A method and system for recycling residual pressure

Abstract

The present invention relates to the technical field of residual pressure recovery, and discloses a method and system for recycling residual pressure. The method comprises the following steps: receiving a residual pressure recycling instruction, deploying a plurality of residual pressure recovery detection points on a residual pressure recovery device; collecting residual pressure data of each residual pressure recovery detection point, and calculating a residual pressure detection factor of the corresponding residual pressure recovery detection point; screening and processing all residual pressure recovery detection points based on the residual pressure detection factor to obtain a target residual pressure recovery detection point; introducing the generated residual pressure into a pressure energy conversion device to convert the residual pressure into mechanical energy to be recycled; setting working state data of a synchronous generator according to all target residual pressure recovery detection points, converting the mechanical energy to be recycled into electrical energy based on the synchronous generator, and connecting the electrical energy to the grid according to a grid-connected controller, thereby realizing intelligent recycling of residual pressure, reducing the difficulty and cost of residual pressure recovery, not affecting the safety of the residual pressure recovery device, and achieving high residual pressure utilization efficiency, thereby reducing environmental pollution.

Description

Technical Field

[0001] The present invention relates to the technical field of excess pressure recovery, and in particular to a method and system for recovering excess pressure. Background Art

[0002] Residual pressure recovery technology is an important part of the optimization of modern industry and energy systems. In the field of power generation, generators are key equipment for converting mechanical energy into electrical energy. During the operation of generators, especially thermal power plants, nuclear power plants and geothermal power plants, a large amount of residual pressure is often generated. These residual pressures mainly come from boiler superheated steam, gas turbine exhaust, geothermal fluids discharged from geothermal wells, etc. In these processes, steam or gas still maintains a certain pressure after passing through the turbine. If this part of energy is not used, it will constitute a waste.

[0003] The traditional generator residual pressure recovery method mainly adopts the control method of synchronous generator and grid-connected controller. In actual application, the operator needs to adjust the synchronous generator excitation and equipment speed, modulate the voltage and frequency to close to the grid parameters, and finally achieve grid connection by the grid-connected controller. The grid-connected operation process is relatively cumbersome and requires high operator requirements. In order to ensure that the recovered residual pressure matches the grid and achieve the maximum recovery efficiency, a special adjustment device needs to be configured, which further increases the complexity and cost of the technology. Summary of the invention

[0004] In view of this, the present invention proposes a method and system for recycling excess pressure, aiming to solve the problem that the current technology cannot realize intelligent recycling of excess pressure, which increases the complexity and cost of excess pressure recovery.

[0005] The present invention proposes a method for recovering excess pressure, comprising:

[0006] receiving a residual pressure recovery instruction, and deploying a plurality of residual pressure recovery detection points on the residual pressure recovery equipment based on the residual pressure recovery instruction;

[0007] Collecting residual pressure data of each residual pressure recovery detection point, and calculating a residual pressure detection factor corresponding to the residual pressure recovery detection point based on the residual pressure data;

[0008] Screening all the residual pressure recovery detection points based on the residual pressure detection factor to obtain a target residual pressure recovery detection point;

[0009] Introducing the generated residual pressure into a pressure energy conversion device, and converting the residual pressure into mechanical energy to be recovered and utilized based on the pressure energy conversion device;

[0010] The working state data of the synchronous generator is set according to all target residual pressure recovery detection points, the mechanical energy to be recovered and utilized is converted into electrical energy based on the synchronous generator, and the electrical energy is connected to the grid according to the grid connection controller.

[0011] Furthermore, before receiving the residual pressure recovery instruction and deploying a plurality of residual pressure recovery detection points on the residual pressure recovery equipment based on the residual pressure recovery instruction, the method further includes:

[0012] Analyze the residual pressure recovery instruction and extract corresponding unique identification information, wherein the unique identification information includes a first timestamp, an instruction content hash value and a serial number;

[0013] Traversing the unique identification information in the identification information database, if the unique identification information is not in the identification information database, determining that the residual pressure recovery instruction is a new instruction, executing an instruction receiving operation, and storing the unique identification information in the identification information database;

[0014] If the unique identification information is in the identification information database, extracting a second timestamp of the identification information corresponding to the unique identification information;

[0015] calculating a receiving time interval based on the first timestamp and the second timestamp, and generating a suspected duplicate instruction if the receiving time interval is less than or equal to a preset receiving time interval;

[0016] If the receiving time interval is greater than the preset receiving time interval, the instruction receiving operation is executed.

[0017] Furthermore, when the residual pressure data of each residual pressure recovery detection point is collected and the residual pressure detection factor of the corresponding residual pressure recovery detection point is calculated based on the residual pressure data, it includes:

[0018] Preprocessing the residual pressure data, wherein the preprocessing includes removing abnormal values ​​and duplicate values, and the residual pressure data includes fluid flow rate, fluid pressure, and fluid potential energy height;

[0019] Calculate a first residual pressure detection factor corresponding to a residual pressure recovery detection point based on the fluid flow rate, fluid pressure, and fluid potential energy height;

[0020] ;

[0021] Wherein, W1 is the first residual pressure detection factor of the residual pressure recovery detection point, a is the fluid pressure, β is the fluid density, F is the fluid flow rate, d is a constant, and d=9.8, Δe is the fluid potential energy height;

[0022] Obtaining a first flow resistance of the residual pressure recovery detection point;

[0023] Based on a preset determination method, all the adjacent residual pressure recovery detection points of the residual pressure recovery detection point are determined, and the flow resistances of all the adjacent residual pressure recovery detection points are respectively obtained to construct a flow resistance set;

[0024] Calculating the flow resistance difference between the first flow resistance and the flow resistance in the flow resistance set respectively, and selecting the minimum flow resistance difference as the second residual pressure detection factor W2 corresponding to the residual pressure recovery detection point;

[0025] The residual pressure detection factor of the corresponding residual pressure recovery detection point is calculated according to the first residual pressure detection factor W1 and the second residual pressure detection factor W2.

[0026] Further, when calculating the residual pressure detection factor corresponding to the residual pressure recovery detection point according to the first residual pressure detection factor W1 and the second residual pressure detection factor W2, it includes:

[0027] Performing numerical normalization processing on the first residual pressure detection factor W1 and the second residual pressure detection factor W2 respectively to obtain corresponding first normalized numerical values ​​and second normalized numerical values;

[0028] The residual pressure detection factor of the corresponding residual pressure recovery detection point is calculated based on the first normalized value and the second normalized value:

[0029] ;

[0030] Among them, G is the residual pressure detection factor of the residual pressure recovery detection point, k1 is the calculation coefficient corresponding to the first normalized value, W3 is the first normalized value, W4 is the second normalized value, and k2 is the calculation coefficient corresponding to the second normalized value.

[0031] Further, when all the residual pressure recovery detection points are screened based on the residual pressure detection factor to obtain the target residual pressure recovery detection point, it includes:

[0032] Obtaining a preset residual pressure detection factor, and screening all residual pressure recovery detection points according to the preset residual pressure detection factor and the residual pressure detection factor;

[0033] When the residual pressure detection factor is less than or equal to the preset residual pressure detection factor, the corresponding residual pressure recovery detection point is eliminated;

[0034] When the residual pressure detection factor is greater than the preset residual pressure detection factor, the corresponding residual pressure recovery detection point is reserved and used as the target residual pressure recovery detection point.

[0035] Furthermore, when setting the working state data of the synchronous generator according to all target residual pressure recovery detection points, it includes:

[0036] Extract all residual pressure detection factors corresponding to the target residual pressure recovery detection point;

[0037] Extracting the same residual pressure detection factor from all residual pressure detection factors and constructing multiple residual pressure detection factor series;

[0038] Count the number of the first series of residual pressure detection factor series;

[0039] Extracting a residual pressure detection factor from all residual pressure detection factor series respectively, and calculating a first residual pressure detection factor and value;

[0040] Obtaining a preset residual pressure detection factor, eliminating all residual pressure detection factor number series that are less than the preset residual pressure detection factor, and counting the number of second number series of the remaining residual pressure detection factor number series;

[0041] Extracting a residual pressure detection factor from the remaining residual pressure detection factor sequence respectively, and calculating a second residual pressure detection factor and value;

[0042] Calculate the comprehensive residual pressure reflection value of the residual pressure recovery equipment according to the first number series quantity, the second number series quantity, the first residual pressure detection factor sum value and the second residual pressure detection factor sum value;

[0043] The operating state data of the synchronous generator is set based on the comprehensive residual pressure reflecting value.

[0044] Further, when calculating the comprehensive residual pressure reflection value of the residual pressure recovery equipment according to the first number series quantity, the second number series quantity, the first residual pressure detection factor and the second residual pressure detection factor and the value, it includes:

[0045] The comprehensive residual pressure reflection value of the residual pressure recovery equipment is calculated according to the following formula:

[0046] ;

[0047] Among them, P is the comprehensive residual pressure reflection value of the residual pressure recovery equipment, Y2 is the second residual pressure detection factor and value, Y1 is the first residual pressure detection factor and value, T1 is the number of the first series, T2 is the number of the second series, and S is the preset residual pressure detection factor.

[0048] Further, when setting the working state data of the synchronous generator based on the comprehensive residual pressure reflection value, it includes:

[0049] Presetting a plurality of selection intervals, wherein each selection interval includes a first preset comprehensive residual pressure reflection value, a second preset comprehensive residual pressure reflection value, an excitation current of a synchronous generator, and a generator speed;

[0050] Traversing the comprehensive residual pressure reflection value in all selection intervals to determine a selection interval corresponding to the comprehensive residual pressure reflection value;

[0051] The corresponding excitation current and generator speed are extracted from the corresponding selection interval and used as the working state data of the synchronous generator.

[0052] Compared with the prior art, the present invention has the following beneficial effects:

[0053] The present invention discloses a method and system for recycling residual pressure, which comprises the following steps: receiving a residual pressure recycling instruction, deploying a plurality of residual pressure recycling detection points on a residual pressure recovery device; collecting residual pressure data of each residual pressure recovery detection point, and calculating a residual pressure detection factor of the corresponding residual pressure recovery detection point based on the residual pressure data; screening and processing all residual pressure recovery detection points based on the residual pressure detection factor to obtain a target residual pressure recovery detection point; introducing the generated residual pressure into a pressure energy conversion device to convert the residual pressure into mechanical energy to be recycled; setting working state data of a synchronous generator according to all target residual pressure recovery detection points, converting the mechanical energy to be recycled into electrical energy based on the synchronous generator, and connecting electrical energy to the grid according to a grid-connected controller, thereby realizing intelligent recycling of residual pressure, reducing the difficulty and cost of residual pressure recovery, not affecting the safety of the residual pressure recovery device, and achieving high residual pressure utilization efficiency, thereby reducing environmental pollution.

[0054] On the other hand, the present application also provides a system for recovering excess pressure, comprising:

[0055] A receiving module, used for receiving a residual pressure recovery instruction, and deploying a plurality of residual pressure recovery detection points on the residual pressure recovery equipment based on the residual pressure recovery instruction;

[0056] A calculation module, used for collecting residual pressure data of each residual pressure recovery detection point, and calculating a residual pressure detection factor of the corresponding residual pressure recovery detection point based on the residual pressure data;

[0057] A screening module, used for screening all residual pressure recovery detection points based on the residual pressure detection factor to obtain a target residual pressure recovery detection point;

[0058] A conversion module, used for introducing the generated residual pressure into the pressure energy conversion device, and converting the residual pressure into mechanical energy to be recycled based on the pressure energy conversion device;

[0059] The recovery module is used to set the working state data of the synchronous generator according to all target residual pressure recovery detection points, convert the mechanical energy to be recovered into electrical energy based on the synchronous generator, and connect the electrical energy to the grid according to the grid-connected controller.

[0060] Furthermore, it also includes:

[0061] A first extraction module, configured to analyze the residual pressure recovery instruction and extract corresponding unique identification information, wherein the unique identification information includes a first timestamp, an instruction content hash value, and a serial number;

[0062] an identification traversal module, used for traversing the unique identification information in the identification information database, and if the unique identification information is not in the identification information database, determining that the residual pressure recovery instruction is a new instruction, executing an instruction receiving operation, and storing the unique identification information in the identification information database;

[0063] A second extraction module, configured to extract a second timestamp of identification information corresponding to the unique identification information if the unique identification information is in the identification information database;

[0064] A first judgment module, configured to calculate a receiving time interval based on the first timestamp and the second timestamp, and generate a suspected duplicate instruction if the receiving time interval is less than or equal to a preset receiving time interval;

[0065] The second judgment module is used to execute the instruction receiving operation if the receiving time interval is greater than the preset receiving time interval.

[0066] It is understandable that the above-mentioned system and method for recovering and utilizing residual pressure have the same beneficial effects, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0068] Figure 1 A schematic flow chart of a method for recovering excess pressure provided by an embodiment of the present invention;

[0069] Figure 2 A schematic structural diagram of a system for recovering excess pressure provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0070] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features described in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0071] like Figure 1 As shown, in some embodiments of the present application, this embodiment provides a method for recovering excess pressure, including:

[0072] S110: receiving a residual pressure recovery instruction, and deploying a plurality of residual pressure recovery detection points on the residual pressure recovery equipment based on the residual pressure recovery instruction;

[0073] In this embodiment, the equipment for recovering excess pressure includes a steam turbine, a hydraulic turbine, a wind turbine, a compressor, a water turbine, etc. The equipment for recovering excess pressure refers to equipment that can generate excess pressure.

[0074] In this embodiment, the residual pressure recovery detection points can be evenly deployed according to the volume and surface area of ​​the residual pressure recovery equipment.

[0075] In some embodiments of the present application, before receiving a residual pressure recovery instruction and deploying multiple residual pressure recovery detection points on the residual pressure recovery equipment based on the residual pressure recovery instruction, the method further includes:

[0076] Analyze the residual pressure recovery instruction and extract corresponding unique identification information, wherein the unique identification information includes a first timestamp, an instruction content hash value and a serial number;

[0077] Traversing the unique identification information in the identification information database, if the unique identification information is not in the identification information database, determining that the residual pressure recovery instruction is a new instruction, executing an instruction receiving operation, and storing the unique identification information in the identification information database;

[0078] If the unique identification information is in the identification information database, extracting a second timestamp of the identification information corresponding to the unique identification information;

[0079] calculating a receiving time interval based on the first timestamp and the second timestamp, and generating a suspected duplicate instruction if the receiving time interval is less than or equal to a preset receiving time interval;

[0080] If the receiving time interval is greater than the preset receiving time interval, the instruction receiving operation is executed.

[0081] In this embodiment, the identification information database is formed based on the identification information that has been received.

[0082] In this embodiment, the preset receiving time interval can be set according to actual conditions, and is preferably 1 hour.

[0083] In this embodiment, after the suspected duplicate instruction is generated, the suspected duplicate instruction is sent to the staff client, and the relevant staff decides whether to receive the residual pressure recovery instruction. At this time, it may be an error in the staff operation, or it may be necessary to receive the residual pressure recovery instruction again within the preset receiving time interval.

[0084] The beneficial effect of the above technical solution is that the present invention can avoid repeated reception of residual pressure recovery instructions within a preset receiving time interval by generating suspected repeated instructions, avoid duplication of work, and avoid missed operations, thereby ensuring the normal progress of residual pressure recovery.

[0085] S120: collecting residual pressure data of each residual pressure recovery detection point, and calculating a residual pressure detection factor corresponding to the residual pressure recovery detection point based on the residual pressure data;

[0086] In some embodiments of the present application, when the residual pressure data of each residual pressure recovery detection point is collected and the residual pressure detection factor corresponding to the residual pressure recovery detection point is calculated based on the residual pressure data, the method includes:

[0087] Preprocessing the residual pressure data, wherein the preprocessing includes removing abnormal values ​​and duplicate values, and the residual pressure data includes fluid flow rate, fluid pressure, and fluid potential energy height;

[0088] Calculate a first residual pressure detection factor corresponding to a residual pressure recovery detection point based on the fluid flow rate, fluid pressure, and fluid potential energy height;

[0089] ;

[0090] Wherein, W1 is the first residual pressure detection factor of the residual pressure recovery detection point, a is the fluid pressure, β is the fluid density, F is the fluid flow rate, d is a constant, and d=9.8, Δe is the fluid potential energy height;

[0091] Obtaining a first flow resistance of the residual pressure recovery detection point;

[0092] Based on a preset determination method, all the adjacent residual pressure recovery detection points of the residual pressure recovery detection point are determined, and the flow resistances of all the adjacent residual pressure recovery detection points are respectively obtained to construct a flow resistance set;

[0093] Calculating the flow resistance difference between the first flow resistance and the flow resistance in the flow resistance set respectively, and selecting the minimum flow resistance difference as the second residual pressure detection factor W2 corresponding to the residual pressure recovery detection point;

[0094] The residual pressure detection factor of the corresponding residual pressure recovery detection point is calculated according to the first residual pressure detection factor W1 and the second residual pressure detection factor W2.

[0095] In this embodiment, an abnormal value refers to obviously erroneous residual pressure data, and a repeated value refers to residual pressure data generated by repeated detection of the same residual pressure recovery detection point.

[0096] In this embodiment, the fluid flow rate is obtained by an ultrasonic flow meter, which measures the fluid flow rate by transmitting and receiving ultrasonic pulses. The principle of the ultrasonic flow meter is to calculate the flow rate by using the influence of the fluid on the ultrasonic propagation speed. The fluid pressure is obtained by a pressure sensor, which directly converts the pressure change into an electrical signal by using the piezoelectric effect or strain gauge technology. The potential energy height is obtained by an ultrasonic level meter, which measures the liquid level by transmitting and receiving ultrasonic pulses.

[0097] In this embodiment, the flow resistance is the reaction force that hinders the flow caused by the momentum transfer between all viscous fluids and the objects that produce relative motion when the fluid is in motion. The flow resistance is calculated according to the following formula:

[0098] τ_w = λ * (ρ / 2) * F 2 , where τ_w is the flow resistance, λ is the friction coefficient, and ρ is the fluid density.

[0099] In this embodiment, the preset determination method is a fixed radius method, which takes the residual pressure recovery detection point as the center point, draws a circle within a certain radius of the center point, and all points within the circle are counted as adjacent residual pressure recovery detection points.

[0100] The beneficial effect of the above technical solution is: the present invention calculates the residual pressure detection factor corresponding to the residual pressure recovery detection point according to the first residual pressure detection factor W1 and the second residual pressure detection factor W2, which can lay the foundation for the recovery and utilization of residual pressure and provide reliable data support for the operation of the synchronous generator.

[0101] In some embodiments of the present application, when calculating the residual pressure detection factor corresponding to the residual pressure recovery detection point according to the first residual pressure detection factor W1 and the second residual pressure detection factor W2, it includes:

[0102] Performing numerical normalization processing on the first residual pressure detection factor W1 and the second residual pressure detection factor W2 respectively to obtain corresponding first normalized numerical values ​​and second normalized numerical values;

[0103] The residual pressure detection factor of the corresponding residual pressure recovery detection point is calculated based on the first normalized value and the second normalized value:

[0104] ;

[0105] Among them, G is the residual pressure detection factor of the residual pressure recovery detection point, k1 is the calculation coefficient corresponding to the first normalized value, W3 is the first normalized value, W4 is the second normalized value, and k2 is the calculation coefficient corresponding to the second normalized value.

[0106] In this embodiment, the first residual pressure detection factor W1 and the second residual pressure detection factor W2 are numerically normalized according to linear normalization, and the specific normalization process is not described in detail here.

[0107] The beneficial effect of the above technical solution is: the present invention performs numerical normalization processing on the first residual pressure detection factor W1 and the second residual pressure detection factor W2, which can simplify the calculation process and avoid complex calculations. The residual pressure detection factor of the corresponding residual pressure recovery detection point is calculated based on the first normalized value and the second normalized value, which ensures the calculation accuracy, avoids errors, and ensures the intelligent recovery and utilization of residual pressure.

[0108] S130: Screening all residual pressure recovery detection points based on the residual pressure detection factor to obtain a target residual pressure recovery detection point;

[0109] In some embodiments of the present application, when all the residual pressure recovery detection points are screened based on the residual pressure detection factor to obtain the target residual pressure recovery detection point, it includes:

[0110] Obtaining a preset residual pressure detection factor, and screening all residual pressure recovery detection points according to the preset residual pressure detection factor and the residual pressure detection factor;

[0111] When the residual pressure detection factor is less than or equal to the preset residual pressure detection factor, the corresponding residual pressure recovery detection point is eliminated;

[0112] When the residual pressure detection factor is greater than the preset residual pressure detection factor, the corresponding residual pressure recovery detection point is reserved and used as the target residual pressure recovery detection point.

[0113] In this embodiment, the preset residual pressure detection factor is a value obtained by analyzing the historical residual pressure recovery process, which can reflect the best residual pressure recovery efficiency, and is preferably 7 here.

[0114] The beneficial effect of the above technical solution is that the present invention screens and processes all residual pressure recovery detection points according to the preset residual pressure detection factor and the residual pressure detection factor, which can avoid the occurrence of power conversion errors in the synchronous generator, avoid energy loss, and improve power generation accuracy.

[0115] S140: introducing the generated residual pressure into a pressure energy conversion device, and converting the residual pressure into mechanical energy to be recycled based on the pressure energy conversion device;

[0116] In this embodiment, it can be based on a screw expander, a hydraulic turbine, a residual pressure power generation device and other devices, and the specific selection depends on the actual situation.

[0117] S150: setting the working state data of the synchronous generator according to all target residual pressure recovery detection points, converting the mechanical energy to be recovered into electrical energy based on the synchronous generator, and connecting the electrical energy to the grid according to the grid connection controller.

[0118] In some embodiments of the present application, when setting the working state data of the synchronous generator according to all target residual pressure recovery detection points, it includes:

[0119] Extract all residual pressure detection factors corresponding to the target residual pressure recovery detection point;

[0120] Extracting the same residual pressure detection factor from all residual pressure detection factors and constructing multiple residual pressure detection factor series;

[0121] Count the number of the first series of residual pressure detection factor series;

[0122] Extracting a residual pressure detection factor from all residual pressure detection factor series respectively, and calculating a first residual pressure detection factor and value;

[0123] Obtaining a preset residual pressure detection factor, eliminating all residual pressure detection factor number series that are less than the preset residual pressure detection factor, and counting the number of second number series of the remaining residual pressure detection factor number series;

[0124] Extracting a residual pressure detection factor from the remaining residual pressure detection factor sequence respectively, and calculating a second residual pressure detection factor and value;

[0125] Calculate the comprehensive residual pressure reflection value of the residual pressure recovery equipment according to the first number series quantity, the second number series quantity, the first residual pressure detection factor sum value and the second residual pressure detection factor sum value;

[0126] The operating state data of the synchronous generator is set based on the comprehensive residual pressure reflecting value.

[0127] In this embodiment, if all the residual pressure detection factors are {3, 3, 4, 6, 7, 7, 8, 8}, then the residual pressure detection factor series is {3, 3}, {7, 7}, {8, 8}, the first series quantity is 3, and one residual pressure detection factor is extracted from all the residual pressure detection factor series respectively, that is, 3, 7, 8, and the sum of the first residual pressure detection factors = 3+7+8. If the preset residual pressure detection factor is 5, the remaining residual pressure detection factor series is {7, 7}, {8, 8}, and the second series quantity of the remaining residual pressure detection factor series is 2, and one residual pressure detection factor is extracted from the remaining residual pressure detection factor series respectively, that is, 7, 8, and the sum of the second residual pressure detection factors = 7+8. It should be understood that the above is shown by way of example and is not specifically limited.

[0128] The beneficial effect of the above technical solution is: the present invention calculates the comprehensive residual pressure reflection value of the residual pressure recovery equipment according to the first number series number, the second number series number, the first residual pressure detection factor sum and the second residual pressure detection factor sum, which can lay the foundation for the setting of the working status data of the synchronous generator and avoid errors caused by human participation.

[0129] In some embodiments of the present application, when calculating the comprehensive residual pressure reflection value of the residual pressure recovery device according to the first number series quantity, the second number series quantity, the first residual pressure detection factor and value, and the second residual pressure detection factor and value, it includes:

[0130] The comprehensive residual pressure reflection value of the residual pressure recovery equipment is calculated according to the following formula:

[0131] ;

[0132] Among them, P is the comprehensive residual pressure reflection value of the residual pressure recovery equipment, Y2 is the second residual pressure detection factor and value, Y1 is the first residual pressure detection factor and value, T1 is the number of the first series, T2 is the number of the second series, and S is the preset residual pressure detection factor.

[0133] In some embodiments of the present application, when setting the working state data of the synchronous generator based on the comprehensive residual pressure reflection value, it includes:

[0134] Presetting a plurality of selection intervals, wherein each selection interval includes a first preset comprehensive residual pressure reflection value, a second preset comprehensive residual pressure reflection value, an excitation current of a synchronous generator, and a generator speed;

[0135] Traversing the comprehensive residual pressure reflection value in all selection intervals to determine a selection interval corresponding to the comprehensive residual pressure reflection value;

[0136] The corresponding excitation current and generator speed are extracted from the corresponding selection interval and used as the working state data of the synchronous generator.

[0137] In this embodiment, for example, the first selection interval (0, 10], 10, 200, where 0 is the first preset comprehensive residual pressure reflection value, 10 is the second preset comprehensive residual pressure reflection value, the excitation current is 10 amperes, and the generator speed is 200 rpm; the second selection interval (10, 20], 30, 400, where 10 is the first preset comprehensive residual pressure reflection value, 20 is the second preset comprehensive residual pressure reflection value, the excitation current is 30 amperes, and the generator speed is 400 rpm. The specific setting is based on the historical waste heat recovery and utilization. The values ​​in each selection interval are paired, so that the synchronous generator can be in the best power generation state.

[0138] The beneficial effect of the above technical solution is: the present invention traverses the comprehensive residual pressure reflection value in all selection intervals, determines the selection interval corresponding to the comprehensive residual pressure reflection value, extracts the corresponding excitation current and generator speed from the corresponding selection interval, and uses them as the working status data of the synchronous generator, which can realize the intelligent setting of the synchronous generator, avoid the setting errors caused by manual participation, ensure the efficiency of residual pressure recovery and reduce the difficulty and cost of residual pressure recovery.

[0139] like Figure 2 As shown, in another preferred embodiment based on the above embodiment, this embodiment provides a system for recovering excess pressure, including:

[0140] A receiving module, used for receiving a residual pressure recovery instruction, and deploying a plurality of residual pressure recovery detection points on the residual pressure recovery equipment based on the residual pressure recovery instruction;

[0141] A calculation module, used for collecting residual pressure data of each residual pressure recovery detection point, and calculating a residual pressure detection factor of the corresponding residual pressure recovery detection point based on the residual pressure data;

[0142] A screening module, used for screening all residual pressure recovery detection points based on the residual pressure detection factor to obtain a target residual pressure recovery detection point;

[0143] A conversion module, used for introducing the generated residual pressure into the pressure energy conversion device, and converting the residual pressure into mechanical energy to be recycled based on the pressure energy conversion device;

[0144] The recovery module is used to set the working state data of the synchronous generator according to all target residual pressure recovery detection points, convert the mechanical energy to be recovered into electrical energy based on the synchronous generator, and connect the electrical energy to the grid according to the grid-connected controller.

[0145] In some embodiments of the present application, it also includes:

[0146] A first extraction module, configured to analyze the residual pressure recovery instruction and extract corresponding unique identification information, wherein the unique identification information includes a first timestamp, an instruction content hash value, and a serial number;

[0147] an identification traversal module, used for traversing the unique identification information in the identification information database, and if the unique identification information is not in the identification information database, determining that the residual pressure recovery instruction is a new instruction, executing an instruction receiving operation, and storing the unique identification information in the identification information database;

[0148] A second extraction module, configured to extract a second timestamp of identification information corresponding to the unique identification information if the unique identification information is in the identification information database;

[0149] A first judgment module, configured to calculate a receiving time interval based on the first timestamp and the second timestamp, and generate a suspected duplicate instruction if the receiving time interval is less than or equal to a preset receiving time interval;

[0150] The second judgment module is used to execute the instruction receiving operation if the receiving time interval is greater than the preset receiving time interval.

[0151] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems or computer program products. Therefore, the present application may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present application may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0152] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems) and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0153] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0154] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0155] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A method for recovering excess pressure, characterized in that: include: receiving a residual pressure recovery instruction, and deploying a plurality of residual pressure recovery detection points on the residual pressure recovery equipment based on the residual pressure recovery instruction; Collecting residual pressure data of each residual pressure recovery detection point, and calculating a residual pressure detection factor corresponding to the residual pressure recovery detection point based on the residual pressure data; Screening all the residual pressure recovery detection points based on the residual pressure detection factor to obtain a target residual pressure recovery detection point; Introducing the generated residual pressure into a pressure energy conversion device, and converting the residual pressure into mechanical energy to be recovered and utilized based on the pressure energy conversion device; The working state data of the synchronous generator is set according to all target residual pressure recovery detection points, the mechanical energy to be recovered is converted into electrical energy based on the synchronous generator, and the electrical energy is connected to the grid according to the grid connection controller; When the residual pressure data of each residual pressure recovery detection point is collected and the residual pressure detection factor of the corresponding residual pressure recovery detection point is calculated based on the residual pressure data, it includes: Preprocessing the residual pressure data, wherein the preprocessing includes removing abnormal values ​​and duplicate values, and the residual pressure data includes fluid flow rate, fluid pressure, and fluid potential energy height; Calculate a first residual pressure detection factor corresponding to a residual pressure recovery detection point based on the fluid flow rate, fluid pressure, and fluid potential energy height; Wherein, W1 is the first residual pressure detection factor of the residual pressure recovery detection point, a is the fluid pressure, β is the fluid density, F is the fluid flow rate, d is a constant, and d=9.8, Δe is the fluid potential energy height; Obtaining a first flow resistance of the residual pressure recovery detection point; Based on a preset determination method, all the adjacent residual pressure recovery detection points of the residual pressure recovery detection point are determined, and the flow resistances of all the adjacent residual pressure recovery detection points are respectively obtained to construct a flow resistance set; Calculating the flow resistance difference between the first flow resistance and the flow resistance in the flow resistance set respectively, and selecting the minimum flow resistance difference as the second residual pressure detection factor W2 corresponding to the residual pressure recovery detection point; Calculate the residual pressure detection factor of the corresponding residual pressure recovery detection point according to the first residual pressure detection factor W1 and the second residual pressure detection factor W2; When calculating the residual pressure detection factor corresponding to the residual pressure recovery detection point according to the first residual pressure detection factor W1 and the second residual pressure detection factor W2, it includes: Performing numerical normalization processing on the first residual pressure detection factor W1 and the second residual pressure detection factor W2 respectively to obtain corresponding first normalized numerical values ​​and second normalized numerical values; The residual pressure detection factor of the corresponding residual pressure recovery detection point is calculated based on the first normalized value and the second normalized value: <h2 style=";text-align:left;direction:ltr">G = k1 × (1 + W3)<h2 style=";text-align:left;direction:ltr"> W4 <h2 style=";text-align:left;direction:ltr"> +k2×(1+W4)<h2 style=";text-align:left;direction:ltr"> W3 <h2 style=";text-align:left;direction:ltr"> ; Among them, G is the residual pressure detection factor of the residual pressure recovery detection point, k1 is the calculation coefficient corresponding to the first normalized value, W3 is the first normalized value, W4 is the second normalized value, and k2 is the calculation coefficient corresponding to the second normalized value.

2. The method for recovering excess pressure according to claim 1, characterized in that: Before receiving the residual pressure recovery instruction and deploying a plurality of residual pressure recovery detection points on the residual pressure recovery equipment based on the residual pressure recovery instruction, the method further includes: Analyze the residual pressure recovery instruction and extract corresponding unique identification information, wherein the unique identification information includes a first timestamp, an instruction content hash value and a serial number; Traversing the unique identification information in the identification information database, if the unique identification information is not in the identification information database, determining that the residual pressure recovery instruction is a new instruction, executing an instruction receiving operation, and storing the unique identification information in the identification information database; If the unique identification information is in the identification information database, extracting a second timestamp of the identification information corresponding to the unique identification information; calculating a receiving time interval based on the first timestamp and the second timestamp, and generating a suspected duplicate instruction if the receiving time interval is less than or equal to a preset receiving time interval; If the receiving time interval is greater than the preset receiving time interval, the instruction receiving operation is executed.

3. The method for recovering excess pressure according to claim 1, characterized in that: When all the residual pressure recovery detection points are screened based on the residual pressure detection factor to obtain the target residual pressure recovery detection point, it includes: Obtaining a preset residual pressure detection factor, and screening all residual pressure recovery detection points according to the preset residual pressure detection factor and the residual pressure detection factor; When the residual pressure detection factor is less than or equal to the preset residual pressure detection factor, the corresponding residual pressure recovery detection point is eliminated; When the residual pressure detection factor is greater than the preset residual pressure detection factor, the corresponding residual pressure recovery detection point is reserved and used as the target residual pressure recovery detection point.

4. The method for recovering excess pressure according to claim 1, characterized in that: When setting the working status data of the synchronous generator according to all target residual pressure recovery detection points, it includes: Extract all residual pressure detection factors corresponding to the target residual pressure recovery detection point; Extracting the same residual pressure detection factor from all residual pressure detection factors and constructing multiple residual pressure detection factor series; Count the number of the first series of residual pressure detection factor series; Extracting a residual pressure detection factor from all residual pressure detection factor series respectively, and calculating a first residual pressure detection factor and value; Obtaining a preset residual pressure detection factor, eliminating all residual pressure detection factor number series that are less than the preset residual pressure detection factor, and counting the number of second number series of the remaining residual pressure detection factor number series; Extracting a residual pressure detection factor from the remaining residual pressure detection factor sequence respectively, and calculating a second residual pressure detection factor and value; Calculate the comprehensive residual pressure reflection value of the residual pressure recovery equipment according to the first number series quantity, the second number series quantity, the first residual pressure detection factor sum value and the second residual pressure detection factor sum value; The operating state data of the synchronous generator is set based on the comprehensive residual pressure reflecting value.

5. The method for recovering excess pressure according to claim 4, characterized in that: When calculating the comprehensive residual pressure reflection value of the residual pressure recovery equipment according to the first number series quantity, the second number series quantity, the first residual pressure detection factor and value, and the second residual pressure detection factor and value, it includes: The comprehensive residual pressure reflection value of the residual pressure recovery equipment is calculated according to the following formula: Among them, P is the comprehensive residual pressure reflection value of the residual pressure recovery equipment, Y2 is the second residual pressure detection factor and value, Y1 is the first residual pressure detection factor and value, T1 is the number of the first series, T2 is the number of the second series, and S is the preset residual pressure detection factor.

6. The method for recovering excess pressure according to claim 5, characterized in that: When the working state data of the synchronous generator is set based on the comprehensive residual pressure reflection value, it includes: Presetting a plurality of selection intervals, wherein each selection interval includes a first preset comprehensive residual pressure reflection value, a second preset comprehensive residual pressure reflection value, an excitation current of a synchronous generator, and a generator speed; Traversing the comprehensive residual pressure reflection value in all selection intervals to determine a selection interval corresponding to the comprehensive residual pressure reflection value; The corresponding excitation current and generator speed are extracted from the corresponding selection interval and used as the working state data of the synchronous generator.

7. A system for recovering excess pressure, applied to the method for recovering excess pressure as claimed in any one of claims 1 to 6, characterized in that: include: A receiving module, used for receiving a residual pressure recovery instruction, and deploying a plurality of residual pressure recovery detection points on the residual pressure recovery equipment based on the residual pressure recovery instruction; A calculation module, used for collecting residual pressure data of each residual pressure recovery detection point, and calculating a residual pressure detection factor of the corresponding residual pressure recovery detection point based on the residual pressure data; A screening module, used for screening all the residual pressure recovery detection points based on the residual pressure detection factor to obtain a target residual pressure recovery detection point; A conversion module, used for introducing the generated residual pressure into the pressure energy conversion device, and converting the residual pressure into mechanical energy to be recycled based on the pressure energy conversion device; The recovery module is used to set the working state data of the synchronous generator according to all target residual pressure recovery detection points, convert the mechanical energy to be recovered into electrical energy based on the synchronous generator, and connect the electrical energy to the grid according to the grid-connected controller.

8. The system for recovering excess pressure according to claim 7, characterized in that: Also includes: A first extraction module, configured to analyze the residual pressure recovery instruction and extract corresponding unique identification information, wherein the unique identification information includes a first timestamp, an instruction content hash value, and a serial number; an identification traversal module, used for traversing the unique identification information in the identification information database, and if the unique identification information is not in the identification information database, determining that the residual pressure recovery instruction is a new instruction, executing an instruction receiving operation, and storing the unique identification information in the identification information database; A second extraction module, configured to extract a second timestamp of identification information corresponding to the unique identification information if the unique identification information is in the identification information database; A first judgment module, configured to calculate a receiving time interval based on the first timestamp and the second timestamp, and generate a suspected duplicate instruction if the receiving time interval is less than or equal to a preset receiving time interval; The second judgment module is used to execute the instruction receiving operation if the receiving time interval is greater than the preset receiving time interval.

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