Method and device for determining facility expansion plan for natural gas pipeline network

Abstract

The present application provides a method, device, computer equipment and storage medium for determining a facility expansion plan for a natural gas pipeline network, and belongs to the field of oil and gas transmission technology. The method includes: establishing an existing pipeline network model of the natural gas pipeline network, determining whether the natural gas pipeline network has the capacity for increased transmission, and on this basis, establishing a pipeline network model after the increase in transmission in combination with the transmission volume of the newly added users, finding out the bottleneck point users in the natural gas pipeline network after the increase in transmission by calculation, generating multiple alternative plans based on the bottleneck point users, inputting the multiple alternative plans into the pipeline network model after the increase in transmission for simulation, and being able to obtain a plan that meets the gas demand of all users in the pipeline network after the increase in transmission, and finally determining the plan with the smallest parameters as the target facility expansion plan. The above technical solution not only solves the problem that the gas demand of the bottleneck point users in the natural gas pipeline network after the increase in transmission cannot be met, but also ensures that the target facility expansion plan meets the target realization conditions.

Description

Technical Field

[0001] The present application relates to the field of oil and gas transmission technology, and in particular to a method, device, equipment and storage medium for determining a facility expansion plan for a natural gas pipeline network. Background Art

[0002] With the vigorous development of my country's natural gas industry and the continuous acceleration of natural gas pipeline network construction, the number of natural gas users has increased rapidly. However, since the natural gas pipeline network involves many pipelines and the pipeline connection and operation are complex, when there are new users, the user's gas consumption increases, which will cause some users to have low gas pressure or insufficient gas consumption, and the user's gas demand cannot be met.

[0003] In related technologies, in order to solve the above problems, the gas storage facility is usually expanded, or the peak-shaving mode of the gas storage facility is optimized to adjust the gas consumption of users during peak gas consumption periods.

[0004] However, expanding gas storage capacity during this process is limited by its limited capacity, long construction cycles, and the difficulty of locating the site near user markets, making it difficult to address these issues. Optimizing gas storage's peak-shaving mode can only address the low gas pressure or insufficient gas volume experienced by existing users in the natural gas pipeline network during peak demand periods, and remains unable to address these issues when new users are added. Summary of the Invention

[0005] The embodiments of the present application provide a method, apparatus, device, and storage medium for determining a facility expansion plan for a natural gas pipeline network, which can solve the problem of low gas pressure or insufficient gas volume for some users after new users are added to the natural gas pipeline network. The technical solution is as follows:

[0006] In one aspect, a method for determining a facility expansion plan for a natural gas pipeline network is provided, the method comprising:

[0007] Establish an existing pipeline network model based on the current delivery volume of existing users, the planned delivery volume of existing users, the number of gas sources, the gas source parameters of each gas source, and the facility data of the existing pipeline network;

[0008] Establishing a pipeline network model after increased transmission based on the existing pipeline network model and the transmission volume of the newly added users;

[0009] Obtaining gas usage information of users in the pipeline network after the increased transmission based on the pipeline network model after the increased transmission;

[0010] Determining bottleneck users in the pipeline network after the increased transmission based on gas usage information of users in the pipeline network after the increased transmission and gas usage reference information of users, wherein the bottleneck users refer to users whose gas demand cannot be met;

[0011] generating a plurality of first facility addition plans based on the bottleneck point users;

[0012] Based on the pipeline network model after the increased transmission, a target facility addition plan is determined from the multiple first facility addition plans, and the target facility addition plan meets the target achievement conditions.

[0013] In another aspect, a device for determining a facility expansion plan for a natural gas pipeline network is provided, wherein the device comprises:

[0014] A model building module is used to build an existing pipeline network model based on the current delivery volume of existing users, the planned delivery volume of existing users, the number of gas sources, the gas source parameters of each gas source, and the facility data of the existing pipeline network;

[0015] The model building module is further used to build a pipeline network model after the increase in transmission based on the existing pipeline network model and the transmission volume of the newly added users;

[0016] A gas usage determination module, configured to obtain gas usage information of users in the pipeline network after the increased transmission based on the pipeline network model after the increased transmission;

[0017] A user determination module is configured to determine bottleneck users in the pipeline network after the increased transmission based on the gas usage information of the users in the pipeline network after the increased transmission and the gas usage reference information of the users, wherein the bottleneck users are users whose gas demand cannot be met;

[0018] A plan generating module, configured to generate a plurality of first facility addition plans based on the bottleneck point users;

[0019] A scheme determination module is used to determine a target facility addition scheme from the multiple first facility addition schemes based on the pipeline network model after the increase in transmission, and the target facility addition scheme meets the target achievement conditions.

[0020] In an optional implementation, the gas usage information includes a calculated gas usage value and a calculated gas pressure value, the gas usage reference information includes a gas demand and a required minimum pressure, and the user determination module is configured to:

[0021] When the calculated gas consumption value of the first user is less than the gas demand, the first user is determined to be a bottleneck user;

[0022] When the calculated gas pressure of the second user is less than the required minimum pressure, the second user is determined to be a bottleneck user;

[0023] When the calculated gas consumption value and the calculated gas pressure value of the third user are respectively less than the gas demand and the required minimum pressure, the third user is determined to be a bottleneck user.

[0024] In an optional implementation, the solution determination module is configured to:

[0025] Based on the pipeline network model after the increase in transmission, the generated multiple first facility addition plans are simulated to obtain gas usage information of users at bottleneck points corresponding to the first facility addition plans;

[0026] Determining a plurality of second facility addition plans based on the gas usage information and gas usage reference information of the bottleneck point users corresponding to the plurality of first facility addition plans, wherein the second facility addition plans can meet the gas usage needs of the bottleneck point users;

[0027] A target facility addition plan is determined from the plurality of second facility addition plans, where the target facility addition plan meets the target achievement condition.

[0028] On the other hand, a computer device is provided, which includes a processor and a memory, wherein the memory is used to store at least one segment of program code, and the at least one segment of program code is loaded and executed by the processor to implement the operations performed in the method for determining a facility expansion plan for a natural gas pipeline network in an embodiment of the present application.

[0029] On the other hand, a computer-readable storage medium is provided, in which at least one program code is stored. The at least one program code is loaded and executed by the processor to implement the operations performed in the method for determining a facility addition plan for a natural gas pipeline network in an embodiment of the present application.

[0030] The beneficial effects of the technical solution provided by the embodiments of the present application are:

[0031] In an embodiment of the present application, a method for determining a facility addition plan for a natural gas pipeline network is provided. By establishing an existing pipeline model of the natural gas pipeline network in a target area, it is determined whether the natural gas pipeline network in the target area has the capacity for increased transmission. On this basis, a pipeline network model after the increase is established in combination with the transmission volume of new users, and bottleneck users in the natural gas pipeline network after the increase are found through calculation. Multiple alternative plans are generated based on the bottleneck users. Furthermore, the multiple alternative plans are input into the pipeline network model after the increase for simulation, and a plan that meets the gas demand of all users in the pipeline network after the increase can be obtained. Then, the plan with the smallest achieved parameters is determined as the target facility addition plan. This not only solves the problem of unmet gas demand of bottleneck users in the natural gas pipeline network after the increase, but also ensures that the target facility addition plan meets the target achievement conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application, 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 application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0033] Figure 1 This is a flow chart of a method for determining a facility expansion plan for a natural gas pipeline network according to an embodiment of the present application;

[0034] Figure 2 This is a flow chart of another method for determining a facility expansion plan for a natural gas pipeline network provided in an embodiment of the present application;

[0035] Figure 3 This is an example flow chart of a method for determining a facility expansion plan for a natural gas pipeline network provided in accordance with an embodiment of the present application;

[0036] Figure 4 This is a block diagram of a device for determining a facility expansion plan for a natural gas pipeline network according to an embodiment of the present application;

[0037] Figure 5 It is a structural diagram of a computer device provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0038] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0039] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numbers in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present application. Rather, they are merely examples of methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0040] Figure 1 This is a flow chart of a method for determining a facility expansion plan for a natural gas pipeline network according to an embodiment of the present application. Figure 1 As shown, in the embodiment of the present application, the method for determining the facility expansion plan of the natural gas pipeline network is described by taking the application of computer equipment as an example. The method includes the following steps:

[0041] 101. Establish an existing pipeline network model based on the current transmission volume of existing users, the planned transmission volume of existing users, the number of gas sources, the gas source parameters of each gas source, and the facility data of the existing pipeline network.

[0042] 102. Based on the existing pipeline network model and the transmission volume of new users, establish a pipeline network model after the increase in transmission volume.

[0043] Optionally, before establishing a pipeline network model after the increase in transmission based on the existing pipeline network model and the newly added user transmission volume, the following steps are included:

[0044] According to the existing pipeline network model, obtain the gas usage information of users in the existing pipeline network;

[0045] Based on the gas usage information of users in the existing pipeline network and the gas usage reference information of users, determine whether the existing pipeline network has the capacity to increase transmission;

[0046] If the existing pipeline network has the capacity to increase transmission, the step of establishing a pipeline network model after the increase in transmission is performed based on the existing pipeline network model and the transmission volume of the newly added users.

[0047] 103. According to the pipeline network model after the increased transmission, obtain the gas usage information of the users in the pipeline network after the increased transmission.

[0048] Optionally, according to the pipeline network model after the increased transmission, the gas usage information of users in the pipeline network after the increased transmission is obtained, including:

[0049] Based on the natural gas pipeline network simulation software, the gas consumption and gas pressure of each user in the pipeline network model after the increase in transmission are calculated.

[0050] 104. Based on the gas usage information of users in the pipeline network after the increased transmission and the gas usage reference information of the users, determine the bottleneck users in the pipeline network after the increased transmission. The bottleneck users are users whose gas demand cannot be met.

[0051] Optionally, the gas usage information includes a calculated gas usage value and a calculated gas pressure value, and the gas usage reference information includes a gas demand and a required minimum pressure. Based on the gas usage information of users in the pipeline network after the increased transmission and the gas usage reference information of the users, the bottleneck users in the pipeline network after the increased transmission are determined to include:

[0052] When the calculated gas consumption value of the first user is less than the gas demand, the first user is determined to be a bottleneck user;

[0053] When the calculated gas pressure of the second user is less than the required minimum pressure, the second user is determined to be a bottleneck user;

[0054] When the calculated gas consumption value and the calculated gas pressure value of the third user are respectively less than the gas demand and the required minimum pressure, the third user is determined to be a bottleneck user.

[0055] 105. Generate multiple first facility addition plans based on the bottleneck point user.

[0056] 106. Based on the pipeline network model after the increase in transmission, determine a target facility addition plan from multiple first facility addition plans, where the target facility addition plan meets the target achievement conditions.

[0057] Optionally, based on the pipeline network model after the increased transmission, a target facility addition plan is determined from a plurality of first facility addition plans, and the target facility addition plan meets the target achievement conditions including:

[0058] Based on the pipeline network model after the increase in transmission, the generated multiple first facility addition plans are simulated to obtain gas usage information of bottleneck point users corresponding to the multiple first facility addition plans;

[0059] Determining a plurality of second facility addition plans based on the gas usage information and gas usage reference information of the bottleneck point users corresponding to the plurality of first facility addition plans, wherein the plurality of second facility addition plans can meet the gas usage demands of the bottleneck point users;

[0060] A target facility addition plan is determined from the plurality of second facility addition plans, and the target facility addition plan meets the target achievement condition.

[0061] In an embodiment of the present application, a method for determining a facility addition plan for a natural gas pipeline network is provided. By establishing an existing pipeline model of the natural gas pipeline network in a target area, it is determined whether the natural gas pipeline network in the target area has the capacity for increased transmission. On this basis, a pipeline network model after the increase is established in combination with the transmission volume of new users, and bottleneck users in the natural gas pipeline network after the increase are found through calculation. Multiple alternative plans are generated based on the bottleneck users. Furthermore, the multiple alternative plans are input into the pipeline network model after the increase for simulation, and a plan that meets the gas demand of all users in the pipeline network after the increase can be obtained. Then, the plan with the smallest achieved parameters is determined as the target facility addition plan. This not only solves the problem of unmet gas demand of bottleneck users in the natural gas pipeline network after the increase, but also ensures that the target facility addition plan meets the target achievement conditions.

[0062] Figure 2 is an implementation flow chart of another method for determining a facility expansion plan for a natural gas pipeline network provided in an embodiment of the present application, such as Figure 2 As shown, in the embodiment of the present application, the application is described by taking the application of computer equipment as an example. The method includes the following steps:

[0063] 201. The computer device obtains the current input volume of existing users, the planned input volume of existing users, and the input volume of new users.

[0064] In this embodiment of the present application, the current gas flow for existing users refers to the total gas consumption of all existing users in the natural gas pipeline network in the target area. The planned gas flow for existing users refers to the planned gas flow for existing users in the natural gas pipeline network in the target area over a specific period of time. For example, the planned gas flow for existing users refers to the planned gas flow for existing users over the next five years. The gas flow for new users refers to the total projected gas consumption after adding new natural gas users to the existing users.

[0065] In an optional implementation, the process of obtaining the current transmission volume of the above-mentioned existing users includes: a computer device obtains regional information of the target area, uses the regional information as an index, queries the user data information of the natural gas pipeline network in the target area in the data resource library of the natural gas pipeline network, obtains the number of existing users in the natural gas pipeline network in the target area and the gas consumption of each user, and adds up the gas consumption of each user to obtain the current transmission volume of the existing users.

[0066] In an optional implementation, the process of obtaining the planned gas output of existing users includes: a computer device obtains regional information of a target area, uses the regional information as an index, queries the user data information of the natural gas pipeline network in the target area in a data resource library of the natural gas pipeline network, obtains the number of existing users in the natural gas pipeline network in the target area and the planned gas consumption of each user, and adds up the planned gas consumption of each user to obtain the planned output of the existing users.

[0067] In an optional implementation, the above-mentioned process of obtaining the transmission volume of new users includes: the computer equipment obtains the number of new users to be added in the natural gas pipeline network in the target area, as well as the estimated gas consumption of each new user, and adds the estimated gas consumption of each new user and the current transmission volume of existing users to obtain the estimated total gas consumption after adding new natural gas users on the basis of existing users, that is, the transmission volume of new users.

[0068] 202. The computer device obtains the quantity of gas sources and gas source parameters of each gas source.

[0069] In the embodiment of the present application, the gas source may be gas field gas extracted from a gas well in the target area, associated petroleum gas extracted along with petroleum, or coal mine gas extracted from underground coal seams during coal mining, etc. Gas source parameters are used to describe the gas supply conditions of the gas source, and the gas source parameters include gas supply volume, gas supply temperature, and gas supply pressure.

[0070] In an optional implementation method, a computer device obtains regional information of a target area, uses the regional information as an index, and queries the gas source data information of the natural gas pipeline network in the target area in a data resource library of the natural gas pipeline network to obtain the number of existing gas sources in the target area and the gas source parameters of each gas source.

[0071] 203. Computer equipment obtains data on existing facilities in the natural gas pipeline network.

[0072] In this embodiment of the present application, the existing facility data in the natural gas pipeline network refers to the specific parameters of the existing hardware facilities in the natural gas pipeline network and the minimum pressure required for each user to use gas. Optionally, the specific parameters of the existing hardware facilities include parameter information such as the length, number, diameter, and wall thickness of the gas transmission pipelines in the existing pipeline network, as well as parameter information such as the number of existing compressors and the location and number of existing valve chambers. The minimum pressure required for each user to use gas refers to a preset threshold value set based on the specific parameters of the existing hardware facilities.

[0073] In an optional implementation method, a computer device obtains regional information of a target area, uses the regional information as an index, and queries the existing facility data of the natural gas pipeline network in the target area in a data resource library of the natural gas pipeline network to obtain the specific parameters of the existing hardware facilities in the natural gas pipeline network in the target area and the minimum pressure required for gas use by each user.

[0074] It should be noted that in the embodiment of the present application, the computer device acquires information in the order from front to back according to steps 201 to 203. In an optional implementation, the computer device may acquire information in parallel according to steps 201 to 203. In another optional implementation, the computer device may acquire information in any order according to steps 201 to 203. This embodiment of the present application does not impose any specific limitations on this.

[0075] 204. The computer equipment establishes an existing pipeline network model based on the current transmission volume of existing users, the planned transmission volume of existing users, the number of gas sources, the gas source parameters of each gas source and the existing facility data.

[0076] In this embodiment of the present application, the computer device, based on the natural gas pipeline network simulation software, establishes a model of the existing pipeline network based on all the information obtained in steps 201 to 203. Natural gas pipeline network simulation software can analyze and process actual systems using models of real systems, and is a decision-making tool for natural gas pipeline network design, scheduling, operation, and management.

[0077] In an optional implementation, the natural gas pipeline network simulation software is SPS (Synergi Pipeline Simulator) software, which optimizes pipeline design through simulation technology and can perform detailed design of pipelines, equipment and operating procedures.

[0078] In another optional implementation, the natural gas pipeline network simulation software is Synergi Gas software, which can be used for natural gas pipeline design and analysis, as well as hydraulic condition analysis of urban gas pipeline networks with a large number of pipeline nodes.

[0079] 205. The computer device obtains gas usage information of users in the existing pipeline network based on the existing pipeline network model.

[0080] In an embodiment of the present application, the computer equipment calculates the gas consumption and gas pressure of each user in the existing pipeline network model based on the natural gas pipeline network simulation software, that is, the gas consumption information of each user in the existing pipeline network.

[0081] In an optional implementation, a gas pipeline in a natural gas pipeline network in a target area is divided into multiple segments based on users as nodes. Based on this, a process in which a computer device calculates a gas consumption value and a gas pressure value for each user includes:

[0082] The computer equipment uses formula (1) based on the flow of each section in the natural gas pipeline network in the target area to obtain the node flow of each node between each section, that is, the calculated gas consumption value of the user corresponding to each node. Formulas (2) and (3) are used to calculate the pressure loss of each section in the natural gas pipeline network to obtain the calculated gas pressure value of each user. Among them, the flow in the above process refers to the natural gas transmission volume. The specific calculation formulas (1) to (3) are:

[0083]

[0084] Where: A is the basic correlation matrix of the natural gas pipeline network diagram;

[0085] Q j is the flow rate of pipe section j, j = 1, 2, ..., P;

[0086] q i is the node flow of node i between pipe segments, i = 1, 2, ..., M;

[0087]

[0088] Where: B is the basic loop matrix of the natural gas pipeline network diagram;

[0089] h j = is the pressure loss of pipe section j, j = 1, 2, ..., P;

[0090] 0 is the 0 vector, that is, 0 = (0, 0, ..., 0) T ;

[0091] h=RQ 2-m (3)

[0092]

[0093] Where:

[0094]

[0095] R is a coefficient related to the internal friction coefficient, fluid properties, pipe diameter, and length of the gas pipeline in the natural gas pipeline network;

[0096] m is the flow index, m=0~1.

[0097] 206. The computer device determines whether the existing pipeline network has the ability to increase gas transmission based on the gas usage information of the users in the existing pipeline network and the gas usage reference information of the users. If so, execute steps 207 to 2013. If not, end the processing flow.

[0098] In an embodiment of the present application, the gas usage information of users in the existing pipeline network refers to the calculated gas usage value and the calculated gas pressure value of each user calculated from the above step 205, and the gas usage reference information of the users refers to the gas demand and the required minimum pressure of each user. Among them, the gas demand of each user is the gas usage of each user in the natural gas pipeline network of the target area, and the required minimum pressure of each user is a preset threshold. When the calculated gas usage value of a certain user is consistent with the gas demand, and the calculated gas pressure value of the user is greater than the required minimum pressure, it means that the gas demand of the user can be met. That is, the computer device can determine whether the gas demand of each user in the natural gas pipeline network of the target area is met based on the obtained gas usage information of each user, thereby determining whether the natural gas pipeline network in the target area has the capacity to increase transmission.

[0099] When the computer device determines that the natural gas pipeline network in the target area has the capacity to increase transmission, the following steps 207 to 2013 are executed. When the computer device determines that the natural gas pipeline network in the target area does not have the capacity to increase transmission, the process ends.

[0100] 207. The computer equipment establishes a pipeline network model after the increase in transmission based on the existing pipeline network model and the transmission volume of the newly added users.

[0101] In an embodiment of the present application, a computer device, based on natural gas pipeline network simulation software, inputs the newly added user's flow rate into an existing pipeline network model to establish a pipeline network model after the increased flow rate. In an optional implementation, the computer device replaces the existing user's planned flow rate in the existing pipeline network model with the newly added user's flow rate to obtain the pipeline network model after the increased flow rate. By replacing the existing user's planned flow rate, the pipeline network model after the increased flow rate can be directly derived from the existing pipeline network model, avoiding the need to regenerate the pipeline network model and conserving computer computing resources.

[0102] 208. The computer device obtains gas usage information of users in the pipeline network after the increase in transmission based on the pipeline network model after the increase in transmission.

[0103] In an embodiment of the present application, the computer equipment calculates the gas consumption and gas pressure of each user in the pipeline model after the increased transmission based on the natural gas pipeline network simulation software, and obtains the gas consumption information of each user in the pipeline network after the increased transmission.

[0104] In an optional implementation, the process of the computer device calculating the gas consumption and gas pressure of each user in the pipeline network after the increased transmission is consistent with the calculation process in the above step 205, so it is not repeated here.

[0105] 209. The computer device determines the bottleneck users in the pipeline network after the increase in gas flow based on the gas usage information of the users in the pipeline network after the increase in gas flow and the gas usage reference information of the users. The bottleneck users are users whose gas demand cannot be met.

[0106] In this embodiment of the present application, the gas usage information of users in the pipeline network after the increased transmission refers to the calculated gas usage and gas pressure values ​​of each user calculated in step 208 above, and the user's gas usage reference information refers to the gas demand and minimum required pressure of each user. The gas demand of each user includes the gas usage of each existing user in the natural gas pipeline network in the target area and the gas usage of each newly added user, and the minimum required pressure of each user is a preset threshold.

[0107] In an optional implementation, the computer device determines, based on gas usage information and reference gas usage information of users in the pipeline network after the augmentation, the process of identifying bottleneck users in the pipeline network after the augmentation, including: when a user's calculated gas usage is consistent with the gas demand, and the user's calculated gas pressure is greater than the required minimum pressure, the user's gas demand can be met. When a user's calculated gas usage is less than the gas demand, or the user's calculated pressure is less than the required minimum pressure, or the user's calculated gas pressure and calculated gas pressure are respectively less than the gas demand and the required minimum pressure, the user's gas demand cannot be met, that is, the user is a bottleneck user in the natural gas pipeline network after the augmentation.

[0108] 210. The computer device generates a plurality of first facility addition plans based on the users at the bottleneck points in the pipeline network after the increased transmission.

[0109] In an embodiment of the present application, the computer device generates multiple first facility expansion plans based on the method of building new pipelines and the method of adding compressors according to the bottleneck point users in the pipeline network after the increase in transmission.

[0110] For example, the generated multiple first facility expansion plans include the following: building new pipelines in areas where bottleneck users are concentrated; adding compressors between every two bottleneck users; and combining building new pipelines and adding compressors. This application does not impose any specific restrictions on the method for generating the multiple first facility expansion plans.

[0111] 211. The computer device simulates the generated multiple first facility addition plans through the pipeline network model after the increase in transmission, and obtains gas usage information of the bottleneck point users corresponding to each first facility addition plan.

[0112] In this embodiment of the present application, a computer device uses natural gas pipeline network simulation software to input multiple generated first facility expansion plans into a post-increase pipeline network model, perform simulations, and obtain gas usage information for bottleneck users corresponding to each plan. This gas usage information includes calculated gas usage and pressure values ​​for each bottleneck user.

[0113] 212. The computer device determines multiple second facility addition plans based on the gas usage information and gas usage reference information of the bottleneck point users corresponding to the multiple first facility addition plans.

[0114] In an embodiment of the present application, the computer device determines whether the gas demand of the bottleneck point user corresponding to each first facility addition plan can be met based on the gas usage information of the bottleneck point users corresponding to the multiple first facility addition plans and the gas usage reference information of the bottleneck point users. The specific determination method is consistent with the method for determining whether the gas demand of the user can be met in step 209, so it will not be repeated here. When the gas demand of a bottleneck point user in a certain first facility addition plan cannot be met, the first facility addition plan is filtered out. When the gas demand of all bottleneck point users in a certain first facility addition plan can be met, the first facility addition plan is retained. The retained multiple first facility addition plans are used as multiple second facility addition plans, and the multiple second facility addition plans are plans that can meet the gas demand of the bottleneck point users in the pipeline network after the increase.

[0115] By simulating multiple first facility addition plans, plans that cannot meet gas demand are screened out, thereby eliminating some unusable plans, so that the plans determined subsequently can guarantee the gas demand of new users.

[0116] 213. The computer device determines a target facility addition plan from a plurality of second facility addition plans, and the target facility addition plan meets the target achievement conditions.

[0117] In an embodiment of the present application, a computer device obtains implementation parameters of each second facility addition plan based on multiple second facility addition plans, and determines a target facility addition plan based on the implementation parameters, wherein the target facility addition plan meets a target implementation condition, wherein the target implementation condition is that the facility addition plan has the minimum implementation parameters.

[0118] It should be noted that in the embodiments of the present application, the computer device can determine the target facility expansion plan based on a variety of different considerations, such as the implementation cost of the plan, application prospects, implementation difficulty, and approval difficulty. The computer device can calculate the implementation parameters of the plan based on a single consideration, or it can calculate multiple values ​​based on different considerations, and finally determine the target plan by combining the implementation parameters. The embodiments of the present application do not specifically limit the content involved in the plan implementation parameters, nor the calculation method of the implementation parameters.

[0119] The following describes the process of determining target facility expansion plans for computer equipment, taking cost as the sole consideration as an example:

[0120] The computer device obtains information about the additional hardware facilities and construction costs required for each second facility addition plan, calculates the implementation cost of each second facility addition plan, and uses the cost as an implementation parameter for each second facility addition plan. Based on the implementation parameters, the second facility addition plan with the smallest implementation parameter is determined as the target facility addition plan, i.e., the target facility addition plan with the lowest implementation cost.

[0121] The following describes the process of determining a target facility expansion plan for computer equipment, taking implementation cost, application prospects, and implementation difficulty as comprehensive considerations.

[0122] Step 1: The computer equipment sets the first weight, second weight and third weight respectively based on the implementation cost, application prospects and implementation difficulty of the facility expansion plan. In a possible example, considering that the implementation cost of the plan has a greater impact on the implementation of the plan, the first weight can be 0.6, and the second weight and the third weight can be 0.2. The embodiment of the present application does not impose specific restrictions on the values ​​of each weight.

[0123] Step 2: Calculate a first value based on the additional hardware facility information required for each second facility addition plan and the construction cost information. The first value is used to represent the implementation cost required to implement each second facility addition plan. The smaller the first value, the lower the implementation cost of the corresponding plan.

[0124] Step 3: Calculate a second value based on the area covered by each second facility addition plan and the predicted number of new users in the area. The second value is used to represent the application prospect of each second facility addition plan. The smaller the second value, the broader the application prospect of the corresponding plan.

[0125] Step 4: Based on the construction difficulty of each second facility addition plan, a third value is calculated. The third value is used to represent the difficulty of implementing each second facility addition plan. The smaller the third value, the lower the construction difficulty of the corresponding plan.

[0126] Step 5: The computer equipment calculates the implementation parameters of each second facility addition plan based on the first value, second value and third value and the corresponding weight of each second facility addition plan, and determines the second facility addition plan with the lowest implementation parameters as the target facility addition plan. That is, the implementation cost, application prospects and implementation difficulty of each second facility addition plan are comprehensively considered. While ensuring that the implementation cost of the target facility addition plan is low, the target facility addition plan has the broadest application prospects and the lowest implementation difficulty.

[0127] In an embodiment of the present application, a method for determining a facility addition plan for a natural gas pipeline network is provided. By establishing an existing pipeline model of the natural gas pipeline network in a target area, it is determined whether the natural gas pipeline network in the target area has the capacity for increased transmission. On this basis, a pipeline network model after the increase is established in combination with the transmission volume of new users, and bottleneck users in the natural gas pipeline network after the increase are found through calculation. Multiple alternative plans are generated based on the bottleneck users. Furthermore, the multiple alternative plans are input into the pipeline network model after the increase for simulation, and a plan that meets the gas demand of all users in the pipeline network after the increase can be obtained. Then, the plan with the smallest achieved parameters is determined as the target facility addition plan. This not only solves the problem of unmet gas demand of bottleneck users in the natural gas pipeline network after the increase, but also ensures that the target facility addition plan meets the target achievement conditions.

[0128] The following is an example of a method for determining a facility expansion plan for a natural gas pipeline network provided in an embodiment of the present application, based on the actual situation of the natural gas pipeline network. For example, the existing gas consumption of users in a natural gas pipeline network is 7483.1MMSCFD, and the gas consumption after the increase is 9374.4MMSCFD. The bottleneck point users of the natural gas pipeline network after the increase are analyzed, and a facility expansion plan that meets the conditions for achieving the goal is determined. Figure 3 The specific steps are as follows:

[0129] 301. The computer equipment establishes an existing pipeline network model based on the current transmission volume of existing users, the planned transmission volume of existing users, the number of gas sources, the gas source parameters of each gas source and the existing facility data.

[0130] In this step, the computer obtains regional information for the target area and, using this regional information as an index, searches the natural gas pipeline network's data repository. The database finds 99 users in the target area, with a current gas flow of 7,483.1 MMSCFD and a planned five-year gas flow of 10,000.0 MMSCFD. The natural gas pipeline network contains eight gas sources, each with its own gas source parameters shown in Table 1. This includes existing network facility data, including: a total length of 3,200 km, pipeline diameters ranging from 4 to 52 inches, and gas pressures of 2.5 to 3.0 MPa for each user.

[0131] Table 1

[0132] Serial number Gas source Gas supply pressure, MPa Gas supply, MMSCFD Supply air temperature, ℃ 1 Gas source 1 3.9 -- 35.8 2 Gas source 2 3.9 -- 35.8 3 Gas source 3 3.9 -- 35.8 4 Gas source 4 3.9 -- 35.8 5 Gas source 5 3.9 -- 35.8 6 Gas source 6 3.9 -- 35.8 7 Gas source 7 -- 1200 35.8 8 Gas source 8 5.7 2092 35.8

[0133] The computer equipment is based on the natural gas pipeline network simulation software, namely SPS (Synergi Pipeline Simulator) software, and combines the data obtained from the data resource library of the natural gas pipeline network to establish the existing pipeline network model.

[0134] 302. The computer device obtains gas usage information of users in the existing pipeline network based on the existing pipeline network model.

[0135] In this step, the computer, using natural gas pipeline network simulation software, calculates the gas usage and pressure for each user in the existing pipeline network model. This represents the gas usage information for each user in the existing pipeline network. The specific calculation method is the same as in step 205 and will not be further described here. The resulting gas usage information for each user is shown in Table 2.

[0136] Table 2

[0137]

[0138]

[0139] Based on the calculation results in Table 2, it can be concluded that the calculated gas pressure of each existing user in the natural gas pipeline network exceeds the required minimum pressure of 1-28 barg, and the calculated gas consumption of each user is consistent with the gas demand. This shows that the current natural gas pipeline network has the capacity to increase transmission.

[0140] 303. The computer equipment establishes the pipeline network model after the increase based on the existing pipeline network model and the new user transmission volume of 9374.4MMSCFD.

[0141] In this step, the computer equipment uses SPS (Synergi Pipeline Simulator) software based on the existing pipeline network model to replace the existing user's planned flow rate of 10,000.0 MMSCFD with the newly added user's flow rate of 9,374.4 MMSCFD, thus establishing the pipeline network model after the increase in flow rate.

[0142] 304. The computer device obtains gas usage information of users in the pipeline network after the increased transmission based on the pipeline network model after the increased transmission.

[0143] In this step, the computer uses the SPS (Synergi Pipeline Simulator) software to calculate the gas consumption and pressure for each user in the pipeline network model after the increased gas flow, thereby obtaining gas usage information for each user in the pipeline network after the increased gas flow. The specific calculation method is the same as that in step 205 above.

[0144] 305. The computer device determines the bottleneck users in the pipeline network after the increase in gas flow based on the gas usage information of the users in the pipeline network after the increase in gas flow and the gas usage reference information of the users.

[0145] In this step, the computer device determines the bottleneck point users in the pipeline network after the increased transmission based on the calculated gas consumption value and the calculated gas pressure value of each user calculated in the above step 304, and the gas consumption reference information of the user. The specific process is: when the calculated gas consumption value of a certain user is consistent with the gas demand, and the calculated gas pressure value of the user is greater than the required minimum pressure, the gas demand of the user can be met. When the calculated gas consumption value of a certain user is less than the gas demand, or the calculated pressure of a certain user is less than the required minimum pressure, or the calculated gas pressure value and the calculated gas pressure value of a certain user are respectively less than the gas demand and the required minimum pressure, the gas demand of the user cannot be met, that is, the user is a bottleneck point user in the natural gas pipeline network after the increased transmission. Table 3 shows the bottleneck point users whose gas demand cannot be met obtained by analysis.

[0146] Table 3

[0147]

[0148]

[0149] Table 3 shows that the gas consumption of five users (1#, 6#, 20#, 51#, and 60#) fails to meet the requirements. Furthermore, the gas consumption and pressure of three users (63#, 64#, and 67#) fail to meet the requirements. These users are the bottlenecks in the natural gas pipeline network after the increase in transmission.

[0150] 306. The computer equipment generates three plans for adding facilities based on the users at the bottleneck points in the pipeline network after the increase in transmission.

[0151] In this step, the computer equipment generates three facility expansion plans based on the bottleneck users in the pipeline network after the increase in transmission. These plans are based on the method of using new pipelines or adding compressors, as shown in Tables 4 to 6.

[0152] Table 4

[0153] Serial number content 1 A new compressor unit was built at the first station, and the calculated shaft power of the compressor was 27.4MW. 2 A new 220km, 52-inch pipeline will be built from the first station to connect to the 3# valve chamber of the existing TFP pipeline. 3 A new 77km, 48-inch pipeline will be built from the 6# valve room of the TFP pipeline to the S area of ​​the existing pipeline. 4 A new 44km, 30-inch pipeline will be built parallel to the existing 20-inch pipeline in Area R.

[0154] Table 5

[0155] Serial number content 1 A new compressor unit is built at the intermediate station T, and the calculated shaft power of the compressor is 29.4MW. 2 A new 220km, 52-inch pipeline will be built from the first station to connect to the 3# valve room of the existing TFP pipeline. 3 A new 77km, 48-inch pipeline will be built from the 6# valve room of the TFP pipeline to the S area of ​​the existing pipeline. 4 A new 44km, 30-inch pipeline will be built parallel to the existing 20-inch pipeline in Area R.

[0156] Table 6

[0157] Serial number content 1 A new compressor unit is built at the intermediate station T, and the calculated shaft power of the compressor is 32 MW. 2 Two new 168km, 56-inch trunk lines will be built from H Station to K Station. 3 A new 77km, 48-inch pipeline will be built from the 6# valve room of the TFP pipeline to the S area of ​​the existing pipeline. 4 A new 44km, 30-inch pipeline will be built parallel to the existing 20-inch pipeline in Area R.

[0158] 307. Based on the pipeline network model after the increase in transmission, the computer equipment determines the target facility addition plan from the three facility addition plans, and the target facility addition plan meets the conditions for achieving the target.

[0159] In this step, the computer uses natural gas pipeline network simulation software to input the three facility expansion plans generated above into the post-transmission pipeline network model. The simulation then generates gas usage information for users at bottleneck points corresponding to each plan. Comparing this information with the users' reference gas usage data, the computer concludes that all three plans can meet the gas demand of users at bottleneck points in the post-transmission natural gas pipeline network. Based on this information, the computer calculates the implementation costs of the three plans. The results show that the plan shown in Table 4 requires the lowest calculated compressor shaft power and the shortest new pipeline length. The plan calculated by the computer in Table 4 has the lowest implementation cost, meaning it has the lowest implementation parameters. Therefore, the plan in Table 4 is selected as the target facility expansion plan.

[0160] In an embodiment of the present application, taking actual conditions as an example, a method for determining a facility addition plan for a natural gas pipeline network is provided. By establishing an existing pipeline model of the natural gas pipeline network in a target area, it is determined whether the natural gas pipeline network in the target area has the capacity for increased transmission. On this basis, combined with the transmission volume of new users, a pipeline network model after increased transmission is established, and bottleneck users in the natural gas pipeline network after increased transmission are found through calculation. Multiple alternative plans are generated based on the bottleneck users. Furthermore, the multiple alternative plans are input into the pipeline network model after increased transmission for simulation, and a plan that meets the gas demand of all users in the pipeline network after increased transmission can be obtained. Then, the plan with the smallest achieved parameters is determined as the target facility addition plan. This not only solves the problem of unmet gas demand of bottleneck users in the natural gas pipeline network after increased transmission, but also ensures that the target facility addition plan meets the target achievement conditions.

[0161] Figure 4 This is a block diagram of a device for determining a facility expansion plan for a natural gas pipeline network according to an embodiment of the present application, which is used to execute the steps of the method for determining a facility expansion plan for a natural gas pipeline network, see Figure 4 The device includes: a model building module 401, a gas usage determination module 402, a user determination module 403, a solution generation module 404 and a solution determination module 405.

[0162] The model building module 401 is used to build an existing pipeline network model based on the current delivery volume of existing users, the planned delivery volume of existing users, the number of gas sources, the gas source parameters of each gas source, and the facility data of the existing pipeline network;

[0163] The model building module 401 is further used to build a pipeline network model after the increase in transmission based on the existing pipeline network model and the transmission volume of the newly added users;

[0164] The gas usage determination module 402 is configured to obtain gas usage information of users in the pipeline network after the increased transmission based on the pipeline network model after the increased transmission;

[0165] The user determination module 403 is configured to determine the bottleneck users in the pipeline network after the increased transmission based on the gas usage information of the users in the pipeline network after the increased transmission and the gas usage reference information of the users. The bottleneck users are users whose gas demand cannot be met.

[0166] A plan generating module 404 is configured to generate a plurality of first facility addition plans based on the bottleneck point user;

[0167] The plan determination module 405 is configured to determine a target facility addition plan from a plurality of first facility addition plans based on the pipeline network model after the increase in transmission, where the target facility addition plan meets the target achievement conditions.

[0168] In an optional implementation, the gas usage determination module 402 is further configured to obtain gas usage information of users in the existing pipeline network based on the existing pipeline network model.

[0169] In an optional implementation, the device further includes: a transmission capacity increase judgment module, configured to judge whether the existing pipeline network has transmission capacity increase based on the gas usage information of users in the existing pipeline network and the gas usage reference information of the users;

[0170] If the increased transmission capacity determination module determines that the existing pipeline network has increased transmission capacity, the model establishment module is triggered to execute the step of establishing a pipeline network model after increased transmission based on the existing pipeline network model and the newly added user transmission volume.

[0171] In an optional implementation, the gas usage determination module 402 is configured to:

[0172] Based on the natural gas pipeline network simulation software, the gas consumption and gas pressure of each user in the pipeline network model after the increase in transmission are calculated.

[0173] In an optional implementation, the user determination module 403 is configured to:

[0174] When the calculated gas consumption value of the first user is less than the gas demand, the first user is determined to be a bottleneck user;

[0175] When the calculated gas pressure of the second user is less than the required minimum pressure, the second user is determined to be a bottleneck user;

[0176] When the calculated gas consumption value and the calculated gas pressure value of the third user are respectively less than the gas demand and the required minimum pressure, the third user is determined to be a bottleneck user.

[0177] In an optional implementation, the solution determination module 405 is configured to:

[0178] Based on the pipeline network model after the increase in transmission, multiple generated first facility addition plans are simulated to obtain gas usage information of users at bottleneck points corresponding to the first facility addition plans;

[0179] Determining a plurality of second facility addition plans based on the gas usage information and gas usage reference information of the bottleneck point users corresponding to the plurality of first facility addition plans, wherein the plurality of second facility addition plans can meet the gas usage demand of the bottleneck point users;

[0180] A target facility addition plan is determined from the plurality of second facility addition plans, and the target facility addition plan meets the target achievement condition.

[0181] In an embodiment of the present application, a device for determining a facility addition plan for a natural gas pipeline network is provided. By establishing an existing pipeline model of the natural gas pipeline network in a target area, it is determined whether the natural gas pipeline network in the target area has the capacity for increased transmission. On this basis, a pipeline network model after the increase is established in combination with the transmission volume of new users, and bottleneck users in the natural gas pipeline network after the increase are found through calculation. A plurality of alternative plans are generated based on the bottleneck users. Furthermore, the plurality of alternative plans are input into the pipeline network model after the increase for simulation, and a plan that meets the gas demand of all users in the pipeline network after the increase can be obtained. Then, the plan with the smallest achieved parameters is determined as the target facility addition plan. This not only solves the problem of unmet gas demand of bottleneck users in the natural gas pipeline network after the increase, but also ensures that the target facility addition plan meets the target achievement conditions.

[0182] It should be noted that the apparatus for determining facility expansion plans for a natural gas pipeline network provided in the above-mentioned embodiment uses only the division of the aforementioned functional modules as an example when determining facility expansion plans. In actual applications, the aforementioned functions can be assigned to different functional modules as needed, i.e., the internal structure of the apparatus can be divided into different functional modules to complete all or part of the functions described above. Furthermore, the apparatus for determining facility expansion plans for a natural gas pipeline network provided in the above-mentioned embodiment and the method for determining facility expansion plans for a natural gas pipeline network are conceptually identical. The specific implementation process is detailed in the method embodiment and will not be further elaborated here.

[0183] Figure 5This is a schematic diagram of the structure of a computer device provided in accordance with an embodiment of the present application. The computer device 500 may vary significantly due to different configurations or performance, and may include one or more processors (Central Processing Units, CPUs) 501 and one or more memories 502, wherein the memory 502 stores at least one program code, which is loaded and executed by the processor 501 to implement the method for determining a facility expansion plan for a natural gas pipeline network provided in each of the above-mentioned method embodiments. Of course, the computer device may also have components such as a wired or wireless network interface, a keyboard, and input / output interfaces for input and output. The computer device may also include other components for implementing device functions, which will not be described in detail here.

[0184] An embodiment of the present application also provides a computer-readable storage medium, which is applied to a computer device, and the computer-readable storage medium stores at least one section of program code, which is loaded and executed by a processor to implement the operations performed by the computer device in the method for determining a facility expansion plan for a natural gas pipeline network in the above-mentioned embodiment.

[0185] Those skilled in the art will understand that all or part of the steps to implement the above embodiments may be accomplished by hardware, or by a program to instruct the relevant hardware, and the program may be stored in a computer-readable storage medium, which may be a read-only memory, a disk, or an optical disk, etc.

[0186] The above description is merely an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A method for determining a facility expansion plan for a natural gas pipeline network, characterized in that: include: Establish an existing pipeline network model based on the current delivery volume of existing users, the planned delivery volume of existing users, the number of gas sources, the gas source parameters of each gas source, and the facility data of the existing pipeline network; Establishing a pipeline network model after increased transmission based on the existing pipeline network model and the transmission volume of the newly added users; Obtaining gas usage information of users in the pipeline network after the increased transmission based on the pipeline network model after the increased transmission; Determining bottleneck users in the pipeline network after the increased transmission based on gas usage information of users in the pipeline network after the increased transmission and gas usage reference information of users, wherein the bottleneck users refer to users whose gas demand cannot be met; generating a plurality of first facility addition plans based on the bottleneck point users; Based on the pipeline network model after the increased transmission, a target facility addition plan is determined from the multiple first facility addition plans, and the target facility addition plan meets the target achievement conditions.

2. The method according to claim 1, characterized in that Before establishing a pipeline network model after increased transmission based on the existing pipeline network model and the newly added user transmission volume, the method further includes: Obtaining gas usage information of users in the existing pipeline network according to the existing pipeline network model; Determining whether the existing pipeline network has increased transmission capacity based on the gas usage information of users in the existing pipeline network and the gas usage reference information of the users; If the existing pipeline network has the capacity to increase transmission, the step of establishing a pipeline network model after the increase in transmission according to the existing pipeline network model and the transmission volume of the newly added users is performed.

3. The method according to claim 1, characterized in that The obtaining of gas usage information of users in the pipeline network after the increased transmission based on the pipeline network model after the increased transmission includes: Based on the natural gas pipeline network simulation software, the gas consumption and gas pressure of each user in the pipeline network model after the increase in transmission are calculated.

4. The method according to claim 1, wherein The gas usage information includes a calculated gas usage value and a calculated gas pressure value, the gas usage reference information includes a gas demand and a required minimum pressure, and the bottleneck users in the pipeline network after the increased transmission are determined based on the gas usage information of the users in the pipeline network after the increased transmission and the gas usage reference information of the users, including: When the calculated gas consumption value of the first user is less than the gas demand, the first user is determined to be a bottleneck user; When the calculated gas pressure of the second user is less than the required minimum pressure, the second user is determined to be a bottleneck user; When the calculated gas consumption value and the calculated gas pressure value of the third user are respectively less than the gas demand and the required minimum pressure, the third user is determined to be a bottleneck user.

5. The method according to claim 1, wherein Determining a target facility addition plan from the plurality of first facility addition plans based on the pipeline network model after the increased transmission, wherein the target facility addition plan meets the target achievement conditions including: Based on the pipeline network model after the increase in transmission, simulating the generated multiple first facility addition plans to obtain gas usage information of bottleneck point users corresponding to the first facility addition plans; Determining a plurality of second facility addition plans based on the gas usage information and gas usage reference information of the bottleneck point users corresponding to the plurality of first facility addition plans, wherein the second facility addition plans can meet the gas usage needs of the bottleneck point users; A target facility addition plan is determined from the plurality of second facility addition plans, where the target facility addition plan meets the target achievement condition.

6. A device for determining a facility expansion plan for a natural gas pipeline network, characterized in that: include: A model building module is used to build an existing pipeline network model based on the current delivery volume of existing users, the planned delivery volume of existing users, the number of gas sources, the gas source parameters of each gas source, and the facility data of the existing pipeline network; The model building module is further used to build a pipeline network model after the increase in transmission based on the existing pipeline network model and the transmission volume of the newly added users; A gas usage determination module is used to obtain gas usage information of users in the pipeline network after the increased transmission based on the pipeline network model after the increased transmission; A user determination module is configured to determine bottleneck users in the pipeline network after the increased transmission based on the gas usage information of the users in the pipeline network after the increased transmission and the gas usage reference information of the users, wherein the bottleneck users are users whose gas demand cannot be met; A plan generating module, configured to generate a plurality of first facility addition plans based on the bottleneck point users; A scheme determination module is used to determine a target facility addition scheme from the multiple first facility addition schemes based on the pipeline network model after the increase in transmission, and the target facility addition scheme meets the target achievement conditions.

7. The device according to claim 6, characterized in that The gas usage determination module is further configured to obtain gas usage information of users in the existing pipeline network based on the existing pipeline network model; The device further includes: a transmission capacity increase judging module, configured to judge whether the existing pipeline network has transmission capacity increase based on the gas usage information of the users in the existing pipeline network and the gas usage reference information of the users; If the increased transmission capacity determination module determines that the existing pipeline network has increased transmission capacity, the model establishment module is triggered to execute the step of establishing the pipeline network model after increased transmission based on the existing pipeline network model and the newly added user transmission volume.

8. The device according to claim 6, characterized in that The gas consumption determination module is used to calculate the gas consumption and gas pressure of each user in the pipeline network model after the increase in transmission based on the natural gas pipeline network simulation software.

9. A computer device, characterized in that: The computer device includes a processor and a memory, the memory is used to store at least one section of program code, and the at least one section of program code is loaded by the processor and executes the method for determining a facility expansion plan for a natural gas pipeline network as described in any one of claims 1 to 5.

10. A storage medium, characterized in that: The storage medium is used to store at least one section of program code, and the at least one section of program code is used to execute the method for determining a facility expansion plan for a natural gas pipeline network as described in any one of claims 1 to 5.

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