142 results about "Wattmeter" patented technology

The invention relates to a time-varying power high-precision calculation technology of an electric drive system under strong electromagnetic noise interference, and mainly solves the problem of inaccurate power calculation of the electric drive system under strong electromagnetic environment noise and frequency time-varying fluctuation scenes. According to the core technology, a dominant frequency fluctuation curve of a signal is obtained through dynamic tracking of a dominant frequency, and a dynamic band-pass filter changing along with the dominant frequency of the electric drive system is constructed; suppressing pulse noise by combining amplitude self-adaptive filtering of a nonlinear weighting function; a phase demodulation technology fusing zero crossing point correction and Hilbert transform is adopted to eliminate the phase interference problem caused by complex waveforms and weak noise signals; and finally, establishing a time-varying power physical model based on the sliding window. According to the technology, the power calculation accuracy of the electric driving system under the conditions of strong field environmental noise and continuous main frequency conversion is remarkably improved.

A calibration unit comprises a first port which is arranged for being connected to a measurement device; a calibration module comprising at least three different calibration standards for calibrating the measurement device; and a switching module configured to connect the first port with one of the at least three different calibration standards of the calibration module. A daisy chain port is arranged for being connected to a further calibration unit, to an external power meter, or to a device-under-test, DUT. The first port is connectable to the daisy chain port. An internal power meter is arranged within a housing of the calibration unit. The first port is connectable to the internal power meter; or an internal impedance tuner. The first port is connectable to the internal impedance tuner.

A grid-connection pre-synchronization method for a virtual synchronous generator parallel system, and an electronic device. The grid-connection pre-synchronization method for the virtual synchronous generator parallel system comprises: after receiving a pre-synchronization instruction, n virtual synchronous generators start to perform grid-connection pre-synchronization, wherein the grid-connection pre-synchronization comprises frequency and phase pre-synchronization, and amplitude pre-synchronization (S110). The frequency and phase pre-synchronization comprises: calculating control amounts for the frequency and phase pre-synchronization; according to the control amounts for the frequency and phase pre-synchronization, calculating a damping power; according to a mechanical power, an electromagnetic power and the damping power, calculating an output angular frequency difference of the virtual synchronous generators; and according to the output angular frequency difference of the virtual synchronous generator sand a rated angular frequency, determining a power angle of the virtual synchronous generators.

The invention discloses an improved flexible direct current fault control method for improving current differential protection adaptability, and belongs to the technical field of power system relay protection and new energy power generation system grid-connected control. The method comprises the following steps: detecting a voltage drop abrupt change signal and a negative sequence voltage signal of a flexible DC output end, and starting a control strategy when the signals are satisfied; detecting a terminal voltage signal and active power of a new energy sending-out terminal, and calculating a new energy side current phase angle and a power angle; calculating a flexible DC side current phase angle control value and a negative sequence dq axis current reference value based on the parameters; and controlling the flexible DC side to output a negative-sequence current corresponding to the negative-sequence dq-axis current reference value, so as to actively adjust the current phase of the flexible DC side, reduce the phase angle difference between the fault current of the flexible DC side and the fault current of the new energy side, and discriminate the internal and external faults of the region through traditional current differential protection. According to the invention, the degree of freedom is controlled and the current phase is adjusted by using the flexible direct-current side negative-sequence current to reduce the phase angle difference of the two sides, so that the problem that the current differential protection adaptability in the double-end weak feedback system is reduced is solved, additional hardware is not needed, and the power grid safety and the new energy stable grid connection are ensured.

The invention discloses a rapid power calculation method suitable for an electric energy meter and an acquisition terminal, the electric energy meter and the acquisition terminal, and relates to the technical field of electric power measurement. According to the method, voltage and current signals are sampled, direct-current components are removed, and harmonic interference is suppressed through band-pass filtering; estimating the frequency of the power grid in real time by using zero-cross detection and linear interpolation; processing the filtered voltage and current signals by adopting a delay cancellation model based on a rotation matrix, and eliminating a negative frequency component to generate a corresponding orthogonal vector; and synchronously calculating active power and reactive power through algebraic operation according to the orthogonal vector. According to the method, establishment time delay introduced by a traditional low-pass filter is avoided, rapid tracking of a power value can be achieved when the load power is subjected to step change, electric energy metering deviation in the transient process is effectively reduced, and meanwhile calculation accuracy and robustness under the power grid frequency fluctuation working condition are improved through a frequency self-adaption mechanism.

The invention discloses a fluctuation load power calculation method suitable for an electric energy meter and an acquisition terminal, the electric energy meter and the acquisition terminal, and belongs to the field of electric energy metering. The method comprises the following steps: continuously and synchronously sampling voltage and current signals of a power grid and filtering high-frequency harmonics; in-phase and orthogonal signals of voltage and current are adaptively estimated on the basis of a state observer under the condition that a direct current component is not removed, and a state estimation vector is obtained; inputting the voltage state estimation vector into a phase-locked loop, and estimating a voltage angular frequency and a phase through dq transformation; and calculating active power and reactive power according to the current state estimation vector, the voltage phase estimation value and the voltage d-axis component. The invention also provides a corresponding electric energy meter and a use and acquisition terminal. According to the method, the power change can be quickly tracked without lag under the fluctuating load working condition, response delay caused by traditional low-pass filtering is avoided, the dynamic metering precision is effectively improved, and the method is suitable for a complex power grid environment containing a direct-current component.

The invention provides a new energy transmission system new energy-storage cooperative support control method under multiple constraints of a voltage stability domain, and relates to the technical field of power system voltage stabilization. According to the method, a model of reactive power, grid-connected voltage, active power and system parameters is established based on a power flow equation, and a required reactive reference is calculated by combining a set voltage expected value and real-time output power; and under the constraints of the voltage ride-through threshold, the converter capacity, the short-circuit ratio and the power margin, executing a new-storage cooperative voltage support strategy. Under the working conditions of new energy fault ride-through, output power out-of-limit and the like, the voltage stability can be remarkably improved, the output capacity of a new energy station is enhanced, and safe and stable operation of the system is ensured.

Provided is a radio transmitter test system that enables accurate measurement of reflected wave power of an antenna. A radio transmitter test system includes: a power amplifier that amplifies power of a high-frequency signal from a signal generator; a simulative antenna for which a voltage standing wave ratio is variable and that is connected to a coaxial cable in place of an antenna; a directional coupler that is connected between the power amplifier and the simulative antenna, couples the high-frequency signal to the simulative antenna, and outputs traveling wave power and reflected wave power between the power amplifier and the simulative antenna; a power meter connected downstream of the directional coupler; and a control device, wherein the control device calculates, for each voltage standing wave ratio of the simulative antenna, a correlation coefficient indicating a correlation between traveling wave power and reflected wave power of the simulative antenna and traveling wave power and reflected wave power measured by the power meter, and calculates reflected wave power of the antenna by correcting, with the correlation coefficient, the traveling wave power and the reflected wave power measured by the power meter in a state where the simulative antenna is replaced by the antenna.

The invention relates to the technical field of power grid metering, in particular to a power grid time-varying power calculation method based on zero drift calibration, which comprises the following steps of: firstly, constructing a power grid time-varying power calculation system capable of compensating and calibrating phases of voltage and current; the system is composed of a current data acquisition unit, a voltage data acquisition unit, a data processing unit and a calibration unit, the current data acquisition unit is responsible for acquiring power grid current in real time, the voltage data acquisition unit synchronously acquires power grid voltage, and the calibration unit is responsible for outputting standard calibration signals. And the data processing unit calculates the phase difference between the voltage and the current and accurately adjusts the phase, so that effective compensation for zero drift is realized, and finally, the real-time power of the power grid is quickly and accurately calculated. According to the zero drift calibration technology, the time-varying power calculation precision and the reactive compensation effect of the power grid can be effectively improved, the real-time frequency modulation requirement is met, the stability of the power grid is enhanced, and the energy consumption loss is reduced.

The invention belongs to the technical field of digital circuits, and discloses a ubiquitous metering-oriented adaptive AC / DC wide-range electric energy metering system and method, and the system comprises a PGA, an ADC, a waveform extreme point judgment module, a PGA multiple calculation module and a two-dimensional AC / DC recognition module. Quantized burrs are inhibited; the PGA gain is dynamically adjusted based on the effective bit width occupancy rate, so that the signal amplitude is adaptively matched with the optimal range of the ADC; the frequency and amplitude features are combined to construct two-dimensional recognition logic, and alternating current and direct current signals are accurately distinguished; and a cooperative feedback mechanism of gain adjustment and AC / DC identification is established, and differential power calculation is realized. The method solves the problems that a traditional scheme is rigid in gain configuration, low in extreme value extraction precision, high in alternating current and direct current misjudgment rate and poor in system collaboration, and has the advantages of being high in self-adaption, accurate in recognition, good in real-time performance and flexible in scene adaptation.

The present application belongs to the technical field of new energy network construction type converter, and particularly relates to an asymmetric damping voltage controller for a network construction type converter and a control method thereof, comprising the following steps: step 1: obtaining the inductance current of a filter and the capacitance voltage in the current system; step 2: a power calculation module calculates active power and reactive power; step 3: an active control loop and a reactive control loop obtain the active power and the reactive power; the phase angle generated by the active loop control and the reference value of the inverter output voltage amplitude are calculated; step 4: the asymmetric damping voltage controller obtains the phase angle, the reference value of the inverter output voltage amplitude and the capacitance voltage; and the asymmetric damping voltage controller is used to suppress power oscillation to generate an output current reference value; and a current controller is used to generate a modulation voltage signal. The present application provides an effective technical means for improving the stability and dynamic performance of power electronic equipment in a high penetration rate new energy scene.

The application belongs to the technical field of power electronic control, and particularly relates to a kind of energy storage converter parallel control method and system.The method comprises: after Clark transformation, Park transformation of three-phase voltage signal and three-phase current signal output by inverter, active power and reactive power are calculated;Reference value of voltage loop and current loop is calculated, and prediction value is superimposed on current loop to obtain direct axis front end voltage and cross axis front end voltage, and then direct axis voltage and cross axis voltage are calculated;Direct axis voltage and cross axis voltage are subjected to SPWM modulation, and inverter bridge arm switch tube is driven to turn on and off to control inverter output.The prediction value superimposed in the application can quickly compensate the reference value required by current loop when load mutates, and then maintain the stability of voltage.

The invention relates to the technical field of hoisting machinery safety monitoring and control, and particularly discloses a portal crane moment limit protection method and system based on current verification. Real-time detection signals of a hoisting mechanism are obtained through a moment sensor, and a three-axis accelerometer is arranged at the connecting position of a steel wire rope to obtain swing signals; analyzing a jitter interference factor based on the steel wire rope jitter displacement, and judging the accuracy of a detection signal; on the premise that the signal is accurate, operation state detection of primary mechanical power calculation is carried out, then secondary operation state detection is carried out by combining the rated working current of the lifting frequency converter calculated by the detection signal and the real-time working current collected by the PLC, and the lifting mechanism is controlled to operate according to the detection result. Through multi-dimensional signal fusion and secondary verification, the detection precision and the overload judgment reliability are improved, the overload operation of equipment can be effectively prevented, and the operation safety of the crane and the service life of the equipment are guaranteed.

This invention discloses a method and system for measuring the frequency response of an electro-optic modulator based on a spectral analyzer. The system includes a laser, a 95:5 single-mode fiber splitter, an optical power meter, an electro-optic modulator, a control power supply, an RF signal generator, and a spectral analyzer. The measurement method includes the following steps: calculating a calibration factor to correct optical power drift through optical path splitting, driving the modulator by applying several discrete single-frequency RF points, and measuring the carrier power P0(f) using the spectral analyzer. i ) and the first-order sideband power P1(f i ), and determined by the power ratio R(f) i )=10 (P1‑P0) / 10 Combining the Jacobi–Anger expansion / Bessel function relation, the phase modulation index β(f) is solved by inverse solution. i Then, the phase transfer function H(f) at each frequency point is calculated and fitted. i The continuous frequency response S of the modulator is obtained. 21 This invention simplifies the testing process, reduces reliance on high-speed photodetectors and vector network analyzers, and enables high-precision electro-optic response testing of electro-optic modulators at high frequencies.

The invention relates to the technical field of power electronics, in particular to an auxiliary inverter. Before the output contactor group is closed, according to the current data acquired by the output current sensor group, estimating the front voltage amplitude of the contactors; calculating a d-axis component and phase information of the single-phase output branch voltage; calculating active power and reactive power according to the current data acquired by the output current sensor group; the droop control unit calculates droop control target frequency according to the active power and calculates droop control target voltage according to the reactive power; before an output contactor group is closed, a d-axis closed-loop output voltage value is adjusted by taking an axis component of a single-phase output branch voltage as a target value and taking a voltage amplitude as a feedback value; and after the output contactor group is closed, the droop control target voltage is taken as a target value, the shaft component of the single-phase output branch voltage is taken as a feedback value, and a shaft closed-loop output voltage value is adjusted.

The utility model relates to the technical field of IGBT (Insulated Gate Bipolar Translator) devices, in particular to an adjustable IGBT power distribution circuit, which comprises a driving module, an IGBT module, a measuring module and a main control module which are electrically connected in sequence, and the measuring module comprises a current sampling unit, a voltage sampling unit, a first analog-to-digital conversion unit and a second analog-to-digital conversion unit. The current sampling unit is used for acquiring current data entering a collector electrode of the IGBT module, the voltage sampling unit is used for acquiring voltage data of the collector electrode of the IGBT module, and the main control module calculates a power value according to the current data and the voltage data and controls the driving module. According to the utility model, the synchronous acquisition and high-precision digitalization of current and voltage signals are realized, the signal interference is obviously reduced, the accuracy of power calculation is ensured, the main control module dynamically adjusts the output of the driving module based on a real-time power value, the load change can be quickly responded, the power distribution efficiency is optimized, and local overload or resource waste is avoided.

The present invention relates to the technical field of wireless power transfer. Specifically disclosed are a clock synchronization-based method and system for calculating the efficiency of a dynamic wireless charging system. The method comprises: providing a satellite-disciplined clock at both a transmitting end and a receiving end; generating pulse signals of a first frequency and a second frequency and timestamp signals by means of satellite-disciplined clocks; when a control unit of the receiving end / the transmitting end receives the pulse signal of the first frequency, starting counting on the basis of the pulse signal of the second frequency, when the count reaches a preset count value, calculating the average power of a sampled voltage and a sampled current within the preset count value, and marking the average power with a timestamp tag on the basis of the timestamp signal; and when timestamp tags of the transmitting end and the receiving end are the same, on the basis of the power of the transmitting end and the power of the receiving end, calculating the system efficiency corresponding to this moment. In the present method and system, by using the satellite-disciplined clocks to realize time synchronization between the transmitting end and the receiving end, system efficiency can be calculated with high accuracy and minimal error.

The application discloses an inverter voltage sag optimization method and system based on voltage amplitude-d-axis current and frequency-q-axis current droop control, aiming to generate a reference voltage amplitude by a d-axis current and a reference frequency by a q-axis current. The application designs voltage amplitude-d-axis current and frequency-q-axis current droop control, directly obtains the reference voltage amplitude and frequency only by the d-axis current and the q-axis current. Compared with the traditional power droop to generate the voltage frequency reference, the application can effectively inhibit the amplitude of the sudden increase of the current during the voltage sag, optimize the transient characteristics of the converter under short-circuit fault, and achieve the purpose of protecting the inverter. Meanwhile, the active power and reactive power calculation and the corresponding filter link are cancelled, the control process is simplified, and the controller computing power is saved.

The invention discloses a polarization adjusting device and a polarization adjusting method. The polarization adjusting device comprises a light source assembly, a micro-ring resonant cavity, a photoelectric detector, a digital oscilloscope, an arbitrary waveform generator and a power meter module. The light source assembly comprises a light source, a scanning module and a polarization controller connected with the transmission end of the light source. The micro-ring resonant cavity comprises a first output part and a coupling part coupled with the polarization controller. The photoelectric detector is connected with the first output part. The digital oscilloscope comprises a first input part and a second input part used for receiving an electric signal output by the photoelectric detector, and the digital oscilloscope can display the trough of the Lorentz curve. The arbitrary waveform generator includes a second output portion and a third output portion. The second output part is connected with the light source. The third output part is connected with the first input part. The power meter module is connected with the scanning module. According to the polarization adjusting device and the polarization adjusting method, the light source assembly can be quickly and efficiently adjusted to be in the TE polarization state or the TM polarization state.

The specification provides a primary frequency modulation capability evaluation method and device. The method comprises: determining the system frequency variation type based on the real-time voltage frequency of the wind farm grid connection point; determining the target frequency modulation standby power and target rotor kinetic energy of the matching wind turbine according to the system frequency variation type; determining the effective frequency modulation standby power of the wind farm according to the target frequency modulation standby power of the wind turbine; determining the effective utilization kinetic energy of the wind farm according to the target rotor kinetic energy of the wind turbine; calculating the standby power reliability parameter of the wind farm based on the wind speed variation amount, the effective frequency modulation standby power of the wind farm; and performing primary frequency modulation on the wind farm according to the effective frequency modulation standby power of the wind farm, the effective utilization kinetic energy of the wind farm, and the standby power reliability parameter of the wind farm. The above method can solve the problem that the existing method cannot accurately evaluate the primary frequency modulation capability of the wind farm from the time and space dimensions.

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.

The invention discloses a wind power plant harmonic source positioning method, system and device and a medium. The method comprises the steps that standard-exceeding voltage and current harmonics of all nodes in a wind power plant and corresponding harmonic frequencies of the voltage and current harmonics are determined; according to the method, the system, the equipment and the medium, all-node instantaneous power calculation is carried out on the harmonic frequency of the standard exceeding frequency, the instantaneous active power of the standard exceeding harmonic at each node is determined, the position of the harmonic source is determined according to the direction of the instantaneous active power, and the method, the system, the equipment and the medium can carry out positioning analysis on the harmonic source.

The application provides a virtual power plant frequency modulation and peak regulation method, comprising the following steps: acquiring a wind and light load prediction curve, market price prediction information and a power grid next-day peak regulation demand curve, establishing a first planning model to obtain each controllable resource base point power plan and energy storage SOC plan of each preset time period of the next day; after the next day, every preset time period is executed: acquiring short-term wind and light load prediction data, actual operation state of each resource and real-time market price information, establishing a second planning model to correct each controllable resource base point power plan and energy storage SOC plan of the current time period, and determining a frequency modulation parameter of the current time period; according to the corrected each controllable resource base point power plan and energy storage SOC plan of the current time period, instructing corresponding equipment to execute; if a power grid frequency modulation instruction is received, adjusting the output of the frequency modulation resource according to the frequency modulation parameter of the current time period. The method solves the limitation problem of the virtual power plant in frequency modulation and peak regulation.

The application discloses a wind turbine phased power adjustment method, device, equipment and storage medium, and the method comprises the following steps: calculating the additional frequency modulation power of the wind turbine in the starting frequency modulation period according to the power shortage of the power system and the system wind energy penetration; calculating the additional frequency modulation power of the wind turbine in each subsequent frequency modulation period according to the additional frequency modulation power of the wind turbine in the starting frequency modulation period; wherein the additional frequency modulation power of the wind turbine in the subsequent frequency modulation period is less than the additional frequency modulation power of the wind turbine in the previous frequency modulation period; calculating the output power of the wind turbine in each frequency modulation period and the duration of each frequency modulation period; and adjusting the output power of the wind turbine in a phased manner according to the duration of each frequency modulation period and the output power of the wind turbine in each frequency modulation period. Through the embodiment of the application, the secondary drop of the system frequency after the end of the frequency support can be inhibited.

The invention discloses an electric energy meter flexible conditioning circuit connected with a distributed power supply, and aims to solve the problems of non-ideal alternating current signal distortion and compatibility of a front-end conditioning circuit of an electric energy meter. The circuit comprises an input buffer module, a conditioning engine module and a digital conversion module, the input buffer module is used for isolating and capturing a non-ideal alternating current signal accessed by a distributed power supply, and the conditioning engine module is used for correcting the non-ideal alternating current signal in real time to generate a pure alternating current waveform; and the digital conversion module is used for converting the pure alternating current waveform into a digital signal and switching a bidirectional power metering mode according to the digital signal. Through an integrated closed loop of the modules, a flexible flow of signals from isolation capture to correction conversion is formed, adaptive processing of signal characteristics such as harmonic distortion, frequency fluctuation and direct current offset is realized, and an electromagnetic compatibility self-healing module, a thermal budget intelligent throttling module and a multi-channel phase synchronization module are further introduced in parallel. The robustness is enhanced, the energy efficiency is optimized, and multiphase metering adaptation is expanded.

This invention discloses an amplitude stabilization method and a level control device for radio power metering. The method measures the DC voltage of the working thermistor Rt1 and the compensation thermistor Rt2 in the absence of an AC signal using a single-arm current source circuit; and measures the DC voltage of the working thermistor Rt1 and the compensation thermistor Rt2 in the presence of an AC signal using the same circuit. The coupling degree C and the target power value P are obtained through a human-machine interface module. g The DC voltage without AC signal, the DC voltage with AC signal, the coupling degree, and the target power value are input to the signal processing module, which outputs the target power characterization voltage U. g and the current power characterization voltage U p Using an integral limiting circuit to limit U g and U p It is converted into a modulation voltage and sent to a control signal source or an electrically adjustable attenuator to achieve stable control of radio power and improve the accuracy and stability of power measurement.

The invention discloses a control strategy for a flexible chopping type direct-current energy consumption device. When a preset unlocking condition is met, unlocking the flexible chopping type direct-current energy consumption device, and determining a surplus power calculation value of the direct-current system; according to the ratio of the surplus power calculation value of the direct current system to the rated transmission power of the direct current system, the duty ratio reference value of the energy consumption valve switching signal is determined; according to the deviation between the direct-current voltage and the direct-current voltage reference value, the duty ratio correction value of the energy consumption valve switching signal is determined; the reference value is corrected through the correction value, and the energy consumption valve switching signal duty ratio is obtained; dC voltage and energy consumption are controlled according to an energy consumption valve switch pulse signal obtained through duty ratio modulation. The problem that an existing control strategy cannot be suitable for a flexible chopping type scheme is solved, when the duty ratio of the energy consumption valve switching signal is determined, the surplus power of the direct current system and the real-time deviation of the direct current voltage during unlocking are considered, the actual value of the direct current voltage can follow the direct current voltage reference value all the time, and therefore the energy consumption function is achieved.

The utility model relates to a circuit for solving frequency multiplication interference of a power meter. The circuit comprises a signal source, a frequency multiplication processing board and a mother board, the signal source forms two paths of input signals; the frequency doubling processing board is provided with a first input signal interface, a VCXO input signal interface, a first output signal interface and an MCU main chip; an ADC chip, a VCXO crystal oscillator and a second input signal interface are arranged on the mother board, the MCU main chip is used for calculating the frequency multiplication relation between the first output signal interface and the VCXO input signal interface, and the result calculated by the MCU main chip outputs voltage through the first output signal interface to control the VCXO crystal oscillator. The utility model relates to a circuit for solving frequency multiplication interference of a power meter, in particular to a circuit for solving frequency multiplication interference of a power meter, which is characterized in that when the frequency of an input signal and the output frequency of a VCXO have frequency multiplication, an MCU outputs a control voltage to adjust the frequency output of the VCXO, so that the frequency of the input signal and the output frequency of the VCXO have no frequency multiplication relationship.

The plasma processing apparatus includes a radio-frequency power supply, a pair of plasma electrodes, a matching box located between the pair of plasma electrodes and the radio-frequency power supply and having an impedance matching circuit including a first variable inductor and a second variable inductor, and a control unit. The control unit executes performing impedance matching by varying the inductance of the first variable inductor and the inductance of the second variable inductor, obtaining the efficiency of the matching box based on the inductance of the first variable inductor and the inductance of the second variable inductor after the impedance matching and the efficiency map, and calculating output power of the radio-frequency power supply based on the obtained efficiency of the matching box and supply power supplied to the plasma electrodes, and controlling the output power of the radio-frequency power supply based on the calculated output power.

The application relates to the technical field of radio frequency signal processing, in particular to a radio frequency absorption rate determination method, device and computer readable storage medium. The method comprises the following steps: collecting instantaneous radio frequency output power in a single radio frequency pulse duration at a set time interval; calculating an equivalent pulse width of the single radio frequency pulse according to all the collected instantaneous radio frequency output powers; calculating pulse output energy of the single radio frequency pulse according to the equivalent pulse width; and calculating the radio frequency absorption rate of the radio frequency in a target time length according to the pulse output energy of the single radio frequency pulse. The method collects the instantaneous radio frequency output power of a single radio frequency pulse, determines the equivalent pulse width of the single radio frequency pulse, calculates the radio frequency absorption rate based on the equivalent pulse width, improves the accuracy of the radio frequency absorption rate calculation, and thus more effectively prevents the target, especially the target subjected to magnetic resonance detection, from being damaged due to excessive heat.