Control method and device of turbine unit valve, control unit and medium

Abstract

The invention discloses a turbine unit valve control method and device, a control unit and a medium, and the method comprises the steps: obtaining a working operation state event of a turbine unit, and determining a flow control parameter of the turbine unit when the working operation state event is triggered; determining a flow distribution output parameter corresponding to the regulating valve and a flow distribution output parameter corresponding to each gulp valve according to the flow control parameter and the valve flow distribution coefficient; determining a valve control output value of the regulating valve according to the valve flow characteristic relation of the regulating valve and the flow distribution output parameter corresponding to the regulating valve; determining a valve control output value of each gulp valve according to the valve flow characteristic relationship of each gulp valve and the flow distribution output parameter corresponding to each gulp valve; controlling the valve opening of the regulating valve according to the valve control output value of the regulating valve; and controlling the valve opening of the corresponding gulp valve according to the valve control output value of each gulp valve. According to the invention, automatic control of the turbine unit valve is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of compressed air energy storage, and in particular to a control method, device, control unit and medium for a turbine unit valve. Background Art

[0002] Compressed air energy storage releases high-pressure gas in the gas storage device during the energy release stage. The gas is heated by the heat exchanger and then transported to the turbine unit, so that the turbine unit drives the generator to generate electricity. In this process, the release of gas from the gas storage device will cause its own pressure to gradually decrease, resulting in a decrease in the operating power of the turbine unit. At present, in order to ensure the power output of the turbine unit during stable sliding pressure operation, the turbine throttling plus air supplementation operation mode is usually used to control the stable operation of the turbine unit.

[0003] However, the operation mode of turbine throttling plus air supplementation is based on the power of the turbine unit and the state of the valve to comprehensively judge and control the turbine unit during operation. In this operation mode, when the parameters of the compressor air change and cause the power generation of the turbine unit to exceed the limit, the control device will force all regulating valves and air supplementation valves to close synchronously to the normal range, and after all valves are closed to the normal range, the valves will remain stationary. This will lead to a decrease in the subsequent operation efficiency of the turbine unit. Summary of the invention

[0004] The present invention provides a control method, device, control unit and medium for a turbine unit valve, which realizes the individual control of the regulating valve according to different working operation status events when the turbine unit is in operation, and the individual control of each air supply valve, thereby realizing automatic control of the turbine unit's workload and flow rate, and further realizing the subsequent stable operation of the turbine unit, and improving the operating efficiency of the turbine unit.

[0005] According to one aspect of the present invention, a control method for a turbine unit valve is provided. The compressed air energy storage system comprises a turbine unit, an air storage device, a regulating valve, an air supply valve and a valve control unit. The turbine unit is connected to the air storage device through a main pipeline, and the regulating valve is arranged between the turbine unit and the air storage device. The turbine unit comprises at least three turbine expanders connected in series. The turbine expander comprises at least a medium-pressure section turbine and a high-pressure section turbine according to the rated working pressure. One medium-pressure section turbine and one high-pressure section turbine each correspond to one air supply valve, and the air supply valve is connected between the corresponding turbine expander and the air storage device through a branch pipeline. The valve control unit is electrically connected to each turbine expander, the air storage device, the regulating valve and each air supply valve respectively. The method is applied to the valve control unit, and the method comprises:

[0006] Acquire a working operation status event of the turbine unit, and determine a flow control parameter of the turbine unit when the working operation status event is triggered;

[0007] According to the flow control parameter and the valve flow distribution coefficient, the flow distribution output parameter corresponding to the regulating valve and the flow distribution output parameter corresponding to each air supply valve are determined;

[0008] Determine the valve control output value of the regulating valve according to the valve flow characteristic relationship of the regulating valve and the flow distribution output parameter corresponding to the regulating valve; and determine the valve control output value of each air supply valve according to the valve flow characteristic relationship of each air supply valve and the flow distribution output parameter corresponding to each air supply valve;

[0009] The valve opening of the regulating valve is controlled according to the valve control output value of the regulating valve; and the valve opening of each air supply valve is controlled according to the valve control output value of the corresponding air supply valve.

[0010] According to another aspect of the present invention, there is provided a control device for a turbine unit valve, the device comprising:

[0011] An acquisition module, used for acquiring a working operation status event of the turbine unit, and determining a flow control parameter of the turbine unit when the working operation status event is triggered;

[0012] A first determination module is used to determine the flow distribution output parameter corresponding to the regulating valve and the flow distribution output parameter corresponding to each air supply valve according to the flow control parameter and the valve flow distribution coefficient;

[0013] A second determination module is used to determine the valve control output value of the regulating valve according to the valve flow characteristic relationship of the regulating valve and the flow distribution output parameter corresponding to the regulating valve; and determine the valve control output value of each air supply valve according to the valve flow characteristic relationship of each air supply valve and the flow distribution output parameter corresponding to each air supply valve;

[0014] The control module is used to control the valve opening of the regulating valve according to the valve control output value of the regulating valve; and to control the valve opening of the corresponding air supply valve according to the valve control output value of each air supply valve.

[0015] According to another aspect of the present invention, a valve control unit is provided, the valve control unit comprising:

[0016] at least one processor; and

[0017] a memory communicatively connected to the at least one processor; wherein,

[0018] The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the control method of the turbine unit valve described in any embodiment of the present invention.

[0019] According to another aspect of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the control method of a turbine unit valve described in any embodiment of the present invention when executed.

[0020] The control method of the turbine unit valve provided by the embodiment of the present invention obtains the working state event of the turbine unit, and determines the flow control parameters of the turbine unit when the working state event is triggered; determines the flow distribution output parameters corresponding to the regulating valve and the flow distribution output parameters corresponding to each air supply valve according to the flow control parameters and the valve flow distribution coefficient; determines the valve control output value of the regulating valve according to the valve flow characteristic relationship of the regulating valve and the flow distribution output parameter corresponding to the regulating valve; and determines the valve control output value of each air supply valve according to the valve flow characteristic relationship of each air supply valve and the flow distribution output parameter corresponding to each air supply valve; controls the valve opening of the regulating valve according to the valve control output value of the regulating valve; and controls the valve opening of the corresponding air supply valve according to the valve control output value of each air supply valve. In the above technical scheme, on the one hand, the flow control parameters corresponding to the turbine unit in the working state are determined according to the working state event of the turbine unit, so as to determine the flow control parameters that should be met by the turbine unit under different working state events, and provides an important basis for determining how to control the operation of each valve later. On the other hand, the valve flow distribution coefficient is determined for each valve, and the flow distribution output parameter corresponding to the regulating valve and the flow distribution output parameter corresponding to each air supply valve are determined according to the valve flow distribution coefficient and flow control parameter of each valve, so as to reasonably distribute the required flow to each valve, and provide data support for determining the specific valve control output value of each valve later. Finally, the valve control output value of the regulating valve is determined by the valve flow characteristic relationship of the regulating valve and its corresponding flow distribution output parameter; and the valve control output value of each air supply valve is determined by the valve flow characteristic relationship of each air supply valve and its corresponding flow distribution output parameter, which solves the problem that when the turbine throttling and air supply operation mode is currently used, when encountering an event such as a power overlimit event of the turbine unit, the control device will force all regulating valves and air supply valves to be closed synchronously to the normal range, and all valves will remain stationary after closing to the normal range. This method realizes the individual control of the regulating valve and each air supply valve according to different working operation status events when the turbine unit is in operation, thereby realizing automatic control of the working load and flow of the turbine unit, thereby realizing the subsequent stable operation of the turbine unit and improving the operating efficiency of the turbine unit.

[0021] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 A flow chart of a method for controlling a turbine unit valve provided by an embodiment of the present invention;

[0024] Figure 2 An example diagram of the process structure of compressed air energy storage provided by an embodiment of the present invention;

[0025] Figure 3 A flow chart of another method for controlling a turbine unit valve provided by an embodiment of the present invention;

[0026] Figure 4 This is an example diagram of the flow distribution of the valve;

[0027] Figure 5 A schematic diagram of the structure of a control device for a turbine unit valve provided by an embodiment of the present invention;

[0028] Figure 6 A schematic diagram of the structure of a valve control unit provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0030] It should be noted that the terms "medium pressure section", "high pressure section", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0031] Figure 1 A flow chart of a control method for a turbine unit valve provided in an embodiment of the present invention. This embodiment can be applied to the situation where the opening of each valve is automatically controlled during the energy release stage of compressed air energy storage, thereby ensuring the stable operation of the turbine unit. This method can be executed by a control device for the turbine unit valve, which can be implemented in the form of hardware and / or software, and can be configured in a valve control unit. In this embodiment, the valve control unit can be an electronic device, such as a computer or a controller.

[0032] Before introducing the control method of the turbine unit valve provided by the present invention, the compressed air energy storage system involved in the present invention is briefly introduced. Figure 2 This is an example diagram of the process structure of compressed air energy storage provided by an embodiment of the present invention. Figure 2 As shown, a compressed air energy storage system may include: a low-pressure expansion machine 101, a medium-pressure expansion machine 102 and a high-pressure expansion machine 103 in a turbine unit, as well as a heat exchanger 20, a low main gate 301 corresponding to the low-pressure expansion machine, a medium main gate 302 corresponding to the medium-pressure expansion machine, a regulating valve (high-adjusting valve) 303 corresponding to the high-pressure expansion machine, a main air valve 40, an outlet shut-off valve 50, an air storage device 60, a heat storage tank 701, a cold storage tank 702, a two-stage air supply valve 801 and a one-stage air supply valve 802 (in an actual air energy storage system, there will be N-stage air supply valves, and only the two-stage air supply valve is shown here).

[0033] Among them, in the energy release stage, the air energy storage system will release the high-pressure gas in the gas storage device 60, which will be heated by the heat exchanger 20 and then transported to the turbine unit to drive the generator to generate electricity. In the actual operation process, the middle main door 302, the low main door 301 and the main air valve 40 are fully open. In addition, the turbine power and valve status of the turbine expansion unit are monitored in real time, and the valve opening is adjusted in real time according to the turbine power and valve status. However, when the parameter changes of the compressor air cause the turbine power to exceed the limit, the over-limit control will force all regulating valves and air supply valves to close synchronously. When the opening is closed to the normal range, the valve remains stationary, and the regulating valve and the air supply valve will be opened at the same time, which will lead to a decrease in turbine efficiency.

[0034] Continue to refer to Figure 1 .like Figure 1 As shown, the method includes:

[0035] S101. Acquire a working status event of a turbine unit, and determine a flow control parameter of the turbine unit when the working status event is triggered.

[0036] The working state events are different working state events of the turbine unit during operation, for example, pre-grid connection events of the turbine unit, post-grid connection events of the turbine unit, emergency tripping and shutdown events of the turbine unit, power over-limit events of the turbine unit, or manual operation events of the turbine unit by the staff.

[0037] Specifically, the triggering condition of the working state event is preset. After the turbine unit starts normal operation, the valve control unit monitors the working state data of the turbine unit in real time, and determines whether the current working state of the turbine unit triggers the triggering condition of the preset working state event according to the working state data. When the triggering condition of the working state event is triggered, the flow control parameter of the turbine unit corresponding to the working state event is determined.

[0038] For example, since one or more operating state events may be triggered during the operation of the turbine set, the operating state event with the highest priority can be selected as the target operating state event according to the priority order of the preset operating state events, and the flow control parameter of the turbine set corresponding to the target operating state event can be determined.

[0039] In this embodiment, the flow control parameters corresponding to the turbine unit in the working state are determined according to the working state event of the turbine unit, thereby realizing the determination of the flow control parameters that should be met by the turbine unit under different working state events, and providing an important basis for subsequently determining how to control the operation of each valve.

[0040] S102, determining a flow distribution output parameter corresponding to the regulating valve and a flow distribution output parameter corresponding to each air supply valve according to the flow control parameter and the valve flow distribution coefficient.

[0041] The valve flow distribution coefficient is the flow ratio coefficient allocated to each valve.

[0042] Specifically, during the operation of the turbine unit, the regulating valve between the high-pressure turbine and the gas storage device can be adjusted, and the corresponding air supply valves of the medium-pressure turbine and the high-pressure turbine can be adjusted. Therefore, the flow distribution output parameter corresponding to the regulating valve and the flow distribution output parameter corresponding to each air supply valve can be determined according to the determined flow control parameter and the valve flow distribution coefficient. Among them, since each valve has different positions and functions in the turbine unit, the flow control ability of the turbine unit when working is also different. Therefore, it is necessary to predetermine the flow distribution coefficient of each valve to reasonably determine the flow distribution output parameter allocated to each valve.

[0043] In this embodiment, the valve flow distribution coefficient is determined for each valve, and the flow distribution output parameters corresponding to the regulating valve and the flow distribution output parameters corresponding to each air supply valve are determined based on the valve flow distribution coefficient and the flow control parameters of each valve, thereby realizing the reasonable distribution of the required management flow to each valve, and providing data support for the subsequent determination of the specific valve control output value of each valve.

[0044] S103 . Determine a valve control output value of the regulating valve according to a valve flow characteristic relationship of the regulating valve and a flow distribution output parameter corresponding to the regulating valve.

[0045] The valve flow characteristic relationship is the relationship between the valve flow and the valve opening of each valve. In this embodiment, the valve flow characteristic relationship may be a functional relationship.

[0046] Specifically, the valve control output value of the regulating valve can be calculated according to the following formula:

[0047] VALVE OUT_303 =OP OUT_303 *F 303 (x CV );

[0048] Among them, VALVE OUT_303 OP is the valve control output value of the regulating valve. OUT_303 Assign output parameters to the flow rate of the control valve. 303 (x CV ) is the valve flow characteristic relationship of the regulating valve. CV " represents the valve opening of the regulating valve. "303" represents the regulating valve.

[0049] S104: Control the valve opening of the regulating valve according to the valve control output value of the regulating valve.

[0050] The opening degree refers to the degree of opening and closing.

[0051] Specifically, after the valve control output value of the regulating valve is calculated, the valve control unit can control the valve opening of the regulating valve according to the valve control output value of the regulating valve.

[0052] S105 , determining a valve control output value of each air supply valve according to the valve flow characteristic relationship of each air supply valve and the flow distribution output parameter corresponding to each air supply valve.

[0053] Specifically, the valve control output value of each air supply valve can be calculated according to the following formula:

[0054] VALVE OUT_80N =OP OUT_80N *F 80N (x N );

[0055] Among them, VALVE OUT_80N It is the valve control output value of the air supply valve. OUT_80N Output parameter for the flow distribution of the air supply valve. 80N (x N ) is the valve flow characteristic relationship of the air supply valve. N " represents the valve opening of the Nth section air supply valve. "80" represents the air supply valve, and "80N" represents the Nth section air supply valve.

[0056] S106 , controlling the valve opening of the corresponding air supply valve according to the valve control output value of each air supply valve.

[0057] Specifically, after the valve control output value of each air supply valve is calculated, the valve control unit may control the valve opening of the corresponding air supply valve according to the valve control output value of each air supply valve.

[0058] It is worth noting that S103-S104 and S105-S106 are parallel steps and can be executed simultaneously or sequentially.

[0059] In this embodiment, the valve control output value of the regulating valve is determined by the valve flow characteristic relationship of the regulating valve and its corresponding flow distribution output parameter; and the valve control output value of each air supply valve is determined by the valve flow characteristic relationship of each air supply valve and its corresponding flow distribution output parameter, which solves the problem that when the turbine throttling plus air supply operation mode is used, when encountering an event such as a power overlimit event of the turbine unit, the control device will force all regulating valves and air supply valves to close synchronously to the normal range, and all valves will remain stationary after closing to the normal range. This method realizes the individual control of the regulating valve according to different working operation status events when the turbine unit is in operation, and the individual control of each air supply valve, thereby realizing the automatic control of the workload and flow of the turbine unit, thereby realizing the subsequent stable operation of the turbine unit, and improving the operating efficiency of the turbine unit.

[0060] The control method of the turbine unit valve provided by the embodiment of the present invention obtains the working state event of the turbine unit, and determines the flow control parameters of the turbine unit when the working state event is triggered; determines the flow distribution output parameters corresponding to the regulating valve and the flow distribution output parameters corresponding to each air supply valve according to the flow control parameters and the valve flow distribution coefficient; determines the valve control output value of the regulating valve according to the valve flow characteristic relationship of the regulating valve and the flow distribution output parameter corresponding to the regulating valve; and determines the valve control output value of each air supply valve according to the valve flow characteristic relationship of each air supply valve and the flow distribution output parameter corresponding to each air supply valve; controls the valve opening of the regulating valve according to the valve control output value of the regulating valve; and controls the valve opening of the corresponding air supply valve according to the valve control output value of each air supply valve. In the above technical scheme, on the one hand, the flow control parameters corresponding to the turbine unit in the working state are determined according to the working state event of the turbine unit, so as to determine the flow control parameters that should be met by the turbine unit under different working state events, and provides an important basis for determining how to control the operation of each valve later. On the other hand, the valve flow distribution coefficient is determined for each valve, and the flow distribution output parameter corresponding to the regulating valve and the flow distribution output parameter corresponding to each air supply valve are determined according to the valve flow distribution coefficient and flow control parameter of each valve, so as to reasonably distribute the required flow to each valve, and provide data support for determining the specific valve control output value of each valve later. Finally, the valve control output value of the regulating valve is determined by the valve flow characteristic relationship of the regulating valve and its corresponding flow distribution output parameter; and the valve control output value of each air supply valve is determined by the valve flow characteristic relationship of each air supply valve and its corresponding flow distribution output parameter, which solves the problem that when the turbine throttling and air supply operation mode is currently used, when encountering an event such as a power overlimit event of the turbine unit, the control device will force all regulating valves and air supply valves to be closed synchronously to the normal range, and all valves will remain stationary after closing to the normal range. This method realizes the individual control of the regulating valve and each air supply valve according to different working operation status events when the turbine unit is in operation, thereby realizing automatic control of the working load and flow of the turbine unit, thereby realizing the subsequent stable operation of the turbine unit and improving the operating efficiency of the turbine unit.

[0061] Figure 3This is a flow chart of another method for controlling a turbine unit valve provided by an embodiment of the present invention. Based on the above embodiments, this embodiment provides detailed descriptions of the step of "determining the flow control parameters of the turbine unit when a working operation status event is triggered", the step before "determining the flow distribution output parameters corresponding to each air supply valve and the flow distribution output parameters corresponding to the regulating valve according to the flow control parameters and the valve flow distribution coefficient", the step of "determining the flow distribution output parameters corresponding to each air supply valve and the flow distribution output parameters corresponding to the regulating valve according to the flow control parameters and the valve flow distribution coefficient", and the step before "determining the valve control output value of each air supply valve according to the valve flow characteristic relationship of each air supply valve and the flow distribution output parameters corresponding to each air supply valve". Figure 3 As shown, the method includes:

[0062] S301. Obtain the operation status event of the turbine unit.

[0063] The working operation status events include pre-grid connection events of the turbine unit, post-grid connection events of the turbine unit, flow control events of the turbine unit and abnormal operation events of the turbine unit.

[0064] Specifically, events that may occur during the operation of the turbine unit may be classified in advance into the four working operation status events mentioned above.

[0065] Exemplarily, the flow control event of the turbine unit before grid connection is taken as the pre-grid connection event of the turbine unit. The flow control event of the power after grid connection of the turbine unit is taken as the post-grid connection event of the turbine unit. The event of the staff manually operating the turbine unit, such as manually inputting the parameter value of the flow adjustment into the hand operator, etc., is taken as the flow control event of the turbine unit. The shutdown event of the emergency trip system (ETS) of the turbine unit, the action event of the overspeed protection control unit (OPC) of the turbine unit, the frequency modulation mode event after the turbine unit is connected to the grid, the power over-limit event after the turbine unit is connected to the grid, etc., are taken as the abnormal operation event of the turbine unit.

[0066] Exemplarily, after the events that may occur during the operation of the turbine set are classified according to the above example, the working operation status events of the turbine set can be obtained and determined according to the operation status data of the turbine set.

[0067] S302: If it is determined that the operating state event is a pre-grid connection event of the turbine unit, a speed control output parameter is determined according to a control speed parameter of the turbine unit and a target control speed parameter.

[0068] Specifically, if it is determined according to the real-time monitored operation status data of the turbine unit that the current operation status event of the turbine unit is a pre-grid-connected rush flow control event, then the operation status event can be determined as a pre-grid-connected event of the turbine unit. And, the speed control output parameter is determined through incremental PID calculation based on the control speed parameter of the turbine unit and the target control speed parameter.

[0069] Exemplarily, the speed control output parameter is calculated as follows:

[0070]

[0071] OP SIC_OUT (n) = OP SIC_OUT (n-1)+ΔU(n);

[0072] Among them, OP SIC_OUT (n) is the output value of the speed PID of the current cycle, OP SIC_OUT (n-1) is the output value of the speed PID in the previous cycle, △U(n) ​​is the deviation increment in the current cycle, X P is the proportional coefficient of the incremental PID, e(n) is the PID control deviation of the current cycle. e(n-1) is the PID control deviation of the previous cycle. I is the integral time constant of the incremental PID, T S It is the sampling period of incremental PID.

[0073] S303: If it is determined that the operating state event is a post-grid connection event of the turbine unit, a power control output parameter is determined according to a control power parameter of the turbine unit and a target control power parameter.

[0074] Specifically, if it is determined according to the real-time monitored operation status data of the turbine unit that the current operation status event of the turbine unit is a flow control event of the power after grid connection, then the operation status event can be determined as a grid connection event of the turbine unit. And, the power control output parameter is determined through incremental PID calculation based on the control power parameter of the turbine unit and the target control power parameter.

[0075] Exemplarily, the calculation method of the power control output parameter is:

[0076]

[0077] OP PIC_OUT (n) = OP PIC_OUT (n-1)+ΔU(n);

[0078] Among them, OP PIC_OUT (n) is the output value of the power PID in the current cycle, OP PIC_OUT(n-1) is the output value of the power PID in the previous cycle, △U(n) ​​is the deviation increment in the current cycle, X P is the proportional coefficient of the incremental PID, e(n) is the PID control deviation of the current cycle. e(n-1) is the PID control deviation of the previous cycle. I is the integral time constant of the incremental PID, T S It is the sampling period of incremental PID.

[0079] S304: If it is determined that the operating state event is a flow control event of the turbine unit, a preset target flow control parameter is obtained.

[0080] Specifically, if it is monitored in real time that a worker performs manual operations on the turbine unit, such as manually inputting a parameter value for adjusting the flow rate into a hand operator, then the operation status event can be determined to be a flow rate control event of the turbine unit. At this time, the output value input by the worker can be directly obtained and used as the target flow rate control parameter.

[0081] S305: If it is determined that the working operation status event is an abnormal operation event of the turbine unit, then determine the flow protection output parameter of the turbine unit.

[0082] Specifically, the working status data of the turbine unit is monitored in real time. If events such as turbine unit ETS shutdown event, turbine unit OPC action event, frequency modulation mode event after turbine unit is connected to the grid, and power over-limit event after turbine unit is connected to the grid are detected, the flow protection output parameters of the turbine unit can be determined according to different events.

[0083] For example, if the turbine set ETS shutdown event is detected, the flow protection output parameter of the turbine set is 0. If the turbine set OPC action event is detected, the flow protection output parameter of the turbine set is 0.

[0084] If a frequency modulation event is detected after the turbine unit is connected to the grid, the flow protection output parameters of the turbine unit are determined according to the deviation value of the monitored frequency or speed, for example:

[0085] x = SIC PV -SIC LIM ;

[0086] ΔFPM=x*F1(x)*K1;

[0087] OP PRO_OUT (n) = OP OUT (n-1)+ΔFPM;

[0088] Among them, SIC PV is the speed detected, SIC LIMis the speed limit value after the turbine is connected to the grid, K1 is the first gain coefficient, F1(x) is the first proportional correction coefficient, △FPM is the deviation value of the primary frequency modulation control, OP OUT (n-1) is the flow control parameter of the previous cycle.

[0089] If a power overlimit event is detected after the turbine unit is connected to the grid, the flow protection output parameter can be determined according to the following formula:

[0090] x=POWER PV -POWER LIM ;

[0091] ΔPRO=x*F2(x)*K2;

[0092] OP PRO_OUT (n) = OP OUT (n-1)+ΔPRO;

[0093] Among them, POWER PV is the actual value of the generated power, POWER LIM is the limit value of the generated power, K2 is the second gain coefficient, F2(x) is the second proportional correction coefficient, △PRO is the deviation value of the power over-limit control, OP OUT It is the flow control parameter of the previous cycle.

[0094] It is worth noting that the x in the above-mentioned "a frequency modulation mode event occurred after the turbine unit was connected to the grid" and "a power over-limit event occurred after the turbine unit was connected to the grid" are the x corresponding to the corresponding events occurring in the turbine unit, and are not the same x.

[0095] It is worth noting that S302, S303, S304 and S305 are parallel steps. In this embodiment, the working running state event is at least one of S302, S303, S304 and S305.

[0096] S306: Determine the speed control output parameter, the power control output parameter, the target flow control parameter or the flow protection output parameter as the flow control parameter of the turbine unit.

[0097] Specifically, since one or more events may occur simultaneously during the operation of the turbine unit, it is necessary to determine the parameter corresponding to an event as the target working state event according to the priority of each event, and determine the parameter corresponding to the target working state event as the flow control parameter of the turbine unit. The specific steps are as follows:

[0098] (1) Obtain the priority order of the preset work running status events.

[0099] Specifically, the priority order of each working operation state event is preset. In this embodiment, the priority order of the turbine unit pre-grid connection event, the turbine unit post-grid connection event, the turbine unit flow control event and the turbine unit operation abnormality event is arranged from small to large. That is, the turbine unit operation abnormality event is the first priority event, and the turbine unit pre-grid connection event is the fourth priority event.

[0100] (2) According to the priority order, a working state event with the highest priority is taken as a target working state event, and a parameter corresponding to the target working state event is determined as a flow control parameter of the turbine unit.

[0101] Specifically, when it is determined that the turbine unit currently has multiple working status events, the highest working status event is used as the target working status event according to the priority order, and the parameters corresponding to the target working status event are determined as the flow control parameters of the turbine unit.

[0102] In this embodiment, according to different working state events of the turbine set, the parameters corresponding to the current working state event are determined, so that the most suitable parameters are determined according to the different working state events of the turbine set. In addition, according to the priority order of the working state events of the turbine set, the working state event with the highest priority is determined as the target working state event, and the corresponding parameters are determined as the flow control parameters of the turbine set, so that the turbine flow of the turbine set is accurately determined.

[0103] S307: Determine the total number of valves according to the number of all air supply valves and the number of regulating valves. Specifically, the total number of valves can be determined according to the following formula:

[0104] T = n + 1;

[0105] Among them, the regulating valve is generally 1. The number of air supply valves is n. T is the total number of valves.

[0106] S308. Determine the valve flow distribution coefficient according to the total number of valves.

[0107] Specifically, since each valve has different positions and functions in the turbine unit, the flow control capability of the turbine unit during operation is also different. Therefore, it is necessary to predetermine the flow distribution coefficient of each valve to reasonably determine the flow distribution output parameter allocated to each valve. In this embodiment, the valve flow distribution coefficient of the air supply valve is 1 / T*100. And the valve flow distribution coefficient of the regulating valve is 1.

[0108] S309: Determine the flow distribution output parameter corresponding to the regulating valve according to the valve flow distribution coefficient and the flow control parameter of the regulating valve.

[0109] Specifically, after the valve flow distribution coefficient of the regulating valve is determined, the flow distribution output parameter corresponding to the regulating valve can be determined according to the valve flow distribution coefficient of the regulating valve and the flow control parameter.

[0110] For example, the flow distribution output parameter corresponding to the regulating valve can be calculated according to the following formula:

[0111] OP OUT_CV (n) = T*OP OUT (n);

[0112] Among them, OP OUT_CV (n) is the flow distribution output parameter corresponding to the control valve in the current cycle. OUT (n) is the flow control parameter of the turbine unit.

[0113] In this embodiment, the flow allocated to the regulating valve is determined based on the number of all adjustable valves and the calculated flow control parameters, ensuring that when other air supply valves are adjusted to affect the operation of the entire turbine unit, the flow can be further adjusted by the regulating valve, thereby ensuring the smooth operation of the turbine unit.

[0114] S310: Obtain valve opening parameters and valve flow parameters of the regulating valve.

[0115] The valve opening parameter is the maximum and minimum parameters of the valve opening and closing scale. The valve flow parameter is the flow parameter corresponding to the valve at different openings.

[0116] Specifically, the valve opening parameters can be determined in advance for the regulating valve, and experiments or tests can be conducted to determine the flow parameters of the valve at different valve openings.

[0117] S311. Determine the valve flow characteristic relationship of the regulating valve according to the valve opening parameter and the valve flow parameter of the regulating valve.

[0118] Specifically, after obtaining the valve opening parameter and the valve flow parameter of the regulating valve, the corresponding relationship between the valve opening parameter and the valve flow parameter of the regulating valve can be determined according to the valve opening parameter and the valve flow parameter of the regulating valve. For example, the valve opening parameter of the regulating valve is used as an independent variable, and the valve flow parameter is used as a dependent variable to determine the valve flow characteristic relationship expression of the regulating valve.

[0119] S312: Determine the valve control output value of the regulating valve according to the valve flow characteristic relationship of the regulating valve and the flow distribution output parameter corresponding to the regulating valve.

[0120] Specifically, the valve control output value of the regulating valve can be calculated according to the following formula:

[0121] VALVE OUT_CV (n) = OP OUT_CV (n)*F CV (x cv );

[0122] Among them, VALVE OUT_CV (n) is the valve control output value of the regulating valve in the current cycle. CV (x CV ) is the valve flow characteristic relationship of the regulating valve, x CV It is the valve opening parameter of the regulating valve.

[0123] S313, controlling the valve opening of the regulating valve according to the valve control output value of the regulating valve.

[0124] The regulating valve is controlled by at least one of an electro-hydraulic control mode, a hydraulic operation mode and an electric control mode, so that the regulating valve opens according to the corresponding valve control output value.

[0125] Specifically, after the valve control output value of the regulating valve is determined, the valve opening of the regulating valve can be controlled according to the valve control output value.

[0126] For example, after the above steps have been completed and the valve control output value of the regulating valve and the valve control output value of each air supply valve have been determined, the valve control output value of the regulating valve and the valve control output value of each air supply valve can be subjected to proportional integral operation through the servo card to output a standard electrical signal instruction. The electrical signal is converted into an oil pressure signal through the electro-hydraulic converter, and then the oil drives the throttle oil motor actuator, and the lever drives the regulating valve to open.

[0127] S314, determining the number of air supply sections corresponding to each air supply valve, and determining the flow distribution output parameter corresponding to each air supply valve according to the number of air supply sections, the valve flow distribution coefficient and the flow control parameter of the air supply valve.

[0128] The number of air supply sections is the number of sections of the air supply valve. For example, the number of air supply sections of the Nth air supply valve is N.

[0129] Specifically, the flow distribution output parameter corresponding to each air supply valve can be calculated according to the following formula:

[0130]

[0131] Among them, OP OUT_N (n) is the flow distribution output parameter corresponding to the Nth section of the air supply valve in the current cycle. OUT(n) is the flow control parameter of the turbine unit.

[0132] In this embodiment, according to the valves of different sections and the flow control parameters of the turbine unit obtained by calculation, the flow distribution output parameters corresponding to the valves of different sections are determined, and the flow distribution of the valves of different sections is realized. At the same time, different flow rates are reasonably distributed to the valves of different sections, ensuring that the turbine unit can run smoothly when the overall flow rate remains unchanged.

[0133] S315: Obtain valve opening parameters and valve flow parameters of each air supply valve.

[0134] Specifically, the valve opening parameters may be determined in advance for each air supply valve, and experiments or tests may be performed to determine the flow parameters of the valve at different valve openings.

[0135] S316: Determine the valve flow characteristic relationship of each air supply valve according to the valve opening parameter and the valve flow parameter of each air supply valve.

[0136] Specifically, after the valve opening parameter and the valve flow parameter of each air supply valve are obtained, the corresponding relationship between the valve opening parameter and the valve flow parameter of each air supply valve can be determined according to the valve opening parameter and the valve flow parameter of each air supply valve. For example, the valve opening parameter of the air supply valve is used as an independent variable, and the valve flow parameter is used as a dependent variable to determine the valve flow characteristic relationship expression of each air supply valve.

[0137] S317: Determine the valve control output value of each air supply valve according to the valve flow characteristic relationship of each air supply valve and the flow distribution output parameter corresponding to each air supply valve.

[0138] Specifically, the valve control output value of each air supply valve can be calculated according to the following formula:

[0139] VALVE OUT _ N (n) = OP OUT _ N (n)*F N (x N );

[0140] Among them, VALVE OUT _ N (n) is the valve control output value of the Nth stage air supply valve in the current cycle. N (x N ) is the valve flow characteristic relationship of the Nth section air supply valve, x N It is the valve opening parameter of the Nth section air supply valve.

[0141] S318, controlling the valve opening of the corresponding air supply valve according to the valve control output value of each air supply valve.

[0142] Each air supply valve is controlled by at least one of an electro-hydraulic control mode, a hydraulic operation mode and an electric control mode, so that each air supply valve is opened according to the corresponding valve control output value.

[0143] Specifically, after the valve control output value of each air supply valve is determined, the valve opening of the air supply valve of the corresponding section can be controlled according to the valve control output value.

[0144] It is worth noting that S309-S313 and S314-S318 in this embodiment are parallel steps and can be executed simultaneously or sequentially.

[0145] Furthermore, the flow distribution of the regulating valve and the air supply valve can be described as follows: Figure 4 shown. Figure 4 This is an example diagram of the flow distribution of the valve. Specifically, the horizontal axis is the flow distribution, and the vertical axis is the valve flow. Among them, the flow distribution of the regulating valve is from 0 to 1 / T*100. The flow distribution of the first section of the air supply valve is from 1 / T*100 to 2 / T*100. The flow distribution of the second section of the air supply valve is from 2 / T*100 to N / T*100. The flow distribution of the Nth section of the air supply valve is from N / T*100 to 100%. Through the above method, it can finally be achieved as follows Figure 4 As shown, the valve flow after flow distribution of each valve. And, through the above method, the flow of each valve can be controlled in a split range.

[0146] Figure 5 The structure diagram of a control device for a turbine unit valve provided by an embodiment of the present invention is shown in FIG. Figure 5 As shown, the compressed air energy storage system includes a turbine unit, an air storage device, a regulating valve, an air supply valve and a valve control unit; the turbine unit is connected to the air storage device through a main pipeline, and the regulating valve is arranged between the turbine unit and the air storage device; the turbine unit includes at least three turbine expanders connected in series, and the turbine expander includes at least a medium-pressure section turbine and a high-pressure section turbine according to the rated working pressure, and one medium-pressure section turbine and one high-pressure section turbine each correspond to one air supply valve, and the air supply valve is connected between the corresponding turbine expander and the air storage device through a branch pipeline; the valve control unit is electrically connected to each turbine expander, the air storage device, the regulating valve and each air supply valve respectively; the device includes:

[0147] The acquisition module 501 is used to acquire the operation status event of the turbine unit and determine the flow control parameter of the turbine unit when the operation status event is triggered;

[0148] A first determination module 502 is used to determine a flow distribution output parameter corresponding to the regulating valve and a flow distribution output parameter corresponding to each gas supply valve according to the flow control parameter and the valve flow distribution coefficient;

[0149] The second determination module 503 is used to determine the valve control output value of the regulating valve according to the valve flow characteristic relationship of the regulating valve and the flow distribution output parameter corresponding to the regulating valve; and determine the valve control output value of each air supply valve according to the valve flow characteristic relationship of each air supply valve and the flow distribution output parameter corresponding to each air supply valve;

[0150] The control module 504 is used to control the valve opening of the regulating valve according to the valve control output value of the regulating valve; and to control the valve opening of each gas supply valve according to the valve control output value of each gas supply valve.

[0151] Optionally, the working operation status event includes a pre-grid connection event of the turbine set, a post-grid connection event of the turbine set, a flow control event of the turbine set, and an abnormal operation event of the turbine set; when the working operation status event is triggered, a flow control parameter of the turbine set is determined; and the acquisition module 501 is specifically used for:

[0152] If it is determined that the working operation status event is a pre-grid connection event of the turbine unit, the speed control output parameters are determined according to the control speed parameters and the target control speed parameters of the turbine unit; if it is determined that the working operation status event is a post-grid connection event of the turbine unit, the power control output parameters are determined according to the control power parameters and the target control power parameters of the turbine unit; if it is determined that the working operation status event is a flow control event of the turbine unit, the pre-set target flow control parameters are obtained; if it is determined that the working operation status event is an abnormal operation event of the turbine unit, the flow protection output parameters of the turbine unit are determined; the speed control output parameters, power control output parameters, target flow control parameters or flow protection output parameters are determined as the flow control parameters of the turbine unit.

[0153] Optionally, the speed control output parameter, the power control output parameter, the target flow control parameter or the flow protection output parameter is determined as the flow control parameter of the turbine unit, and the acquisition module 501 is specifically used for:

[0154] Obtain the priority order of the preset working state events; according to the priority order, take the working state event with the highest priority as the target working state event, and determine the parameters corresponding to the target working state event as the flow control parameters of the turbine unit.

[0155] Optionally, before determining the flow distribution output parameter corresponding to each air supply valve and the flow distribution output parameter corresponding to the regulating valve according to the flow control parameter and the valve flow distribution coefficient, the first determining module 502 is further used to:

[0156] The total number of valves is determined based on the number of all air supply valves and the number of regulating valves; the valve flow distribution coefficient is determined based on the total number of valves.

[0157] Optionally, the first determining module 502 is specifically configured to:

[0158] According to the valve flow distribution coefficient and flow control parameters of the regulating valve, the flow distribution output parameters corresponding to the regulating valve are determined; and the number of air supply sections corresponding to each air supply valve is determined, and according to the number of air supply sections, the valve flow distribution coefficient and flow control parameters of the air supply valve, the flow distribution output parameters corresponding to each air supply valve are determined.

[0159] Optionally, before determining the valve control output value of each air supply valve according to the valve flow characteristic relationship of each air supply valve and the flow distribution output parameter corresponding to each air supply valve, the second determining module 503 is further used to:

[0160] Obtain the valve opening parameters and valve flow parameters of each air supply valve, and obtain the valve opening parameters and valve flow parameters of the regulating valve; determine the valve flow characteristic relationship of the regulating valve based on the valve opening parameters and valve flow parameters of the regulating valve; and determine the valve flow characteristic relationship of each air supply valve based on the valve opening parameters and valve flow parameters of each air supply valve.

[0161] The control device for the turbine unit valve provided in the embodiment of the present invention can execute the control method for the turbine unit valve provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.

[0162] Figure 6 A schematic diagram of the structure of a valve control unit 6 provided for an embodiment of the present invention. The valve control unit can be presented in the form of an electronic device. 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 processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or required herein.

[0163] like Figure 6As shown, the valve control unit 6 includes at least one processor 11, and a memory connected to the at least one processor 11, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., wherein the memory stores a computer program that can be executed by at least one processor, and the processor 11 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or the computer program loaded from the storage unit 18 to the random access memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the valve control unit 6 can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other through a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0164] A number of components in the valve control unit 6 are connected to the I / O interface 15, including: an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a disk, an optical disk, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the valve control unit 6 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0165] The processor 11 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above, such as a control method for a turbine unit valve.

[0166] In some embodiments, the control method of the turbine valve can be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed on the valve control unit 6 via the ROM 12 and / or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the control method of the turbine valve described above can be performed. Alternatively, in other embodiments, the processor 11 can be configured to execute the control method of the turbine valve in any other appropriate manner (for example, by means of firmware).

[0167] Various implementations 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 chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0168] Computer programs for implementing 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, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0169] In the context of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in combination with an instruction execution system, device or equipment. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0170] To provide interaction with a user, the systems and techniques described herein may be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or trackball) through which the user can provide input to the electronic device. Other types of devices may also be used to provide interaction with the user; for example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form (including acoustic input, voice input, or tactile input).

[0171] The systems and techniques described herein may be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0172] A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The client and server relationship is generated by computer programs running on the respective computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services.

[0173] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0174] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for controlling a turbine unit valve, characterized in that: The compressed air energy storage system comprises a turbine unit, an air storage device, a regulating valve, an air supply valve and a valve control unit; the turbine unit is connected to the air storage device through a main pipeline, and the regulating valve is arranged between the turbine unit and the air storage device; the turbine unit comprises at least three turbine expanders connected in series, and the turbine expander comprises at least a medium-pressure section turbine and a high-pressure section turbine according to the rated working pressure, and one medium-pressure section turbine and one high-pressure section turbine each correspond to one air supply valve, and the air supply valve is connected between the corresponding turbine expander and the air storage device through a branch pipeline; the valve control unit is electrically connected to each turbine expander, the air storage device, the regulating valve and each air supply valve respectively; The method is applied to a valve control unit, and the method comprises: Acquire a working operation status event of the turbine unit, and determine a flow control parameter of the turbine unit when the working operation status event is triggered; Determine the flow distribution output parameter corresponding to the regulating valve and the flow distribution output parameter corresponding to each of the air supply valves according to the flow control parameter and the valve flow distribution coefficient; Determine the valve control output value of the regulating valve according to the valve flow characteristic relationship of the regulating valve and the flow distribution output parameter corresponding to the regulating valve; and determine the valve control output value of each of the air supply valves according to the valve flow characteristic relationship of each of the air supply valves and the flow distribution output parameter corresponding to each of the air supply valves; The valve opening of the regulating valve is controlled according to the valve control output value of the regulating valve; and the valve opening of each of the air supply valves is controlled according to the valve control output value of the corresponding air supply valve.

2. The method for controlling a turbine unit valve according to claim 1, characterized in that: The working operation status events include pre-grid connection events of the turbine unit, post-grid connection events of the turbine unit, flow control events of the turbine unit and abnormal operation events of the turbine unit; Determining the flow control parameter of the turbine unit when the working operation state event is triggered includes: If it is determined that the working operation state event is a pre-grid connection event of the turbine unit, determining a speed control output parameter according to a control speed parameter of the turbine unit and a target control speed parameter; If it is determined that the working operation state event is a post-grid connection event of the turbine unit, determining a power control output parameter according to a control power parameter of the turbine unit and a target control power parameter; If it is determined that the working operation state event is a flow control event of the turbine unit, obtaining a preset target flow control parameter; If it is determined that the working operation state event is an abnormal operation event of the turbine unit, determining a flow protection output parameter of the turbine unit; The speed control output parameter, the power control output parameter, the target flow control parameter or the flow protection output parameter is determined as the flow control parameter of the turbine unit.

3. The method for controlling a turbine unit valve according to claim 2, characterized in that: The step of determining the speed control output parameter, the power control output parameter, the target flow control parameter or the flow protection output parameter as the flow control parameter of the turbine unit comprises: Obtaining the preset priority order of the work running status events; According to the priority order, a working state event with the highest priority is taken as a target working state event, and a parameter corresponding to the target working state event is determined as a flow control parameter of the turbine set.

4. The method for controlling a turbine unit valve according to claim 1, characterized in that: Before determining the flow distribution output parameter corresponding to each of the air supply valves and the flow distribution output parameter corresponding to the regulating valve according to the flow control parameter and the valve flow distribution coefficient, the method further includes: Determine a total valve quantity parameter according to the quantity of all the air supply valves and the quantity of the regulating valves; The valve flow distribution coefficient is determined according to the total number parameter of the valves.

5. The method for controlling a turbine unit valve according to claim 4, characterized in that: Determining the flow distribution output parameter corresponding to each of the air supply valves and the flow distribution output parameter corresponding to the regulating valve according to the flow control parameter and the valve flow distribution coefficient includes: Determining a flow distribution output parameter corresponding to the regulating valve according to the valve flow distribution coefficient of the regulating valve and the flow control parameter; and The number of air supply sections corresponding to each of the air supply valves is determined, and the flow distribution output parameter corresponding to each of the air supply valves is determined according to the number of air supply sections, the valve flow distribution coefficient of the air supply valve and the flow control parameter.

6. The method for controlling a turbine unit valve according to claim 1, characterized in that: Before determining the valve control output value of each of the air supply valves according to the valve flow characteristic relationship of each of the air supply valves and the flow distribution output parameter corresponding to each of the air supply valves, the method further includes: Obtaining the valve opening parameter and valve flow parameter of each of the air supply valves, and obtaining the valve opening parameter and valve flow parameter of the regulating valve; Determining the valve flow characteristic relationship of the regulating valve according to the valve opening parameter and the valve flow parameter of the regulating valve; and, The valve flow characteristic relationship of each of the air supply valves is determined according to the valve opening parameter and the valve flow parameter of each of the air supply valves.

7. The method for controlling a turbine unit valve according to claim 1, characterized in that: Each of the air supply valves and the regulating valve is controlled by at least one of an electro-hydraulic operation mode, a hydraulic operation mode and an electric operation mode, so that each of the air supply valves and the regulating valve is opened according to the corresponding valve control output value.

8. A control device for a turbine unit valve, characterized in that: The compressed air energy storage system comprises a turbine unit, an air storage device, a regulating valve, an air supply valve and a valve control unit; the turbine unit is connected to the air storage device through a main pipeline, and the regulating valve is arranged between the turbine unit and the air storage device; the turbine unit comprises at least three turbine expanders connected in series, and the turbine expander comprises at least a medium-pressure section turbine and a high-pressure section turbine according to the rated working pressure, and one medium-pressure section turbine and one high-pressure section turbine each correspond to one air supply valve, and the air supply valve is connected between the corresponding turbine expander and the air storage device through a branch pipeline; the valve control unit is electrically connected to each turbine expander, the air storage device, the regulating valve and each air supply valve respectively; the device comprises: an acquisition module, used for acquiring a working operation state event of the turbine unit, and determining a flow control parameter of the turbine unit when the working operation state event is triggered; A first determination module, used for determining the flow distribution output parameter corresponding to the regulating valve and the flow distribution output parameter corresponding to each of the air supply valves according to the flow control parameter and the valve flow distribution coefficient; A second determination module is used to determine the valve control output value of the regulating valve according to the valve flow characteristic relationship of the regulating valve and the flow distribution output parameter corresponding to the regulating valve; and determine the valve control output value of each of the air supply valves according to the valve flow characteristic relationship of each of the air supply valves and the flow distribution output parameter corresponding to each of the air supply valves; A control module is used to control the valve opening of the regulating valve according to the valve control output value of the regulating valve; and to control the valve opening of the corresponding air supply valve according to the valve control output value of each air supply valve.

9. A valve control unit, characterized in that: include: one or more processors; a memory for storing one or more programs, When the one or more programs are executed by the one or more processors, the one or more processors implement the turbine unit valve control method according to any one of claims 1 to 7.

10. A readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the control method for a turbine unit valve according to any one of claims 1 to 7 is implemented.

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