59 results about "Load rejection" patented technology

The invention provides an overvoltage transient suppression method and system for an automobile generator rectifier and a medium, and relates to the technical field of rectifiers, and the method comprises the steps: carrying out the dynamic continuous data collection of an automobile generator through a transient data collection device, and obtaining an output voltage waveform; a load rejection identification mechanism is introduced to identify and analyze the output voltage waveform, and a real-time load rejection event is obtained; triggering an active protection circuit based on the real-time load throwing event, and generating a real-time protection control decision; and performing transient suppression on the rectifier according to the real-time protection control decision. The technical problems that in the prior art, overvoltage protection of an automobile generator rectifier is slow in response speed and low in protection precision, and the overvoltage transient state cannot be effectively restrained are solved. The technical effects of accurately identifying and responding to the overvoltage event and improving the timeliness and effectiveness of overvoltage transient suppression of the automobile generator rectifier are achieved.

The invention belongs to the technical field of thermal generator set automatic control, and particularly discloses a BEST double-machine regenerative thermal power plant converter load shedding automatic control method which comprises the steps that the shaft power of a steam feed pump and the shaft power of a small generator are determined; according to the sum, the pre-action opening degree of a BEST feed pump turbine steam inlet adjusting valve after the converter is subjected to load shedding is determined; predicting the rising rotating speed of the BEST steam feed pump set according to the rotating speed of the BEST steam feed pump set; and a steam feed pump minimum flow recirculation valve control method and a BEST feed pump turbine backpressure control method are started, and a rotating speed control method of the BEST feed pump turbine is determined according to the control method. According to the method, the rotating speed fluctuation process of the BEST steam feed pump set is shortened, the fluctuation amplitude of the boiler inlet feed water flow is reduced, and the stability and safety of the whole set after load shedding of the converter are guaranteed.

The invention relates to an engine load throwing high-voltage surge suppression circuit. The engine load throwing high-voltage surge suppression circuit comprises a detection module, a control module and a discharge module. The detection module responds to a first detection voltage and transmits the first detection voltage to the input end of the control module, and the first detection voltage is a voltage greater than a preset threshold voltage; the input end of the control module responds to the first detection voltage, and the output end of the control module outputs a first signal; the first input end of the discharge module responds to the first signal and is conducted, so that the second end of the discharge module is connected with the positive electrode of the battery, the third end of the discharge module is connected with the negative electrode of the battery, a parallel loop of the discharge module and the battery is formed, the discharge module serves as a load of an external circuit for discharging of the external circuit, the load throwing condition can be eliminated, and the service life of the battery is prolonged. The breakdown of circuit components caused by high-voltage surge generated by sudden current change of an external circuit of the engine is effectively inhibited, and a battery management system is protected.

The invention discloses an optimal control method for load shedding water hammer pressure of a pumped storage power station containing a fixed-variable speed unit. The method comprises the following steps: firstly, based on a pump turbine full-characteristic curve, performing variable-speed unit efficiency optimization, and determining the highest efficiency of a variable-speed unit and the corresponding optimal rotating speed; then, establishing a transition process mathematical model of the water delivery and power generation system of the pumped storage power station containing the constant-variable speed unit, and calculating Pareto leading edges taking the maximum pressure of a volute and the minimum pressure of a draft tube as optimization targets under different control schemes by adopting different guide vane closing rules for the constant speed unit and the variable speed unit; and finally, carrying out normalization processing on the maximum pressure of the volute and the minimum pressure of the draft tube, establishing a transient characteristic multi-target evaluation function, and screening out an optimal control scheme from the Pareto frontier. By means of the method, the water hammer pressure extreme value caused by hydraulic interference between the constant-speed unit and the variable-speed unit can be effectively improved, the operation stability and safety of a power station are improved, and good engineering adaptability is achieved.

The utility model discloses a load pre-lifting water turbine governor power-losing shutdown control device which comprises a water flowing pipe, the water flowing pipe is installed and connected to the position, close to the lower portion of an impeller and a governor gate, of a water turbine, a buffering water wheel box is arranged on one side of the water flowing pipe, and a load impeller is rotationally connected to the interior of the buffering water wheel box. According to the power-losing shutdown control device for the load pre-lifting water turbine governor, a load impeller connected to the bottom end of a governor brake pad is connected through a mechanical shaft rod to rotate, and when liquid filled into the governor brake pad is received, a shaft plate is driven to rotate along with rotation of the load impeller to close a pipeline; the electric drive gate is opened through electric drive to receive drained water, so that the load impeller drives the shaft plate to provide the lifting amount for closing in advance before power loss, the load shedding pressure of the unit caused by the water flow amount and the flow speed in the water turbine impeller space is reduced, the abnormal conditions such as rotating speed fluctuation and overspeed are reduced, and the risk of equipment damage is reduced.

The invention provides a speed regulator auxiliary decision-making method and system based on a digital mapping model of a power plant speed regulator. The method comprises the following steps: determining whether to start judgment of first load shedding or not based on load values at a plurality of time points; if the judgment of the first load shedding is started, extracting a judgment time period of the first load shedding, comparing the judgment time period with a preset scheduling time period, and judging whether the judgment of the second load shedding is started or not; if the second load shedding judgment is started, determining the fluctuation trend of the power grid frequency or the power generator rotating speed in a judgment time period based on the historical data of the power grid frequency or the power generator rotating speed, and comparing the fluctuation trend of the power grid frequency or the power generator rotating speed with the load change trend in the judgment time period based on a preset digital mapping model, judging whether a load shedding condition occurs or not; and the load shedding condition is fed back to a control end, so that the control end adjusts control parameters of the speed regulator based on the load shedding condition.

The invention discloses an impulse turbine capable of generating power bidirectionally, and relates to the technical field of water turbine.The impulse turbine comprises a water turbine main shaft, a rotating wheel disc and an annular water conveying pipe, the water turbine main shaft is fixedly inserted into the rotating wheel disc, and a plurality of connecting rods are arranged on the outer wall of the rotating wheel disc along the circumference; one end of the connecting rod is inserted into the rotating wheel disc and is fixedly provided with a gear, and the other end of the connecting rod is fixedly provided with a steerable water bucket. When the water turbine needs to be braked or steered, the steering system can be put into use, other equipment does not need to be disassembled or added, and therefore the device is more convenient to use; when the water turbine is shut down or load shedding occurs due to accidents, the steerable water bucket and the steerable nozzle are controlled by hydraulic control equipment to conduct steering operation, and meanwhile, a water inlet valve on the water spraying pipe is opened, so that water flow reversely impacts the steerable water bucket through the steerable nozzle, and then braking torque opposite to the original rotating direction is provided; therefore, rapid braking of the impulse turbine is achieved.

The invention provides a load rejection device and passive floating equipment, and belongs to the technical field of underwater equipment. The load rejection device comprises a platform body, an extending frame, a first lever, a metal pull rod, a positive electrode power connection end and a negative electrode power connection end. The extension frame is arranged on the lower side of the platform body; the first lever is installed on the platform body and comprises a first bearing end and a pull rod connecting end. The first end of the metal pull rod is connected with the pull rod connecting end; the anode power connection end is directly and conductively connected with the metal pull rod, and the cathode power connection end is insulated and isolated from the metal pull rod. When load rejection counterweight is needed, the positive electrode power connection end is connected with a power supply positive electrode, the negative electrode power connection end is connected with a power supply negative electrode, and the metal pull rod serves as a sacrificial anode in a water environment to be electrochemically corroded and gradually dissolved and thinned. When the metal pull rod is corroded and cannot bear the pulling force of the first lever, the metal pull rod is broken. The first bearing end of the first lever rotates relative to the platform body under the gravity action of the balance weight, and load rejection and release of the balance weight are achieved.

The invention discloses a load rejection type buoyancy-adjusted underwater reciprocating observation platform, which belongs to the technical field of underwater survey, and comprises a shell, which is provided with a floating block cabin positioned at the upper part and a heavy block cabin positioned at the lower part; a plurality of floating blocks capable of throwing loads are arranged in the floating block cabin; a plurality of heavy blocks capable of throwing loads are arranged in the heavy block cabin; the load rejection device is provided with a driving device, a linkage structure capable of moving up and down under the driving of the driving device, a floating block load rejection structure for rejecting a floating block and a heavy block load rejection structure for rejecting a heavy block; and the linkage structure is connected between the floating block load rejection structure and the heavy block load rejection structure and drives the floating block load rejection structure and the heavy block load rejection structure to act, so that the heavy block and the floating block are alternately thrown out. Floating and sinking of the equipment are achieved through load rejection of the floating block and the heavy block, the oil consumption bottleneck is broken through, and light weight and long endurance are achieved. And the floating block and the heavy block are directly separated from the equipment after load rejection, extra load cannot be caused, and the size and the weight of the equipment can be accurately controlled.

The present invention provides an overspeed protection system for a gas turbine generator set, ensuring the stable and safe operation of the gas turbine under different working conditions. It consists of a pneumatic controller, a solenoid valve, an accumulator, a pressure sensor, a bleed valve, a check valve, and a cooling and purification component, etc. During the starting process of the gas turbine, it provides compressed air for the gas turbine to open the anti-surge bleed valve and atomize fuel. After the gas turbine shuts down, it provides compressed air for the gas turbine to remove the residual fuel in the machine. When the gas turbine needs to shed load, it quickly opens all the bleed valves of the gas turbine. To improve the reliability and economy of the system, an accumulator is set in the gas turbine unit to store the high-pressure air after the compressor for controlling the load-shedding bleed valve. The present invention improves the safety and reliability of the operation of the gas turbine generator set and reduces the probability of accidents.

The present invention relates to a system and method for measuring the moment of inertia of a steam turbine shaft system. The system comprises a rotating shaft, a gear plate, a magnetoresistive sensor, an oscilloscope, and a computer. The system calculates the shaft system's rotational speed change based on the alternating signal transmitted by the magnetoresistive sensor during turbine load rejection, thereby calculating the shaft system's acceleration and further calculating the turbine shaft system's moment of inertia. The present invention has the following beneficial effects: The system uses a high-precision, high-frequency oscilloscope to collect instantaneous signals from the gear plate teeth passing through the magnetoresistive sensor, thereby improving the resolution of the speed signal acquisition. By rationally dividing the speed clusters, it overcomes signal voltage fluctuations during speed measurement and enables batch signal processing. The system offers advantages such as simple operation, high data accuracy, and clear physical concepts.

The embodiment of the invention provides a gas turbine self-adaptive PID control method for a load shedding working condition, and relates to the technical field of gas turbine control, and the method comprises the following steps: determining a gain optimization variable based on a gas turbine model, constructing an optimization objective function, and determining an input parameter; iterating the gain optimization variable through an intelligent optimization algorithm, constructing an initialized litsea rotundifolia of the intelligent optimization algorithm through a chaotic mapping method based on the search space, the litsea rotundifolia scale and the optimization dimension, calculating an optimal solution of the gain optimization variable based on the initialized litsea rotundifolia, and if the number of iterations reaches the maximum number of iterations, ending the iteration and outputting the optimal solution. If the maximum number of iterations is not reached, continuing iteration until the maximum number of iterations is reached; and taking the optimal solution of the gain optimization variable as a parameter of a cascade PID controller, and controlling the gas turbine in the load shedding working condition. According to the scheme, under the load shedding working condition, the gas turbine can rapidly adjust parameters, and stable output is kept.

The invention relates to a novel method for carrying out a continuous load rejection test in cooperation with a linear motor, belongs to the technical field of load rejection devices, and solves the problems that a load rejection device in the prior art is low in filling speed and inconvenient to use. The method comprises the following steps: step 1, mounting a plurality of load memories on a mounting mechanism; 2, according to the load casting requirement, the load casting angle is adjusted, and the step 3 or the step 4 is executed; step 3, connecting an alternate casting controller with a connector, and starting a catapult to continuously cast a single load; and 4, disconnecting the alternate casting controller from the connector, and starting the catapult to continuously cast a plurality of loads at the same time. The multiple loads are mounted at a time through the load storage device, the multiple loads are sequentially and automatically loaded into the casting device through the load storage device, rapid load loading is achieved, the structure is simple, and use is convenient.

The invention relates to the technical field of nuclear power control, in particular to a response method for tripping of a single main feed pump under the full-power working condition of a nuclear power unit. The method comprises the steps that during power operation, operation parameters and states of subsystems and equipment of a power plant are continuously monitored, and when it is monitored that a reactor operates at high power and a single main water feeding pump of a main water feeding system trips, a steam turbine load shedding signal is triggered, and meanwhile a rod falling signal is generated; hard wiring is added between the control rod cabinet and the rod controller, and after a rod falling signal is received, pin claw coils of the corresponding pre-selected control rod group are all de-energized, so that the pre-selected control rod group quickly falls into the reactor bottom under the action of gravity, and the reactor power is reduced to PL. According to the method, the power of the steam turbine is rapidly reduced, and the predetermined control rod group is rapidly inserted into the reactor core, so that the nuclear power is rapidly reduced, the power balance of the first loop and the second loop is maintained, the SG liquid level is not too low, and shutdown is avoided.

The invention discloses a waveform acquisition method and system for suppressing oscillation of a governor model after load shedding, and relates to the technical field of hydraulic turbine sets, a plurality of machine-end circuit breaker opening and closing signals and unit target parameters are acquired, and the machine-end circuit breaker opening and closing signals and the unit target parameters are input into a preset governor suppression model, the suppression speed regulator model comprises an optimization control module, an execution mechanism module and a prime mover module, the optimization control module is adopted to carry out opening optimization control on unit target parameters to obtain an opening target value, the execution mechanism module is adopted to carry out guide vane optimization control on the opening target value to obtain a guide vane opening instruction, and the guide vane opening instruction is sent to the prime mover module; and inputting the opening and closing signal of each machine end circuit breaker and the guide vane opening degree instruction into a prime motor module to carry out a load shedding test to obtain a load shedding waveform curve. The technical problem that an accurate load shedding curve cannot be obtained due to the fact that a simplified debugger model is used for carrying out a hydroelectric generating set load shedding simulation test in the prior art and the problem of generating set vibration easily occurs is solved.

A water diversion surge shaft is arranged above the high-pressure vertical shaft, and a vertical hole is formed between the water diversion surge shaft and an upper bent section of the upstream of the high-pressure vertical shaft in a communicating mode so as to form the overhaul channel, directly communicated with the high-pressure vertical shaft, in a well chamber of the water diversion surge shaft. A maintenance guide hole communicated with the interior of the water diversion surge shaft is formed in the top end of the water diversion surge shaft, and a detachable cover plate is installed on the maintenance guide hole. The maintenance channel is built in advance between the water diversion surge shaft and the high-pressure shaft at the same position, so that when the high-pressure shaft is maintained in the later period, a maintainer can hoist the maintenance channel to directly reach the high-pressure shaft from top to bottom to the interior of the high-pressure shaft, and the maintenance channel of the high-pressure shaft can maintain the high-pressure shaft while normal operation of a power station is not affected. The influence on the water level during load shedding and load increasing of the power station is avoided; and when the high-pressure vertical shaft is overhauled and maintained, the working efficiency can be improved.

The invention aims to provide a gas turbine generator set load abrupt change test method, and belongs to the field of gas turbine tests. Covering a starter unit and executing load shedding operation according to a preset scheme after the starter unit stably runs, and closely observing the state of the unit at the same time; after the test, data processing and analysis are carried out, and the performance of the unit is evaluated, so that the dynamic response characteristic, the safety, the stability and other related performances of the unit after load shedding are judged. According to the invention, the externally connected load box is used as the load of the gas turbine generator set, so that the performance of the output power, voltage, current, frequency and other performance parameters of the generator under different load conditions can be accurately tested.

The present application relates to the technical field of water conservancy and hydropower engineering, and particularly relates to a control method for accelerating surge attenuation of a surge chamber of a pumped storage power station. Two units are first unloaded, and at a first opening time T1, one unit is opened from no-load opening to guide vane pause relative opening τ Z . Most of the surge chamber water level fluctuation is offset by opening a large opening degree for first-stage regulation, and the remaining water level fluctuation is reserved for subsequent guide vane action to offset; subsequently, the guide vane maintains a constant relative opening τ Z , and at a second opening time T2, the guide vane is opened from τ Z to full opening. The remaining surge chamber water level fluctuation is offset by opening a small opening degree for second-stage regulation, and through stepwise differential regulation, rapid attenuation of the water level fluctuation is achieved. A solution method for the first opening time T1 and the second opening time T2, and the guide vane pause relative opening τ Z is given. The present application accelerates the attenuation of the surge of the surge chamber, reduces the grid-connection waiting time after the unit is unloaded, improves the flexibility of the unit operation, and increases the power generation benefit of the hydropower station.

The embodiment of the application provides a kind of regulating rod control method and device, electronic equipment, nuclear power plant system and medium, belong to nuclear power plant safety technical field.The method comprises: in response to the working condition information of nuclear power plant system is load rejection condition, the target power of reactor is acquired;According to target power and initial correction factor, determine the secondary loop load demand signal;According to the first initial position of power regulating rod and secondary loop load demand signal, control power regulating rod moves;According to the second initial position of temperature regulating rod, adjust initial correction factor to obtain target correction factor;According to target correction factor, target power, the measured temperature of primary loop subsystem and the measured power of reactor, control temperature regulating rod moves to intermediate position;According to intermediate position and preset safety position, desalted water is injected into primary loop subsystem until temperature regulating rod reaches safety position.The embodiment of the application quickly improves the safety of nuclear power plant under load rejection condition.

The invention discloses a pressure-resistant mobile platform device capable of realizing sea-air cross-domain. The device comprises a pressure-resistant cabin, a main body frame, a power system, a buoyancy system, a load rejection system and a control acquisition system, the main body frame is of a hollow rectangular frame structure, the pressure-resistant cabin is fixedly connected to the middle of the main body frame, the buoyancy system is installed on the periphery of the pressure-resistant cabin, the power system is fixedly connected to the top of the main body frame, and the load rejection system is located on the lower portion of the main body frame and installed on the lower surface of the pressure-resistant cabin. The control acquisition system is fixedly installed on the pressure-resistant cabin body, and the power system and the buoyancy system are both controlled by the control acquisition system. The device can run and span in various media in deep sea, shallow sea, sea surface and air, and can effectively prevent the subsidence phenomenon.

The invention discloses a blade shimmy bending moment limit load reduction method based on an impeller azimuth angle, which comprises the following steps: S1.1, acquiring the azimuth angle of a blade on an impeller rotating plane; s1.2, judging whether the fan is in a converter load shedding working condition or not; s1.3, judging whether the azimuth angle of a blade in advance of nine o'clock from the clockwise direction is smaller than a set azimuth angle or not at the load shedding moment, if so, performing synchronous control on the three blades by taking the maximum blade angle as a reference, and if not, entering the next step; s1.4, paddle opening or paddle closing control is conducted on the blades, and paddle opening is stopped after the paddle opening amplitude of the blades reaches a set threshold value; s1.5, after the blades reach nine o'clock, the blades are collected at a third set speed; and S1.6, judging whether the three blades respectively finish one paddle opening action or not, if so, performing synchronous control on the three blades of the fan by taking the maximum paddle angle as a reference, and if not, returning to the step S1.4. On the premise that the operation power of the wind driven generator does not need to be reduced, the shimmy bending moment limit load of each section of the blade can be effectively reduced.

The utility model discloses a load rejection device, which comprises a support body, a load rejection device, a load rejection device, a load rejection device and a load rejection device, and is characterized in that a guide part and a clamping part are formed in the support body; the driving device is fixed on the bracket body and comprises a release element which is used for being detachably connected with the main laying component and is provided with a locking position and an unlocking position; the driving element drives the releasing element to act so as to release the main laying part and enable the releasing element to be switched between a locking position and an unlocking position; the transmission part is movably arranged in the guide part and is in contact fit with the release element; the locking part is rotatably connected to the support body, one end of the locking part is arranged in the clamping part, and the other end of the locking part is in contact fit with the transmission part. When the load rejection device is used, continuous power supply is not needed, and energy consumption is low.

The application relates to a mixed-flow pump-turbine runner and a runner S characteristic optimization method, and belongs to the technical field of hydraulic machinery.The application aims to solve the problems that the diameter of the high-pressure side of a pump-turbine runner of a high-head and large-capacity pumping and storing unit needs to be set larger, the runner inlet height needs to be lower, the S characteristic is more prominent, the frequency of starting and stopping and load shedding of pumping and storing units for intermittent energy such as wind and light is increased, and the risk of operation of the pumping and storing unit in the S area is increased, and the application comprises an upper crown, a lower ring and multiple blades; the upper crown is arranged above the lower ring, multiple blades are arranged in a passage between the upper crown and the lower ring, the multiple blades are arranged in a radial direction, and the high-pressure side of each blade is processed with a concave-convex knot airfoil type. The application further relates to a mixed-flow pump-turbine runner S characteristic optimization method, which comprises the following steps: step one, modeling through three-dimensional modeling software; and step two, forming a spatial curve by intersecting a circular pipe with blades in a blade middle surface. The application belongs to the technical field of runner design of a hydraulic turbine.

The invention provides a load rejection device based on a memory alloy spring and an underwater robot, the load rejection device comprises a load rejection bracket assembly, a load rejection mechanism and a change-over valve assembly, the load rejection mechanism comprises a driving sub-mechanism and a pin shaft connecting sub-mechanism, the pin shaft connecting sub-mechanism is arranged on the load rejection bracket assembly, and the driving sub-mechanism is arranged on the pin shaft connecting sub-mechanism; the driving sub-mechanism is used for pushing the pin shaft connecting sub-mechanism to move in the axial direction so that the load rejection mechanism can be separated from the load rejection bracket assembly. The change-over valve assembly is arranged on a driving sub-mechanism of the load rejection mechanism. When the underwater glider master control system judges that load rejection is needed, the change-over valve assembly is powered on, the driving sub-mechanism is heated, the driving sub-mechanism pushes the pin shaft connecting sub-mechanism to move in the axial direction, so that the load rejection mechanism is separated from the load rejection bracket assembly, load release is completed, and at the moment, the underwater glider floats upwards due to the fact that buoyancy is larger than gravity; the load rejection device is simple in structure, high in reliability and low in manufacturing cost; and meanwhile, the device has the advantages of small size and small occupied space.

Embodiments of the present disclosure relate to an uninterruptible power supply. The uninterruptible power supply comprises a switch, a power management module, an inverter and a controller. The switch is arranged between a load and a power source, the power source configured to supply power to the load. The power management module comprises a main energy storage and configured to reduce a ripple experienced by the main energy storage. The inverter is arranged between and coupled to the power management module and the load. The controller is coupled to the power management module, the inverter and the switch, the controller configured to control the inverter to regulate output voltage magnitude and frequency by regulating the power exchange between the inverter and the power source. According to embodiments of the present disclosure, the overcharging of the energy storage during sudden load rejections or utility phase jumps can be avoided.

The invention provides a pump turbine characteristic curve comparison method based on a runaway line elevation angle, which comprises the following steps of: extracting a characteristic curve runaway line and an equal opening line near a rated operating point, and constructing the runaway line elevation angle according to an intersection point of the characteristic curve runaway line and the equal opening line, a projection of the intersection point on an abscissa axis and a coordinate origin; and a calculation formula of a runaway line elevation angle is given through an anti-trigonometric function. And when the elevation angle of the runaway line is larger, the parameters of the transition process during the load shedding operation of the unit under the corresponding curve are better. According to the method, the influence of different characteristic curves on the parameters of the transition process can be quickly compared, a large amount of numerical calculation is avoided, and convenience is provided for characteristic curve selection in an actual project.

The utility model discloses a simple underwater load rejection floating device which comprises a sealing floating body and a carrying body, the bottom of the sealing floating body is provided with a connecting hole, and the carrying body is provided with an inserting column matched with the connecting hole. A motor is arranged in the sealing floating body, a motor shaft of the motor is connected with a releasing rod, rotating clamping structures matched with each other are arranged between the releasing rod and the inserting column, and the motor can drive the releasing rod to rotate to be clamped with or separated from the inserting column. The sealing floating body is provided with a sealing structure corresponding to the matching position of the releasing rod and the inserting column. The fixing and releasing between the carrying body and the sealing floating body are realized through a simpler structure, the reliability is better, the processing and assembling difficulty is low, the implementation cost is low, and the universality is better.

The utility model relates to a loadable multi-probe ejection device which is suitable for ocean exploration. The existing in-situ test probe injection operation depends on large-scale equipment, and the operation time is long. The device is carried on a ship through an ejection operation module and comprises a battery module, a data storage module and a plurality of ammunition modules. The launching module, the ammunition module and the high-speed probe realize ejection and data acquisition through a specific structure and connection. During launching, the electric cylinder is driven, the clamping jaw and the spring are matched to realize high-speed probe launching, and load rejection and automatic filling can be realized after launching. The ammunition module is in an ammunition drum shape and can be pushed out and filled through a rotary spring or a motor. The device has the advantages of convenience in operation, high speed, high universality, excellent data acquisition and transmission, efficient and reliable automatic filling and the like.

The invention provides a control valve optimization control method and a control valve optimization control system for a steam turbine. The control valve optimization control method comprises the following steps: acquiring target opening degrees of control valves output by a DEH control system in a current period and actual opening degrees of the control valves in a previous period; the preset experience opening degree, the target opening degree of the current period and the actual opening degree of the last period of the same control valve are compared, and if the target opening degree of the current period of the control valve is larger than the preset experience opening degree of the control valve and the actual opening degree of the last period at the same time, the control valve is controlled to be opened to the target opening degree at the preset speed increasing rate; otherwise, the control valve is controlled to be directly opened to the target opening degree; according to the method, the problems of violent load fluctuation caused by control valve oscillation and large EH oil pressure fluctuation caused by untimely oil supply of an EH oil supply system can be reduced or avoided in a mode of reducing the control valve lifting rate during increment adjustment of a high-valve-position control valve, the reliability of instant load shedding or unit splitting can be ensured when the load is reduced, and the service life of the EH oil supply system is prolonged. And the operation safety of the unit is ensured.