A method for calculating the turnover change of natural gas pipeline network

Abstract

The present invention provides a method for calculating the turnover change of a natural gas pipeline network, which relates to the technical field related to gas transmission pipelines. The method comprises the following steps: dividing the target area pipeline network by collecting the pipeline network topology structure and the pipeline transmission price, and obtaining several regional distributions; collecting cross-border gas transmission pipelines, gas storage reservoirs within the region, and LNG receiving stations in adjacent regions; collecting the flow direction of natural gas resources in the target area pipeline network, and marking the injection points of the gas transmission pipelines, gas storage reservoirs within the region, and LNG receiving stations by using the flow direction of natural gas resources to obtain the marked injection point distribution; counting the injection resource transportation data of each injection point within a preset time, and calculating the average transportation distance of each injection point; and calculating the turnover change of the target area pipeline network based on the average transportation distance and the change in the transmission volume; and solving the technical problem that it is difficult to objectively and reasonably calculate the impact of a new pipeline project on the turnover of a regional pipeline network or a national pipeline network in the economic evaluation of a new natural gas pipeline project.

Description

Technical Field

[0001] The present invention relates to the technical field related to gas transmission pipelines, and in particular to a method for calculating changes in the turnover volume of a natural gas pipeline network. Background Art

[0002] With the integration of gas transmission, storage and transportation facilities of the three major oil companies, China National Petroleum Corporation, China Petrochemical Corporation and China National Offshore Oil Corporation, the "one network across the country" pattern has basically taken shape. At present, the economic evaluation of new pipeline engineering projects usually adopts the "with or without comparison method" for evaluation, and generally regards the output of economic benefits in the "without project" scenario as zero. The output of economic benefits in the "with project" scenario only considers the economic benefits of the new pipeline itself, and does not consider the impact of the presence or absence of a single pipeline on the regional pipeline network or the overall benefits of the pipeline network under the background of a national network.

[0003] The economic benefits of the new pipeline project itself are calculated based on the pipeline turnover volume determined by the feasibility study and the pipeline transportation rate promulgated by the state. The impact of the new pipeline project on the economic benefits of the pipeline network needs to be calculated based on the pipeline transportation rate promulgated by the state and the change in the pipeline network turnover volume. The pipeline transportation rate is promulgated by the state and is known information. The inability to reasonably calculate the change data of the pipeline network turnover volume is the biggest problem facing the economic evaluation of new pipeline projects.

[0004] Traditional economic evaluation methods only consider the increase in turnover of new pipeline projects themselves, without considering the impact of new projects on regional or national pipeline networks. The results of economic benefit evaluation are not objective and reasonable, which seriously affects project decisions. Summary of the invention

[0005] The present application provides a method for calculating the change in turnover of a natural gas pipeline network, which is used to solve the technical problem that it is difficult to objectively and reasonably calculate the impact of a new pipeline project on the turnover of a regional pipeline network or a national pipeline network in the economic evaluation of a new natural gas pipeline project, so as to effectively estimate and quantify the impact of a new pipeline project on the overall turnover of a regional pipeline network or even a national pipeline network, fill the gap in the quantitative evaluation method for the change in pipeline network turnover, provide a supporting tool for the economic benefit evaluation of a new pipeline project and the evaluation of the impact of changes in local pipeline volume on the overall turnover, fundamentally change the method model of the "with and without comparison method" for evaluating gas transmission pipeline projects, significantly improve the objectivity and rationality of the evaluation conclusion, and thus provide a more scientific basis for decision-making.

[0006] In view of the above problems, the present application provides a method for calculating the changes in the turnover volume of a natural gas pipeline network.

[0007] In a first aspect, an embodiment of the present application provides a method for calculating the turnover volume change of a natural gas pipeline network, the method comprising: collecting a pipeline network topology structure and a pipeline transportation price of a target area pipeline network; dividing the target area pipeline network by using the pipeline network topology structure and the pipeline transportation price to obtain a plurality of regional distributions; obtaining a pipeline network site set by collecting cross-border pipeline network sites of two adjacent areas in the plurality of regional distributions, wherein the pipeline network site set includes a gas transmission pipeline, a gas storage reservoir within a domain, and an LNG receiving station; collecting the flow direction of natural gas resources of the target area pipeline network, and using the flow direction of natural gas resources to mark the injection points of the gas transmission pipeline, the gas storage reservoir within the domain, and the LNG receiving station to obtain a marked injection point distribution; counting the injection resource transportation data of each injection point in the marked injection point distribution within a preset time, wherein the injection resource transportation data includes transportation volume, path, and transportation distance; calculating the average transportation distance of each injection point based on the transportation volume, the path, and the transportation distance; and calculating the turnover volume change of the target area pipeline network based on the average transportation distance and the change in the transportation volume.

[0008] In a second aspect, an embodiment of the present application provides a system for calculating the turnover change of a natural gas pipeline network, the system comprising: an information collection module, the information collection module being used to collect the pipeline network topology structure and pipeline transportation price of the target area pipeline network; a region division module, the region division module being used to divide the target area pipeline network by using the pipeline network topology structure and the pipeline transportation price to obtain a plurality of regional distributions; a pipeline site collection module, the pipeline site collection module being used to obtain a pipeline site set by collecting pipeline sites across boundaries of two adjacent areas in the plurality of regional distributions, wherein the pipeline site set includes gas transmission pipelines, gas storage depots within the domain and LNG receiving stations; an injection point distribution marking module, the injection point distribution marking module being used to collect the target area pipeline network; The natural gas resource flow direction of the regional pipeline network, and using the natural gas resource flow direction, the injection points of the gas transmission pipeline, the gas storage reservoir within the domain and the LNG receiving station are marked to obtain the marked injection point distribution; a resource transportation data statistics module, the resource transportation data statistics module is used to count the injection resource transportation data of each injection point in the marked injection point distribution within a preset time, wherein the injection resource transportation data includes transportation volume, path, and transportation distance; an average transportation distance calculation module, the average transportation distance calculation module calculates the average transportation distance of each injection point based on the transportation volume, the path and the transportation distance; a turnover volume change calculation module, the turnover volume change calculation module is used to calculate the turnover volume change of the target regional pipeline network based on the average transportation distance and the volume change.

[0009] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0010] The present application provides a method and system for building a modular simulation model of a typical control method, which collects the pipeline network topology and pipeline transportation price of the target area pipeline network; divides the target area pipeline network by using the pipeline network topology and the pipeline transportation price to obtain several regional distributions; obtains a pipeline network site set by collecting cross-border pipeline network sites in two adjacent areas in the several regional distributions, wherein the pipeline network site set includes gas pipelines, gas storage reservoirs within the domain and LNG receiving stations; collects the natural gas resource flow direction of the target area pipeline network, and uses the natural gas resource flow direction to mark the injection points of the gas pipelines, the gas storage reservoirs within the domain and the LNG receiving stations to obtain a marked injection point distribution; counts the injection resource transportation data of each injection point in the marked injection point distribution within a preset time, wherein the injection resource transportation data includes transportation volume, path and transportation distance; calculates the average transportation distance of each injection point based on the transportation volume, the path and the transportation distance; and calculates the turnover volume change of the target area pipeline network based on the average transportation distance and the transportation volume change. It solves the technical problem of difficulty in objectively and reasonably calculating the impact of new pipeline projects on the turnover of regional or national pipeline networks in the economic evaluation of new natural gas pipeline projects, and achieves effective estimation and quantification of the impact of new pipeline engineering projects on the overall turnover of regional pipeline networks and even national pipeline networks, filling the gap in the quantitative evaluation method of pipeline network turnover changes, and providing a supporting tool for the economic benefit evaluation of new pipeline engineering projects and the impact of local pipeline network transmission changes on the overall turnover. It fundamentally changes the method model of "with and without comparison method" for evaluating gas pipeline projects, significantly improves the objectivity and rationality of the evaluation conclusions, and thus provides a more scientific basis for decision-making. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A flow chart of a method for calculating the change in turnover of a natural gas pipeline network provided for this application;

[0012] Figure 2 A schematic diagram of a flow chart of dividing the target area pipeline network in a method for calculating the turnover change of a natural gas pipeline network provided in this application;

[0013] Figure 3 A structural schematic diagram of a natural gas network turnover volume change accounting system is provided for this application;

[0014] Explanation of the reference numerals: information collection module 100, area division module 200, network site collection module 300, injection point distribution marking module 400, resource transportation data statistics module 500, average transportation distance calculation module 600, turnover volume change calculation module 700. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] The present application provides a method for calculating the change in turnover of a natural gas pipeline network, which is used to solve the technical problem that it is difficult to objectively and reasonably calculate the impact of a new pipeline project on the turnover of a regional pipeline network or a national pipeline network in the economic evaluation of a new natural gas pipeline project, so as to effectively estimate and quantify the impact of a new pipeline project on the overall turnover of a regional pipeline network or even a national pipeline network, fill the gap in the quantitative evaluation method for the change in pipeline network turnover, provide a supporting tool for the economic benefit evaluation of a new pipeline project and the evaluation of the impact of changes in local pipeline volume on the overall turnover, fundamentally change the method model of the "with and without comparison method" for evaluating gas pipeline projects, significantly improve the objectivity and rationality of the evaluation conclusion, and thus provide a more scientific basis for decision-making.

[0017] Embodiment 1

[0018] like Figure 1 As shown, the present application provides a method for calculating the change in turnover of a natural gas pipeline network, the method comprising:

[0019] S100: Collect the pipeline network topology and pipeline transportation price of the target area pipeline network;

[0020] S200: dividing the target area pipeline network by using the pipeline network topology and the pipeline transportation price to obtain several regional distributions;

[0021] Specifically, with the increasing attention paid to the overall impact of the pipeline network, construction decision-makers have realized that the traditional comparative evaluation of presence and absence, which only considers the economic benefits of the newly built pipeline itself, cannot objectively and truly represent the economic benefits of the newly built pipeline project. It is necessary to combine the economic benefits of the new project itself and its impact on the economic benefits of the regional pipeline network or the overall economic benefits of the pipeline network for evaluation.

[0022] With the integration of gas transmission, storage and transportation facilities of the three major oil companies, China National Petroleum Corporation, China Petrochemical Corporation and China National Offshore Oil Corporation, the "One Network for the Whole Country" pattern has basically taken shape. The pipeline network topology structure and pipeline transportation price information of the target area pipeline network are collected, and the target area pipeline network is divided into several areas using the collected pipeline network topology structure and the pipeline transportation price. By analyzing each area, the calculation process of the impact of new projects on pipeline network turnover is simplified, thereby achieving the purpose of accurately evaluating the economic benefits of new natural gas pipeline projects.

[0023] Alternatively, if Figure 2 As shown, an implementation of step S200 in the method provided in the embodiment of the present application includes:

[0024] S210: collecting the location of the newly built pipeline in the area where it is located, and determining the location area of ​​the newly built pipeline;

[0025] S220: Determine a preset transmission volume influence range based on the newly built pipeline location area and the pipeline network topology structure;

[0026] S230: Dividing the target area pipeline network based on the preset transmission volume impact range and the pipeline transportation price.

[0027] Specifically, dividing the target area pipeline network specifically includes collecting the location of the newly built pipeline according to the geographical location of the newly built pipeline, determining the location area to which the newly built pipeline belongs, and then determining the preset transmission volume influence range according to the location area of ​​the newly built pipeline and the pipeline network topology structure because the regional pipeline networks or national pipeline networks influence each other. Finally, combining the preset transmission volume influence range and the pipeline transportation price, the target area pipeline network is divided to simplify the calculation process of the impact of new projects on the pipeline network turnover.

[0028] S300: acquiring a pipeline site set by collecting cross-border pipeline sites in two adjacent regions in the plurality of regional distributions, wherein the pipeline site set includes a gas transmission pipeline, a gas storage depot within the region, and an LNG receiving station;

[0029] S400: collecting the natural gas resource flow direction of the target area pipeline network, and using the natural gas resource flow direction to mark the injection points of the gas transmission pipeline, the gas storage reservoir within the region, and the LNG receiving station, to obtain the marked injection point distribution;

[0030] Specifically, after dividing the pipeline network into several areas, the cross-border gas pipelines, in-domain gas storages and LNG receiving stations in each area are sorted out, especially the cross-border gas pipelines, in-domain gas storages and LNG receiving stations in adjacent areas, wherein the gas pipelines, in-domain gas storages and LNG receiving stations together constitute a pipeline network site set, and the natural gas resource flow direction of the pipeline network in the target area is collected. According to the natural gas resource flow direction collection results, the injection points of the gas pipelines, the in-domain gas storages and the LNG receiving stations are marked to obtain the marked injection point distribution, and each area contains several injection points.

[0031] Furthermore, an implementation of step S400 in the method provided in the embodiment of the present application includes:

[0032] S410: Determine a target area A and a target area B based on the distribution of the plurality of areas, wherein the target area A and the target area B are adjacent areas;

[0033] S420: Determine, according to the flow direction of the natural gas resources, the gas pipeline injection point a1, the gas storage injection point a2 within the region, and the LNG receiving station injection point a3 to be transported to the target area A;

[0034] S430: According to the flow direction of the natural gas resources, determine the gas pipeline injection point b1, the gas storage injection point b2 within the region, and the LNG receiving station injection point b3 to be transported to the target area B.

[0035] Specifically, based on the distribution of the several regions, target region A and target region B in adjacent regions are determined, and the cross-border natural gas pipelines, gas storages and LNG receiving stations in the region are sorted out; according to the flow direction of the natural gas resources, the injection point a1 of the gas pipeline transported to the target region A, the injection point a2 of the gas storage in the region and the injection point a3 of the LNG receiving station are determined; according to the flow direction of the natural gas resources, the injection point b1 of the gas pipeline transported to the target region B, the injection point b2 of the gas storage in the region and the injection point b3 of the LNG receiving station are determined.

[0036] Furthermore, the method further comprises:

[0037] S440: Analyze the change of pipeline volume of injection points by analyzing the injection point a1 of the gas pipeline, the injection point a2 of the gas storage in the region, the injection point a3 of the LNG receiving station, the injection point b1 of the gas pipeline, the injection point b2 of the gas storage in the region, and the injection point b3 of the LNG receiving station;

[0038] S450: Analyze and obtain a target injection point set, wherein the target injection point set has an input change, and the target injection point set is included in the marked injection point distribution.

[0039] Specifically, a newly built natural gas pipeline may cause changes in the output at each injection point in the associated area. In the embodiment of the present application, the pipeline output changes of the injection points are analyzed by analyzing the injection point a1 of the gas pipeline, the injection point a2 of the gas storage in the domain, the injection point a3 of the LNG receiving station, the injection point b1 of the gas transmission pipeline, the injection point b2 of the gas storage in the domain, and the injection point b3 of the LNG receiving station to obtain the injection points where the pipeline output changes.

[0040] Furthermore, an implementation of step S440 in the method provided in the embodiment of the present application includes:

[0041] S441: using the formula: output change value = pipeline output after the new project is built - pipeline output of the unbuilt project, respectively calculate the output change value of each injection point among the gas pipeline injection point a1, the in-region gas storage injection point a2, the LNG receiving station injection point a3, the gas pipeline injection point b1, the in-region gas storage injection point b2, and the LNG receiving station injection point b3, and obtain the output change value of each injection point;

[0042] S442: Filtering the input change value of each injection point by a preset change value to obtain the corresponding target injection point set.

[0043] Specifically, in order to determine the change in the output of each injection point in the associated area caused by the new natural gas pipeline, preferably, the output change value is in units of years, and the output change value calculation formula is used as follows:

[0044] Transmission volume change value = pipeline transmission volume after the new project is built - pipeline transmission volume of the unbuilt project

[0045] The output change value of each injection point among the gas pipeline injection point a1, the in-domain gas storage injection point a2, the LNG receiving station injection point a3, the gas transmission pipeline injection point b1, the in-domain gas storage injection point b2, and the LNG receiving station injection point b3 is calculated respectively to obtain the output change value of each injection point.

[0046] In order to improve accuracy while reducing unnecessary calculations and increasing computing speed, injection points with low input change values ​​and small average transport distances are ignored. In the embodiment of the present application, the input change values ​​of each injection point are screened by preset change values. The preset change values ​​can be determined according to needs to obtain the corresponding target injection point set.

[0047] S500: Counting the injection resource transportation data of each injection point in the marked injection point distribution within a preset time, wherein the injection resource transportation data includes transportation volume, path, and transportation distance;

[0048] Specifically, after obtaining the distribution of the marked injection points, statistics are collected on the actual natural gas transportation volume, path and transportation distance of each injection point in the corresponding area within a preset time, preferably, the preset time is one year, in preparation for the subsequent calculation of the average transportation distance of each injection point.

[0049] S600: Calculating an average transportation distance of each injection point based on the transportation volume, the route and the transportation distance;

[0050] Further, the average transport distance of each injection point is calculated, including:

[0051] Using the formula: The average transport distance of each injection point is calculated, wherein the transport volume i represents the transport volume of a certain injection point on a certain path, the transport distance i represents the transport distance of a certain injection point on a certain path, and n represents the number of transport paths corresponding to a certain marked injection point.

[0052] Specifically, after obtaining the actual natural gas transportation volume, route and transportation distance of each injection point in the corresponding area, the average transportation distance of each injection point is calculated based on the transportation volume, transportation distance and the number of transportation routes, using the following average transportation distance calculation formula:

[0053]

[0054] Among them, the input i Indicates the transport volume and distance of a certain injection point and a certain path i It represents the transportation distance of a certain path of a certain injection point, n represents the number of transportation paths corresponding to a certain marked injection point, and the average transportation distance of each injection point is calculated.

[0055] S700: Based on the average transport distance and the transport volume change, the turnover volume change of the pipeline network in the target area is calculated.

[0056] Furthermore, the turnover change of the target area pipeline network is calculated, including:

[0057] Using the formula: Natural gas pipeline network turnover change = ∑ i＝目标注入点集合 (Input Change i ×Average transport distance i ), calculate the turnover change, where the output change i Indicates the number change value of each injection point in the target injection point set, the average transport distance i It represents the average transport distance of each injection point in the target injection point set.

[0058] Specifically, after the change in the volume and the average transportation distance of each injection point are calculated using the change in the volume and the average transportation distance calculation formula, the calculation formula for the change in the turnover volume of the natural gas pipeline network is used based on the average transportation distance and the change in the volume. The calculation formula for the change in the turnover volume of the natural gas pipeline network is as follows:

[0059]

[0060] Among them, the change in volume i represents the change in the number of injection points in the target injection point set, and the average transportation distance i represents the average transportation distance of each injection point in the target injection point set; the turnover change of the target regional pipeline network is calculated. This solves the technical problem of the difficulty in objectively and reasonably calculating the impact of the new pipeline project on the turnover of the regional pipeline network or the national pipeline network in the economic evaluation of the new natural gas pipeline project, and achieves the technical effect of objectively, truly and accurately evaluating the economic benefits of the new natural gas pipeline project.

[0061] In summary, the method for calculating the change in turnover of a natural gas pipeline network provided in the embodiment of the present application has the following technical effects:

[0062] The embodiment of the present application provides a method for calculating the turnover change of a natural gas pipeline network, which includes collecting the pipeline network topology structure and pipeline transportation price of the pipeline network in a target area; dividing the pipeline network in the target area by using the pipeline network topology structure and the pipeline transportation price to obtain several regional distributions; collecting pipeline network sites across boundaries of two adjacent areas in the several regional distributions to obtain a pipeline network site set, wherein the pipeline network site set includes a gas pipeline, a gas storage reservoir within the domain and an LNG receiving station; collecting the flow direction of natural gas resources in the pipeline network in the target area, and using the flow direction of natural gas resources to mark the injection points of the gas pipeline, the gas storage reservoir within the domain and the LNG receiving station to obtain a marked injection point distribution; counting the injection resource transportation data of each injection point in the marked injection point distribution within a preset time, wherein the injection resource transportation data includes transportation volume, path and transportation distance; calculating the average transportation distance of each injection point based on the transportation volume, the path and the transportation distance; and calculating the turnover change of the pipeline network in the target area based on the average transportation distance and the change in the flow volume. It solves the technical problem of difficulty in objectively and reasonably calculating the impact of new pipeline projects on the turnover of regional or national pipeline networks in the economic evaluation of new natural gas pipeline projects, and achieves effective estimation and quantification of the impact of new pipeline engineering projects on the overall turnover of regional pipeline networks and even national pipeline networks, filling the gap in the quantitative evaluation method of pipeline network turnover changes, and providing a supporting tool for the economic benefit evaluation of new pipeline engineering projects and the impact of local pipeline network transmission changes on the overall turnover. It fundamentally changes the method model of "with and without comparison method" for evaluating gas pipeline projects, significantly improves the objectivity and rationality of the evaluation conclusions, and thus provides a more scientific basis for decision-making.

[0063] Embodiment 2

[0064] Based on the same inventive concept as the method for calculating the change in the turnover of a natural gas pipeline network in the aforementioned embodiment, Figure 3 As shown, the present application provides a system for calculating the turnover change of a natural gas pipeline network, wherein the system comprises:

[0065] An information collection module 100, which is used to collect the pipeline network topology and pipeline transportation price of the target area pipeline network;

[0066] A region division module 200, the region division module 200 is used to divide the target region pipeline network by using the pipeline network topology structure and the pipeline transportation price, and obtain a plurality of regional distributions;

[0067] A pipeline site collection module 300, wherein the pipeline site collection module 300 is used to collect pipeline sites across boundaries of two adjacent areas in the distribution of the plurality of areas, so as to obtain a pipeline site set, wherein the pipeline site set includes a gas transmission pipeline, a gas storage depot within the area, and an LNG receiving station;

[0068] An injection point distribution marking module 400, which is used to collect the natural gas resource flow direction of the target area pipeline network, and use the natural gas resource flow direction to mark the injection points of the gas transmission pipeline, the gas storage reservoir within the region and the LNG receiving station to obtain a marked injection point distribution;

[0069] A resource transportation data statistics module 500, the resource transportation data statistics module 500 is used to count the injection resource transportation data of each injection point in the marked injection point distribution within a preset time, wherein the injection resource transportation data includes transportation volume, path, and transportation distance;

[0070] An average transport distance calculation module 600, wherein the average transport distance calculation module 600 calculates the average transport distance of each injection point based on the transport volume, the path and the transport distance;

[0071] The turnover volume change calculation module 700 is used to calculate the turnover volume change of the target area pipeline network based on the average transportation distance and the transportation volume change.

[0072] Furthermore, the area division module 200 in the system is also used for:

[0073] Collect the location of the new pipeline and determine the location of the new pipeline;

[0074] Determine a preset flow rate impact range based on the newly built pipeline location area and the pipeline network topology;

[0075] The target area pipeline network is divided based on the preset transmission volume impact range and the pipeline transportation price.

[0076] Furthermore, the injection point distribution marking module 400 in the system is also used for:

[0077] Based on the distribution of the several regions, determining a target region A and a target region B, wherein the target region A and the target region B are adjacent regions;

[0078] According to the flow direction of the natural gas resources, determine the gas pipeline injection point a1, the gas storage injection point a2 within the region, and the LNG receiving station injection point a3 to the target area A;

[0079] According to the flow direction of the natural gas resources, the gas pipeline injection point b1, the gas storage injection point b2 within the region and the LNG receiving station injection point b3 for transporting gas to the target area B are determined.

[0080] Furthermore, the injection point distribution marking module 400 in the system is also used for:

[0081] By analyzing the changes in the pipeline volume of the injection points a1, a2, a3, a1 and a2 of the gas storage in the region, a1 and a3 of the LNG receiving station, a1 and a1 of the gas pipeline injection point, a2 and a2 of the gas storage in the region, a1 and a3 of the LNG receiving station injection point ...2 of the gas pipeline injection point, a1 and a2 of the gas storage in the region, a1 and a3 of the LNG receiving station injection point;

[0082] A target injection point set is obtained by analysis, wherein the target injection point set has an input change, and the target injection point set is included in the marked injection point distribution.

[0083] Furthermore, the injection point distribution marking module 400 in the system is also used for:

[0084] Using the formula: volume change value = pipeline volume after the new project is built - pipeline volume of the unbuilt project, calculate the volume change value of each injection point among the gas pipeline injection point a1, the in-domain gas storage injection point a2, the LNG receiving station injection point a3, the gas pipeline injection point b1, the in-domain gas storage injection point b2, and the LNG receiving station injection point b3, and obtain the volume change value of each injection point;

[0085] The corresponding target injection point set is obtained by screening the input volume change values ​​of each injection point by a preset change value.

[0086] Furthermore, the average transport distance calculation module 600 in the system is also used for:

[0087] Using the formula: Calculate the average transport distance of each injection point, where the transport volume i Indicates the transport volume and distance of a certain injection point and a certain path i It represents the transportation distance of a certain injection point and a certain path, and n represents the number of transportation paths corresponding to a certain marked injection point.

[0088] Furthermore, the turnover change calculation module 700 in the system is also used for:

[0089] Using the formula: Natural gas pipeline network turnover change = ∑ i＝目标注入点集合 (Input Change i ×Average transport distance i ), calculate the turnover change, where the output change i Indicates the number change value of each injection point in the target injection point set, the average transport distance i It represents the average transport distance of each injection point in the target injection point set.

[0090] The specific working process of the modules disclosed in the above embodiments of the present application can be found in the corresponding method embodiments, which will not be repeated here.

[0091] The present application can be implemented or used by professionals and technicians. Various modifications to these embodiments will be apparent to professionals and technicians in the field, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for calculating the change in turnover of a natural gas pipeline network, characterized in that: The method comprises: Collect the pipeline network topology and pipeline transportation prices of the target area; By using the pipeline network topology and the pipeline transportation price, the target area pipeline network is divided to obtain several regional distributions; By collecting cross-border pipeline sites in two adjacent areas in the distribution of the several areas, a pipeline site set is obtained, wherein the pipeline site set includes gas pipelines, gas storage depots within the area, and LNG receiving stations; The natural gas resource flow direction of the target area pipeline network is collected, and the injection points of the gas transmission pipeline, the gas storage reservoir within the area, and the LNG receiving station are marked by using the natural gas resource flow direction to obtain the marked injection point distribution; Counting the injection resource transportation data of each injection point in the marked injection point distribution within a preset time, wherein the injection resource transportation data includes transportation volume, path, and transportation distance; Based on the transport volume, the route and the transport distance, calculating the average transport distance of each injection point; Based on the average transport distance and the change in transport volume, the turnover volume change of the pipeline network in the target area is calculated; The calculation of the average transport distance of each injection point includes: Using the formula: , calculate the average transport distance of each injection point, where Indicates the transport volume of a certain injection point and a certain path, It indicates the transportation distance of a certain path of a certain injection point, and n indicates the number of transportation paths corresponding to a certain marked injection point; The calculation of the turnover change of the target area pipeline network includes: Using the formula: , calculate and obtain the turnover change, where, Indicates the change in the number of injection points in the target injection point set. It represents the average transport distance of each injection point in the target injection point set.

2. The method according to claim 1, characterized in that The target area pipeline network is divided into: Collect the location of the new pipeline and determine the location of the new pipeline; Determine a preset flow rate impact range based on the newly built pipeline location area and the pipeline network topology; The target area pipeline network is divided based on the preset transmission volume impact range and the pipeline transportation price.

3. The method according to claim 2, characterized in that The injection points of the gas pipeline, the gas storage in the region and the LNG receiving station are marked, including: Based on the distribution of the several regions, determining a target region A and a target region B, wherein the target region A and the target region B are adjacent regions; According to the flow direction of the natural gas resources, determine the gas pipeline injection point a1, the gas storage injection point a2 within the region, and the LNG receiving station injection point a3 to the target area A; According to the flow direction of the natural gas resources, the gas pipeline injection point b1, the gas storage injection point b2 within the region and the LNG receiving station injection point b3 for transporting gas to the target area B are determined.

4. The method according to claim 3, characterized in that The method comprises: By analyzing the changes in the pipeline volume of the injection points a1, the injection point a2 of the gas storage in the region, the injection point a3 of the LNG receiving station, the injection point b1 of the gas pipeline, the injection point b2 of the gas storage in the region, and the injection point b3 of the LNG receiving station; A target injection point set is obtained by analysis, wherein the target injection point set has an input change, and the target injection point set is included in the marked injection point distribution.

5. The method according to claim 4, characterized in that The analysis of the change of the pipe flow rate at the injection point includes: Using the formula: , respectively calculate the output change value of each injection point among the gas pipeline injection point a1, the in-domain gas storage injection point a2, the LNG receiving station injection point a3, the gas pipeline injection point b1, the in-domain gas storage injection point b2, and the LNG receiving station injection point b3, and obtain the output change value of each injection point; The corresponding target injection point set is obtained by screening the input volume change values ​​of each injection point by a preset change value.

6. A system for calculating the turnover change of a natural gas pipeline network, characterized in that: The system comprises: An information collection module, which is used to collect the pipeline network topology and pipeline transportation price of the target area pipeline network; A regional division module, wherein the regional division module is used to divide the target regional pipeline network by using the pipeline network topology and the pipeline transportation price, and obtain a plurality of regional distributions; A pipeline site collection module, wherein the pipeline site collection module is used to collect pipeline sites across boundaries of two adjacent areas in the distribution of the plurality of areas to obtain a pipeline site set, wherein the pipeline site set includes gas pipelines, gas storage depots within the area, and LNG receiving stations; An injection point distribution marking module, which is used to collect the natural gas resource flow direction of the target area pipeline network, and use the natural gas resource flow direction to mark the injection points of the gas transmission pipeline, the gas storage in the region and the LNG receiving station to obtain the marked injection point distribution; A resource transportation data statistics module, the resource transportation data statistics module is used to count the injection resource transportation data of each injection point in the marked injection point distribution within a preset time, wherein the injection resource transportation data includes transportation volume, path, and transportation distance; An average transport distance calculation module, which calculates the average transport distance of each injection point based on the transport volume, the path and the transport distance; A turnover volume change calculation module, the turnover volume change calculation module is used to calculate the turnover volume change of the target area pipeline network based on the average transportation distance and the transportation volume change; Furthermore, the average transport distance calculation module is also used for: Using the formula: , calculate the average transport distance of each injection point, where Indicates the transport volume of a certain injection point and a certain path, It indicates the transportation distance of a certain path of a certain injection point, and n indicates the number of transportation paths corresponding to a certain marked injection point; Furthermore, the turnover change calculation module is also used for: Using the formula: , calculate and obtain the turnover change, where, Indicates the change in the number of injection points in the target injection point set. It represents the average transport distance of each injection point in the target injection point set.

Images