115 results about "Surge control" patented technology

The invention provides an anti-surge control method. The anti-surge control method comprises the following steps: acquiring historical data of a surge point; inputting the historical data of the surge points into the to-be-trained model to obtain an anti-surge model; based on the anti-surge model, determining an anti-surge line of the fan; the anti-surge line is generated by translating the abscissa of the surge line of the fan in the anti-surge coordinate system rightwards by a first preset unit and translating the ordinate downwards by the first preset unit; the real-time fan inlet flow and the real-time fan total energy head of the fan are obtained, and the real-time working condition point of the fan is determined; whether the real-time working condition point is located below an anti-surge line or not is judged, and if not, the opening degree of an anti-surge valve is adjusted to 100%; if yes, the anti-surge opening degree and the anti-surge valve opening time are determined based on the real-time working condition point, the anti-surge valve is opened according to the anti-surge valve opening time, the anti-surge valve is controlled to operate at the anti-surge opening degree, and the problem that the position area where the working condition point of the draught fan is located cannot be accurately and automatically adjusted at present is solved.

The invention discloses an axial-flow type anti-surge control valve, which relates to the technical field of industrial fluid control equipment, and adopts the technical scheme that the axial-flow type anti-surge control valve comprises a valve body, an anti-surge mechanism is arranged at one end in the valve body, the anti-surge mechanism comprises a rotating cylinder and a fan blade overturning assembly, the fan blade overturning assembly is arranged on the rotating cylinder in a sleeving manner, and the fan blade overturning assembly is arranged in the valve body; the fan blade overturning assembly comprises a plurality of fan blades, and the fan blade overturning assembly can adjust the overturning angles of the fan blades in a self-adaptive mode according to the wind pressure; a flow control inner ring is fixedly installed at the other end in the valve body and arranged at one end of the valve clack in a sleeving mode, a flow control outer ring is installed on the outer wall of the flow control inner ring in a sliding mode, a plurality of round holes are formed in the flow control inner ring and the flow control outer ring, and a connecting rod is installed between the flow control outer ring and the fan blade overturning assembly. The double mechanisms are driven to be linked by means of gas pressure change, timely response to sudden flow change is achieved, the stability of the valve is remarkably enhanced, and hysteresis and complexity of a traditional control system are avoided.

The invention relates to a surge control method and device, a vehicle and equipment, and relates to the technical field of vehicles, and the method comprises the steps: obtaining the in-pile flow and a surge control threshold value of a fuel cell; the in-pile flow is the flow of reaction gas entering the electric pile of the fuel cell; the in-pile flow is determined based on the air filter flow and the estimated bypass flow; based on the in-pile flow and the surge control threshold, judging whether an air system of the fuel cell meets a surge control condition or not; the surge control condition is used for representing a condition for performing surge control on the air system; and if the air system meets the surge control condition, surge control is conducted on the air system. Therefore, surge control is effectively carried out on the air compressor.

The embodiment of the invention discloses an anti-surge control method and device for a compressor, the compressor, a storage medium and a program product. Wherein an inlet pressure measuring module and an inlet regulating valve are arranged on the gas inlet side of the compressor, and an outlet pressure measuring module and an outlet regulating valve are arranged on the gas outlet side of the compressor; the method comprises the steps that the current inlet pressure, measured by an inlet pressure measuring module, of a compressor and the current outlet pressure, measured by an outlet pressure measuring module, of the compressor are obtained, and the current pressure difference of an inlet and an outlet of the compressor is calculated; comparing the current pressure difference with a set pressure difference threshold value to obtain a regulation and control parameter; determining a current control interval from a predetermined split-range control model based on the regulation and control parameters; and on the basis of the current control interval, opening control is conducted on at least one of the inlet adjusting valve and the outlet adjusting valve. According to the technical scheme, the surge risk of the compressor can be effectively reduced.

The invention discloses a five-section anti-surge control method for a cracked gas compressor. Comprising two sets of anti-surge systems in a cracking compressor cold and hot reflux control mode, wherein the anti-surge systems are composed of five-return five-hot reflux valves B connected to an outlet of a cracking gas compressor and a cracking gas feeding end and five-return five-cold reflux valves A connected to an outlet of a reflux tank of a high-pressure depropanizing tower and the cracking gas feeding end; the two compressor anti-surge control systems carry out coordinated control on backflow of the five-return five-hot-backflow valve B and backflow of the five-return five-cold-backflow valve A. Anti-surge control over the five-return five-cold-backflow valve A is added. The cold reflux control compressor anti-surge control system is provided with flow low limit control of a five-section outlet C2 hydrogenation unit and 30% opening limit of a hot anti-surge valve. The anti-surge line of the five-return five-cold-backflow A valve is consistent with that of the five-return five-hot-backflow B valve, and the anti-surge line is 1.2 times that of the five-return five-hot-backflow B valve. According to the invention, the technical problem of more stable control of the five-section anti-surge valve can be solved.

The invention relates to a bypass flow control method and device, a fuel cell air system and a vehicle, and relates to the technical field of batteries, and the method comprises the following steps: under the condition that an air compressor of the fuel cell air system is in a surge working condition, determining a bypass flow request value based on the surge control flow and in-pile flow of the air compressor; the surge control flow is the minimum flow threshold value of safe operation of the air compressor; determining an opening degree feed-forward value of a bypass valve of the fuel cell air system based on the bypass flow rate request value; and the opening degree of the bypass valve is controlled based on the opening degree feed-forward value so as to control the bypass flow of the fuel cell air system, and therefore the opening degree feed-forward value is used for predicting the opening degree needed by the bypass valve according to the bypass flow request value, and opening degree adjustment of the bypass valve can quickly respond to changes of the surge working condition of the air compressor. And the bypass flow can be quickly adjusted through the opening feedforward value, so that the air compressor can quickly recover stable operation.

The invention discloses an anti-surge control method for a compressor unit, and particularly relates to the field of operation control of the compressor unit, a plurality of sensor terminals for pressure, flow, temperature and the like are deployed in the installation and debugging stage of the compressor unit, working parameters such as air inlet pressure, flow, exhaust pressure and the like are collected in real time, and data are preprocessed after collection; smoothing data by adopting a moving average filtering method, cleaning abnormal values according to a 3 sigma principle, processing missing values according to a missing proportion and normalizing the missing values, constructing an operation condition model based on preprocessed data, and calculating anti-surge threshold values in low, medium and high load areas by combining parameters such as air inlet flow and exhaust pressure; and constructing an exhaust pressure and intake flow prediction model by using historical data, and predicting a future state. The surge state is judged by comparing the predicted value with the threshold value, then the opening degree of the air inlet and exhaust adjusting valve is adjusted, stable operation of the compressor unit is guaranteed, the surge phenomenon is effectively prevented, and the operation safety and reliability of the compressor unit are improved.

The invention relates to the technical field of compressors, in particular to a series-connection automobile towing compressor system and an automatic surge control method. The series-connection automobile towing compressor system comprises a plurality of stages of automobile towing compressors, a plurality of temperature reduction devices, a bypass return valve, a plurality of temperature reduction adjusting valves and a plurality of orifice plate flowmeters. The problems that in the prior art, cost is high, energy consumption is large and the control effect is not ideal are effectively solved, the multiple stages of automobile dragging compressors are arranged in series and matched with the temperature reducing device and the bypass backflow valve, effective circulation and temperature control of media are achieved, cost of independently using a surge backflow valve in the prior art is reduced, and meanwhile the control effect is good. Through the arrangement of the vortex shedding flowmeter, the pressure sensor, the temperature sensor and the rotating speed sensor, the inlet flow, pressure, temperature and rotating speed of each stage of compressor are accurately measured, in combination with theoretical surge pressure ratio calculation, the surge risk is pre-judged in advance and automatically controlled, and energy consumption increase caused by premature intervention of a bypass return valve at the low rotating speed is avoided.

The application discloses a kind of anti-surge control methods for compressor unit, specifically relates to the field of compressor unit operation control, the application is deployed pressure, flow, temperature and other various sensor terminals in the installation and commissioning phase of compressor unit, real-time acquisition inlet pressure, flow, exhaust pressure and other working parameters, after acquisition, data is preprocessed, smooth data using moving average filtering method, according to 3σ principle washes abnormal value, according to missing proportion processing missing value and normalization, based on preprocessed data, build operating condition model, combined with inlet flow and exhaust pressure and other parameters, calculate anti-surge threshold in low, medium and high load area, at the same time, use historical data to build exhaust pressure and inlet flow prediction model, predict future state. By comparing predicted value and threshold value to judge surge state, and then adjust inlet and outlet adjusting valve opening, ensure the stable operation of compressor unit, effectively prevent surge phenomenon from occurring, improve the safety and reliability of compressor unit operation.

The invention discloses an oil-free magnetic suspension low-temperature refrigerating unit control method and a storage medium, and relates to the technical field of intelligent refrigerating unit control, cooperative control between units is achieved through a multi-agent reinforcement learning framework, and a system can autonomously recognize and restrain the pressure fluctuation coupling phenomenon between parallel units; coherence and phase difference of pressure signals between units are monitored in real time by adopting a frequency domain analysis method, so that the system can predict surge risk in advance and adopt a phase desynchronization strategy, and coupling oscillation is avoided fundamentally; the design of the collaborative reward function embeds the anti-surge priority principle into the agent decision process, it is ensured that the anti-surge control weight is automatically enhanced when the system approaches the surge boundary, and meanwhile energy efficiency optimization and operation stability are considered; a near-end strategy optimization algorithm based on an attention mechanism enables each agent to effectively learn an interaction relationship between units, thereby generating a coordinated control instruction.

The invention relates to a multi-mode switching anti-surge control method for a compressed air energy storage centrifugal compressor, which comprises the following steps: acquiring pressure and flow information at an inlet of the compressor, calculating a deviation value and a deviation change rate, and determining a control mode by a microprocessor; the fuzzy control part determines a control trend by inquiring a fuzzy membership table, the PID control part controls pressure through an outer ring and controls flow through an inner ring, weights of the pressure and the flow are distributed by a switching function, and finally, an output current signal is used for controlling the opening degree of an anti-surge valve, so that the surge phenomenon is inhibited. Therefore, the problems that an existing anti-surge passive control method mainly stays at a traditional PI control level, but a traditional PID control algorithm is greatly influenced by disturbance and model mismatch, and the anti-surge control application effect is greatly influenced are solved, the method can cope with scenes such as large wind power fluctuation and strong reality of illumination uncertainty factors, and the method is suitable for large-scale popularization and application. The method is suitable for compressed air energy storage large-scale wind and light absorption.

The invention discloses an engine surge control method and device, electronic equipment and a storage medium. The engine surge control method comprises the steps that the current working state of the supercharger is an enabling state, the average value of absolute values of supercharger outlet pressure band-pass filtering results is compared with a surge threshold value, and whether surge happens to the supercharger or not is judged; the driving delay time of the current anti-surge valve is recognized, predicted values of the key characteristic quantity after the driving delay time of the current anti-surge valve are predicted according to the current engine working condition parameters, and the predicted values comprise a supercharger pressure ratio predicted value and an air inlet flow predicted value; and the working state of the current anti-surge valve is an enabling state, and whether the current anti-surge valve is opened or not is comprehensively judged according to the pressure ratio predicted value of the supercharger, the difference value between the rear pressure of the supercharger and the pressure of the intake manifold and the opening degree of an accelerator pedal. The anti-surge valve is controlled to be opened and closed at a proper time, so that surge of the supercharger is avoided.

The invention relates to the technical field of aero-engines, and discloses an anti-surge method and system for an aero-hybrid electric engine, and the method comprises the steps: setting a value interval of the maximum allowable acceleration rate according to the structural integrity limitation and acceleration performance requirements of the engine; compressor performance data are obtained through a compressor component performance test, and a linear prediction model changing along with time is established based on the performance data of adjacent moments; predicting an engine operation state in a future preset time period according to the linear prediction model acceleration rate; and calculating a surge margin according to the predicted operation state, and when the predicted surge margin is lower than a preset safety threshold, dynamically adjusting the maximum allowable acceleration rate. According to different severe environments and working conditions, the variable acceleration rate limit value is set, the surge margin is strictly controlled, surge can be actively restrained, the surge risk is greatly reduced, full-process closed-loop anti-surge control is formed, the method is suitable for complex working conditions and multi-scene application, an engine is effectively protected, and flight safety is guaranteed.

The application discloses a centrifugal air compressor surge control method, system, electronic equipment and storage medium, and the centrifugal air compressor surge control method comprises the following steps: obtaining the exhaust pressure variation intensity of a centrifugal air compressor; performing classified control according to the obtained exhaust pressure variation intensity value; when it is detected that the exhaust pressure variation intensity is less than a set maximum pressure variation threshold value and greater than a set minimum pressure variation threshold value, switching the anti-surge valve to an anti-surge automatic control mode; under the anti-surge automatic control, slowly opening the anti-surge valve to introduce airflow into the atmosphere and discharge the airflow; after continuously detecting that the exhaust pressure variation intensity is less than the set minimum pressure variation threshold value and maintaining the set time, switching the anti-surge valve out of the anti-surge automatic control mode and restoring the anti-surge valve to a normal control mode; and when it is detected that the exhaust pressure variation intensity is greater than the set maximum pressure variation threshold value, switching the anti-surge valve to a surge protection mode and switching to a surge fast-opening mode. The application can improve the stability of the centrifugal air compressor.

The invention relates to a self-adaptive control method, system and equipment for an expansion machine and a medium, and relates to the technical field of expansion machine control. The expansion machine self-adaptive control method comprises the steps that one or more of set inlet pressure and power corresponding to an expansion machine, set outlet pressure corresponding to a compressor connected with the expansion machine and set exhaust pressure is / are obtained; and based on a preset valve opening degree control model, the opening degrees of one or more of an inlet guide valve, a bypass valve and an anti-surge control valve of the expansion machine are controlled by utilizing one or more of set inlet pressure and power corresponding to the expansion machine and set outlet pressure and set exhaust pressure corresponding to a compressor connected with the expansion machine. According to the embodiment, self-adaptive control of the expansion machine can be achieved.

The invention discloses an anti-surge system device of a centrifugal compressor and a control method, and particularly relates to the technical field of anti-surge. A first pressure transmitter; a first temperature transmitter; a second pressure transmitter; a second temperature transmitter; a branch pipeline; an anti-surge return valve; an anti-surge reflux cooler; a temperature control valve; a third temperature transmitter; the invention provides an anti-surge control system. According to the invention, an anti-surge backflow method of throttling first and then cooling is adopted, and temperature control is set at the outlet of the cooler, so that the problems of cooling first, pressure reduction second and carrying of a large amount of liquid after pressure reduction in the anti-surge backflow process are effectively solved, the guarantee of stable work is provided, and the economic benefit is further improved.

The invention relates to the technical field of air conditioner refrigerating systems, and provides a machine room air conditioner refrigerating system based on an air flotation centrifugal compressor and a surge monitoring method. The system comprises an air flotation centrifugal compressor, a condenser, an economizer, an evaporator and a compressor driver, and the compressor driver is configured to collect state information of the air flotation centrifugal compressor and conduct surge monitoring on the air flotation centrifugal compressor according to the state information. The air flotation centrifugal compressor is adopted to replace a scroll compressor to be applied to the field of machine room air conditioners, the service life of a unit is longer, the energy efficiency is better, and an oil-free system is easier to maintain and use. In addition, according to the method for monitoring surge of the air flotation centrifugal compressor, devices such as a flow sensor are not needed, the two parameters of speed and power are collected through an inherent controller of the air flotation centrifugal compressor, whether surge occurs or not is judged through logic, and control is more accurate, reliable and rapid.

The invention discloses a surge control system and a control method thereof. The surge control system comprises a surge valve, a three-way valve and a control unit, the first end of the surge valve is communicated with a first pipeline between the throttle valve and the intercooler; the second end of the surge valve is communicated with a second pipeline between the throttle valve and the intake manifold; the third end of the surge valve is communicated with a third pipeline between the air inlet channel and the supercharger; the three-way valve is arranged between the second end of the surge valve and the second pipeline; the inlet end of the three-way valve is communicated with the second end of the surge valve; a first outlet end of the three-way valve is communicated with the second pipeline; a second outlet end of the three-way valve is communicated with the third pipeline; the control unit is in communication connection with the three-way valve. According to the technical scheme, the noise problem caused by critical opening of the surge valve is solved, the surge risk of a whole machine pipeline is reduced, and meanwhile the driving and riding comfort is improved.

The invention discloses a heat pump system control protection method, and belongs to the technical field of heat pump systems. The method comprises a pneumatic anti-surge control stage and an energy efficiency optimization stage, in the pneumatic anti-surge control stage, double-temperature check and double-pressure check are adopted, real-time detection values of the pressure ratio and the superheat degree are obtained, the real-time detection values of the pressure ratio and the superheat degree are compared with a preset critical surge pressure ratio threshold value and a preset critical superheat degree threshold value respectively, and according to the comparison results, the energy efficiency of the air conditioner is optimized. When in a critical surge state, entering a pre-judgment stage, alarming and not stopping; when the surge state is reached, entering a practical judgment stage; after the PLC program receives the surge alarm signal, entering a rapid processing stage, and executing a deceleration shutdown measure; in the energy efficiency optimization stage, energy efficiency is optimized through latent heat cooling control, intelligent work control and multi-machine-head benefit optimization control. By adopting the control strategy provided by the invention, the comprehensive energy efficiency IPLV performance of the heat pump system can be improved to the maximum extent.

A method (1000) is disclosed for performing anti-surge control in a centrifugal compressor (100) working with a fluid in supercritical conditions, wherein the centrifugal compressor (100) is endowed by a surge limit line (200) independent from pressure and temperature values, comprising the phases of: calculating (1200) a compressor operating point OP, as a function of an isentropic exponent in volume (k vs ); and calculating (1300) a distance between the compressor operating point OP and the surge limit line (200).

The present invention discloses an axial flow anti-surge control valve, which relates to the technical field of industrial fluid control equipment. Its technical solution includes: a valve body, one end of the valve body is equipped with an anti-surge mechanism, the anti-surge mechanism includes a rotating cylinder and a fan blade flip assembly, the fan blade flip assembly is sleeved on the rotating cylinder, the fan blade flip assembly includes a plurality of fan blades, and the fan blade flip assembly can adaptively adjust the flip angle of the fan blade according to the wind pressure; the other end of the valve body is fixedly equipped with a flow control inner ring, the flow control inner ring is sleeved on one end of the valve disc, and a flow control outer ring is slidably installed on the outer wall of the flow control inner ring, and the flow control inner ring and the flow control outer ring are both provided with a plurality of circular holes, and a connecting rod is installed between the flow control outer ring and the fan blade flip assembly. The present invention relies on gas pressure changes to drive the dual mechanism linkage to achieve timely response to flow mutations, significantly enhance the valve stability, and avoid the hysteresis and complexity of traditional control systems.

The invention provides a design method for a radial controller of an active magnetic suspension centrifugal compressor, and belongs to the technical field of compressors. The method comprises the following steps: carrying out stress analysis on the single-degree-of-freedom radial magnetic bearing of the active magnetic suspension centrifugal compressor and establishing a kinetic analysis model of the four-degree-of-freedom radial magnetic bearing of the active magnetic suspension centrifugal compressor; an optimal controller of the four-degree-of-freedom radial magnetic bearing of the active magnetic suspension centrifugal compressor is designed based on a quadratic regulation controller, so that a rotor can be stably suspended, and a basis is provided for good operation of an anti-surge controller; designing a recursive least square self-adaptive filter to process the displacement data of the four-degree-of-freedom radial magnetic bearing fed back by the eddy current sensor so as to improve the accuracy of the displacement information of the radial magnetic bearing; and an emergency tripping system of the active magnetic suspension centrifugal compressor is designed, and when the displacement of the rotor exceeds a set threshold value, the whole active magnetic suspension centrifugal compressor is shut down immediately.

The utility model discloses a methanol engine and a pneumatic control system thereof and relates to the technical field of engines. The air control system comprises a supercharger, a throttle valve, an anti-surge valve, an air inlet header pipe and a methanol rail pipe. The throttle valve is communicated with the supercharger through a throttle valve air inlet pipe, a supercharging front air inlet pipe is installed on the supercharger, and the anti-surge valve is communicated between the throttle valve air inlet pipe and the supercharging front air inlet pipe through an anti-surge connecting pipe. The air inlet main pipe is communicated with the throttle valve and is communicated with the air cylinder through the air inlet manifold; the methanol rail pipe is communicated with an external methanol supply skid-mounted device, the methanol rail pipe is a normally-opened double-layer pipe, an inner pipe of the methanol rail pipe is a methanol branch pipe, an outer pipe of the methanol rail pipe is an air branch pipe, and the methanol branch pipe is communicated with an air inlet manifold through a methanol sprayer. All-working-condition anti-surge control can be achieved, the reliability of the supercharger is improved, the engine maintenance space is enlarged, and the construction difficulty is reduced. Meanwhile, the utility model discloses a methanol engine.

The invention discloses an anti-surge control method and system of a centrifugal compressor and a storage medium, and relates to the technical field of anti-surge control of centrifugal compressors, a reference prediction operation point is predicted through a compressor physical model, a future residual error is predicted through a data driving residual error compensation model, and the anti-surge control of the centrifugal compressor is achieved. And the reference prediction operation point and the future residual error are fused to obtain a high-precision fusion prediction result, so that high-precision dynamic prediction of the surge boundary is realized. The dynamic surge margin is calculated in advance, the hierarchical intervention control strategy is executed based on the dynamic surge margin, conversion from passive response to active prevention is achieved, and surge prevention timeliness and safety are remarkably improved. And through dynamic and accurate margin management, the compressor can run closer to a high-efficiency area on the premise of ensuring safety, so that the overall energy efficiency is improved.

1. Name of the designed product: graphic user interface for real-time condition monitoring of centrifugal compressor. 2. Use of the designed product: centrifugal compressor. 3. Design points of the designed product: graphic user interface displayed on the display screen panel. 4. Picture or photo best indicating the design points: front view. 5. Use of the graphic user interface: for displaying real-time condition and anti-surge control of centrifugal compressor main and auxiliary equipment. 6. Change state description of the graphic user interface: the front view is the main interface of the design.

Methods for a turbocharged engine, comprising: Adjusting a pressure surge line of a compressor map during vehicle operation as a function of vehicle speed.

The anti-surge dynamic adjustment method for the blast furnace blower comprises the following steps: carrying out a surge test, obtaining surge point data under different stationary blade angles, and establishing an initial surge line; performing temperature compensation on the initial surge line to obtain a dynamic surge line changing along with the inlet temperature; based on the dynamic surge line, determining a dynamic anti-surge adjusting line; operating parameters of the fan are collected in real time, and the deviation and the deviation change rate of the working condition point and the anti-surge adjusting line are calculated; and according to the deviation and the deviation change rate, the opening degree of the anti-surge valve is dynamically adjusted, and quick opening and slow closing control over the anti-surge valve is achieved. According to the method, a real-time fan surge curve and an anti-surge adjusting line can be provided along with seasonal temperature changes, the change trend of the working condition of the fan is collected, analyzed and predicted, anti-surge control output is dynamically adjusted, the operation space of the fan is enlarged, the capability of preventing the dangerous surge working condition of the blast furnace fan is improved, pressure fluctuation is stabilized while the fan is protected, and the service life of the fan is prolonged. And the ventilation amount is reduced and the loss is reduced.

The invention discloses a gas compressor high-altitude environment test adjusting device and a surge relief control method, and the device and the method are composed of a power drive system, a test gas compressor, an environment simulation cabin, an intake and exhaust pressure adjusting device, an intake and exhaust communication pipeline, an upper computer and the like. A working point is smoothly adjusted along an equal-rotating-speed characteristic line under the high-altitude simulation condition, and the air inlet pressure is kept basically constant; in combination with multi-algorithm surge automatic judgment based on static pressure pulsation, opening coupling adjustment of a rapid surge relieving valve and an intake and exhaust pressure auxiliary adjusting valve, and intake and exhaust self-circulation instability protection under an air exhaust fault working condition, the gas compressor can rapidly and stably retreat from a surge area when approaching or entering a surge and air exhaust system abnormally; axial force violent change and exhaust side overpressure are avoided, data reliability and operation safety of the high-altitude environment gas compressor test are remarkably improved, and good engineering application value is achieved.

The application provides a control method, a compressor and an air conditioning system. The control method comprises the following steps: constructing a rectangular coordinate system according to the relationship between the operating frequency and the operating pressure ratio of the compressor; the horizontal coordinate of the coordinate system represents the operating pressure ratio of the compressor, and the vertical coordinate of the coordinate system represents the operating frequency of the compressor; wherein the operating pressure ratio is the ratio of the condensing pressure to the evaporating pressure of the unit to which the compressor belongs; obtaining the surge line of the compressor on the coordinate system; dividing the horizontal coordinate of the coordinate system into intervals; obtaining interval anti-surge lines according to different intervals respectively, fitting the interval anti-surge lines of different intervals to form an anti-surge control line; obtaining an operating area according to the anti-surge control line; wherein the operating area is an area above the anti-surge control line on the coordinate system; and controlling the operating frequency of the compressor according to the value in the operating area. The control method of the application solves the technical problem of poor anti-surge control precision of the compressor.