Pipeline natural gas pipeline transportation cost analysis method and system for daily degree imbalance

Abstract

The invention provides a pipeline natural gas pipeline transportation cost analysis method and system for daily imbalance. The method comprises the steps that a current pipeline natural gas pipeline network system structure is determined based on the current pipeline natural gas sales business condition; introducing a virtual gas source and a virtual user into the pipe network system structure by considering the daily imbalance of the pipe network system, and obtaining the gas source proportion and the pipe transportation cost of the user and each pipe section in the balanced pipe network system structure by adopting a traceability recursive algorithm; and rejecting virtual gas sources and virtual users in the gas source proportions and the pipeline transportation fees of the users and the pipe sections to obtain real users and the gas source proportions and the pipeline transportation fees of the pipe sections. According to the invention, on the basis of the actual condition and demand of the pipeline natural gas sales service, the pipeline transportation cost analysis method is researched, the multi-dimensional pipeline transportation cost analysis method and system are formed, the pipeline transportation cost can be effectively reduced, and the efficiency and accuracy of pipeline transportation cost analysis are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of natural gas transportation, and in particular to a method and system for analyzing pipeline natural gas transportation fees for daily imbalanced pipelines. Background Art

[0002] As a clean, low-carbon and efficient fossil energy, the development of natural gas has a key impact on the process of low-carbonization in the energy field. In recent years, with the continuous expansion and improvement of the long-distance pipeline network, the long-distance transmission capacity of natural gas has gradually increased, allowing natural gas to more flexibly meet the needs of different regions and industries. Pipeline transportation fees are an important cost of the natural gas industry chain, and the company's natural gas resources mainly come from the western region, while a large part of the consumer market is distributed in the north and southeast regions. In the future process of high-quality development of natural gas sales business, pipeline transportation fees will be one of the important factors affecting benefits; at the same time, after the independent operation of the national pipeline network, the adjustment of the pipeline transportation business has changed the market operation mode of integrated natural gas production, transportation and sales dominated by the three major oil companies. Under the "X+1+X" oil and gas market pattern, with the promotion of fair and open natural gas pipeline network infrastructure, natural gas resource supply and market players are showing a diversified trend.

[0003] The existing pipeline fee analysis method still mainly analyzes the pipeline fee situation of pipeline companies in various regions from the perspective of the unseparated pipeline sales business, mainly from the single dimension of pipeline / pipeline section. However, the change of pipeline fee is closely related to resource structure, market configuration, etc. Changes in the resource market will cause changes in the company's overall pipeline fee. It is impossible to grasp the law of pipeline fee changes only from a single dimension analysis; existing research calculates pipeline fees in sections according to the download volume, but due to the mesh structure of the natural gas pipeline network and the complex flow of gas sources, it is impossible to trace the source of gas sources; in addition, due to the compressibility of natural gas, the actual gas intake and gas discharge volume of the pipeline are not equal during the settlement period, and the difference between the intake and discharge is actually the change of pipeline storage. The existing pipeline fee settlement method adopts the settlement method of settlement based on outflow and inflow, and the imbalance of inflow and outflow in different regions is aggregated to the transfer point. Previous studies can clarify the composition of pipeline fees for each resource and province, but cannot clarify the resource composition of pipeline storage and the flow of provinces, and it is difficult to aggregate pipeline transportation according to resources, markets, and pipeline groups. Summary of the invention

[0004] The purpose of the present invention is to provide a method and system for analyzing pipeline natural gas transmission fees with daily imbalance, aiming to solve the above-mentioned problems in the prior art.

[0005] The embodiment of the present invention provides a method for analyzing pipeline natural gas transmission fees for daily imbalance, comprising:

[0006] Determine the current pipeline natural gas network system structure based on the current pipeline natural gas sales business situation;

[0007] Considering the daily imbalance of the pipeline network system, virtual gas sources and virtual users are introduced into the pipeline network system structure, and a tracing recursive algorithm is used to obtain the gas source ratio and pipeline transportation fee composition of users and each pipeline section in the balanced pipeline network system structure; and

[0008] The virtual gas sources and virtual users in the gas source ratio of the users and each pipeline section and the pipeline transportation fee composition are eliminated to obtain the real users and the gas source ratio of each pipeline section and the pipeline transportation fee composition.

[0009] The embodiment of the present invention provides a pipeline natural gas transmission fee analysis system for daily imbalance, comprising:

[0010] An initial structure module is used to determine the current pipeline natural gas network system structure based on the current pipeline natural gas sales business situation;

[0011] An introduction module is used to consider the daily imbalance of the pipeline network system, introduce virtual gas sources and virtual users into the pipeline network system structure, and use a traceability recursive algorithm to obtain the gas source ratio and pipeline transportation fee composition of the users and each pipeline section in the balanced pipeline network system structure; and

[0012] The restoration module is used to remove the virtual gas sources and virtual users from the gas source ratio of the users and each pipeline section and the pipeline transportation fee composition to obtain the gas source ratio of the real users and each pipeline section and the pipeline transportation fee composition.

[0013] An embodiment of the present invention also provides an electronic device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the computer program is executed by the processor, the steps of the above-mentioned method for analyzing pipeline natural gas transmission fees for daily imbalance are implemented.

[0014] An embodiment of the present invention further provides a computer-readable storage medium, on which a program for implementing information transmission is stored. When the program is executed by a processor, the steps of the above-mentioned method for analyzing pipeline natural gas transmission fees for daily imbalance are implemented.

[0015] The use of the embodiments of the present invention can include the following beneficial effects: the embodiments of the present invention study the pipeline transmission fee analysis method based on the actual situation and needs of the pipeline natural gas sales business, and form a multi-dimensional pipeline transmission fee analysis method and system, which can effectively reduce the pipeline transmission fee cost and improve the efficiency and accuracy of pipeline transmission fee analysis. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate one or more embodiments of this specification or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 This is a flow chart of a method for analyzing pipeline natural gas transmission fees for daily imbalance according to an embodiment of the present invention;

[0018] Figure 2 It is a schematic diagram of the implementation steps of the solution of an embodiment of the present invention;

[0019] Figure 3 is a topological structure diagram of a natural gas pipeline system according to an embodiment of the present invention;

[0020] Figure 4 It is a schematic diagram of a pipeline natural gas transmission fee analysis system for daily imbalance according to an embodiment of the present invention. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the technical solutions in one or more embodiments of this specification, the technical solutions in one or more embodiments of this specification will be clearly and completely described below in conjunction with the drawings in one or more embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of them. Based on one or more embodiments of this specification, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this document.

[0022] Method Embodiment

[0023] According to an embodiment of the present invention, a method for analyzing pipeline natural gas transmission costs for daily imbalance is provided. Figure 1 is a flow chart of a method for analyzing pipeline natural gas transmission fees for daily imbalance according to an embodiment of the present invention. Figure 1 As shown, the pipeline natural gas transmission fee analysis method for daily imbalance according to an embodiment of the present invention specifically includes:

[0024] Step S101, determining the current pipeline natural gas network system structure based on the current pipeline natural gas sales business situation, specifically includes:

[0025] Determine the current business unit information and the quantity, location and connection relationship of each business unit based on the current pipeline natural gas sales business situation;

[0026] The information of each business unit includes gas source information, pipeline section information, station information, gas storage information and user information;

[0027] The business units include gas sources, pipeline sections, stations and users;

[0028] Step S102, considering the daily imbalance of the pipeline network system, introduces virtual gas sources and virtual users into the pipeline network system structure, and uses a traceability recursive algorithm to obtain the gas source ratio and pipeline transportation fee composition of the users and each pipeline section in the balanced pipeline network system structure, specifically including:

[0029] Considering the daily imbalance of the pipe network system, virtual gas sources and virtual users are introduced into the pipe network system structure according to the introduction rules;

[0030] The introduction rule is that if the air intake of a station in the pipe network system structure is less than the air discharge, a virtual air source is introduced into the station, and the expression of the air volume of the virtual air source is shown in Formula 1;

[0031] If the gas intake of a station in the pipe network system structure is greater than the gas discharge, a virtual user is introduced into the station, and the expression of the gas discharge of the virtual user is shown in Formula 2;

[0032] If the air intake of a station in the pipe network system structure is equal to the air discharge, no processing will be done;

[0033] Q i,vs =Q i,in -Q i,out Formula 1;

[0034] Q i,vc =Q i,out -Q i,in Formula 2;

[0035] Among them, Q i,vs represents the virtual gas source volume of station i, Q i,in represents the air intake of station i, Q i.out represents the gas volume of station i, Q i,vc represents the amount of gas downloaded by the virtual user at station i;

[0036] Step S103, remove the virtual gas sources and virtual users in the gas source ratio of the user and each pipeline section and the pipeline transportation fee composition, and obtain the real user and the gas source ratio of each pipeline section and the pipeline transportation fee composition, which specifically includes:

[0037] The virtual gas source is corrected according to the gas source composition ratio of the transfer point to obtain the converted real gas source, the expression is shown in formula 3;

[0038]

[0039] in, represents the corrected gas volume, I is the number of users, j∈J is the number of gas sources, K is the number of virtual gas sources, Q i,j represents the amount of gas from source j to user i, Q i,k represents the amount of gas consumed by user i from virtual gas source k, y j Indicates the proportion of gas source at the transfer point, y i,j Indicates the total proportion of the actual gas source at the transfer point.

[0040] The above technical scheme of the embodiment of the present invention is described in detail below in combination with the specific situation of the pipeline natural gas transmission fee analysis method for daily imbalance in the embodiment of the present invention.

[0041] The necessity of conducting multi-dimensional pipeline fee analysis includes: from the resource side, we can understand the proportion of pipeline fees of each resource in the resource cost and arrange the resource structure reasonably; from the market side, we can understand the pipeline fee cost and economic benefits of each market, which is helpful to optimize sales arrangements and high-end market analysis; from the pipeline group dimension, we can understand the changing rules of the pipeline volume of each pipeline, which is helpful to reduce the pipeline fee cost; from the perspective of sales business, we can comprehensively analyze the pipeline fee, understand the relationship between pipeline fee and resource market configuration, and help to deeply analyze the changing rules of pipeline fee. By analyzing the key factors affecting pipeline fee (pipeline volume, freight rate, transportation distance, pipeline route, etc.), summarizing the main reasons for the change of pipeline fee, it is helpful for natural gas sales companies to understand the cost structure and optimize cost decisions.

[0042] The embodiment of the present invention proposes a calculation process for the sales benefits of pipeline natural gas, that is, in order to make up for the problem that the existing natural gas pipeline system pipeline transportation analysis and research does not take into account the daily non-uniformity, a natural gas pipeline system pipeline transportation fee analysis method is provided, and the steps are as follows:

[0043] 1. Define the model scope according to the current status of pipeline natural gas sales business (i.e. determine the components of the pipeline network system): According to the scope of pipeline natural gas sales business, determine the number, location, connection relationship, etc. of each business unit such as gas source, pipeline section, station, customer, etc.

[0044] 2. Introduce virtual gas sources and virtual users into the pipeline system to represent the unevenness of daily scheduling and transform the unbalanced system into a balanced system.

[0045] 3. Use the source tracing recursive algorithm to obtain the gas source ratio and pipeline transportation fee composition of all users, as well as the gas source ratio and pipeline transportation fee composition of each pipeline section.

[0046] 4. Eliminate virtual gas sources and virtual users to obtain the gas source ratio and pipeline transportation fee composition of real users, as well as the gas source ratio and pipeline transportation fee composition of each pipeline section.

[0047] Specifically, the implementation steps of the embodiment of the present invention are as follows: Figure 2 As shown, including:

[0048] 1. Model implementation plan

[0049] (1) Obtain information about each business unit in pipeline natural gas sales, including gas source information, pipeline section information, station information, gas storage information, and customer information. The specific contents of each business unit information are as follows:

[0050] Gas source information: connected station (gas inlet station), resource quantity, resource price;

[0051] Pipeline section information: upstream station, downstream station, pipeline transportation volume, pipeline transportation capacity (forward and reverse transportation), pipeline section mileage, and freight rate;

[0052] Station information: connect gas source, connect pipe section, connect customers;

[0053] Customer information: connection station (distribution station), sales volume.

[0054] (2) Introduce virtual gas sources and virtual users. The principle of introduction is: traverse all stations in the pipeline network system, when the gas intake volume Q of station i i,in Less than the gas volume Q of the station i.out When a virtual gas source is added to the station, the gas volume of the virtual gas source is determined by the gas intake and gas discharge of the station:

[0055] Q i,vs =Q i,in -Q i,out (1);

[0056] Similarly, when the gas intake of a station is greater than the gas outflow of the station, a virtual user is added to the station. The gas outflow of the virtual user is:

[0057] Q i,vc =Q i,out -Q i,in (2).

[0058] (3) Pipeline network flow tracing. Based on graph theory, the natural gas pipeline network is regarded as a topological structure formed by connecting points and edges. G(V, E) is used to represent the pipeline network. V represents the node, which represents the station of the system, including compressor stations, distribution stations, valve rooms, gas storage facilities and other nodes; E represents the connecting edge, which represents the pipeline.

[0059] Total air intake volume Q of air source i i , the total amount of gas downloaded by the user is Q j , which can be expressed as follows:

[0060]

[0061] Among them, I represents the number of gas sources, J represents the number of users, and K represents the number of paths. represents the kth path from gas source i to gas source j, Q k Indicates the flow of the kth path. Calculation method:

[0062]

[0063] Among them, Q i,k represents the flow rate of the kth path from the gas source to user i, α n represents the conversion factor of the nth pipe segment, Q m,n represents the flow rate of pipe section mn, Q m represents the flow at node m.

[0064] (4) Eliminate virtual gas sources and virtual users. When converting the virtual gas supply to the real gas source, the gas supply ratio at the transfer point should be corrected:

[0065]

[0066] in, represents the corrected gas volume, I is the number of users, j∈J is the number of gas sources, K is the number of virtual gas sources, Q i,j represents the amount of gas from source j to user i, Q i,k represents the amount of gas consumed by user i from virtual gas source k, y j Indicates the proportion of gas source at the transfer point, y i,j Indicates the total proportion of the actual gas source at the transfer point.

[0067] Similarly, the pipeline transportation fee is calculated based on the changed pipeline gas volume and recalculated.

[0068] 2. Model input and output

[0069] The specific input and output contents of the embodiment of the present invention are as follows:

[0070] (1) Input:

[0071] a) Gas source: gas intake, connecting pipelines, and location;

[0072] b) Customer: gas consumption, connecting pipelines, and location;

[0073] c) Station: station ID, connecting pipeline;

[0074] d) Pipeline section: freight rate, mileage, minimum forward flow, maximum forward flow, minimum reverse flow, maximum reverse flow;

[0075] e) Gas storage: gas production volume, gas injection volume, location, and connecting pipelines.

[0076] (2) Output:

[0077] a) The amount of gas delivered to each user by each gas source;

[0078] b) Pipeline transportation fees for each gas source to each user;

[0079] c) Gas volume of each gas source in each pipe section;

[0080] d) The ratio of each gas source in each pipe section;

[0081] e) Pipeline transportation fees for each gas source in each pipeline section.

[0082] The specific examples are as follows: Basic parameters of the pipe network: Figure 3 The figure shows the topology of a virtual natural gas network. The system includes three gas sources: ZY has an intake volume of 60 million cubic meters, TLM has an intake volume of 30 million cubic meters, CQ has an intake volume of 40 million cubic meters, and the total intake volume of the system is 130 million cubic meters. The system includes six users, and the downloaded gas volume of each user is shown in Table 1.

[0083] Table 1 User download statistics

[0084] Username YJ ZZ JX FR LZ SH Volume (ten thousand cubic meters) 4600 4000 2000 1200 800 1600

[0085] The calculation results of the pipeline transportation fee of the natural gas pipeline network are shown in Tables 2 to 4. Table 2 shows the flow rate of each gas in each main pipeline section; Tables 3 and 4 show the gas volume and pipeline transportation fee from the gas source to the user respectively.

[0086] Table 2 Flow calculation results of each pipe section of the pipe network system

[0087]

[0088]

[0089] Table 3 Gas volume delivered from gas source to user (ten thousand cubic meters)

[0090] ZY TLM CQ LZ 1066.46 533.27 0.00 SH 533.23 266.64 0.00 JX 1333.44 666.56 0.00 ZZ 1934.04 967.60 1094.40 FR 799.99 400.00 0.00 YJ 1313.89 657.12 2622.00 XD(virtual) 599.55 299.99 0.00 ZZ(virtual) 483.51 241.89 273.60

[0091] Table 4 Pipeline transportation fees from each gas source to each user (ten thousand yuan)

[0092] ZY TLM CQ LZ 1235.00 669.65 0.00 SH 617.65 333.63 0.00 JX 1025.52 570.04 0.00 ZZ 2606.38 1408.44 1374.10 FR 1079.21 584.82 0.00 YJ 799.72 467.01 1123.80

[0093] System Example

[0094] According to an embodiment of the present invention, a pipeline natural gas transmission fee analysis system for daily imbalance is provided. Figure 4 Schematic diagram of a pipeline natural gas transmission fee analysis system for daily unbalanced pipelines according to an embodiment of the present invention. Figure 4 As shown, the pipeline natural gas transmission fee analysis system for daily imbalance according to an embodiment of the present invention specifically includes:

[0095] The initial structure module 40 is used to determine the current pipeline natural gas network system structure based on the current pipeline natural gas sales business situation, specifically for:

[0096] Determine the current business unit information and the quantity, location and connection relationship of each business unit based on the current pipeline natural gas sales business situation;

[0097] The information of each business unit includes gas source information, pipeline section information, station information, gas storage information and user information;

[0098] The business units include gas sources, pipeline sections, stations and users;

[0099] The introduction module 42 is used to consider the daily imbalance of the pipeline network system, introduce virtual gas sources and virtual users into the pipeline network system structure, and use a traceability recursive algorithm to obtain the gas source ratio and pipeline transportation fee composition of the users and each pipeline section in the balanced pipeline network system structure, specifically for:

[0100] Considering the daily imbalance of the pipe network system, virtual gas sources and virtual users are introduced into the pipe network system structure according to the introduction rules;

[0101] The introduction rule is that if the air intake of a station in the pipe network system structure is less than the air discharge, a virtual air source is introduced into the station, and the expression of the air volume of the virtual air source is shown in Formula 1;

[0102] If the gas intake of a station in the pipe network system structure is greater than the gas discharge, a virtual user is introduced into the station, and the expression of the gas discharge of the virtual user is shown in Formula 2;

[0103] If the air intake of a station in the pipe network system structure is equal to the air discharge, no processing will be done;

[0104] Q i,vs =Q i,in -Q i,out Formula 1;

[0105] Q i,vc =Q i,out -Q i,in Formula 2;

[0106] Among them, Q i,vs represents the virtual gas source volume of station i, Q i,in represents the air intake of station i, Q i.out represents the gas volume of station i, Q i,vc represents the amount of gas downloaded by the virtual user at station i;

[0107] The restoration module 44 is used to remove the virtual gas sources and virtual users from the gas source ratio of the user and each pipeline section and the pipeline transportation fee composition to obtain the real user and the gas source ratio of each pipeline section and the pipeline transportation fee composition, and is specifically used for:

[0108] The virtual gas source is corrected according to the gas source composition ratio of the transfer point to obtain the converted real gas source, the expression is shown in formula 3;

[0109]

[0110] in, represents the corrected gas volume, I is the number of users, j∈J is the number of gas sources, K is the number of virtual gas sources, Q i,j represents the amount of gas from source j to user i, Q i,k represents the amount of gas consumed by user i from virtual gas source k, y j Indicates the proportion of gas source at the transfer point, y i,j Indicates the total proportion of the actual gas source at the transfer point.

[0111] The embodiment of the present invention is a system embodiment corresponding to the above-mentioned method embodiment. The specific operations of each module can be understood by referring to the description of the method embodiment, which will not be repeated here.

[0112] In summary, the beneficial effects of the embodiments of the present invention are as follows:

[0113] 1. Provide rolling support for multi-dimensional pipeline fee calculation and analysis in different cycles such as annual, quarterly, and monthly, and provide application support for pipeline fee budgeting, historical pipeline fee analysis, pipeline service contract negotiation, etc.;

[0114] 2. Based on the actual situation and needs of the natural gas sales business, research the application forms of pipeline fee analysis methods, models, and data, and form multi-dimensional pipeline fee analysis models, methods, and related system functions, which can effectively reduce pipeline fee costs, improve the efficiency and accuracy of pipeline fee analysis, and have good applicability, practicality, and scalability.

[0115] Device Example 1

[0116] An embodiment of the present invention provides an electronic device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program implements the steps described in the method embodiment when executed by the processor.

[0117] Device Example 2

[0118] An embodiment of the present invention provides a computer-readable storage medium, on which a program for implementing information transmission is stored. When the program is executed by a processor, the steps described in the method embodiment are implemented.

[0119] The computer-readable storage medium in this embodiment includes, but is not limited to, ROM, RAM, magnetic disk or optical disk, etc.

[0120] 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 aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for analyzing pipeline natural gas transmission costs with daily imbalance, characterized in that include: Determine the current pipeline natural gas network system structure based on the current pipeline natural gas sales business situation; Considering the daily imbalance of the pipeline network system, virtual gas sources and virtual users are introduced into the pipeline network system structure, and a tracing recursive algorithm is used to obtain the gas source ratio and pipeline transportation fee composition of users and each pipeline section in the balanced pipeline network system structure; as well as The virtual gas sources and virtual users in the gas source ratio of the users and each pipeline section and the pipeline transportation fee composition are eliminated to obtain the real users and the gas source ratio of each pipeline section and the pipeline transportation fee composition.

2. The method according to claim 1, characterized in that Based on the current pipeline natural gas sales business situation, the current pipeline natural gas network system structure is determined to include: Determine the current business unit information and the quantity, location and connection relationship of each business unit based on the current pipeline natural gas sales business situation; The information of each business unit includes gas source information, pipeline section information, station information, gas storage information and user information; The business units include gas sources, pipeline sections, stations and users.

3. The method according to claim 1, characterized in that Considering the daily imbalance of the pipe network system, introducing virtual gas sources and virtual users into the pipe network system structure specifically includes: Considering the daily imbalance of the pipe network system, virtual gas sources and virtual users are introduced into the pipe network system structure according to the introduction rules; The introduction rule is that if the air intake of a station in the pipe network system structure is less than the air discharge, a virtual air source is introduced into the station, and the expression of the air volume of the virtual air source is shown in Formula 1; If the gas intake of a station in the pipe network system structure is greater than the gas discharge, a virtual user is introduced into the station, and the expression of the gas discharge of the virtual user is shown in Formula 2; If the air intake volume of a station in the pipe network system structure is equal to the air discharge volume, no processing will be done; Q i,vs =Q i,in -Q i,out Formula 1; Q i,vc =Q i,out -Q i,in Formula 2: Among them, Q i,vs represents the virtual gas source volume of station i, Q i,in represents the air intake of station i, Q i.out represents the gas volume of station i, Q i,vc Indicates the amount of gas downloaded by the virtual user at site i.

4. The method according to claim 1, characterized in that: Eliminating the virtual gas sources and virtual users in the gas source ratio of each pipeline section and the pipeline transportation fee structure specifically includes: The virtual gas source is corrected according to the gas source composition ratio of the transfer point to obtain the converted real gas source, and the expression is shown in Formula 3; in, represents the corrected gas volume, I is the number of users, j∈J is the number of gas sources, K is the number of virtual gas sources, Q i,j represents the amount of gas from source j to user i, Q i,k represents the amount of gas consumed by user i from virtual gas source k, y j Indicates the proportion of gas source at the transfer point, y i,j Indicates the total proportion of the actual gas source at the transfer point.

5. A pipeline natural gas transmission fee analysis system for daily unbalanced pipelines, characterized in that include: An initial structure module is used to determine the current pipeline natural gas network system structure based on the current pipeline natural gas sales business situation; An introduction module is used to consider the daily imbalance of the pipeline network system, introduce virtual gas sources and virtual users into the pipeline network system structure, and use a tracing recursive algorithm to obtain the gas source ratio and pipeline transportation fee composition of the users and each pipeline section in the balanced pipeline network system structure; as well as The restoration module is used to remove the virtual gas sources and virtual users from the gas source ratio of the users and each pipeline section and the pipeline transportation fee composition to obtain the gas source ratio of the real users and each pipeline section and the pipeline transportation fee composition.

6. The system according to claim 5, characterized in that The initial structure module is specifically used for: Determine the current business unit information and the quantity, location and connection relationship of each business unit based on the current pipeline natural gas sales business situation; The information of each business unit includes gas source information, pipeline section information, station information, gas storage information and user information; The business units include gas sources, pipeline sections, stations and users.

7. The system according to claim 5, characterized in that The introduction module is specifically used for: Considering the daily imbalance of the pipe network system, virtual gas sources and virtual users are introduced into the pipe network system structure according to the introduction rules; The introduction rule is that if the air intake of a station in the pipe network system structure is less than the air discharge, a virtual air source is introduced into the station, and the expression of the air volume of the virtual air source is shown in Formula 1; If the gas intake of a station in the pipe network system structure is greater than the gas discharge, a virtual user is introduced into the station, and the expression of the gas discharge of the virtual user is shown in Formula 2; If the air intake volume of a station in the pipe network system structure is equal to the air discharge volume, no processing will be done; Q i,vs =Q i,in -Q i,out Formula 1; Q i,vc =Q i,out -Q i,in Formula 2; Among them, Q i,vs represents the virtual gas source volume of station i, Q i,in represents the air intake of station i, Q i.out represents the gas volume of station i, Q i,vc Indicates the amount of gas downloaded by the virtual user at site i.

8. The system according to claim 5, characterized in that The restoration module is specifically used for: The virtual gas source is corrected according to the gas source composition ratio of the transfer point to obtain the converted real gas source, and the expression is shown in Formula 3; in, represents the corrected gas volume, I is the number of users, j∈J is the number of gas sources, K is the number of virtual gas sources, Q i,j represents the amount of gas from source j to user i, Q i,k represents the amount of gas consumed by user i from virtual gas source k, y j Indicates the proportion of gas source at the transfer point, y i,j Indicates the total proportion of the actual gas source at the transfer point.

9. An electronic device, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the computer program is executed by the processor, the steps of the pipeline natural gas transmission fee analysis method for daily imbalance are implemented as described in any one of claims 1 to 4.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores an implementation program for information transmission, and when the program is executed by a processor, the steps of the pipeline natural gas transmission fee analysis method for daily imbalance according to any one of claims 1 to 4 are implemented.

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