230 results about "Variable load" patented technology

The invention discloses a load-variable ultra-large-capacity dry-type transformer, and relates to the technical field of dry-type transformers, the load-variable ultra-large-capacity dry-type transformer comprises three groups of main iron core columns and three groups of auxiliary iron core columns, the section of each main iron core column is in a stepped shape, and three layers of amorphous alloy belts are laminated in each main iron core column; the thickness of the middle layer of the three layers of amorphous alloy belts is set to be 1.2-1.5 times that of the two side layers, and independent lap joint pieces are arranged at the joints of the lamination sets in the auxiliary iron core column. The stepped sections of the three groups of main iron core columns are combined with the magnet yokes with thin tops and thick bottoms, so that the magnetic flux density is uniformly distributed, the capacity of a single column is improved, the problems that the capacity of a single traditional dry-type transformer is limited and the whole transformer needs to be replaced during capacity expansion are solved, the occupied area is reduced through modular splicing, the capacity of a single group of iron core columns is increased, and the no-load loss is reduced.

The invention provides a variable load adjusting coal pulverizing system and method, electronic equipment and a storage medium. The system comprises a monitoring module, a coal mill and a control module. The monitoring module is connected with the coal mill and the control module and used for monitoring running state data of the coal mill and sending the running state data to the control module. The control module is respectively connected with the coal mill and the monitoring module, and the control module is used for performing data analysis on the load related data and the operation state data of the generator set, determining the operation condition of the generator set and generating a control instruction of the coal mill according to the operation condition; the coal mill is connected with the monitoring module and the control module and used for adjusting the internal circulation rate of the coal mill according to the control instruction. Compared with the prior art, the internal circulation rate of the coal mill can be accurately adjusted according to different load change conditions; and the condition of large parameter fluctuation in the running process of the coal mill can be avoided.

The invention relates to the technical field of control regulation, in particular to a supercritical unit variable load rate dynamic compensation control method, which comprises the following steps: acquiring unit operation data, performing credibility restoration, and outputting a credible parameter set; a time sequence mapping table is constructed based on the credible data, and boiler heat storage lag time, steam turbine control valve delay and a steam temperature interstage coupling coefficient are quantified; correcting the boiler water supply feedforward instruction by using the heat storage lag time to generate a compensated water supply instruction; according to the time sequence mapping table and the main steam pressure change rate, a multi-genetic algorithm is adopted to optimize a control valve constraint rule, and a dynamically constrained control valve action instruction is generated; an inter-stage coupling coefficient is called to generate a swing angle compensation amount, and water spraying temperature reduction disturbance is blocked; safety locking parameters are monitored to trigger buffering intervention in a grading mode, and compensation instructions are integrated to implement cooperative correction. The problem of out-of-step response of multiple execution units under the variable load working condition is solved, and the unit adjusting rate and the control stability are remarkably optimized.

The invention belongs to the technical field of welding workstations, and discloses a welding workstation robot welding path and positioner action collaborative optimization method, which comprises the following steps: constructing a weld importance-real-time working condition dynamic priority system through an analytic hierarchy process, and collecting thermal stress and deformation data in real time in combination with multiple sensors; the high-priority weld joint cooperation level with the heat deformation exceeding the threshold value is automatically adjusted up; meanwhile, establishing a'priority-equipment resource 'matching matrix to identify conflicts in advance; according to the design, working condition changes in the welding process can be dynamically adapted, the deformation problem caused by fixed priorities in a multi-welding-seam intersection area is avoided, manual interruption and adjustment are not needed, it is ensured that the robot and the positioner act collaboratively without resource preemption, it is ensured that the welding process is continuous and stable, and the welding quality consistency of multi-welding-seam workpieces is improved; a variable load coupling dynamic model is established based on a Lagrange equation, a load compensation item is embedded, and a coefficient is corrected online in real time.

The invention belongs to the technical field of power systems, and discloses a thermal power generating unit coordinated variable load control method and system based on unit energy storage, and the method comprises the steps: constructing an energy storage quantification model and a steam turbine energy conversion model according to an energy storage unit and a conversion unit, the total energy storage capacity of the thermal power generating unit thermodynamic system is calculated in combination with a weighted summation method; calculating an energy storage regulation factor of the thermal power generating unit based on the real-time energy storage state, the regulation sensitivity and the efficiency factor, and determining the regulation priority of the thermal power generating unit according to the energy storage regulation factor; and solving a load distribution scheme satisfying collaborative optimization of coal consumption, equipment loss and tracking precision by using a multi-objective optimization algorithm, and executing load distribution through a hierarchical control architecture. According to the method, the load adjusting capacity of the thermal power generating unit can be effectively improved, coal consumption increase and equipment loss caused by load fluctuation are reduced, meanwhile, the economical efficiency and safety of unit operation are improved, and powerful support is provided for stable operation of a modern power grid.

The invention relates to a method and device for evaluating the rapid load changing capacity of a coal-fired unit, and the method comprises the steps: firstly, building a coal-fired unit dynamic model which comprises a coal pulverizing system, a boiler and a steam turbine through historical operation data, and determining model parameters based on the operation characteristics of an actual unit; secondly, main steam pressure and power instructions of different load sections are set according to the sliding pressure curve, a variable load capacity test is carried out by adopting a method of increasing the load increasing rate, and meanwhile, the coal feeding amount, the boiler water feeding amount and the adjusting range and the changing rate of a main steam valve are restrained; finally, dynamic changes of key parameters such as main steam pressure and steam-water separator outlet temperature in the variable load process are analyzed, and the actual average load rising rate of the unit is evaluated. According to the invention, the variable load capability of the unit in different load intervals can be accurately evaluated. Therefore, the problems that in the prior art, the load changing capacity of a unit in different load intervals is difficult to accurately evaluate, and the stabilization of new energy power generation fluctuation and the stability of power grid frequency are greatly influenced are solved.

The invention discloses a thermal power generating unit main reheating steam temperature wide-load self-adaptive adjusting method and system, relates to the technical field of electric power industry automation and control, and aims at solving the problems that an existing adjusting method is large in steam temperature fluctuation, high in thermal stress and poor in main reheating collaboration under the wide-load working condition. The method comprises the steps of calculating main steam phase saturation and mapping a target value; calculating the maximum change rate based on the thermal physical parameters of the material, and generating a reference track with the limited change rate; the steam phase saturation of the main steam is used as a phase reference, and the reheated steam is controlled to respond according to a preset phase difference; a combustion system, a flue gas temperature adjusting baffle and a temperature reducing water system are cooperatively controlled; the system comprises a vapor phase saturation processing module, a dynamic boundary generation module, a phase coordination control module, an execution mechanism coordination module, a steady state detection module and a mode switching module. Accurate steam temperature adjustment under the wide load is achieved, material thermal stress is reduced, unit operation safety and economical efficiency are improved, and the variable-load operation requirement of the unit is met.

The invention relates to the technical field of coal-fired unit energy flow analysis and prediction, in particular to a coal-fired unit boiler energy flow analysis and prediction method under rapid variable load, which specifically comprises the following steps of: firstly, combining a thermodynamic physical framework with a recurrent neural network, and representing a function relationship between a time-varying parameter and a state variable in a mechanism model through a neural unit; rapid fluctuation of energy in the boiler is accurately captured; secondly, a multi-mode switching strategy based on an attention mechanism is introduced, flexible switching is carried out between a strong coupling state and a weak coupling state, and the prediction precision under high-speed load change is guaranteed; and finally, introducing an error compensation model, and dynamically correcting a hybrid model prediction residual error. According to the method, physical constraints of mechanism modeling, multi-mode switching of an attention mechanism and an error compensation model are integrated and fused, so that the problems that most of hybrid modeling studies in the prior art mainly focus on steady-state or finite transient prediction, and studies on energy flow dynamic characteristics under rapid load change are still relatively deficient are solved.

The invention discloses a hydraulic pump dynamic flow control method and system based on load feedback, and relates to the technical field related to hydraulic pumps, and the method comprises the steps that the load pressure of a hydraulic pump is monitored in real time, a first load pressure signal is generated, and a target flow parameter is set; a load pressure-flow mapping graph is constructed through dynamic mapping; dynamically responding to generate load compensation parameters to carry out load control on load pressure; and deviation calculation is carried out on the target flow parameter based on the second load pressure signal, a flow deviation signal is obtained to carry out dynamic flow control on the hydraulic pump, a flow displacement control result is fed back to carry out real-time correction on the load compensation parameter, and a flow closed-loop backtracking control channel is constructed. The technical problems that in the prior art, the flow control response of the hydraulic pump is lagged under the variable load working condition, the control precision is insufficient, and the energy efficiency is low are solved, and the technical effects that the dynamic response speed, the control precision, the stability and the energy efficiency of flow control of the hydraulic pump are improved are achieved.

Devices, systems, and methods accelerated, variable load finite element analysis for vehicle design can provide a graphical representation of a finite element mesh and enter the graphical representation as an input to a recurrent neural network (RNN). Such solutions can develop a time series mesh (TSM) as an output from the RNN. Design of a component of the vehicle can be adapted based on the output.

The invention discloses a closed steam Rankine cycle power system configuration optimization and variable load control method based on heat storage feed-forward, and the closed steam Rankine cycle power system configuration optimization comprises the steps: adding a water supply bypass valve and a water storage tank in a system; an inlet water temperature sensor and an outlet steam temperature sensor are arranged at an inlet and an outlet of a boiler respectively, a fuel flow meter is arranged at an outlet of a fuel regulating valve, a water flow meter is arranged at an outlet of a main water supply valve, a power sensor is arranged at a rotating shaft of a turbine, and the water supply flow regulating capacity and the dynamic stability capacity of the system are improved through system configuration optimization. A system variable load control strategy after configuration optimization is further provided, a water supply bypass valve is adopted to control the system operation load, a fuel regulating valve is adopted to control the boiler outlet steam temperature, and the deviation between the steady-state heat storage capacity and the real-time heat storage capacity of the boiler is used as a fuel regulating valve auxiliary control signal. The system effectively solves the problems of overshoot of the steam temperature of the boiler outlet and low variable load rate of the system, and improves the safety and the rapid variable load capacity.

The invention belongs to the technical field of vibration control and isolation, and discloses a stepless self-adaptive large-range load quasi-zero stiffness vibration isolation platform and a use method.The use method comprises the steps that the load and motion state is monitored in real time through a stepless variable load vibration isolation supporting leg binding force sensor and an acceleration sensor, and after being processed by a signal conditioning module, the load and motion state is output; the passive grading quasi-zero stiffness system and the electromagnetic constant force module are regulated and controlled by the semi-active controller, so that stepless self-adaptive adjustment of a large-range load is realized; the passive grading system provides stepped load bearing, the electromagnetic constant-force module realizes stepless adjustment in a hierarchy, and the passive grading system and the electromagnetic constant-force module are combined to cover a wide-area load demand; the linear bearing reduces friction, viscous damping consumes vibration energy, the quasi-zero stiffness vibration isolation characteristic can be effectively exerted, the vibration isolation effect is improved, the application range is widened, and the vibration isolation device is suitable for vibration isolation in various load scenes.

The invention discloses an energy storage system power adaptive compensation method and system oriented to a variable load scene, and relates to the technical field of power compensation. The method comprises the following steps: acquiring active power and reactive power information at a grid-connected point of an energy storage system as current operation data; calculating a power factor of the grid-connected point based on the current operation data; judging whether the power factor is lower than a preset threshold interval or not; when the power factor is lower than a preset threshold interval, activating a compensation module, determining a target reactive compensation amount according to the power factor, and setting an actual issuing compensation value in combination with the maximum reactive power of the energy storage system; and generating a compensation instruction according to the actually issued compensation value, sending the compensation instruction to the energy storage converter, and outputting corresponding reactive power by the energy storage converter for compensation. The technical problem of low utilization efficiency of compensation resources caused by difficulty in adaptive power compensation of an energy storage system according to an actual power factor in a variable load scene in the prior art is solved, and the technical effect of improving the reactive power compensation efficiency is achieved.

The invention relates to the technical field of engineering machinery control, and discloses a hydraulic control system under a variable load piling working condition, which comprises a multi-dimensional state acquisition module, a fluid parameter observation module, a signal reconstruction decoupling module, a virtual impedance mapping module and a fluid phase locking control module. The acquisition module acquires a basic physical state; the observation module solves the effective volume elastic modulus of the hydraulic oil based on a fluid continuity equation; the reconstruction module utilizes the modulus to correct signal lag, reconstructs external load force through an inverse dynamic model and decouples environmental acoustic impedance; the mapping module dynamically generates a target mechanical impedance parameter according to the environment impedance; and the control module calculates an ideal instruction based on the target parameter, corrects the gain by utilizing the fluid modulus and locks the rebound peak phase to adjust the action time sequence of the valve core. Control distortion caused by fluid parameter drift is solved, active flexible adaptation to variable load geology is achieved, energy hedging is avoided, and operation efficiency is improved.

The invention relates to the technical field of robot motion, in particular to a variable load working condition heavy-load mechanical arm kinematics parameter calibration method and system. The method comprises the steps that joint angle parameters and theoretical Standard D-H model parameters are determined; the theoretical position of the end effector in the ideal state is determined; the actual position is determined, and the position error of the end effector is determined; the deflection under the preset load condition is determined, and corrected D-H model parameters are obtained; determining a load effect based on the parameter structure characteristics; introducing the load effect as a correction item into a parameter updating formula of a preset LM algorithm, and designing an adaptive compensation coefficient to adjust the contribution degree of the load effect; and dynamically adjusting the adaptive compensation coefficient through a convergence index in an iteration process of the LM algorithm. According to the method, the calibration precision of the kinematics parameters of the mechanical arm can be improved under the variable load working condition.

The invention discloses a deep peak regulation control method and device, electronic equipment and a storage medium, and relates to the technical field of data processing.The dynamic coupling relation between boiler combustion delay and turbine regulation characteristics is considered, and time-varying coupling compensation parameters are generated through a coupling compensation model; cooperative control over parameters such as main steam pressure is achieved in combination with a multi-parameter combined control framework, the response speed is dynamically adjusted by adopting a variable load rate self-adaptive adjustment algorithm, accurate matching of dynamic characteristics of the turbine and the boiler and optimization of control logic are achieved, and therefore the control efficiency is improved. The technical problems that in the prior art, due to the fact that the dynamic coupling relation between a boiler and a steam turbine is not fully considered, main steam pressure fluctuation exceeds the standard, ammonia spraying amount control is not accurate during deep peak shaving, and then safe and stable operation and economic performance of a unit are affected can be solved. The technical effects of reducing main steam pressure fluctuation, accurately controlling the ammonia spraying amount, guaranteeing safe and stable operation of the unit, ensuring that the environmental protection index reaches the standard and improving the flexible operation performance and the economical efficiency of the thermal power unit are achieved.

The invention provides low-frequency fatigue tensile loading equipment in a marine environment, which comprises an environmental box system, the environmental box system comprises a test box, a circulating system and a temperature control system, a solution for simulating the marine environment is arranged in the test box, the circulating system is communicated with a solution area in the test box, and the temperature control system is used for controlling the temperature of the solution; the truss type loading equipment is arranged in the environment box system, the truss type loading equipment comprises an upper chord beam frame, a variable load structure is connected to the upper chord beam frame, lower chord clamping nodes are arranged on the lower portions of the two sides of the upper chord beam frame respectively, and a sample is clamped between the lower chord clamping nodes and located in a solution area in the test box. According to the invention, various acidic and alkaline marine environment working conditions can be simulated, and various corrosive solution environments can be simulated; environmental conditions such as dry-wet cycle and freeze-thaw cycle are simulated. The limitation that a traditional environment test box cannot apply variable loads is broken through. And a test condition closer to a service state is provided for a durability test.

The invention discloses a thermal power generating unit AGC performance online detection and optimization method. A programmable logic controller is arranged outside a distributed control system of each thermal power generating unit; the distributed control system transmits an AGC instruction target value, an AGC input signal, a unit variable load rate set value and a unit load of the thermal power unit to the programmable logic controller in real time; and the programmable logic controller calculates the real-time variable load rate of the unit, transmits the real-time variable load rate of the unit to the decentralized control system to correct the set value of the variable load rate of the unit, obtains key data points and AGC real-time performance indexes, and transmits the key data points and the AGC real-time performance indexes to the decentralized control system. According to the invention, the real-time variable load rate of the unit and the set variable load rate of the unit are calculated on line to obtain the variable load rate correction coefficient, the variable load rate of the unit can be corrected on line in real time, the adjustment performance of the unit is optimal, and power plant engineers can accurately master the AGC performance of a single unit.

The invention belongs to the technical field of hydraulic systems, and particularly relates to a balance valve effectiveness simulation verification method and system. The balance valve effectiveness simulation verification method is scientific and reasonable in design, and is realized through the following steps: constructing a hydraulic-mechanical coupling model containing a balance valve in AMESim, applying variable load force and periodic forcible entry force, performing real-time simulation in combination with Simulink, and comparing working conditions when the balance valve is installed and when the balance valve is not installed; and quantitatively analyzing the displacement tracking error, the pressure stabilization time and the oscillation amplitude. The system comprises a model building module, a load applying module, a joint simulation module and a result analysis module, and the stability of the balance valve in the hydraulic system can be verified efficiently at low cost. The method is suitable for engineering machinery such as forcible entry robots, and scientific basis is provided for design and optimization of the balance valve.

The application relates to a main shaft fault identification method for a wind driven generator under a variable load operation state, and the method comprises the following steps: acquiring and storing at least two equal-angle interval sampling vibration signals in orthogonal directions in the radial plane of the front and rear rolling bearings of the main shaft and corresponding rotating speed signals; judging whether the storage amount of the equal-angle interval sampling vibration signals reaches a preset storage amount, if the judgment is yes, performing order spectrum calculation on the equal-angle interval sampling vibration signals, and extracting a fault feature vector; judging whether to trigger main shaft fault diagnosis according to a real-time vibration effective value, if the judgment is yes, inputting the fault feature vector into a pre-constructed confidence rule base model, obtaining the confidence degree distribution of each fault state through confidence reasoning, and identifying the unbalance and misalignment faults of the main shaft of the wind driven generator according to the confidence degree distribution. Compared with the prior art, the application can accurately extract non-stationary fault features under the variable load operation state of the wind driven generator, and improves the accuracy and reliability of fault diagnosis.

The application provides a coupling system and a control method for improving the variable load rate of a secondary reheat unit integrated with a medium-temperature energy storage, wherein the medium-temperature energy storage system is connected with the high-pressure cylinder outlet through a high-pressure cylinder outlet steam extraction valve during the energy storage process, is connected with the deaerator outlet through a pressure relief valve, is connected with the feed water pump outlet through a deaerator outlet regulating valve during the energy release process, and is connected with the boiler feed water inlet through a pipeline, so as to form a secondary reheat unit integrated with the medium-temperature energy storage; and a load splitting method is provided, which splits the whole unit load instruction into a medium-temperature energy storage system load instruction and a secondary reheat unit boiler coordination system load instruction, and the medium-temperature energy storage system load instruction is realized through high-pressure cylinder exhaust valve opening degree control and deaerator outlet regulating valve opening degree control in the load decreasing and increasing processes; through the coupling system and the load splitting method, the time-space transfer of the unit energy in the variable load process is realized, the variable load rate of the secondary reheat unit is improved, and the flexibility of the unit is enhanced.

The invention relates to the technical field of fluid machinery control, in particular to a cross flow fan variable load energy-saving operation control method which comprises the steps that 1, operation parameters of a cross flow fan are collected in real time; 2, the real-time load coefficient of the cross flow fan is calculated based on the collected operation parameters, and the calculation process comprises the steps that the actual output power of the fan is calculated, the theoretical output power of the fan is calculated, the ratio of the actual output power to the theoretical output power serves as the power ratio, and the real-time load coefficient is obtained; 3, querying a speed-load mapping table according to the real-time load coefficient to determine the optimal running speed of the cross flow fan; 4, the running speed of the cross flow fan is adjusted to the optimal running speed; and 5, repeating the steps 1 to 4 to form closed-loop control. Through a real-time monitoring system formed by various sensors, synchronous acquisition of multiple parameters such as current, airflow pressure, airflow temperature and environment temperature is realized.

A reverse rapid coordinated control method based on the DCS system of a coal-fired generator set maintains the control logic structure of the DCS system, dynamically revising the control parameters and setpoints of the regulated objects to implement reverse regulation control logic. The setpoints for the main steam pressure on the turbine side and the boiler side are dynamically calculated based on the real-time main steam pressure deviation. The turbine and boiler side load commands are issued based on the nonlinear function output by the variable load ratios of the turbine and boiler sides. The setpoints for the primary air pressure and mill cylinder pressure are based on the nonlinear function output by the variable load command on the boiler side. The PID control parameters of the turbine and boiler main controls are functions related to the main steam pressure deviation, and the magnitude of the PID control parameters for the turbine and boiler main controls are opposite to each other. This system improves the K value of the unit, requires minimal investment, requires less maintenance, and has rapid returns.

The application provides a four-wheel vertical load dynamic estimation system and simulation method of a variable load working condition commercial vehicle, relates to the field of vehicle motion characteristic simulation, and is composed of a nonlinear three-degree-of-freedom vehicle body model, a tire model, a four-wheel side slip angle / slip rate calculation model, a four-wheel vertical load solving model and a mass center position and spring mass estimation model. The mass center position and spring mass estimation model can be combined with the vehicle static axle load to estimate the mass center and mass related information, and correct the parameters in the vehicle body model and the vertical load solving model. The four-wheel vertical load and load transfer rate of the commercial vehicle can be obtained under the premise that the wheels are not additionally modified.

The application provides a large-scale algal cultivation rope constant tension control device and method under variable load, comprising a bottom plate, wherein the bottom plate is provided with a first rope pulling machine for maintaining the tension of the cultivation rope during the large-scale algal harvesting process, a second rope pulling machine for simulating the load force borne by the first rope pulling machine when the cultivation rope is dragged during the large-scale algal harvesting process, and a rope unwinding machine located between the first rope pulling machine and the second rope pulling machine and used for winding the cultivation rope, and the drive motors in the first rope pulling machine and the second rope pulling machine are connected with a PLC controller; the application has the beneficial effects that: a land-based constant tension test bench system is designed, the tension of the cultivation rope with large-scale algae is kept relatively stable under the variable load state, or the dragging is automatically paused when the dragging is stuck, the sudden disappearance of the force borne by the cultivation rope is avoided, the cultivation rope is prevented from being cut off by the knife due to the vertical oscillation or being pulled off due to the excessive force, a reference basis is provided for the actual application at sea, and the safety of the large-scale algal cultivation rope during the dragging process is ensured.

The present invention relates to a movable platform with a variable load-bearing area, comprising: a movable platform; an adjustment module, the adjustment module being mounted on the movable platform; at least two carrier sections mounted on the adjustment module; the carrier sections being combined to form part or all of the load-bearing platform; wherein the adjustment module is capable of adjusting the spacing between the carrier sections to adjust the load-bearing area of the load-bearing platform. The technical solution of the present invention is to adjust the spacing between the carrier sections via the adjustment module to adjust the size of the load-bearing platform, thereby changing the load-bearing area of the combined carrier sections. The load-bearing surface can be adjusted according to the size of the material, and can accommodate cargo pallets of multiple sizes, thereby improving applicability and increasing work efficiency.

The invention discloses a system and a method for measuring the electrostrictive strain of a ferroelectric material under variable temperature and variable load conditions. The system comprises a thermal field generation unit, a test signal generation unit, a strain measurement unit and an equipment control and data analysis unit. The method comprises the following steps: setting a temperature through a thermal field generation unit and changing the temperature according to a test requirement; adjustable voltage excitation is generated through the test signal generation unit; the strain measurement unit is used for measuring the output micro mechanical displacement of the to-be-measured sample generated by the electrostrictive strain effect under the real force load condition; and the equipment control and data analysis unit is used for generating an electrostrictive strain loop and a real-time strain curve. The device is suitable for ferroelectric samples in various forms, high-stability and high-sensitivity electrostrictive strain testing can be achieved in complex thermal field and force field environments, and a stable electrostrictive strain loop and a real-time strain curve can be generated.

The invention relates to a method for operating a process plant (200), the process plant comprising one or multiple plant components (212) operated by providing electrical power received from a grid or isolated network in order to perform one or multiple processes (202), wherein the process plant (200) is configured to operate at a load up to a given maximum plant load, the method comprising: Controlling the one or at least one of the multiple processes (202) by providing electrical power to the respective plant component ( 212) based on variable load operating information (272), within a variable load control mode (270), and based on base load operating information (262), within a base load control mode (260), wherein, within the base load control mode, the process plant is operated at a load only up to a maximum base load, wherein the given maximum base load is less than the maximum plant load; wherein the variable load control mode (270) further comprises: Providing load availability information (272) about a currently used load at which the process plant is operating and / or about a currently available load which the process plant can in addition be operated at, preferably to a grid service provider (290); if additional load is demanded to be assigned to the process plant, Receiving load demand information (276) in response to providing the load availability information; and Adapting the variable load operating information (272) based on the load demand information (276).

The invention discloses an industrial steam extraction combined heat and power generation frequency modulation system and an industrial steam extraction combined heat and power generation frequency modulation method adapting to a variable load condition, and relates to the technical field of combined heat and power generation. The problems that the heat storage capacity is limited and the frequency modulation capacity is low due to the fact that only reheating hot section steam is utilized at the present stage are abandoned, and in the sliding temperature operation mode, due to the fact that the temperature of main steam and the temperature of reheating steam can be changed by unit variable loads, the change trend of the steam extraction amount is completely opposite to the steam extraction temperature in the frequency modulation process, and the heat storage capacity is limited. Therefore, the outlet temperature of the heated molten salt is controlled by changing the sensible heat exchange amount of the main steam superheating heat exchanger and the reheating hot section steam superheating heat exchanger, and through the control strategy that the temperature is dynamically adjusted to be stable through the flow branches and the molten salt flow distribution of the main steam superheating heat exchanger and the reheating hot section steam superheating heat exchanger, the heat exchange efficiency of the molten salt is improved. The stability of the temperature of the heat storage medium in the heat storage process is greatly improved, and finally efficient operation of the system is achieved.

The invention discloses a main steam temperature prediction control method, device, equipment and medium based on a fusion model, and the method comprises the steps: building a fusion prediction model based on a superheater dynamic heat transfer theory; updating the fusion prediction model based on historical operation data of the coal-fired unit; determining a predicted main steam temperature of the coal-fired unit based on the fusion prediction model, and constructing an optimization objective function according to the predicted main steam temperature; solving the optimization objective function according to a preset constraint condition to obtain an optimization objective; and determining the working mode of the coal-fired unit based on the function value of the optimization target, wherein the working mode comprises a stable mode, a variable load mode and a limit mode. The invention belongs to the field of coal-fired unit control. The intelligent degree of coal-fired unit control can be improved.