344 results about "Power rating" patented technology

The invention discloses a load decomposition method based on fusion feature data enhancement, and the method comprises the steps: synchronously collecting the low-frequency power data of a bus end of an electrical loop of a building and the low-frequency power data of all electric equipment ends, and generating a confusion power sequence of similar equipment through Beta distribution mixing, so as to enhance the recognition capability of a model for power overlapping features; based on the power time sequence data, extracting a mutation feature, an equipment state feature and a time coding feature to construct a multi-dimensional feature vector; a CNN-BiLSTM double-branch neural network is adopted, spatial-temporal characteristics are fused through a dynamic weight attention mechanism, and equipment state classification and power decomposition tasks are jointly optimized. In practical application, bus end power data is input, and the operation state and power distribution of each electric device are obtained. According to the method, an adversarial training strategy and a gating feature fusion mechanism are innovatively introduced, the load decomposition performance in a complex power utilization scene is remarkably improved, and the method is particularly suitable for identification and power prediction of equipment with similar rated power.

The invention discloses a method and a device for detecting networking and grid-connected capabilities of a networking type energy storage system, and belongs to the field of power system detection. The method comprises the following steps: disconnecting the energy storage system from an external power grid, testing whether the energy storage system is independently started or not, and establishing a stable voltage; a dynamic power compensation algorithm is adopted to ensure that the voltage and the frequency are kept stable under load fluctuation, and a time domain response analysis method is adopted to ensure that the recovery time is less than or equal to 200ms; the grid-connected power is gradually increased or reduced, and the adjustment and response capability of the system within the rated power range of 0-100% is tested; applying voltage disturbances with different amplitudes, observing the dynamic response of the tested energy storage system, and testing whether the system can operate stably and keep active power output; a main power grid is simulated to be disconnected, whether an energy storage system recognizes and enters an island mode is detected, and the island detection speed is increased by using an improved positive and negative sequence impedance measurement method. A positive and negative sequence impedance measurement algorithm is adopted, the disconnection state of the main power grid is detected more quickly, island detection time is remarkably shortened, and fluctuation of voltage and frequency is reduced.

The invention discloses a synchronous generator excitation method based on mathematical modeling and gain scheduling, and relates to the technical field of synchronous generator control, and the method comprises the steps: building a synchronous generator global dynamic mathematical model comprising the electromagnetic dynamic characteristics of a stator winding, a rotor winding and a damping winding through a modeling module; a discretization simulation platform is constructed in a Matlab / Simulink environment by utilizing a simulation module, model parameters are corrected, dynamic adjustment is realized through a gain scheduling excitation controller, an automatic voltage regulator (AVR) adopts PID (Proportion Integration Differentiation) control and comprises a voltage deviation integral separation strategy, and a power system stabilizer (PSS) dynamically adjusts parameters of a lead-lag compensator based on active power. According to the method, the deviation between a model and an actual system can be reduced by more than 30%, the electromechanical oscillation damping ratio within the rated power range of 10%-150% is increased by 25%-40%, the harmonic content of exciting current is reduced to be lower than 5%, the stability of an electric power system and the electric energy quality are remarkably improved, the engineering practicability is high, and the method is easy to transform and upgrade on an existing synchronous generator.

The invention discloses a dynamic load balancing method and device for an intelligent charging pile management system, and the method comprises the steps: obtaining the operation parameters of a target area transformer corresponding to the intelligent charging pile management system in a current control period, so as to obtain the real-time total load of the target area transformer in the current control period; dynamically calculating the real-time available capacity of the transformer based on the rated power and the real-time total load of the transformer in the target station area; calculating the predicted available capacity of the transformer in the next control period through a load prediction model based on the historical power data and the external environment variables; and according to the real-time available capacity and the predicted available capacity, dynamically adjusting the operation power of the plurality of accessed charging piles, and expanding the number of the accessible charging piles in a load trough period. By fusing the real-time power grid state and the multivariable predicted future load demand, the dynamic fine adjustment of the power of the charging pile and the prospective expansion of the off-peak access amount are realized, the safety of the power grid is ensured, and the capacity utilization efficiency of the transformer is remarkably improved.

A system and method for operating a fleet of pumps for a turbine driven fracturing pump system used in hydraulic fracturing is disclosed. A method of operating a fleet of pumps associated with a hydraulic fracturing system includes receiving a demand Hydraulic Horse Power (HHP) signal. The demand HHP signal may include the Horse Power (HP) required for the hydraulic fracturing system to operate and may include consideration for frictional and other losses. The method further includes operating all available pump units at a percentage of rating below Maximum Continuous Power (MCP) level, based on the demand HHP signal. Furthermore, the method may include receiving a signal for loss of power from one or more pump units. The method further includes operating one or more units at MCP level and operating one or more units at Maximum Intermittent Power (MIP) level to meet the demand HHP signal.

The invention relates to the technical field of hydroelectric generation, and discloses a power distribution method, device and equipment of a hydroelectric generating set, a medium and a product, the power distribution method of the hydroelectric generating set comprises the following steps: determining a plurality of preliminary power distribution schemes according to the power grid demand power and the rated power of the hydroelectric generating set; determining a target damage index and a target efficiency index corresponding to each preliminary power distribution scheme according to the working condition data of the plurality of hydroelectric generating sets in each preliminary power distribution scheme; fusing the target damage index and the target efficiency index to obtain a health degree corresponding to each preliminary power distribution scheme; according to the health degree, a target power distribution scheme is selected from the multiple preliminary power distribution schemes, and power is distributed according to the target power distribution scheme, the health degree is obtained by fusing the target damage index and the target efficiency index, the target power distribution scheme is selected according to the health degree, and the accuracy of the target power distribution scheme is improved.

The invention discloses a load matching method of a tested power supply and related equipment. The method comprises the following steps: acquiring rated voltage, rated current and rated power of a tested power supply, drawing a power supply parameter curve based on the group of parameters, and determining a current turning point from the power supply parameter curve; according to the magnitude relationship between the actual output voltage of the tested power supply and the voltage corresponding to the current turning point, the rated current or rated power is flexibly selected as a reference basis to determine the resistance value of each load in the load box; and finally, selecting a plurality of loads connected in parallel from the load box as test loads according to the actual output voltage, and ensuring that the actual output current of the tested power supply reaches the rated current or the actual output power reaches the rated power. The rated current or the rated power is dynamically switched through the current turning point to serve as a reference basis, the load requirements of the tested power supply in different voltage intervals are accurately adapted, and the adaptability of load matching is greatly improved.

The embodiment of the invention discloses a pressure control method and system for a once-through steam generator of a nuclear reactor, and relates to the technical field of nuclear power. Determining power deviation according to the operation power and the secondary circuit load; according to the power deviation, the rated power corresponding to the nuclear reactor and the rated feed water flow corresponding to the once-through steam generator in the nuclear reactor, pressure regulation information is determined; and adjusting the pressure of the once-through steam generator according to the pressure adjusting information. According to the embodiment of the invention, a PID controller is not needed in the process of determining the pressure regulation information, but the pressure regulation information determined based on the power deviation directly acts on the feed water flow regulation valve, so that rapid and accurate OTSG pressure control can be realized.

The invention provides a module power redundancy dynamic switching control system, and relates to the technical field of power system redundancy control, and the system comprises a plurality of power modules which are connected with a plurality of loads through a switch module; the switching controller is used for calculating the power redundancy in real time according to the total load power of each load and the rated power and the peak efficiency of each currently-input power module, so as to control the action of the switch module; and the number of the currently input power modules is adjusted, so that the power redundancy is greater than zero and is not greater than the minimum value of the rated power of each currently input power module. The method has the advantages that the number of redundant modules can be automatically adjusted according to the load rate, the problem that faults of a traditional non-redundancy scheme are prone to diffusion is solved, the defect that redundancy of a fixed redundancy scheme is insufficient or excessive is avoided, and the average load rate of the modules is optimized to the efficient interval of 60%-80% while reliability is guaranteed.

The invention discloses a hybrid power parameter determination method and device and electronic equipment, and relates to the field of vehicle design, and the method comprises the steps: determining the engine displacement of which the average operation power of an engine is consistent with a target fuel consumption area according to the average operation power, the torque standard deviation, the maximum torque fluctuation value and the fuel type in a vehicle road spectrum; according to the method, the determined engine can work in the interval with higher efficiency, the fuel economy is improved while the conventional power requirement is met, and the engine cost is reduced. The rated power of the motor is further determined according to the maximum operation power in the vehicle road spectrum and the target engine external power, and the target engine external power is the external power corresponding to the target vehicle speed or the target rotating speed under the maximum operation power. And determining the battery capacity according to the rated power of the motor, the climbing duration in the vehicle road spectrum and the battery adjustment coefficient. And on the basis of the engine, motor driving is matched to increase the endurance mileage, and the economy of the whole vehicle is improved.

The invention relates to the technical field of network management, in particular to a switch voltage intelligent monitoring and abnormity regulation and control method and system, and the method comprises the following steps: reading port current and power supply voltage register conversion power consumption, writing the port current and power supply voltage register conversion power consumption into a port meter, comparing the port meter with rated power, and reading input / output and mainboard interface voltage according to an identifier; and positioning continuous periodic voltage change drop nodes, and determining a propagation node sequence by combining sampling time. According to the invention, by reading data conversion of a port current register and a port power supply voltage register and according to a power consumption accumulation result, power supply state judgment is associated with port load change, node voltage change is compared and identified by combining a continuous sampling period, and a voltage drop node is identified by combining a working voltage reference value. And a voltage propagation node sequence is obtained according to the sampling time, and the initial position of the power supply path is identified and is combined with the input voltage of the redundant power supply for register state writing, so that a voltage change source has a path association judgment basis.

The invention provides a coal mine security power supply underground load switching method and system, and relates to the technical field of power supply. The underground load switching method for the coal mine security power supply comprises the following steps: after a ground state monitoring unit determines that a ground substation is in a whole-substation power loss state, an intelligent control unit starts the security power supply; the power supply state monitoring unit monitors the operation state of the security power supply and evaluates to obtain the first real-time maximum output power of the security power supply; the intelligent control unit calculates first system available power according to the first real-time maximum output power and a preset safety coefficient; determining a target load based on the first system available power, the rated power corresponding to each underground load and a preset underground load priority; wherein the sum of the rated power of all the target loads is smaller than the first system available power, and the priority is used for indicating the importance sequence of the underground loads; and the load controller controls the switching system to supply power to the target load.

The invention discloses a design method of a lightweight offshore booster station diesel generator system, and belongs to the technical field of offshore booster station design. Comprising the steps of determining an island operation mode of the offshore booster station; under the island operation mode of the offshore booster station, calculating the calculated load of a diesel generator in a diesel generator system, the rated capacity of an oil storage tank, the size of a diesel engine room and the size between diesel tanks; calculating the rated power of the diesel generator; determining an arrangement mode between the diesel engine room and the diesel tank; according to the rated capacity of the oil storage tank, the rated power of the diesel generator and the arrangement mode between the diesel engine room and the diesel tank, the design result of the lightweight offshore booster station diesel generator system is obtained. The island operation mode can be determined, the rated power of the diesel generator can be accurately calculated, the capacity of the oil storage tank can be accurately calculated, the size between the diesel engine room and the diesel tank and the equipment arrangement scheme are optimized, and the reliability, economy and space utilization rate of the system are improved.

The invention discloses a method for determining a self-consuming power curve of a wind turbine generator, which comprises the following steps of: performing conversion according to an actually-measured wind speed and an actually-measured air density to obtain an equivalent wind speed under a standard air density, and segmenting the equivalent wind speed into various wind speed sections according to a standard power curve; self-consuming equipment is divided into constant-power equipment and variable-load equipment; working condition coefficients of all the constant-power devices and all the variable-load devices in the corresponding wind speed sections are determined; according to the rated power of each constant power device and each variable load device and the working condition coefficient of the corresponding wind speed section, respectively determining the self-consuming power of each wind speed section of each constant power device and each variable load device; summing the self-consumed power of the same wind speed section of all the constant power equipment and the self-consumed power of the same wind speed section of all the variable load equipment to obtain the self-consumed power of the whole machine in each wind speed section, and generating a wind speed section-self-consumed power curve. The actual operation condition is dynamically captured, and the accuracy and efficiency of generating capacity evaluation are improved.

The present application belongs to the technical field of intelligent household appliances, and particularly relates to a method and device for obtaining the power consumption of a water heater and an electronic device. By obtaining a plurality of reported data sets of the water heater in a target period, for each reported data in each reported data set, according to a preset rated power field and a plurality of real-time power fields, the real-time power value corresponding to the real-time power field in which the power value is written and the rated power value corresponding to the rated power field are extracted, and the power value corresponding to each reported data is determined; the time interval between each reported data and the previous reported data of the reported data is obtained, and then the power consumption of the time interval is obtained according to the obtained power value, and finally the power consumption of the target period is obtained by summation. In the above method, the preset rated power field and the plurality of real-time power fields are used, and the real-time power field with the power value is found in the real-time power field, thereby avoiding the problem of value error when obtaining the power value, and further causing the problem of power consumption calculation error.

The present invention relates to the technical field of three-phase electric energy meters, and specifically to a three-phase electric energy meter system that can be remotely upgraded using multiple communication modes. The system comprises a background parallel management unit, an electric energy information collection unit, a background remote upgrade unit, an electric energy data processing unit, a data training unit, a data self-test unit, and a load prediction unit. When a cloud upgrade instruction is generated in the background parallel management unit, the cloud upgrade information instruction is transmitted to the electric energy information collection unit. After receiving the upgrade instruction, the electric energy information collection unit collects upgrade status information and historical data packets of each electric energy meter. The electric energy data processing unit cleans the historical data packets, specifically using the average value of the ratio of the power range value to the rated power value and the connection deviation rate ratio as the prediction weighted item for a model construction, so as to meet the regulation and prediction requirements of multiple risks in a future environment and improve the service life of the electric energy meter at that location.

The application relates to a charger and a power distribution method and a power distribution device thereof, the method comprising the following steps: determining the required power and the required current of a vehicle to be charged; determining the rated power and the maximum current of each charging module in the charger; calculating the number of required charging modules based on the required power and the rated power, or the required current and the maximum current; selecting the required charging modules in the charger based on a preset selection principle, combining the selected charging modules, and obtaining combined charging modules; and calling the combined charging modules to charge the vehicle to be charged. The application determines the number of required charging modules in advance, and then selects the required charging modules in the charger based on the preset selection principle, so that the problem of charging power redundancy caused by unreasonable charging power distribution is reduced.

A method for optimizing the performance of an electric drive (12) in a vehicle (10), wherein the electric drive (12) has a nominal power output, includes a limitation test step (2) in which it is checked whether at least one limitation reason exists which precludes a temporary increase in the power output of the electric drive (12) beyond the nominal power output.

This application discloses a method, a power cabinet, and a power distribution control system for controlling power distribution from a power module to a charging terminal. A power distribution method includes: a power control unit determining a power distribution mode for one or more charging terminals, including: obtaining the number of available modules in the power module; calculating the required number of modules based on the power demand from one or more charging terminals and the rated power of a single power module; comparing the required number of modules with the number of available modules; determining an efficiency-priority mode or a power-priority mode as the power distribution mode based on the comparison result; the power control unit selecting a target power module and determining a target power path based on the power distribution mode; and the power control unit sending an instruction to a power distribution unit, causing the power distribution unit to invoke the target power module to distribute power to the charging terminal by controlling the operation of a switch associated with the target power module and the target power path.

A method for operating an aircraft includes determining (902A, 902B, 904, 905) a shaft horse power requirement of a multi-engine power plant, comparing (906) the shaft horse power requirement to a threshold value, and activating (908) an economy mode of operation or inhibiting (910) the economy mode of operation based upon the results of the comparison step (906). The threshold value may be determined from a power rating for an engine of the multi-engine power plant, and may be adjusted and / or delayed, depending upon whether the current state is economy mode active or economy inhibited. The shaft horse power requirement can be calculated from a control input, such as collective position, from a collection of flight parameters, including airspeed, aircraft gross weight, altitude, and the like, or from a measurement of actual shaft horse power production by the engines

The application provides a DC power distribution network source-load-storage self-adaptive power distribution method based on flexible droop control, aiming at coordinating the logical relationship between the maximum power constraint of new energy, the residual capacity constraint of energy storage equipment and the controllable range constraint of load and the voltage-power droop control in the DC power distribution network, meanwhile, the application determines a droop coefficient setting method in the form of power standard, provides a unified droop coefficient setting rule for equipment of different categories, capacities and rated powers, and ensures that each equipment can determine the quota participating in the self-adaptive power distribution according to the current working condition under the droop coefficient setting scheme, compared with the existing scheme, the self-adaptability of the power distribution among the source, the load and the storage in the DC power distribution system is improved.

A method for evaluating at least one injector of an internal combustion engine includes the steps of: evaluating a plurality of the at least one injector of the internal combustion engine based on a power rating which is associated with an electric device that is operatively connected with the internal combustion engine.

Discussed is a power control apparatus and a power control method. The power control apparatus may monitor an output power of a power conversion system (PCS), detect changes in a voltage of a DC link, and control output power of a battery by comparing the output power of the PCS with a rated power of the battery, and thus, provides stabilization of an energy storage system by preventing voltage fluctuations in the DC link.

The embodiment of the invention provides a frequency converter type selection method and device and a motor no-load test method. The model selection method comprises the steps that the selectable range of the rated current of a to-be-selected frequency converter is determined according to the rated voltage and the rated frequency of a motor and the rated voltage and the rated frequency of the to-be-selected frequency converter, and the rated voltage of the motor is larger than the rated voltage of the to-be-selected frequency converter; according to the selectable range of the rated current of the to-be-selected frequency converter and / or the estimated value of the maximum output power of the motor in the operation process of the variable frequency driving motor of the to-be-selected frequency converter from the rated frequency of the to-be-selected frequency converter to the maximum frequency of the motor, determining the selectable range of the rated power of the to-be-selected frequency converter; and on the basis of the optional range of the rated current and the optional range of the rated power of the to-be-selected frequency converters, selecting one to-be-selected frequency converter meeting the verification condition that the allowable minimum leakage reactance of the motor is not greater than the leakage reactance of the motor when the motor is controlled to operate by the to-be-selected frequency converter from the to-be-selected frequency converter pool as the selected frequency converter.

The utility model provides a load simulation circuit and a rack-mounted load box, and belongs to the field of load boxes, the load simulation circuit comprises a rectification circuit, a diverter, a power module, a fan module and a control and drive circuit, the power module comprises at least one heating tube and at least one transistor, the control and drive circuit comprises a main control circuit, a voltage signal processing circuit, a current signal processing circuit, a power setting and display module and at least one IGBT drive circuit, the base electrode of the transistor is connected to the main control circuit through the IGBT drive circuit, and the power setting and display module is connected to the main control circuit; the transistor is connected to the main control circuit through the IGBT driving circuit, the duty ratio adjusting range of the transistor is from 0 to 1, with the rated power of the heating tubes being 2kW as an example, the output power adjusting range of the heating tubes is from 0 to 2kW, and when the three heating tubes are connected in parallel and the rated power of each heating tube is 2kW, the power of the load simulation circuit can be adjusted within the range of 0-6kW. The problem that an existing load box is large in power span is solved, and high-precision power adjustment of the load box is achieved.

The utility model discloses a ground fault active full-compensation device using an energy storage unit, which comprises a controller, an active power compensator, a boosting transformer, a full-compensation switching high-voltage switch and an energy storage unit for providing electric energy for the active power compensator and absorbing excess energy when the active power compensator is switched on and off a grid, the AC input end of the energy storage unit is connected with an AC power supply, and the positive and negative ends of the energy storage unit are respectively connected with the DC side bus positive and negative electrodes of the active power compensator. According to the utility model, the energy storage unit is arranged in the system to provide a working power supply for the active power compensator, so that the battery of the energy storage unit can be charged with lower power, and the active current, the reactive current and the harmonic current of a system fault point can be compensated with higher current, thereby reducing the power supply capacity required by the rated power work of the active power compensator; the addition of other equipment is avoided, the equipment investment is reduced, and the occupied area is saved.

The invention provides an equipment control device and method and electronic equipment, relates to the field of computers, and can quickly respond to and control frequency reduction of a processor when the processor in first equipment quickly releases sudden power consumption, thereby reducing the risk of overload of a system power supply or power failure of the first equipment and improving the power supply safety of the system power supply. The device comprises a first hardware module and a second hardware module. The first hardware module is respectively connected with a power supply link of the first equipment and a processor of the first equipment, and the second hardware module is respectively connected with the power supply link and the processor. The first hardware module is used for acquiring the voltage of the power supply link in real time and triggering the processor to reduce frequency through hardware interruption when the voltage is within a first range. An upper bound of the first range is less than a nominal voltage of the first device. And the second hardware module is used for acquiring the current of the power supply link in real time and triggering the processor to reduce frequency through hardware interruption when the current is within a second range. The lower bound of the second range is greater than the ratio of the rated power to the nominal voltage of the first device.

This invention provides a power supply method, apparatus, device, and medium. The method includes: acquiring vehicle status data of a new energy vehicle; determining the operating status of the new energy vehicle based on the vehicle status data; determining the power consumption information of the new energy vehicle when it is in operation; and determining a target DC-DC converter from at least three DC-DC converters of different power ratings based on the power consumption information, and using the target DC-DC converter to supply power to the new energy vehicle. This invention solves the problem of increasingly high low-voltage power consumption in vehicles, ensures stable operation and efficient energy management of vehicles under various operating conditions, guarantees power supply safety, and improves the functional safety level of vehicles.

The application discloses a kind of multi direct current charging pile adaptive on-line method, belong to direct current charging pile technical field, comprising: the charging pile needing on-line is connected, and on-line mode is set;The charging pile of on-line respectively carries out self-checking;If charging pile self-checking is normal, then execute joint self-checking;When the charging pile passing joint self-checking fails, execute fault strategy;When on-line power exceeds charging gun gun line rated power, limit the maximum output power of charging gun;The multi direct current charging pile adaptive on-line method, when current single machine output power cannot satisfy the demand of car end, broadcast to find whether there is idle power module for use in on-line pile;After on-line parameter setting is completed, self-broadcast constructs on-line topology, improves single machine output power, on the basis of guaranteeing charging safety and reliability, idle power module of on-line charging pile is reasonably called, effectively improves charging efficiency.

The application provides a power module and an electronic device, which can be applied to the technical field of hardware. The power module comprises: a plurality of power modules; an input module connected with the plurality of power modules, the input module being used for receiving a first voltage and a second voltage, providing the first voltage as an input voltage of the plurality of power modules to the plurality of power modules respectively, and providing the second voltage as the input voltage of the plurality of power modules to the plurality of power modules respectively in response to a failure of the first voltage; and a control module connected with the plurality of power modules, the control module being used for controlling the plurality of power modules to convert the input voltage into an output voltage, and controlling the remaining power modules to supply power in response to a failure of less than or equal to X power modules in the plurality of power modules, wherein the total number of the plurality of power modules is X+N, X and N are positive integers, and the sum of the rated powers of N power modules is equal to a planned load of the power module.