold are compared and analyzed, and a corresponding power compensation control signal is generated according to an analysis result so as to realize accurate power regulation and control. And then the fluctuation characteristic of the power compensation control signal is evaluated to obtain a power compensation lag index and a power compensation efficiency index, and the acquisition frequency of the power parameter data and the execution mode of the power compensation control process are respectively adjusted based on the two indexes, so that the compensation efficiency is improved and the system flexibility is enhanced. And finally, the overall stability of the power compensation control process is monitored, and when the stability does not meet a preset condition, a power compensation invalid mark is generated to guarantee stable operation of the system.

The invention relates to the technical field of construction resource scheduling, in particular to a water conservancy construction equipment scheduling method and system, and the method comprises the following steps: obtaining on-site point cloud and soil data to construct an environmental resistance field; calculating a dynamic work efficiency matrix by combining the equipment power parameters and the resistance field; generating an initial time sequence chain based on the work efficiency matrix, and calculating an overlapping volume of a three-dimensional space envelope body of the equipment; if there is overlap, the job time is adjusted according to the priority to generate a conflict-free scheduling instruction set. According to the method, the rated work efficiency parameters of different machine types in a specific operation area are corrected in real time by constructing the equipment passing resistance model fusing the terrain gradient and the soil moisture content, the problem that static scheduling cannot adapt to environmental changes is solved, and meanwhile space-time conflict detection logic based on the three-dimensional operation envelope surface is introduced; and when it is recognized that the multi-machine moving tracks are overlapped, avoiding or peak shifting instructions with priorities are automatically generated, and conflict-free collaborative operation of the equipment cluster in a complex water conservancy scene is achieved.

The invention discloses an electric energy meter intelligent load control method based on electricity utilization behavior analysis, and relates to the technical field of electric power metering, and the method comprises the steps: collecting current waveform data and power parameters through an electric energy meter metering chip; according to the current waveform data, zero crossing point moment information of the alternating current is determined; generating a load control instruction according to a comparison result of the power parameter and a preset power threshold value; and determining a switch control moment according to the zero-crossing moment information and the action delay parameter of the built-in switch, and controlling the built-in switch to execute on-off operation at the zero-crossing moment according to the load control instruction and the switch control moment. By capturing the current zero crossing point moment, arc-free on-off control of the built-in switch is achieved, energy loss and electromagnetic interference in the switch action process are reduced, and the service life of the switch is prolonged; and meanwhile, a periodic detection mechanism is adopted, power supply is automatically recovered on the premise of ensuring power utilization safety, and the power supply reliability and the user experience are improved.

The application relates to a reactor core power distribution measurement uncertainty analysis method, device, equipment, storage medium and product. The method comprises the following steps: constructing a simulation operation state based on an actual operation state of a reactor core, determining state parameters of the reactor core in the simulation operation state, and obtaining group constants of the reactor core; performing calculation based on a material calculation subprogram and the state parameters to obtain material compositions of each fuel rod in the reactor core; performing calculation based on a power calculation subprogram and the material compositions of each fuel rod to obtain a real power distribution of the reactor core and obtain detector reaction intensities of the reactor core; determining power parameters of the reactor core in the simulation operation state based on the state parameters and the group constants, and performing flux map simulation based on the power parameters and the detector reaction intensities to obtain a simulation power distribution of the reactor core; and determining a measurement uncertainty of the reactor core power distribution based on a difference between the real power distribution and the simulation power distribution. The method can improve the accuracy and acquisition speed of the reactor core power distribution measurement uncertainty.

The invention provides a control method and device for power switching of charging modules, a storage medium and an application power management system, the system comprises a plurality of charging modules and switching modules, every two charging modules of the plurality of charging modules are connected through the switching modules, and the switching modules are connected with the charging modules. The switching module is used for controlling connection and disconnection among the plurality of charging modules, and the method comprises the following steps: obtaining a power demand of a target charging terminal and operation parameters of the plurality of charging modules, determining the number of the charging modules to be input for meeting the power demand according to the power parameters, the method comprises the following steps: firstly, operating a plurality of charging modules, calculating comprehensive health degrees corresponding to the plurality of charging modules based on operating time and operating efficiency, then, determining switching priorities corresponding to the plurality of charging modules, determining the charging modules needing to be switched according to the switching priorities, and finally, controlling a switching module to perform switching control on a target switching charging module. Individual modules in the plurality of charging modules can be prevented from being overused, and the service life of the charging modules is prolonged.

The invention provides an operation state prediction method and system for a distribution network backup power supply. The running state prediction method of the distribution network backup power supply comprises the following steps: acquiring various target power supply parameters in real time, and performing fusion processing on the various target power supply parameters by adopting a Bayesian fusion algorithm to obtain a posterior decision probability; predicting working condition data of the distribution network backup power supply based on the target power supply parameter and the posterior decision probability; and further predicting the future operation state of the distribution network backup power supply according to the working condition data and outputting a prediction result. According to the method, the operation information of the distribution network backup power supply can be comprehensively acquired, association and uncertainty among various parameters are considered, dynamic computing power support can be carried out under different working conditions, and the future operation state of the backup power supply can be evaluated more comprehensively and accurately; besides, dynamic changes of various factors are considered, so that configuration, dynamic management and self-healing processing of the backup power supply are more scientific, and the problem of resource waste or insufficient power supply is avoided.

The invention provides a single-mode semiconductor laser failure assessment method and device and electronic equipment, and relates to the technical field of semiconductor lasers. The method comprises the following steps: acquiring an optical power current characteristic test curve of the failed single-mode semiconductor laser; determining an optical power parameter change trend of the failed single-mode semiconductor laser according to a preset optical power current characteristic standard curve and the optical power current characteristic test curve of the failed single-mode semiconductor laser; if the optical power parameter variation trend indicates that the optical power parameter in the working current range is zero, determining that the failure type is optical cavity surface catastrophe damage; and if the optical power parameter variation trend indicates that the optical power parameter in the working current range is non-linearly decreased, determining that the failure type is optical body material catastrophe damage, so that the failure type of the single-mode semiconductor laser can be judged through the optical power current characteristic test curve. The evaluation cost can be reduced, the evaluation efficiency is improved, and the accuracy of evaluation results is ensured.

The invention relates to the technical field of power distribution, in particular to a flexible dynamic power distribution method and system for a charging pile, and the method comprises the following steps: obtaining a power parameter and an access request, generating mapping by a sorting terminal, matching grade distribution power, constructing a redundant scheduling pool, and updating the sorting to form a distribution map. According to the invention, by introducing residual power screening, access time sorting and power level matching mechanisms and combining hierarchical statistics of terminal power consumption difference values, each terminal obtains a more targeted scheduling priority under different power levels, and accurate distribution of power among the terminals is realized by means of multi-dimensional parameter cross judgment. And a redundancy scheduling pool is constructed through a difference value feedback mechanism, so that the utilization efficiency of power resources is improved, the contradiction between supply and demand in a high-concurrency charging period is effectively relieved, dynamic matching between power grid load balance and terminal power output is promoted, and the overall power supply scheduling performance in a multi-terminal parallel charging scene is improved.

Provided is a downhole device, a well system, and a method. The downhole device, in one aspect, includes an electromagnetic assembly, as well as a magnetic target positioned proximate the electromagnetic assembly, wherein one of the magnetic target or the electromagnetic assembly is coupled with a movable feature of the downhole device, the movable feature configured to move to physically couple or physically decouple the electromagnetic assembly and the magnetic target. The downhole device, according to this aspect, further includes a sensor electrically coupled to the electromagnetic assembly, the sensor configured to sense for a change in a DC power parameter powering the electromagnetic assembly as the electromagnetic assembly and magnetic target physically couple to or physically decouple from one another, the sensed change representative of a change of impedance within a coil of the electromagnetic assembly and employable to estimate the status or health of the downhole device.

The invention relates to an electric meter box temperature rise abnormity detection method and detection system based on multi-terminal aggregation in the technical field of power distribution safety monitoring. The electric meter box temperature rise anomaly detection method comprises the following steps: establishing a single-end baseline model of an ith terminal about temperature-current; acquiring electric power parameters of I electricity meters in the electricity meter box and terminal temperatures Tt, i corresponding to I terminals, and obtaining a steady-state temperature rise baseline temperature at the moment t in the kth detection period based on a single-end baseline model; according to the method, through aggregation analysis and correlation modeling of multi-terminal data in the electric meter box, the local anomaly and the coupling effect between groups can be identified, the accuracy and robustness of temperature rise detection are remarkably improved, meanwhile, a three-layer constraint judgment system is constructed, and the accuracy and robustness of temperature rise detection are improved. Through a hierarchical judgment mechanism of statistical constraint, physical constraint and group constraint, data statistical characteristics and physical correlation characteristics are comprehensively considered, false alarm and missing alarm caused by single-factor fluctuation can be effectively reduced, and the false alarm rate is reduced.

The invention discloses a digital power grid protection efficiency evaluation data automatic acquisition method, system and device and a medium, and relates to the technical field of digital power grids, and the method comprises the specific steps: carrying out the deviation state recognition of a digital power grid, obtaining abnormal data, carrying out the preprocessing of the abnormal data, correcting the electrical operation parameters in the abnormal data, and obtaining the evaluation electrical quantity. Original power parameters in the abnormal data are corrected, evaluation power parameters of the power grid in the effective data range are obtained, corrected operation state data are obtained, and a protection efficiency evaluation data set is generated. According to the method, intelligent recovery of abnormal data and reservation of key interference characteristics are realized, and the problems of information loss and evaluation distortion caused by simple elimination or filling in an existing method are solved. By establishing an offset state classification and risk quantitative evaluation mechanism, a data correction strategy can adapt to different interference modes, and a high-quality protection efficiency evaluation data set is continuously output through a closed-loop processing flow.

The invention relates to the technical field of power distribution, in particular to a cloud side end collaborative management and control system based on the power internet of things. Comprising the following steps: acquiring real-time load fluctuation and new energy power generation uncertainty data from a cloud global data source, generating an initial power parameter combination, and selecting an optimal combination as a global optimization parameter set; adjusting the global optimization parameter set based on local equipment characteristics, and determining a refined power set value; if the deviation exceeds a preset threshold value, simulating a time sequence in a multi-device coordination scene, generating a time sequence coordination scheme, and performing parameter reconfiguration to obtain a coordinated and consistent device response sequence; optimizing unstable points in the response sequence, and determining a stable power distribution path; judging path adaptability, generating a correction instruction and transmitting the correction instruction to the terminal equipment; and the terminal equipment executes synchronous adjustment and tracks the frequency and voltage change of the power grid in real time, and finally stable mode switching is realized. According to the invention, the stability and energy utilization efficiency of the power grid in a complex environment are effectively improved.

The invention relates to a battery charge state evaluation method and device, computer equipment and a storage medium. Real-time parameters and actual charging and discharging parameters of a battery are obtained, the real-time parameters comprise the current charge state and the real-time temperature, and the actual charging and discharging parameters comprise state parameters and power parameters; according to the real-time parameters and the actual charging and discharging parameters, the average temperature of the battery in the process of reaching the target state of charge is determined; obtaining a first mapping relation, wherein the first mapping relation is a three-dimensional mapping curved surface for calibrating the temperature, calibrating the charging and discharging parameters and calibrating the state of charge; determining a target charge state evaluation value according to the average temperature, the actual charge and discharge parameters and a first mapping relation; the target charge state evaluation value comprises a discharge cut-off SOC evaluation value and a full charge cut-off SOC evaluation value, and the problem that the prediction accuracy of the charge and discharge cut-off SOC of the battery is low is effectively solved.

The invention relates to the technical field of magnetic control transformer control, and discloses a magnetic control system based on a multi-core DSP and a control method thereof, and the system comprises a sampling module which is connected with a magnetic control transformer and is used for collecting the electric power parameters of the magnetic control transformer; the main control module is connected with the sampling module and used for receiving the electric power parameters of the magnetic control transformer and generating a control instruction according to the electric power parameters, the main control module is a multi-core DSP processor and comprises a plurality of cores, and each core is used for processing a corresponding task; and the power module is respectively connected with the magnetic control transformer and the main control module and is used for executing corresponding actions according to the control instruction so as to control the magnetic control transformer. Reliability and real-time performance of task processing of the magnetic control system can be improved so that real-time and reliable control of the magnetic control system on the magnetic control transformer can be realized. And through controllable output of the power module, accurate control of the magnetic control transformer is realized.

The invention discloses an off-line high-voltage SVG load testing method and system, and relates to the field of SVG testing, and the method comprises the steps: controlling a high-voltage static var generator to execute pre-charging operation based on the amplitude of the output voltage of a high-voltage direct-hanging energy storage converter, and starting the self-inspection work of the high-voltage static var generator after the pre-charging is completed; setting operation modes of the accompanying test high-voltage direct-hanging energy storage converter and the high-voltage static var generator, and based on the operation modes, sending power parameters by using the test controller to execute load test processing of the high-voltage static var generator; and creating and starting a test sequence by using the test controller, outputting the characteristic quantity of the high-voltage static var generator according to the operation process of the test sequence, executing off-line power grid fault adaptability performance test processing, and outputting a performance test result of the high-voltage static var generator. According to the high-voltage SVG on-load test and function test provided by the invention, a high-voltage power grid is not needed, the detection is convenient, and the influence of the test on the high-voltage power grid is also avoided.

The invention relates to an on-line charging and discharging management method for an intrinsically safe standby power supply, belongs to the technical field of intrinsically safe power supplies, and aims to solve the problems of low charging efficiency and poor system reliability caused by fixed small charging current in the prior art. According to the method, the maximum load current is recorded by monitoring load current and input power supply parameters in real time; gradually increasing the charging current until triggering input power supply protection, determining the maximum charging current and setting a safe operation value; and dynamically adjusting the charging current according to the power supply protection mode and the load current change. According to the method, the charging efficiency is remarkably improved, the power supply continuity and the self-adaptive capability of the system under the fluctuating working condition are enhanced, and continuous and stable operation of mining intrinsic safety equipment in a frequent power failure scene is effectively guaranteed.

The invention provides a communication state test method and device, a storage medium and electronic equipment, and the method comprises the steps: obtaining a communication configuration parameter corresponding to a test instruction in response to the test instruction; establishing a communication connection with a preset ammeter device according to the communication configuration parameter, and reading an electric power parameter of the ammeter device according to a preset time interval to obtain a reading result; and obtaining a communication state test result between the test equipment and the electric meter equipment according to the number of times of reading the electric power parameters by the test equipment and the reading result obtained by each time of reading. By applying the method provided by the embodiment of the invention, the communication state of the electric meter equipment can be effectively evaluated.

Provided is a downhole device, a well system, and a method. The downhole device, in one aspect, includes an electromagnetic assembly, as well as a magnetic target positioned proximate the electromagnetic assembly, wherein one of the magnetic target or the electromagnetic assembly is coupled with a movable feature of the downhole device, the movable feature configured to move to physically couple or physically decouple the electromagnetic assembly and the magnetic target. The downhole device, according to this aspect, further includes a sensor electrically coupled to the electromagnetic assembly, the sensor configured to sense for a change in a DC power parameter powering the electromagnetic assembly as the electromagnetic assembly and magnetic target physically couple to or physically decouple from one another, the sensed change representative of a change of impedance within a coil of the electromagnetic assembly and employable to estimate the status or health of the downhole device.

The application provides a real-time adjustable capacity calculation method for power quality regulation resource combination, and belongs to the field of power regulation, and comprises the following steps: step 1: acquiring and solving m single regulation resources required for real-time power parameter calculation, based on a power decomposition method, each type of compensation capacity of each single regulation resource real-time output is calculated by decomposition; step 2: calculating the real-time compensated output capacity of each single regulation resource and the real-time adjustable capacity of each single regulation resource; step 3: based on the calculation formula of the real-time adjustable capacity of each single regulation resource, the real-time adjustable capacity of the power quality regulation resource combination is integrated. The application helps to realize the combined optimization configuration of a large number of heterogeneous power quality regulation resources in a power grid.

This application provides a method for coordinated power supply control between charging stations and the power grid, comprising: assessing the departure urgency level of each charging connection within the scheduling cycle as high departure risk connection, medium departure risk connection, and low departure risk connection based on the preliminary dwell time prediction results of each charging connection, and determining the risk classification set of each connection; extracting the number of high departure risk connections from the risk classification set, and assessing the departure probability distribution of high departure risk connections in each time period within the scheduling cycle in combination with the rated power parameters of each charging pile; classifying the releaseable power of high departure risk connections and low departure risk connections according to the departure urgency level based on the confidence level threshold and the risk classification set of each connection, and obtaining a subset of adjustable power capacity with graded confidence levels; obtaining the time of new real-time plug-in connection and charging progress from the charging station scheduling records of the power grid dispatch center, and analyzing and updating the dwell time prediction results.

The embodiment of the invention discloses a single-power-supply centralized power supply control method for a tea bar machine, and relates to the technical field of tea bar machines, and the method comprises the steps: determining at least one access load, so as to wake up the access load; monitoring a system power parameter in real time, and performing power supply control on the access load according to the system power parameter and a pre-acquired power supply constraint attribute corresponding to the access load; the power supply constraint attributes comprise a long-time power supply load, a short-time interrupted power supply load and a suspensible power supply load, and the power supply constraint attributes are provided with arbitration priorities; when the multiple access loads are accessed, power supply arbitration is conducted on the power supply constraint attributes according to the arbitration priority, task processing operation is executed on the multiple access loads according to the power supply arbitration result, and the task processing operation comprises continuous power supply, power supply interruption and task suspension. And power supply arbitration is performed on the power supply constraint attribute according to the arbitration priority, so that the operation power of the whole machine is ensured, the power requirement of the actual load is met, and the refinement and safety of the power supply management process are realized.

A memory system includes multiple NAND dies connected via a first bus for power data transmission. A processor sends memory access commands over a second bus and generates a service token to initiate power management configuration in the dies. It creates service data to set power parameters and uses a control protocol to determine bus access. Upon access, the processor transmits the token and data over the first bus, enabling real-time updates to the dies' power settings. This system allows efficient power management, adapting to operational demands and environmental conditions.

A circuit health, efficiency and capacity (CHEC) monitor for use in an electrical power distribution system including a control panel connected to a 3-phase power source and a plurality of loads is provided. The CHEC monitor includes: a power parameters measurement component structured to measure power parameters of a power bus connected to the control panel; a metrics value calculator structured to receive the measured power parameters and determine metric values of a plurality of metrics over first periodic intervals; a metrics average calculator structured to obtain an average for each metric value over a second periodic interval; a metrics normalizer structured to normalize the average for each metric value and obtain a normalized metric index for each metric; a CHEC Index selector structured to select a maximum metric index from the normalized metric indexes; and a CHEC Index indicator structured to provide a latest CHEC Index.

A kind of wind power generation system power accurate detection method based on DC offset estimation compensation, comprising the following steps;Step one, grid voltage, current is carried out ADC sampling, obtains sample value;Step two, four successive sampling points are extracted in turn, and every four sampling points are grouped as a group;Step three, take a group of data, remove DC by difference, calculate the intermediate variable related to frequency, provide input for frequency estimation;Step four, the frequency is iteratively updated using the normalized gradient method, and the estimated value of the intermediate variable of the sample data and the frequency is obtained;Step five, estimate the DC offset, amplitude and phase;Step six, based on the estimated DC offset, amplitude and phase, calculate power, eliminate DC interference;Step seven, steps four to six are executed in a loop until the output is stable.The present application can still achieve high-precision measurement of power parameters under complex working conditions of grid voltage subjected to DC offset interference, and enhance the operation reliability of power system.

This invention relates to the field of power load decomposition technology, and discloses a non-intrusive power load decomposition method and system based on multimodal feature learning. The method involves: synchronously collecting power parameter data from smart meters, environmental parameter data from environmental sensors, and user equipment usage behavior data to obtain multimodal load monitoring data; extracting cross-modal features through the non-negative matrix decomposition layer of a first equipment status recognition model to obtain a multimodal fusion feature vector; identifying load patterns through the first decomposition layer of the first equipment status recognition model to obtain a first decomposed load matrix; performing clustering optimization through the second decomposition layer of the first equipment status recognition model to obtain a second load decomposition matrix; and performing dynamic fuzzy decision-making based on the second load decomposition matrix to obtain the equipment operating status identification result. This invention overcomes the limitations of traditional methods that rely solely on a single power signal, achieving high-precision and highly robust non-intrusive power load decomposition.

A power consumption adjustment method is applied to a power consumption control module in a computing device, and includes: obtaining monitoring results of a power supply system and a component of the computing device, where the monitoring results include a voltage drop parameter of an internal module of the component, a bus voltage drop parameter of a voltage of an input bus in the power supply system, a first bus current parameter of a current of the input bus, and a load power parameter of a core current provided for the component; determining a power control level strategy based on the monitoring results, where the power control level strategy is used to adjust power consumption of the component based on the monitoring results of the power system and the component; and adjusting the power consumption of the component according to the power control level strategy.

The application provides a DFI-based PHY low-power control module, which is connected in parallel between an MC and a PHY, and the circuit comprises a DFI signal analysis unit, a counter, a programmable control unit and an APB interface control unit connected in sequence; the APB interface control unit is connected to an MC register through an APB bus; the DFI signal analysis unit is used for monitoring the read and write data quantity between the MC and the PHY and transmitting the data quantity to the counter, and both the read data and the write data are transmitted to the counter for counting; the counting period of the counter is controlled through the programmable control unit, and the counter transmits the counting value to the programmable control unit; the programmable control unit configures corresponding low-power parameters in the MC according to the transmitted counting value, and the configuration parameters are transmitted to the register of the MC through the APB bus. According to the application, the data transmission quantity in a certain fixed period is used to dynamically adjust the low-power state of the PHY, and the low-power mode of the DDR is realized together with the controller, so that the energy is saved and the efficient data transmission is ensured.