A compressor performance control method, device, apparatus and storage medium

Abstract

The application discloses a kind of compressor performance control method, device, equipment and storage medium.It is obtained that the working data of compressor in current cycle;Performance control quantity and compressor operating point decoupling information are determined based on the performance related parameters;Wherein, the compressor operating point decoupling information includes: compressor operating point is in decoupling zone and compressor operating point is in non-decoupling zone;According to the performance control quantity, the load state of the compressor is determined;Wherein, the load state includes the load state of ascending and the load state of descending;Based on the load state, the compressor operating point decoupling information, the anti-surge valve opening and the speed related parameters, the decoupling state of the compressor is determined;Based on the decoupling state and the performance control quantity, the speed module or anti-surge valve of the compressor is controlled.Based on decoupling state and performance control quantity, the speed module or anti-surge valve of the compressor is controlled, which can realize the stable control of compressor quickly.

Description

Technical Field

[0001] This invention relates to the field of compressor control technology, and in particular to a compressor performance control method, apparatus, device, and storage medium. Background Technology

[0002] A compressor is a mechanical device that compresses and increases the pressure of gas. Widely used in various fields, its performance has a decisive impact on the efficiency of the entire system and the economics of energy storage. Compressor performance control refers to adjusting or maintaining the compressor's operating point to meet the needs of the production unit based on its operating load. The main performance parameters of a compressor include flow rate, pressure, shaft power, and efficiency. Performance adjustment methods include adjustable inlet guide vanes, adjustable stationary vanes, and variable speed.

[0003] To meet the pressure, flow, and other parameter requirements of the aforementioned system, compressor control systems typically include a speed controller, an anti-surge controller, and a performance controller. However, current compressor control systems design the performance controller and speed controller as a cascade control relationship, while the performance controller and anti-surge controller are independent of each other. This leads to coupling between the performance control-speed control cascade regulation and the anti-surge control regulation during actual compressor operation, especially when the compressor's operating point is close to the anti-surge control line. Specifically, performance control may require a reduction in the unit's flow rate, while anti-surge control may require an increase. These two opposing controls cause the unit to enter an unstable state, making it prone to surge. Summary of the Invention

[0004] This invention provides a compressor performance control method, apparatus, device, and storage medium, which can achieve rapid and stable control of the compressor.

[0005] In a first aspect, embodiments of the present invention provide a compressor performance control method, comprising:

[0006] Acquire the compressor's operating data for the current cycle; wherein, the operating data includes performance-related parameters, anti-surge valve opening degree, and speed regulation-related parameters;

[0007] Based on the aforementioned performance-related parameters, performance control quantities and compressor operating point decoupling information are determined; wherein, the compressor operating point decoupling information includes: the compressor operating point being in the decoupling region and the compressor operating point being in the non-decoupling region;

[0008] The load state of the compressor is determined based on the performance control quantity; wherein, the load state includes an increased load state and a decreased load state;

[0009] The decoupling state of the compressor is determined based on the load status, the compressor operating point decoupling information, the anti-surge valve opening degree, and the speed regulation related parameters.

[0010] The speed control module or anti-surge valve of the compressor is controlled based on the decoupling state and the performance control quantity.

[0011] Secondly, embodiments of the present invention also provide a compressor performance control device, comprising:

[0012] The working data acquisition module is used to acquire the compressor's working data in the current cycle; wherein, the working data includes performance-related parameters, anti-surge valve opening degree, and speed regulation-related parameters;

[0013] The performance control quantity and decoupling information determination module is used to determine the performance control quantity and compressor operating point decoupling information based on the performance-related parameters; wherein, the compressor operating point decoupling information includes: the compressor operating point is in the decoupling region and the compressor operating point is in the non-decoupling region;

[0014] A load status determination module is used to determine the load status of the compressor based on the performance control quantity; wherein, the load status includes an increasing load status and a decreasing load status;

[0015] The decoupling state determination module is used to determine the decoupling state of the compressor based on the load state, the compressor operating point decoupling information, the anti-surge valve opening degree, and the speed regulation related parameters.

[0016] The control module is used to control the speed control module or anti-surge valve of the compressor based on the decoupling state and the performance control quantity.

[0017] Thirdly, embodiments of the present invention also provide an electronic device, the electronic device comprising:

[0018] At least one processor; and

[0019] A memory communicatively connected to the at least one processor; wherein,

[0020] The memory stores a computer program that can be executed by the at least one processor, which enables the at least one processor to perform the compressor performance control method according to the embodiments of the present invention.

[0021] Fourthly, embodiments of the present invention also provide a computer-readable storage medium storing computer instructions, which are used to cause a processor to execute and implement the compressor performance control method described in the embodiments of the present invention.

[0022] This invention discloses a compressor performance control method, apparatus, device, and storage medium. The method involves acquiring compressor operating data for the current cycle, including performance-related parameters, anti-surge valve opening degree, and speed control-related parameters. Based on these performance-related parameters, performance control quantities and compressor operating point decoupling information are determined. The compressor operating point decoupling information includes whether the compressor operating point is in the decoupling zone or the non-decoupling zone. The compressor load state is determined based on the performance control quantities, including load increase and load decrease states. The compressor decoupling state is determined based on the load state, compressor operating point decoupling information, anti-surge valve opening degree, and speed control-related parameters. The compressor speed control module or anti-surge valve is controlled based on the decoupling state and performance control quantities. Controlling the compressor speed control module or anti-surge valve based on the decoupling state and performance control quantities enables rapid and stable control of the compressor. Attached Figure Description

[0023] Figure 1 This is a flowchart of a compressor performance control method according to Embodiment 1 of the present invention;

[0024] Figure 2 This is an example diagram illustrating how to determine compressor operating point decoupling information according to Embodiment 1 of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of a compressor performance control device according to Embodiment 2 of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of an electronic device according to Embodiment 3 of the present invention. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0028] Example 1

[0029] Figure 1 This is a flowchart of a compressor performance control method provided in Embodiment 1 of the present invention. This embodiment is applicable to situations involving compressor control. The method can be executed by a compressor performance control device, which can be implemented in software and / or hardware, optionally through an electronic device, such as a mobile terminal, PC, or server. Specifically, it includes the following steps:

[0030] S110: Obtain the compressor's operating data for the current cycle.

[0031] The operating data includes performance-related parameters, anti-surge valve opening degree, and speed-related parameters. Performance-related parameters may include at least one of the following: inlet temperature, outlet temperature, inlet pressure, outlet pressure, and flow meter differential pressure. Speed-related parameters may be any one of the following: rotational speed, variable inlet guide vane angle, or variable stationary vane angle. If the compressor's speed control method is rotational speed, then the speed-related parameter is rotational speed; if the compressor's speed control method is variable inlet guide vane angle, then the speed-related parameter is variable inlet guide vane angle; if the compressor's speed control method is variable stationary vane angle, then the speed-related parameter is variable stationary vane angle.

[0032] In this embodiment, performance-related parameters can be obtained through temperature sensors, pressure sensors, and flow meters installed at the inlet and outlet. The anti-surge valve opening degree can be obtained by directly reading the anti-surge valve opening degree signal, and speed regulation-related parameters can be obtained by collecting speed regulation-related signals from the speed regulation module.

[0033] S120 determines performance control quantities and compressor operating point decoupling information based on performance-related parameters.

[0034] The performance control variable is used to control the speed control module and anti-surge valve in the compressor. The performance control variable is determined by the difference between the actual performance energy and the target performance energy.

[0035] Specifically, the method for determining performance control quantities based on performance-related parameters can be: determining the actual energy based on performance-related parameters; and determining the performance control quantity based on the difference between the actual energy and the target energy.

[0036] Among them, performance energy is characterized by any of the following: volumetric flow rate, mass flow rate, simplified flow rate, equivalent mass flow rate, pressure difference, inlet pressure, outlet pressure, pressure ratio, and simplified pressure head.

[0037] In this embodiment, if performance energy is characterized by volumetric flow rate, then the formula for calculating actual performance energy can be expressed as: If performance energy is characterized by mass flow rate, then the formula for calculating actual performance energy can be expressed as: In the two formulas above, parameter d represents the orifice plate inner diameter under operating conditions; parameter D represents the upstream and downstream pipe inner diameters under operating conditions; parameter ΔP represents the orifice plate pressure difference; parameter ρ represents the fluid density under operating conditions (which can be calculated from the inlet and outlet temperatures and pressures); parameter C represents the discharge coefficient; and parameter ε represents the expansion coefficient. If performance is characterized by simplified flow rate, then the formula for calculating actual performance parameters can be expressed as: Wherein, ΔP s For pressure difference, P sThe inlet pressure is the pressure at the outlet. The equivalent mass flow rate can be obtained by adjusting the mass flow rate to standard operating conditions or specified conditions. The pressure difference is the difference between the outlet pressure and the inlet pressure. The pressure ratio is the ratio between the outlet pressure and the inlet pressure. If performance energy is represented by a simplified pressure head, then the formula for calculating the actual performance energy can be expressed as: Where Rc is the pressure ratio and σ is the exponential coefficient.

[0038] The target energy is pre-set and can be represented as PIC. SP The performance control quantity can be determined based on the difference between the actual energy and the target energy by using the PIC control principle. Specifically, it can be represented as: PIC OUT (n) = x * F1(x) * ΔPIC, where x = PIC SP -PIC PV ΔPI is the gain coefficient for the current cycle, F1(x) is the proportional correction coefficient, and PIC OUT (n) represents the performance control quantity obtained in the current cycle.

[0039] The compressor operating point decoupling information includes whether the compressor operating point is in the decoupling region or in the non-decoupling region. This decoupling information characterizes the relative positional relationship between the compressor operating point and the decoupling control line LDL. The decoupling control line LDL can be obtained by offsetting the anti-surge control line SCL by a certain margin b, and the anti-surge control line SCL is obtained by offsetting the surge line SLL by a certain margin. The surge line, anti-surge control line, and decoupling control line can all be referred to as the compressor's performance curve. This curve can be plotted in a pre-created performance control coordinate system, where the quantities represented by the horizontal and vertical axes can be pre-defined. For example, this performance control coordinate system can represent any relationship that characterizes the compressor's characteristics, such as the relationship between volumetric flow rate and pressure ratio, the relationship between mass flow rate and pressure ratio, or the simplified relationship between flow rate and pressure ratio. The compressor operating point position information can be represented by coordinates in this performance control coordinate system. Assuming the performance control coordinate system characterizes the simplified relationship between flow rate and pressure ratio, the horizontal axis of the compressor operating point represents the simplified flow rate of the current cycle, expressed as: The vertical axis represents the pressure ratio for the current cycle, expressed as: ΔP s Pressure difference; P s Due to import pressure, P d This is due to export pressure.

[0040] Specifically, the method for determining the compressor operating point decoupling information based on performance-related parameters can be as follows: obtaining the relative positional relationship between the compressor anti-surge control line and the decoupling control line as the first relative positional relationship; determining the compressor operating point position information based on performance-related parameters; determining the relative positional relationship between the compressor operating point and the anti-surge control line based on the compressor operating point position information as the second relative positional relationship; and determining the compressor operating point decoupling information based on the first relative positional relationship and the second relative positional relationship.

[0041] The relative positional relationship between the compressor anti-surge control line and the decoupling control line can be represented by the offset margin of the decoupling control line relative to the anti-surge control line. This offset margin can be the offset margin along the horizontal axis, the offset margin along the vertical axis, or the offset margin along the slope. The position K of the decoupling control line in the performance control coordinate system is... LDL It can be represented as: K LDL =K SCL +b, where K SCL To indicate the position of the surge control line in the performance control coordinate system, b represents the offset margin.

[0042] One method for determining the compressor operating point location information based on performance-related parameters is to calculate the compressor operating point location information according to the quantities represented by the horizontal and vertical coordinates of the performance control coordinate system. Assuming the control coordinate system represents the simplified relationship between flow rate and pressure ratio, the horizontal coordinate of the compressor operating point is the simplified flow rate for the current cycle, expressed as: The vertical axis represents the pressure ratio for the current cycle, expressed as: ΔP s Pressure difference; P s Due to import pressure, P d This is due to export pressure.

[0043] The relative positional relationship between the compressor operating point and the anti-surge control line can be represented by the ratio of the x-coordinate of the compressor operating point to the x-coordinate of the corresponding point on the anti-surge control line. The corresponding point on the anti-surge control line can be understood as a point on the anti-surge control line with the same y-coordinate as the compressor operating point. Alternatively, the relative positional relationship between the compressor operating point and the anti-surge control line can be represented by the ratio of the x-coordinate of the compressor operating point to the y-coordinate of the corresponding point on the anti-surge control line. The corresponding point on the anti-surge control line can be understood as a point on the anti-surge control line with the same x-coordinate as the compressor operating point. Alternatively, the relative positional relationship between the compressor operating point and the anti-surge control line can be represented by the ratio between the x-coordinate and y-coordinate of the compressor operating point and the ratio between the x-coordinate and y-coordinate of the corresponding point on the anti-surge control line. The corresponding point on the anti-surge control line can be understood as a point on the anti-surge control line with the same x-coordinate or y-coordinate as the compressor operating point. For example, assuming it is represented by the ratio of the x-coordinate of the compressor operating point to the x-coordinate of the corresponding point on the anti-surge control line, the formula can be expressed as: X op The x-coordinate of the compressor's operating point, X SCL Let Q be the x-coordinate of the point corresponding to the surge control line. Assume that the x-coordinate in the performance control coordinate system is represented by the volumetric flow rate Q. Q OP Q is the volumetric flow rate of the compressor at its operating point in the current cycle. SCL To prevent surge, the volumetric flow rate at the corresponding point on the control line.

[0044] In this embodiment, determining the compressor operating point decoupling information based on the first and second relative positional relationships can be understood as: determining the relative positions of the compressor operating point and the decoupling control line in the performance control coordinate system based on the first and second relative positional relationships. Specifically, the method for determining the compressor operating point decoupling information based on the first and second relative positional relationships can be: when the relative positional relationship between the compressor anti-surge control line and the decoupling control line is represented by the offset margin of the decoupling control line relative to the anti-surge control line along the horizontal axis, if K OP <K LDL Then the compressor operating point is in the decoupling region, if K OP >K LDL The compressor operating point is then in the non-decoupled region. For example, Figure 2 This is an example diagram illustrating the determination of compressor operating point decoupling information in this embodiment, such as... Figure 2 As shown, if the compressor operating point falls in the area between the anti-surge control line SCL and the decoupling control line LDL, the compressor operating point is in the decoupling zone; if the compressor operating point falls in the area to the right of the decoupling control line LDL, the compressor operating point is in the non-decoupling zone.

[0045] S130 determines the compressor's load status based on performance control parameters.

[0046] The load state includes increasing load state and decreasing load state. Increasing load can be understood as the process of the compressor gradually increasing its output power during operation, while decreasing load can be understood as the process of the compressor gradually decreasing its output power during operation.

[0047] Specifically, the method for determining the compressor load state based on the performance control quantity can be as follows: if the performance control quantity is greater than 0, the compressor is in an increased load state; if the performance control quantity is less than 0, the compressor is in a reduced load state.

[0048] S140 determines the decoupling state of the compressor based on load status, compressor operating point decoupling information, anti-surge valve opening degree, and speed regulation related parameters.

[0049] The decoupling state of the compressor includes both the compressor being in a decoupling state and the compressor being in a non-decoupling state.

[0050] Specifically, the decoupling state of the compressor can be determined based on load status, compressor operating point decoupling information, anti-surge valve opening, and speed regulation related parameters as follows: When the compressor is under increased load, if the compressor operating point is in the decoupling zone, the compressor is in a non-decoupling state; if the compressor operating point is in the non-decoupling zone and the anti-surge valve is not fully closed, the compressor is in a decoupling state; if the compressor operating point is in the non-decoupling zone and the anti-surge valve is fully closed, the compressor is in a non-decoupling state. Similarly, when the compressor is under increased load, if the compressor operating point is in the decoupling zone, the compressor is in a decoupling state; if the compressor operating point is in the non-decoupling zone and the compressor's speed regulation related parameters have not reached their minimum adjustable values, the compressor is in a non-decoupling state; if the compressor operating point is in the non-decoupling zone and the compressor's speed regulation related parameters have reached their minimum adjustable values, the compressor is in a decoupling state.

[0051] The minimum adjustable value can be understood as the minimum achievable value preset for speed-related parameters. Specifically, if the compressor's speed-related parameters have not reached the minimum adjustable value, it can be understood as the compressor's speed, variable inlet guide vane angle, or variable stationary vane angle for the current cycle not reaching the preset minimum value. Conversely, if the compressor's speed-related parameters have reached the minimum adjustable value, it can be understood as the compressor's speed, variable inlet guide vane angle, or variable stationary vane angle for the current cycle reaching the preset minimum value.

[0052] In this embodiment, when the compressor is under increased load, if the compressor's operating point is in the decoupled region, the compressor is in a non-decoupled state regardless of whether the anti-surge valve is fully closed or not. If the compressor's operating point is in the non-decoupled region, the opening degree of the anti-surge valve needs to be considered to determine whether the compressor is in a decoupled or non-decoupled state. When the compressor is under decreased load, if the compressor's operating point is in the decoupled region, the compressor is in a decoupled state regardless of the compressor's speed control parameters. If the compressor's operating point is in the non-decoupled region, the value of the compressor's speed control parameters needs to be considered to determine whether the compressor is in a decoupled or non-decoupled state.

[0053] S150 controls the compressor's speed control module or anti-surge valve based on the decoupling state and performance control quantities.

[0054] Among them, the decoupling state determines whether the speed control module or the anti-surge valve is controlled, and the performance control quantity determines the amount of control on the speed control module or the anti-surge valve.

[0055] In this embodiment, the method of controlling the compressor speed control module or anti-surge valve based on the decoupling state and performance control quantity can be as follows: if the compressor is in a non-decoupling state, the compressor speed control module is controlled based on the performance control quantity; if the compressor is in a decoupling state, the compressor anti-surge valve is controlled based on the performance control quantity.

[0056] Specifically, if the compressor is in a non-decoupled state, the opening of the anti-surge valve remains unchanged, and the speed control module of the compressor is controlled only based on the performance control quantity. If the compressor is in a decoupled state, the output value of the speed control module remains unchanged, and the anti-surge valve of the compressor is controlled only based on the performance control quantity.

[0057] Optionally, the speed control module of the compressor can be controlled based on the performance control quantity as follows: determine the speed control decoupling quantity based on the first decoupling coefficient and the performance control quantity; obtain the speed control quantity or speed control related parameters of the previous cycle; determine the speed control quantity of the current cycle based on the speed control quantity or the speed control related parameters and the speed control decoupling quantity of the previous cycle; and control the speed control module based on the speed control quantity of the current cycle.

[0058] The first decoupling coefficient C1 can be preset. The speed regulation decoupling amount can be determined based on the first decoupling coefficient and the performance control quantity by multiplying the first decoupling coefficient by the performance control quantity to obtain the speed regulation decoupling amount. The formula can be expressed as: LDC SIC =PIC OUT *C1, where LDC SIC For speed regulation decoupling, PIC OUT C1 is the first decoupling coefficient and represents the performance control variable.

[0059] In this embodiment, if the current cycle is the first cycle, the speed regulation related parameter SIC is obtained, and SIC is normalized according to the following formula: Wherein, SIC represents the collected speed regulation related parameters (speed, variable inlet guide vane angle, or variable stationary vane angle), SIC PV The normalized values ​​of speed regulation related parameters, SIC MAX The maximum adjustable value for speed regulation related parameters (speed, variable inlet guide vane angle, variable stationary vane angle); SIC MIN This refers to the minimum adjustable value of the speed regulation-related parameters (variable speed, variable inlet guide vane angle, and variable stator vane angle). Correspondingly, the method for determining the speed regulation control quantity for the current cycle using the speed regulation-related parameters and the speed regulation decoupling quantity can be as follows: the normalized speed regulation-related parameters and the speed regulation decoupling quantity are summed to obtain the speed regulation control quantity. The formula can be expressed as: SIC OP (n)=LDC SIC (n)+SIC pv SIC OP (n) represents the speed control quantity for the current cycle, LDC. SIC (n) represents the speed regulation decoupling amount for the current cycle.

[0060] In this embodiment, if the current cycle is not the first cycle, then the speed control quantity SIC of the previous cycle is obtained. OP (n-1). The method for determining the speed control quantity of the current cycle based on the speed control quantity of the previous cycle and the speed decoupling quantity of the current cycle can be as follows: The speed control quantity of the previous cycle and the speed decoupling quantity of the current cycle are accumulated to obtain the speed control quantity of the current cycle. The formula can be expressed as: SIC OP (n)=LDC SIC (n)+SIC OP (n-1), where SIC OP (n) represents the speed control quantity for the current cycle, LDC. SIC (n) represents the speed decoupling quantity for the current cycle, SIC OP (n-1) represents the speed control quantity of the previous cycle.

[0061] In this embodiment, the process of controlling the speed control module based on the speed control quantity of the current cycle can be as follows: First, the speed control quantity of the current cycle is converted into the final instruction value input to the speed control module according to the following formula: Finally, the speed control module is controlled based on the final command value. Among them, SIC OUT (n) represents the final command value of the speed control module (speed, variable inlet guide vane angle, variable stator vane angle); SIC OP (n) represents the speed control quantity for the current cycle, SIC MAXThe maximum adjustable value for speed regulation related parameters (speed, variable inlet guide vane angle, variable stationary vane angle); SIC MIN This refers to the minimum adjustable value of speed regulation-related parameters (speed, variable inlet guide vane angle, variable stationary vane angle).

[0062] Optionally, the method for controlling the compressor's anti-surge valve based on the performance control quantity can be as follows: determine the anti-surge decoupling quantity based on the second decoupling coefficient and the performance control quantity; obtain the anti-surge control quantity for the current cycle; determine the target anti-surge quantity based on the anti-surge control quantity and the anti-surge decoupling quantity; and control the anti-surge valve based on the target anti-surge quantity.

[0063] The second decoupling coefficient C2 can be preset. The method for determining the anti-surge decoupling amount based on the second decoupling coefficient and the performance control amount can be: multiplying the second decoupling coefficient by the performance control amount to obtain the anti-surge control amount. The formula can be expressed as: LDC ASC =PIC OUT *C2, where LDC ASC To prevent suffocation decoupling, PIC OUT C2 is the performance control variable, and C2 is the second decoupling coefficient. The anti-surge control variable for the current cycle can be determined by the anti-surge control module installed in the compressor system based on a certain anti-surge principle; the working principle of the anti-surge control module is not limited here. Specifically, the method for determining the target anti-surge variable based on the anti-surge control variable and the anti-surge decoupling variable can be: summing the anti-surge control variable and the anti-surge decoupling variable to obtain the target anti-surge variable. The formula can be: ASC OUT (n)=LDC ASC (n)+ASC OP (n), where ASC OP (n) represents the current period's asthma control dose, LDC. ASC (n) represents the anti-surge decoupling value for the current cycle. Finally, the opening degree of the anti-surge valve is controlled based on the determined target anti-surge value.

[0064] The technical solution of this embodiment acquires the compressor's operating data in the current cycle. This operating data includes performance-related parameters, anti-surge valve opening degree, and speed regulation-related parameters. Based on the performance-related parameters, it determines performance control quantities and compressor operating point decoupling information. The compressor operating point decoupling information includes whether the compressor operating point is in the decoupling zone or the non-decoupling zone. It determines the compressor's load state based on the performance control quantities, including load increase and load decrease states. Based on the load state, compressor operating point decoupling information, anti-surge valve opening degree, and speed regulation-related parameters, it determines the compressor's decoupling state. Based on the decoupling state and performance control quantities, it controls the compressor's speed regulation module or anti-surge valve. Controlling the compressor's speed regulation module or anti-surge valve based on the decoupling state and performance control quantities enables rapid and stable control of the compressor. This solves the coupling problem between performance control-speed control cascade regulation and anti-surge control in the compressor control system, thereby achieving rapid and stable compressor control.

[0065] Example 2

[0066] Figure 3 This is a schematic diagram of the structure of a compressor performance control device provided in Embodiment 2 of the present invention, as shown below. Figure 3 As shown, the device includes:

[0067] The working data acquisition module 210 is used to acquire the working data of the compressor in the current cycle; wherein, the working data includes performance-related parameters, anti-surge valve opening degree and speed regulation-related parameters;

[0068] The performance control quantity and decoupling information determination module 220 is used to determine the performance control quantity and compressor operating point decoupling information based on the performance-related parameters; wherein, the compressor operating point decoupling information includes: the compressor operating point is in the decoupling region and the compressor operating point is in the non-decoupling region;

[0069] The load status determination module 230 is used to determine the load status of the compressor based on the performance control quantity; wherein, the load status includes an increasing load status and a decreasing load status;

[0070] The decoupling state determination module 240 is used to determine the decoupling state of the compressor based on the load state, the compressor operating point decoupling information, the anti-surge valve opening degree, and the speed regulation related parameters.

[0071] The control module 250 is used to control the speed control module or anti-surge valve of the compressor based on the decoupling state and the performance control quantity.

[0072] Optionally, the performance control quantity and decoupling information determination module 220 is also used for:

[0073] The actual performance energy is determined based on the aforementioned performance-related parameters; wherein, the performance-related parameters include at least one of the following: inlet temperature, outlet temperature, inlet pressure, outlet pressure, and flow meter differential pressure; the performance energy is characterized by any one of the following: volumetric flow rate, mass flow rate, simplified flow rate, equivalent mass flow rate, differential pressure, inlet pressure, outlet pressure, pressure ratio, and simplified pressure head;

[0074] The performance control quantity is determined based on the difference between the actual energy and the target energy.

[0075] Optionally, the performance control quantity and decoupling information determination module 220 is also used for:

[0076] Obtain the relative positional relationship between the compressor anti-surge control line and the decoupling control line, and use it as the first relative positional relationship;

[0077] The compressor operating point location information is determined based on the aforementioned performance-related parameters;

[0078] The relative positional relationship between the compressor operating point and the anti-surge control line is determined based on the compressor operating point position information, and is used as the second relative positional relationship;

[0079] The compressor operating point decoupling information is determined based on the first relative position relationship and the second relative position relationship.

[0080] Optionally, the decoupling state determination module 240 is also used for:

[0081] When the compressor is under increased load, if the compressor operating point is in the decoupling zone, the compressor is in a non-decoupling state; if the compressor operating point is in the non-decoupling zone and the anti-surge valve is not fully closed, the compressor is in a decoupling state; if the compressor operating point is in the non-decoupling zone and the anti-surge valve is fully closed, the compressor is in a non-decoupling state.

[0082] When the compressor is under increased load, if the compressor operating point is in the decoupling zone, the compressor is in a decoupling state; if the compressor operating point is in the non-decoupling zone and the compressor speed regulation related parameters have not reached the minimum adjustable value, the compressor is in a non-decoupling state; if the compressor operating point is in the non-decoupling zone and the compressor speed regulation related parameters have reached the minimum adjustable value, the compressor is in a decoupling state.

[0083] Optionally, the control module 250 is also used for:

[0084] If the compressor is in a non-decoupled state, the speed control module of the compressor is controlled based on the performance control quantity;

[0085] If the compressor is in a decoupled state, the anti-surge valve of the compressor is controlled based on the performance control quantity.

[0086] Optionally, the control module 250 is also used for:

[0087] The speed regulation decoupling amount is determined based on the first decoupling coefficient and the performance control amount;

[0088] Obtain the speed control quantity or speed control related parameters from the previous cycle;

[0089] The speed control quantity for the current cycle is determined based on the speed control quantity of the previous cycle or the speed control related parameters and the speed decoupling quantity.

[0090] The speed control module is controlled based on the speed control quantity of the current cycle.

[0091] Optionally, the control module 250 is also used for:

[0092] The anti-surge decoupling amount is determined based on the second decoupling coefficient and the performance control amount;

[0093] Obtain the current asthma control dose for the current cycle;

[0094] The target asthma control amount is determined based on the asthma control decoupling amount;

[0095] The anti-surge valve is controlled based on the target anti-surge amount.

[0096] The above-described apparatus can execute the methods provided in all the foregoing embodiments of the present invention, and has the corresponding functional modules and beneficial effects for executing the above methods. Technical details not described in detail in this embodiment can be found in the methods provided in all the foregoing embodiments of the present invention.

[0097] Example 3

[0098] Figure 4 A schematic diagram of an electronic device 10, which can be used to implement embodiments of the present invention, is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components, connections and relationships between components, and their functions shown herein are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0099] like Figure 4As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 or a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer program stored in the ROM 12 or loaded from storage unit 18 into the RAM 13. The RAM 13 may also store various programs and data required for the operation of the electronic device 10. The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0100] Multiple components in electronic device 10 are connected to I / O interface 15, including: input unit 16, such as keyboard, mouse, etc.; output unit 17, such as various types of displays, speakers, etc.; storage unit 18, such as disk, optical disk, etc.; and communication unit 19, such as network card, modem, wireless transceiver, etc. Communication unit 19 allows electronic device 10 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0101] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as compressor performance control methods.

[0102] In some embodiments, the compressor performance control method may be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program may be loaded and / or installed on electronic device 10 via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the compressor performance control method described above may be performed. Alternatively, in other embodiments, processor 11 may be configured to perform the compressor performance control method by any other suitable means (e.g., by means of firmware).

[0103] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0104] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0105] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0106] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device for displaying information to the user (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor); and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0107] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or computing systems that include middleware components (e.g., application servers), or computing systems that include frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0108] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0109] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0110] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A compressor performance control method, characterized in that, include: Acquire the compressor's operating data for the current cycle; wherein, the operating data includes performance-related parameters, anti-surge valve opening degree, and speed regulation-related parameters; Based on the aforementioned performance-related parameters, performance control quantities and compressor operating point decoupling information are determined; wherein, the compressor operating point decoupling information includes: the compressor operating point being in the decoupling region and the compressor operating point being in the non-decoupling region; The load state of the compressor is determined based on the performance control quantity; wherein, the load state includes an increased load state and a decreased load state; The decoupling state of the compressor is determined based on the load status, the compressor operating point decoupling information, the anti-surge valve opening degree, and the speed regulation related parameters. The speed control module or anti-surge valve of the compressor is controlled based on the decoupling state and the performance control quantity. The determination of the compressor's decoupling state based on the load status, the compressor's operating point decoupling information, the anti-surge valve opening, and the speed regulation-related parameters includes: When the compressor is under increased load, if the compressor operating point is in the decoupling zone, the compressor is in a non-decoupling state; if the compressor operating point is in the non-decoupling zone and the anti-surge valve is not fully closed, the compressor is in a decoupling state; if the compressor operating point is in the non-decoupling zone and the anti-surge valve is fully closed, the compressor is in a non-decoupling state. When the compressor is in a load reduction state, if the compressor operating point is in the decoupling zone, the compressor is in a decoupling state; if the compressor operating point is in the non-decoupling zone and the compressor speed regulation related parameters have not reached the minimum adjustable value, the compressor is in a non-decoupling state; if the compressor operating point is in the non-decoupling zone and the compressor speed regulation related parameters have reached the minimum adjustable value, the compressor is in a decoupling state. The control of the compressor's speed regulation module or anti-surge valve based on the decoupling state and the performance control quantity includes: If the compressor is in a non-decoupled state, the speed control module of the compressor is controlled based on the performance control quantity; If the compressor is in a decoupled state, the anti-surge valve of the compressor is controlled based on the performance control quantity.

2. The method according to claim 1, characterized in that, Determining performance control quantities based on the aforementioned performance-related parameters includes: The actual energy is determined based on the performance-related parameters; wherein, the performance-related parameters include at least one of the following: inlet temperature, outlet temperature, inlet pressure, outlet pressure, and flow meter differential pressure; the actual energy is characterized by any one of the following: volumetric flow rate, mass flow rate, simplified flow rate, equivalent mass flow rate, differential pressure, inlet pressure, outlet pressure, pressure ratio, and simplified head; The performance control quantity is determined based on the difference between the actual energy and the target energy.

3. The method according to claim 1, characterized in that, Determining compressor operating point decoupling information based on the aforementioned performance-related parameters includes: Obtain the relative positional relationship between the compressor anti-surge control line and the decoupling control line, and use it as the first relative positional relationship; The compressor operating point location information is determined based on the aforementioned performance-related parameters; The relative positional relationship between the compressor operating point and the anti-surge control line is determined based on the compressor operating point position information, and is used as the second relative positional relationship; The compressor operating point decoupling information is determined based on the first relative position relationship and the second relative position relationship.

4. The method according to claim 1, characterized in that, Controlling the compressor's speed control module based on the performance control quantity includes: The speed regulation decoupling amount is determined based on the first decoupling coefficient and the performance control amount; Obtain the speed control quantity or speed control related parameters from the previous cycle; The speed control quantity for the current cycle is determined based on the speed control quantity of the previous cycle or the speed control related parameters and the speed decoupling quantity. The speed control module is controlled based on the speed control quantity of the current cycle.

5. The method according to claim 1, characterized in that, Controlling the anti-surge valve of the compressor based on the performance control quantity includes: The anti-surge decoupling amount is determined based on the second decoupling coefficient and the performance control amount; Obtain the current asthma control dose for the current cycle; The target asthma control amount is determined based on the asthma control decoupling amount; The anti-surge valve is controlled based on the target anti-surge amount.

6. A compressor performance control device, characterized in that, The method for performing the compressor performance control method according to any one of claims 1-5 includes: The working data acquisition module is used to acquire the compressor's working data in the current cycle; wherein, the working data includes performance-related parameters, anti-surge valve opening degree, and speed regulation-related parameters; The performance control quantity and decoupling information determination module is used to determine the performance control quantity and compressor operating point decoupling information based on the performance-related parameters; wherein, the compressor operating point decoupling information includes: the compressor operating point is in the decoupling region and the compressor operating point is in the non-decoupling region; A load status determination module is used to determine the load status of the compressor based on the performance control quantity; wherein, the load status includes an increasing load status and a decreasing load status; The decoupling state determination module is used to determine the decoupling state of the compressor based on the load state, the compressor operating point decoupling information, the anti-surge valve opening degree, and the speed regulation related parameters. The control module is used to control the speed control module or anti-surge valve of the compressor based on the decoupling state and the performance control quantity.

7. An electronic device, characterized in that, The electronic device includes: At least one processor; and A memory communicatively connected to the at least one processor; wherein, The memory stores a computer program that can be executed by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the compressor performance control method according to any one of claims 1-5.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that cause a processor to execute the compressor performance control method according to any one of claims 1-5.

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