17results about How to "Accurate power" patented technology

The invention relates to the technical field of laser gyroscopes, in particular to a dynamic power power supply control system and method for a laser gyroscope, and the system comprises a power supply module, a power collection module and a main control module, the power acquisition module is used for recording and acquiring the output power of a laser of the laser gyroscope, and the main control module performs operation processing based on the actual output power, recorded and acquired by the power acquisition module, of the laser of the laser gyroscope to obtain an adjusting instruction and adjusts power supply parameters of the power supply module; a feedback control unit in a main control module calculates a preliminary adjustment instruction according to a difference value between actual output power and set power, and a feedforward control unit generates an adjustment instruction correction amount according to a laser gyroscope condition parameter after power supply parameter adjustment so as to correct the preliminary adjustment instruction; through the cooperative work strategy of the feedforward control unit and the feedback control unit, the response speed, the control precision and the adaptability of the system are improved.

The invention relates to the technical field of distributed photovoltaic power generation regulation and control realized by an intelligent Internet of Things electric energy meter, and discloses a flexible regulation and control method and device for surfing the Internet by residual electricity, computer equipment and a storage medium, which are applied to a flexible regulation and control system, and the flexible regulation and control system comprises a photovoltaic inverter; the method comprises the following steps: acquiring property right demarcation point power and power generation metering point power; calculating a generated power difference value based on the property right demarcation point power and a preset generated power control parameter; calculating a power generation side real-time power control limit value based on the power generation power difference value and the power generation metering point power; and carrying out flexible regulation and control on the generated power of the photovoltaic inverter based on the real-time power control limit value of the power generation side. According to the invention, flexible regulation and control during group regulation and group control of the transformer area photovoltaic inverters in a photovoltaic power generation surplus power grid mode are realized, the regulation and control accuracy during group regulation and group control of the photovoltaic inverters is improved, and the safety and stable operation of a power grid are ensured.

The embodiment of the invention provides a self-adaptive switching method and device for a network construction mode and a network following mode of an energy storage converter, a storage medium and electronic equipment, and relates to the technical field of grid-connected control of the energy storage converter. Judging the strength of the power grid according to the output result of the primary frequency modulation function of the energy storage converter, and switching to a grid following mode when the strength of the power grid is high; and when the energy storage converter operates in the grid following mode, judging the strength of the power grid according to the variation of the voltage frequency and amplitude before and after the current regulation of the power grid, and switching to the grid construction mode when the strength of the power grid is weak. According to the technical scheme, the dependence on a power grid strength detection function can be weakened, reasonable self-adaptive switching can be realized under relatively simple algorithm complexity, and meanwhile, the requirement on MCU hardware is reduced.

The invention discloses a low-carbon energy-saving dehumidification and humidity control method and system for a transformer substation operating environment, and relates to the technical field of dehumidification and humidity control, and the method comprises the steps: respectively installing a plurality of sensors at different positions in the transformer substation operating environment; the sensor collects multi-dimensional independent variable data and transmits the data to the data processing module; the data processing module processes the data and then generates a regulation and control instruction in combination with control logic; and the regulation and control module regulates and controls the dehumidification power of the dehumidification equipment in a negative feedback mode according to the regulation and control instruction. According to the invention, the data is acquired by using the sensor, then the regulation and control instruction is generated after data analysis, and then the dehumidification power of the equipment is controlled, so that the power can be matched with each other on the basis of realizing automatic humidity control and ensuring reliable work of the transformer substation, and the effects of low carbon and energy saving are achieved. When the power is controlled, negative feedback compensation type control is adopted, so that the power can be controlled more accurately.

The application provides a coherent optical module optical power calibration method and device, a coherent optical module and a medium, and relates to the technical field of optical communication.In the transmitting end, a responsivity lookup table is formed based on the responsivity of each transmitting light path under different working conditions, and the target sampling voltage corresponding to each transmitting light path is calculated in combination with the dark light voltage and the target value of the transmitting optical power, the gain of the feedback adjustment driver is adjusted, the power accuracy can be ensured, the modulation signals on each transmitting light path can be kept balanced, the joint calibration of the power and the signal quality is realized.In the receiving end, the corresponding relationship between the gain control voltage average value and the received optical power is established, the reference received optical power is obtained, and the accurate actual received optical power can be obtained in combination with the received optical power error under different working conditions in the power error lookup table; the method does not need to additionally configure a photoelectric detector on each received light path, and the chip volume and the design complexity are reduced.

The embodiment of the invention relates to a photovoltaic equipment control method and device, photovoltaic equipment and a storage medium, and the method comprises the steps: determining a power difference value between the photovoltaic output power of the photovoltaic equipment and the load power of the photovoltaic equipment when the photovoltaic equipment is determined to be in a reverse power state; determining the charging current of a capacitive energy storage module of the photovoltaic equipment according to the power difference value; and charging the capacitive energy storage module according to the charging current and the charge state of the capacitive energy storage module, and adjusting the load power according to the charge state. Therefore, the charging current can be determined based on the power difference value, and energy storage charging and load power can be synchronously adjusted in combination with the charge state of the capacitive energy storage module, so that the system can realize rapid and accurate energy absorption and power distribution when reverse power occurs, reverse power delivery is effectively avoided, and the overall regulation and control efficiency and stability are improved.

The invention relates to the technical field of railway wireless communication systems, and discloses a railway tunnel wireless coverage system and method based on the relay technology, and the railway tunnel wireless coverage method based on the relay technology comprises the following steps: obtaining train operation comprehensive information and train historical communication demand information; the train operation comprehensive information is constructed into ordered structure data, and the train historical communication demand information is constructed into time sequence data; and inputting the structure data and the time sequence data into the wireless optimization model, and outputting a railway tunnel wireless coverage optimization strategy. According to the invention, the signal intensity and stability in the railway tunnel can be improved, and the smooth wireless communication of the train during the tunnel operation can be ensured.

The invention discloses a control system and method for continuously adjusting the output power of a low-clutter system, and the system comprises a local oscillator source, a power divider, and a plurality of klystron amplification branches connected in parallel, the local oscillator source generates an initial microwave signal, the signal is distributed to each klystron amplification branch connected in parallel through the power divider, and the klystron amplification branches are connected in parallel. A PIN electrically controlled attenuator in the klystron amplification branch receives a control voltage from a control system, and a microwave switch receives a digital switch signal from the control system and is used for on-off control of the branch; the signal processed by the klystron amplification branch is amplified by the klystron and then enters the bidirectional coupler, and the bidirectional coupler is used for coupling sampling signals of incident power and reflection power and sending the sampling signals to the control system; the microwave power output by the bidirectional coupler is injected into the plasma; the method has the advantages that the problem that the power regulation range of an existing system is limited, and particularly continuous regulation cannot be achieved in a low-power section is solved.

This invention discloses an online performance estimation method for fuel cell stacks based on the fusion of multiple models and algorithms, comprising the following steps: obtaining the physical parameters of the fuel cell stack; constructing N voltage estimation models for the fuel cell stack based on the physical parameters; sampling M parameter estimation algorithms to solve the voltage estimation models of the fuel cell stacks, obtaining the constant term coefficients of the voltage estimation models for MN groups of fuel cell stacks; based on a fitness evaluation system, achieving adaptive estimation of the constant term coefficients of the voltage estimation models for the N fuel cell stacks, determining the most matching parameters and corresponding algorithm weights for the current fuel cell operating range; and achieving online estimation of the voltage and power of the fuel cell stack based on the most matching parameters and corresponding algorithm weights for the current fuel cell operating range. This invention improves the accuracy and robustness of parameter estimation across all operating conditions and the entire life cycle, while controlling computational complexity to meet the requirements of real-time applications.

This application provides a power control method, a terminal, and a network device. In the method, when any one of two terminals that perform direct communication determines a transmission power of the terminal, the terminal determines the transmission power based on at least one of a path loss between the two terminals that perform direct communication and a channel quality status of another terminal used as a receive end in the two terminals that perform direct communication, so that a more accurate power can be determined, and therefore signal transmission can be performed based on the determined transmission power, to avoid, to some extent, using a power higher than an actually required transmission power to perform signal transmission.

The utility model relates to the technical field of radio frequency signals, in particular to a power supply device for a broadband signal simulator, which comprises a processing module, a signal generation module, a clock module and a power supply module, the power supply module comprises a power supply monitoring unit, a heat dissipation power supply unit and a power supply conversion unit, the power supply monitoring unit is connected with the heat dissipation power supply unit, and the heat dissipation power supply unit is connected with the power supply conversion unit. The heat dissipation power supply unit is connected with the processing module, the power supply conversion unit is respectively connected with the signal generation module and the clock module, independent power supply is carried out on a fan in the processing module through a transistor and a voltage suppressor, and an independent power supply path is constructed through connection of the transistor and the voltage suppressor. And the fan can independently obtain the required power supply support.

The invention discloses a photovoltaic power station power short-term prediction method based on improved ESOA-GA, and relates to the technical field of photovoltaic power stations, an initial population is randomly generated by using an ESOA algorithm, individual prediction precision is analyzed in combination with a data set after feature extraction to obtain initial fitness, local search is carried out around the current position of an individual on the basis, and the initial fitness is obtained. The individual is updated by calculating the pseudo gradient estimated value, and the optimal solution in the local area can be deeply mined in the process. Through multiple rounds of iteration, the individual quality can be effectively improved, each individual is preliminarily optimized, and a high-quality initial population is provided for a subsequent genetic algorithm. A genetic algorithm is introduced on the basis of an ESOA preliminary optimization individual. A GA simulates a natural selection process, calculates a selection probability to screen individuals to be optimized, and generates mixed individuals through crossover operation, so that searching can be performed in a wider solution space, and falling into a local optimal solution is avoided.

The invention belongs to the technical field of reactor design and operation, and particularly relates to a nuclear power plant low-power reactor core power measurement method, which comprises the following steps: step 1, measuring the thermal power of a heat source outside a reactor core during the first zero power debugging period; 2, measuring the power of decay heat in a zero power period after power operation; 3, calibrating the time from the current input parameter of the decay heat semi-empirical formula to the shutdown time of the reactor by adopting the decay heat obtained by measurement; and step 4, measuring the reactor core power under low power after operation. According to the method disclosed by the invention, mutual power correction is realized by utilizing heat balance or quasi-heat balance of the primary side and the secondary side of the steam generator, and accurate reactor core power under low power is obtained.

The application provides a gain compensation method, device, optical amplifier and storage medium, and belongs to the technical field of optical communication. The method is applied to an optical amplifier. In the method, after the power of input signal light changes, the power of pump light of the optical amplifier is adjusted based on power change information of the input signal light, the input signal light is amplified by using the pump light with the adjusted power, and the input signal light is gain compensated. In this way, the input signal light can be gain compensated only by detecting the power change information of the input signal light, the optical amplifier does not need to be in a full wave state for a long time, and therefore, the failure rate of the optical amplifier can be reduced.

The invention discloses a line loss prediction and optimization method for a three-phase unbalanced low-voltage transformer area, and the method comprises the following steps: 1, building a line loss sensitivity matrix and a line loss prediction model, and taking SOP active and reactive output increments as control variables; 2, establishing a rolling optimization model and solving a control variable sequence of N time periods in the future by taking the minimum SOP operation cost and distribution network three-phase unbalance degree and operation loss as an objective function and taking the condition that node voltage and power meet operation requirements as a constraint; step 3, only issuing a first instruction of the control variable sequence, namely SOP active and reactive transmission power at the k + 1 moment; and 4, measuring the actually measured power of the system at the k + 1 moment as an initial value at the k + 1 moment, taking the error amount as the correction amount of the prediction model, inputting the correction model, performing a new round of optimization to obtain a new line loss sensitivity matrix, and returning to the step 1. According to the method, the transmission power of the SOP is regulated and controlled, rolling optimization is carried out on the line loss of the three-phase unbalanced transformer area, and the deviation of the prediction model is corrected in the optimization process.

An eddy current transmission stepless speed change type tidal current generator set belongs to the field of tidal current / ocean current power generation, and comprises a tidal current impeller, a main transmission shaft, a planetary gear train, an electromagnetic eddy current assembly and a permanent magnet generator, the tidal current impeller is used for converting captured ocean current kinetic energy into mechanical kinetic energy of the planetary gear train, and the tidal current impeller is fixedly connected with the main transmission shaft; the main transmission shaft is connected with the input side of the planetary gear train, the output side of the planetary gear train is connected with a copper disc rotor of the electromagnetic eddy current assembly, a permanent magnet disc rotor of the electromagnetic eddy current assembly is in transmission connection with the permanent magnet generator through the parallel shaft gear train, and the permanent magnet disc rotor and the copper disc rotor can freely and relatively rotate. The device is simple, compact, stepless and continuous in speed change and high in efficiency.

The application discloses a network-constructing converter control method, system, device and medium, and belongs to the technical field of converter control. The method is as follows: determining a reference current according to real-time inductance current and real-time capacitance voltage of a linear virtual oscillator, and active power reference value and reactive power reference value of a target converter; obtaining real-time alternating current of the target converter to determine a given current; obtaining instantaneous inductance current and instantaneous capacitance voltage of the linear virtual oscillator according to the given current to determine a frequency locking direction; obtaining a target capacitance value according to the frequency locking direction and total current of the linear virtual oscillator to obtain adjusted inductance current and adjusted capacitance voltage of the linear virtual oscillator; and obtaining a voltage modulation reference value of the target converter to control the target converter. Therefore, the application can solve the technical problems of complex and unstable network-constructing converter control in the prior art, and realizes efficient control of the converter.