39results about How to "Change the mode of operation" patented technology

The invention discloses a double-feed blower fan subsynchronous oscillation inhibition method based on virtual impedance control, and the method comprises the steps: enabling a dq-axis component of a rotor current of a double-feed blower fan to serve as an input signal, and filtering a low-frequency component and a fundamental frequency component through a band-pass filter, and then obtaining a subsynchronous current component. The current component brings virtual impedance to a rotor loop through a proportional amplifier and a differentiation link, thereby achieving the effects of increasing the subsynchronous oscillation damping and inhibiting the subsynchronous oscillation. According to the invention, the method starts from the structure of a rotor controller, achieves the research of the relation between the rotor current and the output voltage of the rotor controller, and obtains the equivalent resistance of a rotor side controller, i.e., the virtual resistance value. Afterwards, a double-feed blower fan rotor current transfer function model is used for solving and obtaining a virtual inductance value needed by the virtual impedance control. The method is advantageous in that the method is simple in parameter configuration, is clear in physical concepts, improves a virtual resistance control strategy, is better in adaptability, is low in control cost, and can effectively inhibit the subsynchronous oscillation to a certain degree.

The invention relates to an electronic instrument and a wearable type input device for the same. The wearable type input device comprises a finger action unit and a comprehensive processing unit. A reference position calibrator, a data processing unit and a communication unit are arranged in the comprehensive processing unit. The finger action unit is used for sensing the action state of fingers relative to the ground at a certain moment, and the reference position calibrator in the comprehensive processing unit is used for providing motion information of a body and other movement carriers relative to the ground. The finger action unit and the comprehensive processing unit together form a basic hardware structure for background movement detection and blanking. Accordingly, accurate information of motions of the finger action unit relative to the comprehensive processing unit is obtained and processed to be coordinate data for being called by a display device, and the use requirement for information input or cursor calibrating of the wearable type input device in a static environment and a dynamic environment can be met. The wearable type input device can greatly promote development and application of new-generation electronic intelligence products.

The invention relates to a ground source heat-pipe heat exchange system and a control method. The system comprises an indoor water system, a variable frequency heat pump unit and a buried pipe heat exchange system, wherein the indoor water system is connected to the load side of the variable frequency heat pump unit, and the buried pipe heat exchange system is connected with the ground source side of the variable frequency heat pump unit; the buried pipe heat exchange system comprises a buried pipe heat exchanger, a flow sensor, a ground source side variable-frequency water pump, a plurality of pipeline electromagnetic valves, a plurality of temperature sensors and a controller, and the buried pipe heat exchanger is composed of a plurality of buried pipe subareas with different buried depths; the water main of each buried pipe is connected to a main water supply pipe, and a water return pipe is connected with a main water return pipe; the flow sensor and the ground source side variable-frequency water pump are connected with the main water return pipe, and each pipeline electromagnetic valve and each temperature sensor are respectively connected with the water mains and the main water supply pipe; and the controller is respectively connected with the flow sensor, the ground source side variable-frequency water pump, the pipeline electromagnetic valves and the temperature sensors. The ground source heat-pipe heat exchange system has the advantages of high heat exchange efficiency, low energy consumption and high economic and social benefits and can effectively facilitate the improvement on a soil temperature field.

The invention relates to a planing device and to a method for activating a planing device, with a mining planer 1 reversibly moveable by means of a planer chain 2, with at least two chain drives 3, 4 having variable-speed drive motors 8, with a planer travel measurement system and with a motor control device 11 which, for example by position control, delivers activation parameters for a change in rotational speed of the drive motors 8 for changing the planing speed and which is assigned a control module 12 with automatic load compensation regulation between the drive motors 8. According to the invention, a monitoring module 13 is provided, which, for example by position control, switches off the control module 12 for load compensation regulation or modifies its operating mode and delivers different activation parameters S, S' to the drive motors 8.

The invention relates to a capacitive grounding current distributed compensation method for a medium-voltage power supply system, which belongs to the technical field of the capacitive grounding current compensation of a neutral non-grounding power supply system. In the method, capacitive grounding current distributed compensation transformers are arranged on lines, with relatively greater capacitive grounding currents, of the system in a distributed way, and only compensate the capacitive grounding currents of the corresponding lines, wherein the compensation capacity of each capacitive grounding current distributed compensation transformer is 1.1 times the capacitive grounding currents of the corresponding lines; and 40 to 60 percent of the capacitive grounding currents of the system is compensated by the capacitive grounding current distributed compensation of the whole power grid, and the other is comprehensively compensated by arc extinguishing devices of transformer substations. The capacitive grounding current distributed compensation method has the advantages that: the capacitive grounding current distributed compensation transformers are adopted, so arrangement is simple and maintenance is unnecessary; operation is simple and the capacitive grounding current is compensated in real time; and the power supply reliability of the power grid is radically improved.

Provided is a circulating lifting device. A transmission device is installed on ground, a reversing device is installed on another fixed object, and two chains connect the transmission device and the reversing device. A rotating shaft is connected with the two chains. A moving box is installed on the middle part of the rotating shaft in a vertical oscillating manner. Driven by the transmission device, the device realizes circulation, roundtripping, carrying, loading and unloading, and storage of personnel, materials and goods, and materials. The device is formed by the transmission device, the reversing device, a carrying device, and a stabilizing device. The circulating lifting device has four types. The types are a basic circulating lifting device, an energy-efficient circulating lifting device, a comprehensive circulating lifting device, and an efficient circulating lifting device. The common characteristics are that through changing the structure, the number, and operating methods (circulating or reciprocating motion), circulating paths of the moving box, and changing placing methods (vertical, inclined, horizontal, reversed inclined, and reversed) of the moving boxes, the device has new purposes and becomes a new product. Mechanical equipment manufactured according to principles of the equipment has characteristics of high efficiency, energy conservation, land saving, and cost saving, and the equipment is suitable for automation production in large batch.

The invention discloses a half-direct-fire and half-hot-wind coffee bean baker and a baking method thereof and relates to the technical field of production equipment. The coffee bean baker comprises a bottom support, a silver-skin collector, a gap regulating valve, a hopper, a roller, a driving device, a fire grate, a base and a cooling device. Through a half-direct-fire and half-hot-wind baking mode of the coffee bean baker, heat can be better circulated internally and utilized fully, and coffee beans with good taste can be baked in short time; the defects of heat loss and gradually increasing temperature on the outer wall of a baking oven are overcome; the running mode of heat in a baking environment of the coffee bean baker is changed, coffee beans with better taste are baked in short time, processing time is shortened for customers, and baking efficiency is improved.

The invention discloses an electric power pumping irrigation station. The electric power pumping irrigation station comprises a machine set, a pipeline and a control system, wherein the machine set pressurizes the pipeline to pump water up; the pipeline provides a water delivery channel, the control system provides power to control starting and stopping of the machine set, controls the pipeline as required and adjusts the rotating speed of a water pump, and the pipeline is a variable pipeline. By adopting the electric power pumping irrigation station disclosed by the invention, the defects that the adjustment ranges of flow and lift are narrow and the requirement of high-low table position irrigated areas on the flow and lift of the pumping irrigation station cannot be met are overcome, irrigation equipment which can meet the requirements of low-table position and high flow and can realize operation in high-table position lift working condition is provided, the operating condition range of the machine set is expanded, the requirement of high flow can be met, operation in high-lift working condition can be realized, and electric power pumping irrigation station is flexible and can perform cross-regional operation, thereby improving the utilization ratio of the machine set.

The invention relates to a measuring method for rotational inertia of a wind turbine generator unit. The measuring method comprises the following steps that 1 the weather of which the wind speed is stable in the maximum wind energy capture area of the wind turbine generator unit is selected to conduct measurement; 2 an energy-balance equation is established; and 3 the rotational inertia of the wind turbine generator unit is worked out. According to the measuring method for the rotational inertia of the wind turbine generator unit, measurement is conducted in the maximum wind energy capture area of the wind turbine generator unit when the wind speed is stable; the wind turbine generator unit is controlled to operate in a maximum wind energy tracing mode, and first useful output power and a first rotor rotating speed are obtained; the operation mode of the wind turbine generator unit is changed, the useful output power of the wind turbine generator unit is changed into second useful output power, the rotor rotating speed is changed into a second rotor rotating speed, and first output electric energy is obtained, so that the energy-balance equation is established; the rotational inertia of the wind turbine generator unit is determined based on the energy-balance equation. The measuring method for the rotational inertia of the wind turbine generator unit has the advantage of being excellent.

The invention discloses a double-lane vehicle lane changing guiding method under vehicle-road cooperation, and the method comprises the steps: describing the state information of a vehicle based on acellular automaton model, carrying out the real-time effective evaluation of the threat to the vehicle in real time according to the information of surrounding vehicles, carrying out the traversal ofthe elements of a threat evaluation function, obtaining the position of a minimum value, and giving the vehicle lane changing guidance; in a double-lane environment, subjecting the observation vehicleto vehicle speed induction according to the movement trend of the forward vehicle after lane changing, so that the vehicle speed of the observation vehicle is associated with the acceleration trend of the forward vehicle after lane changing; referring to the motion trend of the backward vehicle, observing that the vehicle adopts a leading acceleration motion rule, and avoiding rear-end collisionaccidents while ensuring motion synchronization; providing early-stage speed guidance for the vehicle close to the blocking point, and avoiding the phenomenon of vehicle starting and stopping; and finally, giving a double-lane vehicle lane changing rule under vehicle-road cooperation to complete lane changing. According to the invention, the problems of vehicle congestion and road section congestion point increase in the future traffic environment are solved.

The invention discloses a resistance type melting furnace and a furnace starting method. The resistance type melting furnace comprises a furnace body, a feeding port and a discharging port are formedin the two sides of the furnace body, a furnace cover is arranged on the upper portion of the furnace body, through holes allowing a first electrode, a second electrode and a plasma torch to penetratethrough are formed in the furnace cover, and the first electrode, the second electrode and the plasma torch penetrate through the through holes and extend into the furnace body. The characteristics of high-temperature flame flow, high center temperature and low peripheral temperature of the plasma torch are adopted for melting and heating the furnace starting raw material, the heating speed is high, and ablation of the furnace body lining is avoided; according to the furnace starting method, furnace starting can be completed in a short time, so that the operation mode of the resistance-type melting furnace is changed, intermittent operation can be carried out, flexibility and convenience are achieved, and the application range of the resistance-type melting furnace is enlarged.

Disclosed is an intelligent blade multi-robot collaborative operation control system. The intelligent blade multi-robot collaborative operation control system comprises a process control layer, a composition configuration layer and a drive connector layer; according to the process control layer, according to the blade machining process needs, servo shaft time-sharing composition and linkage control information is sent to the composition configuration layer; according to the servo shaft composition linkage requirements, the composition configuration layer can configure corresponding servo shaft driver connectors in the drive connector layer in real time in a connected manner, a multi-robot servo shaft linkage control set is formed in a time-sharing manner, linkage control information of the process control layer is transmitted to a servo shaft driver designated in the drive connector layer, and a servo shaft is driven to move. The layered grouped and time-shared configuration linkage control manner is adopted, time-shared composition servo shaft linkage control over multiple servo shafts in one control system can be achieved according to the coordinated process needs, and the problem that multiple servo shafts are combined and linked in a time-shared manner, and multiple control systems need to be arranged is effectively solved.

The invention discloses a novel damper actuator for an automobile air conditioner. A ganged switch is arranged in a controller and performs conduction and cut-off of a power supply; the output of the ganged switch is connected with the damper actuator; a negative electrode of an electric motor in the damper actuator is connected to the outer end of the ganged switch; a positive electrode of the electric motor is provided with an electric brush through an electric motor driving component; a double arc-shaped conductive band is crimped to the electric brush; an outer arc-shaped conductive band of the double arc-shaped conductive band is in forward connection with the middle end of the ganged switch through a diode D2; an inner arc-shaped conductive band of the double arc-shaped conductive band is in reverse connection with the middle end of the ganged switch through a diode D1. According to the damper actuator disclosed by the invention, mechanical blocked rotation and PTC current limitation are changed into electrical limiting control; the electric motor driving component in the improved damper actuator runs back and forth through the electric brush and the double arc-shaped conductive band; when the electric motor driving component runs to be in place, the electric motor driving component is completely separated from a working power supply and does not work or consume electricity, so that the too early damage to an output shaft of the damper actuator due to fatigue is avoided, and the influence on the performance and the service life of the electric motor is also avoided.

The invention discloses a device and a method for coupling efficient biological treatment and sludge reduction of trademark fabric production wastewater. The device comprises a neutralization tank, an adjusting tank connected with an outlet of the neutralization tank, a facultative tank connected with an outlet of the adjusting tank, a first-stage sedimentation tank connected with an outlet of the facultative tank, an aerobic tank connected with an outlet of the first-stage sedimentation tank, and a second-stage sedimentation tank connected with an outlet of the aerobic tank, and an outlet of the first-stage sedimentation tank and an outlet of the second-stage sedimentation tank are respectively connected with an inlet of the adjusting tank. According to the method disclosed by the invention, FeCl2 is added into inlet water of the adjusting tank, so that the pH of the alkaline wastewater is reduced, trace elements for growth of activated sludge microorganisms are provided, the activity of the microorganisms and the flocculation precipitability of the sludge are improved, and the biodegradation efficiency of the wastewater and the adsorption removal of antimony are improved. According to the method, the biological treatment efficiency of the wastewater can be improved while sludge reduction is realized, the operation is simple, the cost is relatively low, and engineering is easy.

This case is a PLC-based block pre-curing conveying system, which is used to transport the mold car from the batching building to the preset track line inside the pre-curing room. The pre-curing conveying system includes: a PLC controller, controlled by the PLC controller controls the ferry car installed in the batching building, and the conveyor chain preset according to the preset track line, the ferry car includes a horizontal formwork and a longitudinal formwork, and the PLC controller includes a sequence Feed control module, positioning control module, output brake control module and man-machine interface module, operation control module. The entire block pre-curing and conveying process in this case is automatically controlled by PLC, which changes the operation mode of traditional wheels and reduces cost input.

The invention discloses a method for replacing a vibration damper. In the operation method, a bracket and a vibration damper claw hook for replacing the vibration damper are adopted for supporting, so that labor force is reduced, and the labor intensity of operators is reduced; and meanwhile, a bolt is locked and detached by using an electric bolt locking device, so that safety and reliability are achieved, and the function of remote operation can be realized.

The invention relates to a device and a method for improving biological treatment efficiency of trademark fabric production wastewater through sludge reduction. The device comprises a coating wastewater treatment system and a finishing wastewater treatment system which are connected in parallel, an outlet of the coating wastewater treatment system and an outlet of the finishing wastewater treatment system are respectively connected with an inlet of an aerobic tank, and an outlet of the aerobic tank is connected with an inlet of a second-stage sedimentation tank. The method comprises the following steps: (1) adding a proper amount of FeCl2 into inlet water of a regulating reservoir for finishing wastewater; (2) enabling sludge in a first-stage sedimentation tank in two pretreatment processes to flow back to the regulating reservoir and a facultative tank respectively; (3) discharging effluent of the first-stage sedimentation tank of the two pretreatment processes into an aerobic tank, wherein the aerobic tank adopts an aeration and static sedimentation combined operation mode; and (4), enabling part of the sludge in the second-stage sedimentation tank to flow back to the regulating reservoir for the coating wastewater and the finishing wastewater, and enabling part of the sludge to flow back to the aerobic tank. According to the method, the biological treatment efficiency of the wastewater can be improved while sludge reduction is achieved.

The invention belongs to the technical field of electrics, and particularly relates to a circulating pump frequency converter power frequency and frequency conversion switching system and method. The system comprises a circulating pump frequency converter, a switching device, a circulating pump motor, a voltage transformer, a circuit breaker and a power supply bus. Wherein one end of the circulating pump frequency converter is connected to a power supply bus through the circulating pump frequency converter inlet wire circuit breaker and the circulating pump upstream circuit breaker in sequence, and the other end of the circulating pump frequency converter is connected with the circulating pump motor through the circulating pump frequency converter outlet wire circuit breaker; the circulating pump frequency converter inlet wire circuit breaker is connected with the circulating pump frequency converter outlet wire circuit breaker through another bypass line, and a switching device is arranged on the circulating pump frequency converter inlet wire circuit breaker; one end of the circulating pump frequency converter bypass circuit breaker is connected to a path between the circulating pump frequency converter inlet wire circuit breaker and the circulating pump upstream circuit breaker, and the other end of the circulating pump frequency converter bypass circuit breaker is connected to a path between the circulating pump frequency converter outlet wire circuit breaker and the circulating pump motor. On-line undisturbed switching of the power supply of the high-power circulating pump motor can be realized according to the requirements of a process system.

The invention relates to a capacitive grounding current distributed compensation method for a medium-voltage power supply system, which belongs to the technical field of the capacitive grounding current compensation of a neutral non-grounding power supply system. In the method, capacitive grounding current distributed compensation transformers are arranged on lines, with relatively greater capacitive grounding currents, of the system in a distributed way, and only compensate the capacitive grounding currents of the corresponding lines, wherein the compensation capacity of each capacitive grounding current distributed compensation transformer is 1.1 times the capacitive grounding currents of the corresponding lines; and 40 to 60 percent of the capacitive grounding currents of the system iscompensated by the capacitive grounding current distributed compensation of the whole power grid, and the other is comprehensively compensated by arc extinguishing devices of transformer substations.The capacitive grounding current distributed compensation method has the advantages that: the capacitive grounding current distributed compensation transformers are adopted, so arrangement is simple and maintenance is unnecessary; operation is simple and the capacitive grounding current is compensated in real time; and the power supply reliability of the power grid is radically improved.

The invention relates to the technical field of power distribution network energy saving, in particular to a power distribution network step-down energy-saving optimization method considering a power spring, which comprises the following steps: establishing a node admittance matrix and a power spring steady-state model of a power distribution network; constructing a corresponding first-stage optimization model and a corresponding second-stage optimization model based on the node admittance matrix and the power spring steady-state model of the power distribution network; the first-stage optimization model generates a scheduling strategy corresponding to discrete control equipment through load requirements in a rolling period and prediction data output by distributed power generation; and in the second stage, the optimization model optimizes and updates the set value of the power spring according to the load demand in the rolling period, the prediction data output by the distributed power generation and the scheduling strategy of the discrete control equipment, and generates the output reactive power of the power spring. According to the power distribution network voltage reduction and energy conservation optimization method, the voltage reduction and energy conservation adjustment response efficiency of the power distribution network can be improved, and the load on the demand side can change along with the generating capacity.

The invention relates to a train and particularly discloses an external power high-speed train. The external power high-speed train comprises a train body and is characterized in that track boards are symmetrically arranged at two sides of the bottom of the train body; bases which are sequentially arrayed at intervals and positioned on wheel pair sleepers are arranged below the train body; power wheel pairs are erected on the bases; the power wheel pairs include driving wheels and driven wheels connected through drive shafts; the driving wheels and the driven wheels are corresponding to the track boards in position; drive motors are connected on the driving wheels; a plurality of adjacent drive motors form a power unit; and the power unit is connected with a remote control device on the train body through a signal receiver. The external power high-speed train is simple in structure, stable in operation, low in erection cost, less in energy consumption, capable of basically changing the operation mode of the train, strong in carrying capacity, capable of effectively improving the transport capacity and solving the problem of traffic congestion on holidays and festivals, and suitable for being widely popularized and applied.

The invention relates to a coordinated voltage control method for an alternating-current and direct-current hybrid power system, and belongs to the technical field of automatic voltage control for power systems. The coordinated voltage control method includes acquiring key operating measured values of a direct-current system and a near-field alternating-current system of the direct-current system; judging a current coordinated control state of the power system according to the operating measured values; performing tertiary optimal control computation and coordinated secondary optimal control computation on an integral power grid according to the coordinated control state; issuing computation results to systems of substations. The coordinated voltage control method has the advantages that an AVC (automatic voltage control) system can assuredly instantly perform the tertiary optimal control computation and the coordinated secondary optimal control computation on the integral power grid under the condition that operating modes of the direct-current system and the near-field alternating-current system are changed greatly, so that computation control strategies of the AVC system are assuredly coordinated with a current working condition of the alternating-current and direct-current hybrid power system, and unreasonable reactive flow in the power system can be prevented; the coordinated voltage control method can be integrated in the AVC system which is operated in fields, so that the voltage safety level of the alternating-current and direct-current hybrid power system can be enhanced.

The invention discloses a channel prototype frost heaving experiment and anti-frost heaving damage inspection system in an open system of a seasonal freezing soil area. A channel model is composed ofthe four parts of a channel lining layer, channel foundation soil, a groundwater recharge system and a temperature guarantee system. The channel lining layer is arranged on the channel foundation soil, the groundwater recharge system is composed of a water storage pool and water inlet / exhaust pipes, the water storage pool is arranged under the channel foundation soil, and the water inlet / exhaust pipes are introduced into the water storage pool; and the temperature guarantee system is composed of an upper enclosed space above a channel bank and thermal insulation parts in the soil, and a refrigerating device is arranged in the upper enclosed space. The system can be used for multi-aspect experimental studies such as experimental studies of a channel frost heaving damage mechanism about theseasonal freezing soil area on a prototype channel, effect inspection of new anti-frost heaving damage measures and methods before promotion, advantages and disadvantages of various measures and methods and application conditions of various measures and methods.

The invention discloses a double-feed blower fan subsynchronous oscillation inhibition method based on virtual impedance control, and the method comprises the steps: enabling a dq-axis component of a rotor current of a double-feed blower fan to serve as an input signal, and filtering a low-frequency component and a fundamental frequency component through a band-pass filter, and then obtaining a subsynchronous current component. The current component brings virtual impedance to a rotor loop through a proportional amplifier and a differentiation link, thereby achieving the effects of increasing the subsynchronous oscillation damping and inhibiting the subsynchronous oscillation. According to the invention, the method starts from the structure of a rotor controller, achieves the research of the relation between the rotor current and the output voltage of the rotor controller, and obtains the equivalent resistance of a rotor side controller, i.e., the virtual resistance value. Afterwards, a double-feed blower fan rotor current transfer function model is used for solving and obtaining a virtual inductance value needed by the virtual impedance control. The method is advantageous in that the method is simple in parameter configuration, is clear in physical concepts, improves a virtual resistance control strategy, is better in adaptability, is low in control cost, and can effectively inhibit the subsynchronous oscillation to a certain degree.

A novel energy-saving boiler, comprising a hearth (11); the hearth (11) is provided with a furnace tank (12) on the upper part; the furnace tank (12) is provided with a flue pipe (7) therein; the furnace tank (12) is filled with liquid and is provided with a hot water outlet (16) at the top; the hearth (11) is provided with a cold water tank (3) on one side, and an open truncated cone (6) therein; a closed water circulating system is formed in a chamber between an inner surface and an outer surface of the cone; the truncated cone (6) is provided with an evaporator (5) on one side; the upper bottom surface of the truncated cone (6) faces the evaporator (5), and the lower bottom surface faces a front arch (9); the furnace tank (12) is connected to a flue gas heat recovery device (14); and the flue gas heat recovery device (14) is connected to a three-tandem-tower desulphurization precipitator (15). The boiler effectively increases heat absorption area, and has the advantages of high combustion efficiency, fast temperature rise, low exhaust fume temperature, smooth flue gas flow, good comprehensive operation effect and easy maintenance.

The invention relates to a measuring method for rotational inertia of a wind turbine generator unit. The measuring method comprises the following steps that 1 the weather of which the wind speed is stable in the maximum wind energy capture area of the wind turbine generator unit is selected to conduct measurement; 2 an energy-balance equation is established; and 3 the rotational inertia of the wind turbine generator unit is worked out. According to the measuring method for the rotational inertia of the wind turbine generator unit, measurement is conducted in the maximum wind energy capture area of the wind turbine generator unit when the wind speed is stable; the wind turbine generator unit is controlled to operate in a maximum wind energy tracing mode, and first useful output power and a first rotor rotating speed are obtained; the operation mode of the wind turbine generator unit is changed, the useful output power of the wind turbine generator unit is changed into second useful output power, the rotor rotating speed is changed into a second rotor rotating speed, and first output electric energy is obtained, so that the energy-balance equation is established; the rotational inertia of the wind turbine generator unit is determined based on the energy-balance equation. The measuring method for the rotational inertia of the wind turbine generator unit has the advantage of being excellent.

The invention relates to a coal plowing device and a method for controlling the coal plowing device, comprising: a mining planer (1) capable of forward and reverse movement by means of a planer traction chain (2); at least two drive units with adjustable speed Chain drive (3, 4) of the motor (8); a planer stroke measuring system and a motor control device (11), which provides, for example, position-controlled control for varying the rotational speed of the drive motor (8) parameters to vary the speed of the planer, and the motor control unit is equipped with a control module (12) with automatic load balance adjustment between the drive motors (8). According to the invention, a monitoring module (13) is provided, which for example switches off the control module (12) for load balance regulation in a position-controlled manner or modifies its mode of operation and provides different control parameters (S , S').

A boiler air heater optimizing operation control device comprises a temperature sensor PTki installed on an air side inlet of a boiler air heater, a temperature sensor PTko installed on an air side outlet of the air heater, an oxynitride concentration sensor PNOXi installed on an inlet of a boiler SCR denitration system, an oxynitride concentration sensor PNOXo installed on an outlet of the boilerSCR denitration system, differential pressure transducers P delta P installed at the two ends of the smoke side of a boiler air pre-heater, a temperature sensor P theta y installed on an outlet of the smoke side of the air pre-heater, a data acquiring unit and a computer provided with Visual Basic software. According to the boiler air heater optimizing operation control device, the oxynitride concentration on the inlet of the SCR denitration system, the oxynitride concentration on the outlet of the SCR denitration system, the differential pressure on the smoke side of the air pre-heater and other parameters are introduced, the factor that air pre-heater is blocked by running of the denitration system and the too high ammonia escaping rate is taken into consideration and serves as anotherinput parameter for controlling the steam inlet amount of the air heater, the air temperature on the outlet of the air heater is properly raised, so that hydrogen sulfate generated by the denitrationsystem is not prone to congealing on the heat exchanging face of the air pre-heater, and blockage of the air pre-heater is prevented.