496 results about "Power parameter" patented technology

The invention relates to the technical field of online calibration, in particular to a multi-parameter fusion intelligent electric energy meter online calibration method and system, and the method comprises the following steps: collecting voltage waveforms, current harmonics and active power data, dividing windows, calculating a covariance matrix, and generating a feature set; a power factor curvature extreme value and a temperature inflection point offset are analyzed to generate an interference identifier, current density distribution and a voltage distortion spectrum are jointly analyzed to extract a harmonic energy ratio to generate a feature vector, and phase compensation is performed on a pulse sequence to generate a calibration instruction set. According to the method, the covariance matrix is constructed by synchronously collecting voltage and current power parameters, the abnormal mark section is generated by combining the temperature change and the covariance difference value, the environment disturbance and the real deviation are effectively distinguished, and the temperature hysteresis effect is identified through the power factor curvature extreme value and the temperature inflection point offset. And combining current density and voltage distortion spectrum analysis to extract a fundamental wave and harmonic wave energy ratio, establishing a composite calibration reference, and dynamically adjusting a pulse duty ratio to realize harmonic wave energy compensation.

The invention provides a self-adaptive low-voltage ride-through control method for a network-building type converter considering virtual impedance, and the method comprises the steps: defining a reactive power adjustment coefficient and an active power adjustment coefficient, obtaining a power parameter, building an active-reactive power self-adaptive low-voltage ride-through control strategy formula when the influence of the virtual impedance is not considered, and carrying out the self-adaptive low-voltage ride-through control of the network-building type converter. The relation between the virtual impedance and the output reactive power is analyzed through the reactive power of the network-forming converter control system after the virtual impedance link is switched in, so that the enlightenment that the virtual impedance needs to be introduced to carry out linear correction on the reactive power regulation coefficient is obtained; a corrected value function can be obtained after linear correction is carried out on reactive adjustment parameters through virtual impedance, the corrected value function is finally substituted into a strategy formula, an active-reactive self-adaptive low-voltage ride-through control strategy formula considering the influence of the virtual impedance is obtained, the transient power angle stability of a grid-forming type converter system can be enhanced, and the stability of the grid-forming type converter system is improved. And meanwhile, the problem of over-current of the converter under large disturbance is solved.

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 the technical field of downhole operation control, in particular to a downhole operation platform control system and a crane, and the system comprises a task identification module, a demand index module, a power sequencing module, a rhythm switching module and a command reconstruction module. According to the method, through accurate recognition of the structure state and parameter linkage, accurate judgment of the initial operation stage is achieved, false starting and false action of the platform are avoided, coupling analysis between operation data can dynamically set the scheduling priority, it is guaranteed that key tasks are executed in advance, coordination is improved, energy supply conditions are judged through power parameter fusion, and paths are distributed according to needs; the energy utilization efficiency is enhanced, stage rhythm conversion achieves stable switching based on action states and logic mapping, action disjunction is prevented, finally, control instructions are rearranged through feedback time delay and an execution sequence, an efficient and ordered response mechanism is formed, the overall operation efficiency, stability and the intelligent level are improved, and the risk of manual intervention and operation imbalance is reduced.

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 an energy storage monitoring method and system, electronic equipment and a storage medium, and relates to the technical field of energy storage. The method comprises the following steps: acquiring voltage data and temperature data of a plurality of different types of battery units; generating a voltage response curve of the corresponding battery unit based on each voltage data, and generating a temperature response curve of the corresponding battery unit based on each temperature data; dividing each battery unit into a plurality of battery packs with different charging and discharging characteristics according to each voltage response curve and each temperature response curve, and calculating the residual electric quantity value of each battery unit in each battery pack; in each battery pack, determining an electric quantity difference value between the battery units in combination with the residual electric quantity value of each battery unit, and taking each battery unit of which the electric quantity difference value is greater than an electric quantity threshold value as a target battery pair; and performing concurrent equalization adjustment on the power parameters of each target battery pair until the electric quantity difference value of each target battery pair is smaller than the electric quantity threshold value. By implementing the technical scheme provided by the invention, the overall energy storage efficiency can be improved.

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 field of automation, and particularly provides a crane boom anti-collision method and system based on dynamic detection, and the method comprises the following steps: obtaining power parameters, motion data and structural data of a main engine boom and an auxiliary engine boom; determining the current position information of a main engine boom, and determining the current position information of an auxiliary engine boom; acquiring predicted deceleration position information and predicted stop position information of the main engine arm support based on the motion data, the power parameters and the structural data of the main engine arm support; based on the current position information of the main machine arm frame, the current position information of the auxiliary machine arm frame and the predicted deceleration position information and the predicted stop position information of the main machine arm frame, judging a collision risk assessment result of the main machine arm frame and the auxiliary machine arm frame; and when the collision risk assessment result is early warning, the main engine boom is decelerated, or when the collision risk assessment result is dangerous, the main engine boom is stopped. According to the anti-collision method, collision of the crane boom can be avoided.

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 a dynamic power distribution method and device for a direct-current micro-grid hybrid energy storage system, and relates to the technical field of electric energy storage management, and the method comprises the steps: collecting the power parameters, load demand fluctuation data and renewable energy power generation output data of each energy storage unit in the hybrid energy storage system in real time, calculating a multi-dimensional power entropy index, and calculating the power entropy index of the hybrid energy storage system; based on the indexes, power distribution weight coefficients are dynamically generated, power dynamic distribution is carried out, a charging and discharging strategy is generated, charging and discharging control of the hybrid energy storage system is executed, and power distribution is dynamically adjusted in combination with a real-time feedback mechanism. The technical problems that an existing energy storage system power distribution method lacks flexibility and cannot effectively cope with load fluctuation and unstable renewable energy sources, so that the system operation efficiency and stability are poor are solved, the charging and discharging strategy of the energy storage unit is dynamically adjusted through the multi-dimensional power entropy index and the real-time feedback mechanism, and the energy storage efficiency is improved. The technical effect of efficient and stable operation of the energy storage system is achieved.

Methods, systems, and devices for wireless communications at a user equipment (UE) are described. The UE may receive a first control message indicating a plurality of code points and a plurality of transmission configuration indication states. The UE may receive a second control message including a grant scheduling transmission of an uplink communication to a first transmission and reception point and an indication of a code point from the plurality of code points, the code point indicating a first transmission configuration indication state of the plurality of transmission configuration indication states for communication with the first transmission and reception point. The UE may transmit the uplink communication to the first transmission and reception point using the first transmission configuration indication state in accordance with a first set of power control parameters and the first set of power control parameters may be linked to the first transmission and reception point.

The invention relates to the technical field of electric power simulation, and discloses an electric power system data parallel simulation processing method based on distributed modeling. The method comprises the following steps: acquiring voltage, frequency and power parameters of a new energy inverter and an energy storage converter, and generating a state switching feature vector through a fuzzy C-means algorithm; determining and calculating a load abrupt change subsystem according to the load index overrun, and calculating the electrical coupling strength with an adjacent subsystem; allocating reserved computing resources for the mutation subsystem through a particle swarm optimization algorithm to form a dynamic resource allocation table; and adjusting the data synchronization period of the mutation subsystem to an extended time window, and continuing parallel simulation after the adjacent subsystems wait for boundary data. According to the method, the problems that in an existing power system data parallel simulation processing method based on distributed modeling, the calculation load abrupt change and the data synchronization failure caused by strong nonlinear component state switching cannot be processed are solved.

The invention discloses an intelligent defect detection method based on a power system, and belongs to the technical field of power system detection and fault diagnosis, and the method comprises the steps: obtaining voltage waveform data and current waveform data collected by a power parameter sensor, and temperature data, humidity data and vibration data collected by an environment sensor, and generating a multi-modal data set; performing time domain feature extraction and frequency domain feature extraction on the multi-modal data set to generate a power equipment feature vector and an environment interference feature vector; performing matching analysis on the electrical equipment feature vector according to a preset defect feature baseline library to generate a preliminary defect judgment result; and compensating and correcting the initial defect judgment result based on the environment interference feature vector to generate a final defect detection report. According to the method, a collaborative technology of multi-modal data fusion acquisition, dynamic threshold matching and environment compensation correction is adopted, and accurate defect identification and adaptive optimization detection under complex working conditions can be realized.

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 invention discloses a power grid power compensation method, which is applied to a controller, and the controller is connected with a power compensation system. The power compensation system comprises a traction transformer and a converter. The converter is connected with the traction transformer through a first power supply arm and a second power supply arm of the traction transformer; the method comprises the following steps: acquiring a first power parameter of a first power supply arm, and acquiring a second power parameter of a second power supply arm; determining a power compensation parameter for performing power compensation on the first power supply arm and the second power supply arm under the condition of determining that a power adjustment condition is met based on the first electric power parameter and the second electric power parameter; the first power supply arm and the second power supply arm are subjected to power compensation based on the power compensation parameter and the converter, namely, the power difference between the two power supply arms (the first power supply arm and the second power supply arm) is adjusted through the calculated power compensation constant and the converter, so that the influence of unbalanced negative sequence voltage is reduced, and the power supply stability is 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.

A dual power switching system selects a first power source or a second power source to supply power to a load coupled to an inductive device. The dual power switching system includes a first thyristor, a second thyristor, a third thyristor, a fourth thyristor, and a controller. The controller calculates a total magnetic flux according to a current magnetic flux of the inductive device and an expected magnetic flux of the second power source. When the power-supplying source is switched, the controller turns off the first thyristor and the second thyristor, and determines whether a commutable time is reached according to a power parameter of the first static transfer switch and the second static transfer switch. When the commutable time is reached, the controller correspondingly turns on at least one of the third thyristor and the fourth thyristor according to the total magnetic flux being less than a threshold.

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 discloses a fault ride-through method, device, equipment and system based on virtual impedance. The method comprises the following steps: in response to a fault ride-through instruction, obtaining real-time voltage and real-time current of a power grid transmission line, virtual internal potential of a first control loop and a fault current amplitude limiting value of an inverter; determining a first reactive power parameter value and a first active power parameter value based on the real-time voltage and the fault current amplitude limiting value; determining a current reference value based on a preset control target coefficient, the first reactive power parameter value, the first active power parameter value and the real-time current; determining positive sequence virtual impedance and negative sequence virtual impedance according to the current reference value and the virtual internal potential; and on the basis of the positive sequence virtual impedance and the negative sequence virtual impedance, the control parameter output by the second control loop is adjusted, according to the embodiment of the invention, the fault ride-through of the grid-forming inverter can be ensured while the current amplitude during the fault ride-through period is not out of limit, and the power supply reliability is improved.

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 discloses a fault diagnosis system and method for a regulating valve, and the system comprises a power detection module which is used for obtaining a power parameter of a driving execution mechanism; the valve position feedback module is used for acquiring execution parameters of the execution structure for driving the regulating valve; the instruction acquisition module is used for acquiring a control instruction of a control end and diagnosing a test instruction; the diagnosis test instruction is used for the valve positioner to execute setting operation; the setting module is used for acquiring a diagnosis test instruction and executing setting operation, and acquiring behavior parameters in the setting operation process to generate fault mapping for diagnosis; and the analysis module is used for acquiring response parameters generated by responding to the control instruction during actual operation, and obtaining fault information based on fault mapping comparative analysis.

The invention provides an electricity larceny behavior monitoring and evidence obtaining system based on an intelligent fusion terminal, and relates to the technical field of power distribution networks, and the system comprises an electricity utilization information collection master station system, the intelligent fusion terminal, an electricity larceny prevention online monitoring device, and a loop state monitoring unit. The loop state monitoring unit is used for monitoring the state of the metering loop to obtain real-time monitoring electric energy parameters of the metering loop; the intelligent fusion terminal performs analysis according to the real-time monitored electric energy parameters to obtain a current abnormal data record; the electricity consumption information acquisition master station system performs electricity stealing suspicion judgment according to the current abnormal data record and the remote meter reading data of the intelligent fusion terminal; and the power utilization information acquisition master station system is in communication connection with the electricity larceny prevention online monitoring device so as to control the electricity larceny prevention online monitoring device to perform image acquisition when it is judged that the intelligent fusion terminal has an electricity larceny suspicion currently, and a first monitoring image of a scene where the intelligent fusion terminal is located is obtained so as to perform electricity larceny behavior evidence obtaining.

The invention relates to the technical field of server assembly management, and discloses a rack-mounted server assembly management system and method and electronic equipment, and the system comprises a position recognition module, a power demand recognition module, a power matching judgment module, a thermal stability judgment module, a power supply path control module and a power supply on-off control module. The method comprises the following steps: acquiring a target power demand value of the server; the three-dimensional space position of the server in the rack is obtained, and a power supply capacity value corresponding to the three-dimensional space position is constructed; judging the difference value between the power supply capacity value and the target power demand value, and obtaining the environment temperature and the thermal resistance value of the slot to judge the thermal stability; selecting a path with the minimum energy consumption, and generating a path control instruction; executing the path control instruction, and controlling the target slot to be powered on. According to the invention, the technical scheme of identity recognition and power demand dynamic matching is adopted, the identity information of the server is automatically recognized, and the corresponding target power demand value is obtained, so that the technical effect of accurately configuring the power parameters of the server is achieved.

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 provides a wind turbine generator control parameter identification method and system based on subsynchronous oscillation characteristics, and the method comprises the steps: carrying out the phase margin sensitivity analysis based on the main oscillation mode of a wind turbine generator grid-connected system, and determining a to-be-identified control parameter; constructing a simulation model of the wind turbine generator, determining an initial value of a to-be-identified control parameter, and determining a to-be-identified control parameter-active output parameter group; performing analog simulation on the simulation model of the wind turbine generator, and determining oscillation characteristics; performing model training on a preset neural network model according to the to-be-identified control parameter-active output parameter group and the oscillation characteristics, and determining the neural network model after model training is completed; and inputting the actual oscillation characteristics and the actual active power output into the neural network model which completes model training, and determining an actual to-be-identified control parameter identification result. According to the method and the device, the key control parameter identification of the wind turbine generator is realized by adopting the finite oscillation data, the calculation amount is small, and the identification efficiency is high.

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.