179 results about "Power correction" patented technology

The invention discloses an operation collaborative optimization method for an optical storage direct current flexible interaction system. Comprising the steps of collecting operation data such as photovoltaic output, an energy storage state, household load power and direct current bus transmission power, fusing power market price information, and constructing a multi-dimensional time series data set; then, predicting an adjustable load capacity interval of the system based on a coupled physical constraint neural network model embedded with DC bus power balance, voltage constraint and equipment operation limitation; further constructing a state-action space, solving a Pareto frontier by adopting a multi-objective optimization algorithm, and generating a light storage and home load collaborative scheduling strategy set; then combining the real-time operation state and the prediction deviation information, applying a voltage-power droop control mechanism to carry out strategy decoupling, and generating an energy storage power correction amount and a flexible load priority control instruction; and finally, a control instruction is issued to the optical storage direct flexible system, so that collaborative optimization operation with consideration of economical efficiency, safety and comfort of the system is realized.

The invention discloses a non-contact power supply three-stage control system based on series redundancy, and belongs to the field of non-contact power supply control. Comprising a power correction module, a voltage conversion module, a full-bridge inversion module, a cooperative control module, an analysis adjustment module, a monitoring switching module, a simulation maintenance module, a communication security module, a remote interaction module, an energy efficiency optimization module and a diagnosis recording module. High conversion efficiency can be dynamically kept under different loads and working conditions, energy loss is reduced, electric energy quality is remarkably improved, damage and misoperation under abnormal working conditions are prevented, high-reliability continuous power supply is achieved, PID parameters can be dynamically adjusted or direct control quantity can be generated, the system adapts to complex and changeable operating environments, and failure rate and shutdown loss are reduced.

The invention relates to the technical field of modular control systems, in particular to a transformation and cooperative operation method and system for a modular control system of a wire barrow, and the method comprises the following steps: obtaining tension data, calculating a change rate, comparing a critical interval related torque, calculating a power correction value, taking a position difference vector, calculating a deviation angle, and comparing a correction steering parameter; according to the method, the tension change rate is obtained to achieve dynamic trend recognition, the torque control response precision is improved, driving and steering parameters are comprehensively judged through the speed, the path deviation and the position difference vector, the advancing stability and the path consistency are improved, and the method has the advantages of being simple in structure, convenient to operate and high in practicability. Guiding deviation and steering correction comparison is combined, guiding precision is enhanced, an adjusting instruction is generated based on the real-time distance and the advancing direction, torque proportion correction is linked, it is guaranteed that the multi-vehicle distance is stable, signal fusion and real-time feedback improve the adaptability to interference and path changes, and the flexibility and safety of collaborative operation are enhanced.

A motor control device is provided in a vehicle equipped with a plurality of motors connected to a battery. The motor control device includes processors corresponding to the motors respectively. Each of the processors derives first power, derives second power, transmits information indicating the second power to another processor, acquires information indicating the second power derived by the another processor, derives third power, acquires fourth power, acquires a power limit value of the battery, derives a control power limit value, distributes the control power limit value to the motor corresponding to the own processor based on an axle torque ratio of the plurality of motors, derives an individual power limit value of the battery for the motor, derives a power correction amount of the first power, corrects the torque instruction value of the motor corresponding to the own processor, and operates the motor according to the corrected torque instruction value.

The invention discloses a new energy automobile charging process inspection, diagnosis and charging integrated system, and relates to the technical field of new energy automobile charging control. The system comprises a central analysis module and a plurality of chargers connected with the central analysis module. The method comprises the following steps: collecting environmental data in real time through a charger, combining the environmental data with a battery state by a battery management module, and matching a power correction coefficient based on a lookup table or an artificial intelligence model to determine a target power upper limit; meanwhile, the central analysis module groups the chargers according to target power upper limit change and distributes the surplus capacity of the power station in proportion; according to the method, power is corrected through two dimensions of environment and battery state, limitation of single parameter correction is avoided, safety risks of coupling of an extreme environment and battery aging are effectively avoided, and charging safety is guaranteed; power is distributed according to dynamic grouping and proportion, the problem of capacity waste or overload of traditional unified distribution is avoided, and the capacity utilization rate of the charging station is improved.

The invention relates to the technical field of thermal power generation, in particular to a closed circulation cold end optimization method, device and system, and the method comprises the following steps: obtaining the historical operation data of a unit from a power plant monitoring information system, the data comprises circulating water flow, circulating water inlet temperature, circulating water outlet temperature, condenser backpressure water pump motor current, generator power, medium and low pressure heat supply steam flow, condenser steam-water temperature and condenser water inlet and outlet pressure; s2, performing abnormal value processing on the data obtained in the step S1, namely screening out an abnormal value, and repairing and filling the abnormal value by using an interpolation method; based on the actual condition of the power plant, the unit load and the steam admission amount of the condenser are fitted through a large amount of historical data in the step S2; the total power for starting different numbers of circulating water pumps and fans and the water flow corresponding to the circulating water pumps are determined according to the historical data in the step S2; respectively establishing a condenser model and a cooling tower model; constructing a circulating cooling system model, coupling the condenser model and the cooling tower model, carrying out iterative calculation until convergence or reaching the maximum number of iterations, and obtaining the condenser outlet water temperature, the cooling tower outlet water temperature, the condenser back pressure, the vacuum degree and the power generation power; fitting a correction coefficient curve by referring to the technical specification of a power plant and combining the historical data in the step S2 with the condenser backpressure-generated power correction coefficient graph; and calculating the generated power and the net output power according to the unit load and the auxiliary machine consumption, and outputting an auxiliary machine configuration scheme corresponding to the maximum net power.

The invention discloses a network construction type power synchronization control method and device, electronic equipment and a storage medium, which are used for solving the technical problem that the current network construction type power electronic equipment power control means cannot completely eliminate the negative sequence active power influence and the control effect is poor. The method comprises the following steps: acquiring a three-phase electric signal of the network construction type power electronic equipment; positive and negative sequence separation decoupling based on a double-second-order generalized integrator is carried out on the three-phase electric signal to obtain a dq-axis positive and negative sequence electric signal; calculating positive and negative sequence active power according to the dq-axis positive and negative sequence electric signals; and performing power synchronous control considering negative sequence power correction according to the positive and negative sequence active power, and outputting the frequency and the phase angle of the network construction type power electronic equipment.

The invention provides a power distribution method, device and equipment of an electricity-hydrogen hybrid energy storage system and a medium, and belongs to the technical field of energy storage. The electricity-hydrogen hybrid energy storage system comprises a super capacitor, a lithium battery and a hydrogen energy storage subsystem, and the method comprises the following steps: decomposing the total regulation power of the electricity-hydrogen hybrid energy storage system to obtain high-frequency power, intermediate-frequency power and low-frequency power; correcting the high-frequency power according to a first charge state value of the super capacitor to obtain a first power correction value and a first optimal adjustment power of the super capacitor; according to the first power correction value and a second charge state value of the lithium battery, correcting the intermediate frequency power to obtain a second power correction value and a second optimal adjustment power of the lithium battery; and correcting the low-frequency power according to the second power correction value and the health state value of the hydrogen energy storage subsystem to obtain third optimal adjustment power of the hydrogen energy storage subsystem. The energy utilization rate and the operation stability of the electricity-hydrogen hybrid energy storage system can be improved.

The invention relates to a unified distributed dynamic optimization control method and device for a micro-grid in an autonomous station area, and the method comprises the steps: embedding a frequency regulator at a virtual synchronous converter, estimating the average frequency of the autonomous micro-grid through the frequency regulator, comparing the average frequency with a rated frequency to generate an error term, and calculating the optimal value of the error term; inputting the error term into an integrator to obtain a first power correction term; embedding a benefit optimizer at the virtual synchronous converter, generating a neighborhood error through the benefit optimizer, and inputting the neighborhood error into an integrator to obtain a second power correction term; and adding the first power correction item and the second power correction item with a reference power item to obtain a power setting item, and taking the power setting item as the input of the virtual synchronous converter. According to the invention, stable voltage and frequency support can be provided, and global optimal control is realized.

The invention relates to the technical field of photovoltaic power supply management, and discloses a photovoltaic parking building power supply management method, device and system, and a storage medium. The method comprises the steps of determining real-time irradiation and component temperature data of a parking building ceiling photovoltaic component matrix, calculating an actual light receiving area according to component surface shadow distribution, and generating a photovoltaic output power correction parameter in combination with a historical attenuation coefficient; constructing a photovoltaic power generation capacity fluctuation sequence in unit time based on the parameters, identifying a power generation capacity decline time period and a power output gap, and marking the power generation capacity decline time period and the power output gap as a power supply unstable interval; according to the interval time sequence distribution, matching real-time load demand data of the charging piles in the building, calculating the power difference between the load demand and the power generation capacity, and generating a priority power supply sequence table; and dynamically distributing photovoltaic power to charging loads with different priorities according to the sequence table, adjusting charging and discharging threshold values of the building energy storage system, and generating a photovoltaic power dispatching instruction. The method can accurately evaluate the power generation capacity, respond to power generation fluctuation and optimize power distribution.

The invention relates to the technical field of power regulation, in particular to a refrigeration control strategy optimization method based on cooling capacity storage and electricity price change, which comprises the following steps of: generating an energy efficiency parameter correction result by collecting a cooling capacity and refrigerant temperature difference, calculating a cooling capacity demand and a cooling capacity difference value and combining real-time electricity price and energy efficiency parameter normalization; the method comprises the steps of calculating a difference value between a cooling capacity demand and a refrigerating capacity, analyzing a power correction coefficient and an electricity price section, setting a cold storage instruction and a cold release instruction, adjusting a cold storage or cold release strategy in combination with an electricity price trend, generating an electricity price response control strategy set, and optimizing cold storage power adjustment, and comprises the steps of calculating a difference value between the cooling capacity demand and the refrigerating capacity, combining real-time electricity price and energy efficiency parameter normalization and fitting an energy efficiency parameter correction result; based on electricity price segmentation analysis, a proper cold storage or cold release instruction is set, the energy efficiency of equipment in a peak-valley electricity price interval is improved, the electricity price trend is analyzed to adjust a cold storage or cold release strategy, energy consumption waste is avoided, finally, the electric energy utilization efficiency is improved, the cost is reduced, and the flexibility and adaptability of a refrigeration trolley are enhanced.

The invention discloses an electric vehicle hybrid energy storage system energy management method fused with a Hemma particle swarm algorithm LSTM, and the method comprises the steps: constructing a multi-layer LSTM neural network controller to learn the characteristics of a driving condition, and minimizing the stress of a battery; constructing a fractional order integral derivative (FOID) controller, outputting a power correction component, and decomposing the component into a battery power reference component and a supercapacitor power reference component; according to the method, an improved He-Marx particle swarm algorithm is utilized, LSTM weight and FOID controller parameters are optimized in a combined mode through a multi-objective optimization function (including battery root-mean-square current and voltage errors), optimization training is carried out on the weight and bias of a neural network controller, and power distribution between a battery and a supercapacitor in the hybrid energy storage system of the electric vehicle is controlled in real time; an LSTM power distribution result is adaptively corrected through a dynamic weight mechanism, and bus voltage fluctuation is controlled within a range of + / -3%; and the final power reference value is synthesized through dynamic weighting, so that the peak current of the battery is remarkably reduced.

The invention relates to the technical field of power system automation, and discloses a cooperative control method, system and device for inverters in a power distribution area and a medium, and the method comprises the steps: carrying out the identity authentication of the inverters in the power distribution area through constructing a distributed authentication platform, and constructing a logic neighbor network of the inverters; determining the operation capability of the inverter according to the physical constraint and power operation data of the inverter, and constructing a multi-time scale coordination framework according to the real-time demand of the power distribution area to determine a bidding strategy set of the inverter; constructing a transformer area clearing model considering the safety of the power distribution transformer area, and solving the transformer area clearing model according to the logical neighbor network and a distributed optimization algorithm to obtain a power control instruction of an inverter; the distributed authentication platform monitors the operation state of the power grid in the power distribution area, and when the risk is triggered, a security check algorithm is started to correct the power control instruction, and a power correction instruction is obtained to control the inverter to execute; and under the condition of considering the safety and the cost, the refined cooperation of the district level is realized.

The invention relates to the technical field of charging pile charging control, in particular to a flexible charging regulation and control system and method for a charging pile, and the method comprises the steps: obtaining real-time service parameters of the charging pile; calculating a stress accumulation item and a stress dissipation item; the equivalent lithium ion concentration stress of the current period is obtained through updating in combination with the stress accumulation item and the stress dissipation item; calculating a stress suppression item; generating a correction function; generating a dynamic current limit value by combining the stress suppression item, the correction function and a preset reference maximum allowable current; resolving a request current based on the power grid power instruction and the battery terminal voltage; generating a scheduling feasibility index in combination with the request current and the dynamic current limit value; according to the scheduling feasibility index, hierarchical power correction is executed, and actual issuing power is output; according to the invention, the operation safety of the battery is greatly improved, and the overall value of battery assets is greatly prolonged.

The application discloses a laser cutting thermal deformation suppression method and system integrated with temperature control feedback, and a medium, relates to the technical field of laser cutting, and comprises the following steps: according to the driving power supply of a laser and a preset cutting task, a first power instruction is issued to the driving power supply to provide constant current driving; under the first frequency response requirement, the cutting molten pool temperature is collected, power correction analysis is carried out according to the preset target temperature interval, a first power correction signal is generated, the output power of the laser is dynamically adjusted, and the cutting speed, the auxiliary gas flow or the cooling intensity are cooperatively adjusted; under the second frequency response requirement, the local temperature field distribution of the workpiece is collected, the thermal accumulation degree of the thermal influence area is analyzed, and the decision and control of the skip area, the speed adjustment or the cooling gap are executed. The application solves the technical problem of thermal deformation caused by inaccurate temperature control in the laser cutting process in the prior art, and achieves the technical effects of effectively suppressing thermal deformation, improving cutting quality and precision in the laser cutting process.

The application discloses a power following compensation correction control method for a range extended electric vehicle, and steps are as follows: S1, power correction: initial demand power generation is calculated, and final power generation is obtained by correction according to current atmospheric pressure, SOC and load compensation; S2, speed correction: first correction power generation speed and power generation torque between maximum and minimum values are calculated, second correction power generation speed and simulation speed are calculated and accumulated, and final power generation speed is obtained together with preset maximum power generation speed; S3, torque correction: initial power generation torque is calculated according to final power generation and final power generation speed, feedforward correction torque is calculated according to feedforward compensation control, and finally, final power generation torque is obtained. The application also discloses a power following compensation correction control device and a computer system for the range extended electric vehicle. The application can ensure good driving following property under the premise of optimal fuel consumption and NVH performance, and can be widely applied in the field of the range extended electric vehicle.

A single-phase voltage-doubler interleaved parallel power correction circuit, the correction circuit comprising an AC power supply U g , inductance L1, inductance L2, diode D1-D8, switch S1-S2, capacitor C1, capacitor C2, capacitor C3, load R L ; switch capacitor C3, capacitor C1, diode D7, diode D8 are connected to constitute a switch capacitor circuit, forming a voltage doubling structure. The present application combines the advantages of single-phase interleaved parallel technology and voltage-doubler rectifier circuit, through multiple power converter units interleaved parallel operation, and adopts voltage-doubler rectifier circuit to realize voltage multiplication. Compared with the traditional rectifier, this technology can effectively reduce the voltage stress of power devices, input current THD and the size of EMI filter through multiple power converter units interleaved parallel operation, thereby improving the overall performance and reliability of the system. At the same time, the voltage-doubler rectifier circuit can also be designed and adjusted according to the needs to adapt to different input and output voltage requirements.

The invention relates to the technical field of power control, in particular to an active regulation space quantitative evaluation method considering active voltage coupling influence, and the method comprises the steps: firstly constructing a steady-state power flow equation containing DC control characteristics, correcting a Jacobian matrix through introducing a commutation bus power correction, and building a voltage active sensitivity index; probabilistic load flow calculation is carried out in combination with a new energy output probability model, and a voltage weak node is accurately identified by using an impedance mode margin index; and generating a PV curve by adopting a continuous power flow method, superposing a static voltage safety constraint condition, and performing intersection operation on a unit output interval and a reserve capacity interval in a safe operation range to obtain an effective active power regulation space, thereby accurately quantifying the actual regulation capability on the premise of ensuring the voltage safety, and further realizing high-precision voltage regulation. And the safety and the economical efficiency of system operation are effectively improved.

The invention discloses a multi-inverter module off-grid parallel operation control method and a storage medium. According to the control method, a three-ring series control method comprising a power ring, a voltage ring and a current ring is adopted for each inverter module; power distribution is carried out among the multiple inverter modules according to an agreed droop curve; the power loop is used for controlling power output of the system; the power loop introduces virtual synchronous machine control and power correction according to an agreed droop curve to obtain voltage frequency and amplitude needing to be output; the voltage loop is used for maintaining the stability of system output voltage; the current loop is used for controlling output current; the voltage loop and the current loop are respectively controlled by positive and negative sequences. Real-time communication of the inverter modules is removed, configuration of the master and slave modules is removed, the inverter modules operate independently, the master and slave modules are not separated, and the problems of power coordinated distribution and the like caused by downtime of part of modules in a multi-inverter module parallel system are solved.

The application discloses a kind of unbalance correction circuit, unbalance correction system and drive chip, it is related to analog-digital converter correction field, the unbalance correction circuit disclosed includes, including: control module and correction module;The control module is connected with the analog-digital converter and the correction module respectively;The correction module is connected with the analog-digital converter;The correction module is used to carry out parameter correction to the analog-digital converter when circuit is powered on, and when the parameter correction is completed, correction completion signal is transmitted to the control module;The control module is used to compare the correction completion signal with preset completion signal, and when the correction completion signal is consistent with the preset completion signal, the power of the analog-digital converter is obtained;The control module is also used to carry out power correction to the analog-digital converter, so that the output power of the analog-digital converter reaches preset power range.

The invention provides a battery management system, a heat pump regulation and control method, equipment and a medium, and relates to the technical field of heat pumps. The pressure overshoot of the refrigerant in the working condition switching process is extracted from the response data, and then the dynamic stability index of the heat pump unit in the working condition switching process is determined based on the pressure overshoot and the temperature difference change rate of the refrigerant on the two sides of the evaporator; the tracking cost of battery temperature control of the heat pump unit in the working condition switching process is determined; the power regulation and control quantity of the compressor in the working condition switching process is obtained, correlation correction is conducted on the power regulation and control quantity according to the dynamic stability index and the tracking cost, and a power correction factor of the compressor is obtained; and the output power of the compressor in the working condition switching process is subjected to balanced regulation and control according to the power correction factor. By the adoption of the scheme, dynamic balance adjustment of the power of the heat pump in the working condition switching process can be achieved.

This application provides a method, electronic device, and storage medium for online power monitoring of photovoltaic modules. The method includes: constructing verification conditions; determining a valid test time based on pre-established verification conditions (string operating status verification, irradiance integer value verification, and irradiance stability verification); real-time power correction of the module based on the measured irradiance and cell temperature at the valid test time; determining the online power test value based on the corrected power value under the same integer irradiance reference value; when the integer irradiance reference value reaches a preset high irradiance threshold, correcting the online power test value to standard test conditions to obtain a comparable online power test value; determining the current control reference for the current test cycle based on its corresponding factory power correction value; and updating the dynamic iterative control reference based on the current control reference and historical control references to perform power anomaly monitoring. This application achieves accurate online testing and anomaly identification of photovoltaic module power.

The invention discloses an air conditioner control method, device and system and an air conditioner, and belongs to the field of air conditioner control. The air conditioner control method comprises the steps that when power is cut off and powered on again during operation, whether the air conditioner enters a power correction mode or not is determined based on the operation mode of the air conditioner, the outdoor environment temperature and the actual current; when a power correction mode is entered, limiting current is determined based on the current outage frequency and the effective current, and the limiting current is smaller than the effective current; and finally, the air conditioner is controlled to start and operate, and the actual current is controlled to be limiting current. According to the scheme, whether the air conditioner enters the power correction mode or not can be determined based on actual requirements when the air conditioner is powered off and powered on again during operation, and after the air conditioner enters the power correction mode, the actual current of the air conditioner is actively reduced so as to limit the operation power and reduce the probability of power tripping caused by short-time large-load operation; and the intelligent use satisfaction degree of a user on the air conditioner is improved, and the competitiveness of brand products is kept.

This invention proposes a fast frequency control method and device for wind-solar-storage power stations, belonging to the field of fast frequency and active power control technology for new energy power stations. The method includes: at the arrival of each sampling period, updating the active power target values ​​of wind turbines, photovoltaics, and energy storage based on whether the grid connection frequency of the wind-solar-storage power station is outside the upper and lower limits of the frequency warning and the active power regulation capabilities of wind, solar, and energy storage, reserving the maximum active power regulation capability of photovoltaics and energy storage; calculating the total active power regulation of the wind-solar-storage power station based on whether the grid connection frequency is outside the upper and lower limits of the frequency and the active power frequency droop curve function; updating the active power target values ​​of wind turbines, photovoltaics, and energy storage based on the active power regulation demand and the active power regulation capabilities of photovoltaics and energy storage; and performing active power correction for energy storage and photovoltaics when the fast frequency response time arrives. This invention can utilize the fast active power regulation capabilities of photovoltaics and energy storage to compensate for the capacity loss due to the inability of wind turbine active power regulation to be implemented on time, restoring the fast frequency response capability of the power station.

The invention discloses a self-adaptive power control method for a multi-working-condition resistance type heating device, and relates to the technical field of automatic control, and the method comprises the steps: 1, collecting a three-phase instantaneous voltage sampling value sequence and an instantaneous current sampling value sequence through a high-frequency synchronous sampling array, therefore, a dynamic impedance topological distortion model of the three-phase unbalanced load is constructed; 2, importing a load distortion guide vector and a total power demand radius into a vector orthogonal projection interception algorithm based on a virtual rotating coordinate system to realize generation of an active and reactive power separation control instruction; and step 3, generating a dynamically optimized asymmetric trigger phase sequence and implementing active modulation and reactive correction to enable the resistance-type heating device to realize adaptive power control under multiple working conditions. Accurate power output and current balance can be continuously kept in the load changing and working condition switching process, and the response speed, the energy efficiency level and the power grid side operation stability of the resistance type heating device are remarkably improved.

The invention discloses a power prediction method and device, electronic equipment and a storage medium, and belongs to the technical field of electric power, and the method comprises the steps: generating first feature information based on predicted irradiation data of a target region where a target power generation assembly group is located in a first time period in the future and the first time period in the future; using a power prediction model corresponding to a reference component of the target power generation component group to predict first power data of the reference component in a future first time period based on the first feature information; generating second feature information based on the future first time period, the component information of the first component and the reference component and the historical operation state features in the second time period; using a power correction model corresponding to the target power generation component group to predict a power correction coefficient corresponding to the first component in the future first time period based on the second feature information; second power data for the first component during a future first period is determined based on the first power data and the power correction factor. The method can significantly improve the precision of short-term power prediction of the power generation assembly.

The invention discloses a gear pair wind resistance power loss test method, platform and device, and relates to the technical field of power loss tests.Oil is injected to a gear pair through an oil injection lubrication control system, and a motor drives a driving wheel to drive a driven wheel to rotate; rotating the rotating speed knob at a preset rotating speed to increase the rotating speed, recording the torque value of the current input torque rotating speed sensor and the torque value of the current output torque rotating speed sensor every time the preset increment rotating speed is increased, and determining the driving wheel transmission power and the driven wheel transmission power on the basis; drawing a power-rotating speed curve graph based on the rotating speed of the motor and the difference value between the driving wheel transmission power and the driven wheel transmission power, and determining the parasitic power of the gear pair based on the curve graph; and correcting the parasitic power of the gear pair to obtain a corrected value of the parasitic power of the gear pair, subtracting the corrected value of the parasitic power of the gear pair from the obtained difference value to obtain a wind resistance power loss value of the gear pair, and rapidly and accurately testing the wind resistance power loss of the gear pair.

This application discloses a method and system for predicting wind turbine icing power based on sensitivity and hyperbolic residuals, belonging to the field of wind power generation technology. The method includes: collecting wind turbine datasets; calculating theoretical ice-free power based on blade element momentum theory; obtaining weighted equivalent ice thickness from the wind turbine dataset using a pre-calibrated sensitivity function, and constructing a power correction model based on the theoretical ice-free power to obtain the corrected power; fitting the residual between the observed power and the corrected power using a generalized hyperbolic distribution; constructing a state-space model and updating the parameters of the state-space model based on a particle filter algorithm incorporating physical consistency constraints; outputting the final power prediction value based on the determined parameters of the state-space model, and calculating the uncertainty confidence interval and icing risk probability index; improving the accurate characterization of asymmetric ice layers, making the confidence interval coverage of the state-space model more accurate when predicting extreme icing events, and enhancing robustness.

This application discloses a temperature control method and related apparatus. First, it acquires the current operating data of the crystal furnace. Then, based on the current operating data and a first prediction model, it determines the timing for shutting down the low-level heater. Furthermore, by predicting the timing for shutting down the bottom heater, it controls the bottom heater, resulting in better temperature control. Next, based on the current operating data, a second prediction model predicts the first time interval for the solution percentage in the crystal furnace to reach a second preset threshold. Then, based on the first time interval and the current operating data, the prediction model predicts the power correction amount for the main heater. Finally, based on the power correction amount, it controls the main heater to ensure consistent liquid temperature after temperature control. Therefore, it achieves better consistency in liquid temperature after temperature control, realizes standardized temperature control of the crystal furnace, and improves the accuracy of temperature control.

The invention relates to the technical field of electric energy quality, in particular to a system short-circuit capacity estimation method and system considering voltage fluctuation quantity and reactive correction. The method comprises the following steps: calculating a reactive power array of a power supply main incoming line of a concerned bus; identifying a reactive power abrupt change point corresponding to the maximum change of the adjacent extreme point in the monitored reactive power array, and obtaining the maximum reactive power value and the minimum reactive power value corresponding to the reactive power abrupt change point, and the fundamental wave voltage effective values of the concerned bus corresponding to the maximum reactive power value and the minimum reactive power value; correcting the maximum reactive power value and the minimum reactive power value corresponding to the reactive power abrupt change point to obtain a corrected reactive power value under the nominal voltage; calculating a voltage fluctuation quantity according to the fundamental wave voltage effective value of the concerned bus; and calculating the short-circuit capacity based on the voltage fluctuation quantity and the corrected reactive power value under the nominal voltage.