Method and device for determining energy of nodes of gas pipe network

Abstract

The application provides a gas pipe network node energy determination method and device, the method comprises the following steps: determining the gas flow direction of adjacent nodes based on the gas flow direction of a flow-through node in the gas pipe network, wherein the adjacent nodes refer to the nodes connected with the flow-through node; determining the energy conservation equation of the flow-through node based on the gas flow direction of the flow-through node and the gas flow direction of the adjacent nodes; and determining the energy of the flow-through node and the adjacent nodes based on the energy conservation equation. The application determines the energy conservation equation of the flow-through node based on the gas flow direction of the flow-through node and the gas flow direction of the adjacent nodes, so that the energy of the flow-through node and the adjacent nodes can be determined based on the energy conservation equation, and the energy of each node in the gas pipe network can be monitored.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas pipe network, and particularly relates to a gas pipe network node energy determination method and device. BACKGROUND

[0002] Most of the fuel required in the production process of a refinery comes from a gas system, and therefore, optimized operation of the gas system is of great significance to smooth production and benefits of the refinery. Refinery gas mainly includes four components: a gas production unit, a gas conveying unit, a gas recovery unit and a gas consumption unit. The gas produced by the gas production unit is sent to the gas consumption unit through the gas conveying unit; low-pressure gas cannot be directly utilized and is sent to the gas pipe network after being recovered by the gas recovery unit and then enters the gas consumption unit.

[0003] The gas pipe network of a refinery is very complex, and upstream and downstream devices are connected through multiple nodes and pipe sections. Due to weather factors, gas production and consumption devices and gas supplementing amounts, changes occur at all times, resulting in fluctuations in pipe network pressure and gas unit volume heat value, affecting the operation stability of the gas consumption device and causing safety hazards.

[0004] The flow and unit heat value of gas are decisive parameters for determining the operation stability of the gas consumption device, but there is currently a lack of effective methods for obtaining the same, and monitoring and prompting cannot be achieved. SUMMARY

[0005] The present application provides a gas pipe network node energy determination method and device to solve the defect that the energy of each node of the gas pipe network cannot be obtained in the prior art.

[0006] The present application provides a gas pipe network node energy determination method, comprising:

[0007] Based on the gas flow direction of a flow-through node in the gas pipe network, the gas flow direction of an adjacent node is determined, wherein the adjacent node refers to a node connected to the flow-through node;

[0008] Based on the gas flow direction of the flow-through node and the gas flow direction of the adjacent node, an energy conservation equation of the flow-through node is determined;

[0009] Based on the energy conservation equation, the energy of the flow-through node and the adjacent node is determined.

[0010] According to the gas pipe network node energy determination method provided by the present application, the energy conservation equation of the flow-through node is determined based on the gas flow direction of the flow-through node and the gas flow direction of the adjacent node, comprising:

[0011] Based on the gas flow direction of the flow-through node and the gas flow direction of the adjacent node, the gas composition of the flow-through node and the gas composition of the adjacent node are determined.

[0012] determining an energy conservation equation of the flow node based on the gas composition of the flow node, the gas composition of the adjacent node, and the gas heat value.

[0013] According to the gas pipe network node energy determination method provided by the present application, the energy conservation equation of the flow node is determined based on the gas composition of the flow node, the gas composition of the adjacent node, and the gas heat value, which comprises the following steps:

[0014] determining the energy of the flow node and the energy of the adjacent node based on the gas composition of the flow node, the gas composition of the adjacent node, and the gas heat value.

[0015] constructing the energy conservation equation of the flow node based on the energy of the flow node and the energy of the adjacent node.

[0016] According to the gas pipe network node energy determination method provided by the present application, the energy of the flow node and the energy of the adjacent node are determined based on the gas composition of the flow node, the gas composition of the adjacent node, and the gas heat value, which comprises the following steps:

[0017] determining the gas material content of the flow node and the gas material content of the adjacent node by material conservation based on the gas composition of the flow node and the gas composition of the adjacent node.

[0018] determining the energy of the flow node and the energy of the adjacent node based on the gas material content of the flow node, the gas material content of the adjacent node, and the gas heat value.

[0019] According to the gas pipe network node energy determination method provided by the present application, the gas flow direction of the adjacent node is determined based on the gas flow direction of the flow node in the gas pipe network, which comprises the following steps:

[0020] in the case that the gas flow direction of the flow node is gas outflow, the gas flow direction of the adjacent node is gas inflow.

[0021] According to the gas pipe network node energy determination method provided by the present application, the determination of the gas flow direction of the adjacent node further comprises the following steps:

[0022] determining the gas flow direction of the flow node based on the gas flow direction of the gas production node or the gas consumption node in the gas pipe network.

[0023] The present application further provides a gas pipe network node energy determination device, which comprises:

[0024] A flow direction determining unit is configured to determine the gas flow direction of a neighboring node based on the gas flow direction of a flow-through node in the gas pipe network, wherein the neighboring node refers to a node connected to the flow-through node.

[0025] An equation determining unit is configured to determine an energy conservation equation of the flow-through node based on the gas flow direction of the flow-through node and the gas flow direction of the neighboring node.

[0026] An energy determining unit is configured to determine the energy of the flow-through node and the neighboring node based on the energy conservation equation.

[0027] The present application further provides an electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the gas pipe network node energy determination method according to any one of the above when executing the program.

[0028] The present application further provides a non-transitory computer readable storage medium having a computer program stored thereon, wherein the computer program is executable on a processor to implement the gas pipe network node energy determination method according to any one of the above.

[0029] The present application further provides a computer program product comprising a computer program, wherein the computer program is executable on a processor to implement the gas pipe network node energy determination method according to any one of the above.

[0030] The present application provides a gas pipe network node energy determination method and device, which determines an energy conservation equation of a flow-through node based on the gas flow direction of the flow-through node and the gas flow direction of a neighboring node, thereby determining the energy of the flow-through node and the neighboring node based on the energy conservation equation, and monitoring the energy of each node in the gas pipe network. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort.

[0032] Figure 1 is a flowchart of the gas pipe network node energy determination method provided by the present application;

[0033] Figure 2 is a structural schematic diagram of the gas pipe network provided by the present application;

[0034] Figure 3 is a structural schematic diagram of the gas pipe network node energy determination method provided by the present application;

[0035] Figure 4 This is a schematic diagram of the structure of the electronic device provided by the present invention. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0037] As an upstream unit, the petroleum catalytic cracking unit produces gas that can be used as fuel gas and fed into the gas pipeline network, so that the downstream units corresponding to the gas pipeline network nodes can recover and utilize the energy generated by the fuel gas.

[0038] For the safety of downstream devices, it is necessary to monitor the energy of the downstream devices corresponding to the gas pipeline network nodes. However, there is currently no effective method to obtain the energy of each node in the gas pipeline network, thus making it impossible to monitor the energy of the downstream devices.

[0039] In response, this invention provides a method for determining the energy of gas pipeline network nodes. Figure 1 This is a flowchart illustrating the method for determining the energy of gas pipeline network nodes provided by the present invention, as shown below. Figure 1 As shown, the method includes the following steps:

[0040] Step 110: Based on the gas flow direction of the flow nodes in the gas pipeline network, determine the gas flow direction of adjacent nodes. Adjacent nodes refer to nodes connected to the flow nodes.

[0041] Step 120: Based on the gas flow direction of the flow node and the gas flow direction of the adjacent nodes, determine the energy conservation equation of the flow node;

[0042] Step 130: Based on the energy conservation equation, determine the energy of the flow node and its adjacent nodes.

[0043] It should be noted that, for ease of explanation, the following embodiments are all based on... Figure 2 The gas pipeline network in the example is used for illustration, such as Figure 2 As shown, nodes 1, 7, and 8 are gas-producing nodes, nodes 2, 3, and 9 are gas-consuming nodes, and nodes 4, 5, and 6 are circulation nodes. Node 4 is a circulation node, and nodes 1 and 5 connected to node 4 are adjacent nodes. Node 5 is a circulation node, and nodes 2, 4, 6, and 8 connected to node 5 are adjacent nodes; node 6 is a circulation node, and nodes 3, 5, 7, and 9 connected to node 6 are adjacent nodes.

[0044] Assume that node 1 in the gas pipe network is a gas production node, i.e., the gas flow direction of node 1 is known, and the gas flow direction of node 1 is that the gas flows out of node 1 to node 4, i.e., gas outflow. In the case where the gas flow direction of node 1 is clear, the gas cannot flow in the opposite direction, so the gas flow direction of node 4 is that the gas flows into node 4 from node 1, i.e., gas inflow. Similarly, nodes 2, 3 and 9 are gas consumption nodes, and the gas flow direction is gas inflow; nodes 7 and 8 are gas production nodes, and the gas flow direction is gas outflow.

[0045] Node 1 is a gas production node, and assume that the gas energy flowing from node 1 to node 4 is Q 1,4 =P1, since the gas cannot flow in the opposite direction, i.e., node 4 cannot flow into gas from node 1, so the gas energy flowing from node 4 into node 1 is Q 4,1 =0. Similarly, node 7 is a gas production node, and assume that the gas energy flowing from node 7 to node 6 is Q 7,6 =P7, since the gas cannot flow in the opposite direction, i.e., node 6 cannot flow into gas from node 7, so the gas energy flowing from node 6 into node 7 is Q 6,7 =0. Node 8 is a gas production node, and assume that the gas energy flowing from node 8 to node 5 is Q 8,5 =P8, since the gas cannot flow in the opposite direction, i.e., node 5 cannot flow into gas from node 8, so the gas energy flowing from node 5 into node 8 is Q 5,8 =0.

[0046] Node 2 is a gas consumption node, and assume that the gas energy flowing from node 5 to node 2 is Q 5,2 =C2, since the gas cannot flow in the opposite direction, i.e., node 2 cannot flow into gas from node 5, so the gas energy flowing from node 2 into node 5 is Q 2,5 =0. Node 3 is a gas consumption node, and assume that the gas energy flowing from node 6 to node 3 is Q 6,3 =C3, since the gas cannot flow in the opposite direction, i.e., node 3 cannot flow into gas from node 6, so the gas energy flowing from node 3 into node 6 is Q 3,6 =0. Node 9 is a gas consumption node, and assume that the gas energy flowing from node 6 to node 9 is Q 6,9 =C9, since the gas cannot flow in the opposite direction, i.e., node 6 cannot flow into gas from node 9, so the gas energy flowing from node 6 into node 9 is Q 9,6 =0.

[0047] In addition, according to the energy conservation, the energy of the gas flowing into any node is equal to the energy of the gas flowing out of the node, so the energy conservation equations of each flow-through node can be established as follows:

[0048] Node 4: Q 1,4 +Q 5,4 =Q 4,1 +Q 4,5

[0049] Node 5: Q 4,5 +Q 2,5 +Q 8,5 +Q 6,5 =Q 5,4 +Q 5,2 +Q 5,8 +Q 5,6

[0050] Node 6: Q 5,6 +Q 3,6 +Q 7,6 +Q 9,6 =Q 6,5 +Q 6,3 +Q 6,7 +Q 6,9

[0051] In the formula, Q m,n represents the gas energy of the node m flowing to the node n. After the energy conservation equation is established, the energy of any node can be inversely deduced in the case that the energy of other nodes in the equation is determined, and then the energy of each node can be monitored in real time.

[0052] The gas pipe network node energy determination method provided by the embodiment of the application determines the energy conservation equation of the flow-through node based on the gas flow direction of the flow-through node and the gas flow direction of the adjacent node, so that the energy of the flow-through node and the energy of the adjacent node can be determined based on the energy conservation equation, and the energy of each node in the gas pipe network can be monitored.

[0053] Based on the above embodiment, the energy conservation equation of the flow-through node is determined based on the gas flow direction of the flow-through node and the gas flow direction of the adjacent node, including:

[0054] The gas composition of the flow-through node and the gas composition of the adjacent node are determined based on the gas flow direction of the flow-through node and the gas flow direction of the adjacent node.

[0055] The energy conservation equation of the flow-through node is determined based on the gas composition of the flow-through node, the gas composition of the adjacent node, and the heat value of each gas.

[0056] The energy conservation equation of the flow-through node is determined based on the gas composition of the flow-through node, the gas composition of the adjacent node, and the heat value of each gas, including:

[0057] The energy of the flow-through node and the energy of the adjacent node are determined based on the gas composition of the flow-through node, the gas composition of the adjacent node, and the heat value of each gas.

[0058] The energy conservation equation of the flow-through node is constructed based on the energy of the flow-through node and the energy of the adjacent node.

[0059] Based on the gas composition of the flow node, the gas composition of the adjacent node, and the gas heat value, the energy of the flow node and the energy of the adjacent node are determined, comprising:

[0060] Based on the gas composition of the flow node and the gas composition of the adjacent node, the gas material content of the flow node and the gas material content of the adjacent node are determined by using the conservation of mass;

[0061] Based on the gas material content of the flow node, the gas material content of the adjacent node, and the gas heat value, the energy of the flow node and the energy of the adjacent node are determined.

[0062] Specifically, the energy conservation equation of the flow node is determined based on the energy of the flow node and the adjacent node, and the energy of the flow node or the adjacent node can be determined based on the following formula:

[0063] Q i,j =q i,j ∑(H m X i ,m)

[0064] In the formula, Q i,j represents the gas energy of node i flowing to node j, q i,j represents the gas material content of node i flowing to node j, H m represents the gas heat value, and X i,m represents the gas composition. In addition, since the gas flow is irreversible, it can be obtained that if Q i,j > 0, then Q j,i = 0, q j,i = 0.

[0065] In which, the gas material content also follows the conservation of mass, that is, the material conservation equation corresponding to each flow node is:

[0066] Node 4: q 1,4 + q 5,4 = q 4,1 + q 4,5

[0067] Node 5: q 4,5 + q 2,5 + q 8,5 + q 6,5 = q 5,4 + q 5,2 + q 5,8 + q 5,6

[0068] Node 6: q 5,6 + q 3,6 + q 7,6 + q 9,6 = q 6,5 + q6,3 +q 6,7 +q 6,9

[0069] Further, the single component of each flow node also follows the law of conservation of mass, that is, the mass conservation equation of the single component of each flow node is:

[0070] Node 4: q 1,4 X 1,m +q 5,4 X 5,m = (q 4,1 +q 4,5 ) X 4,m

[0071] Node 5: q 4,5 X 4,m +q 2,5 X2,m+q 8,5 X8,m+q 6,5 X6,m= (q 5,4 +q 5,2 +q 5,8 +q 5,6 ) X5,mNode 6: q 5,6 X5,m+q 3,6 X3,m+q 7,6 X7,m+q 9,6 X9,m= (q 6,5 +q 6,3 +q 6,7 +q 6,9 ) X6,m

[0072] According to the above single component mass conservation equation, the gas material content of any one or more nodes can be determined, and the gas material content of the remaining nodes can be obtained according to the above mass conservation equation.

[0073] Next, according to the energy determination formula of the flow node or the adjacent node, the energy of the flow node and the energy of the adjacent node are calculated, and then the energy conservation equation can be constructed according to the energy of the flow node and the energy of the adjacent node.

[0074] Based on any of the above embodiments, based on the gas flow direction of the flow node in the gas pipe network, the gas flow direction of the adjacent node is determined, comprising:

[0075] In the case that the gas flow direction of the flow node is gas outflow, the gas flow direction of the adjacent node is gas inflow.

[0076] For example, Figure 2As shown, it is assumed that node 1 in the gas pipe network is a gas production node, i.e., the gas flow direction of node 1 is known, and the gas flow direction of node 1 is that the gas flows out of node 1 to node 4, i.e., gas outflow. In the case where the gas flow direction of node 1 is clear, the gas cannot flow in the opposite direction, so the gas flow direction of node 4 is that the gas flows into node 4 from node 1, i.e., gas inflow. Similarly, the gas flow directions of other adjacent nodes can be determined according to the above method.

[0077] Based on any of the above embodiments, determining the gas flow direction of the adjacent node further comprises:

[0078] Based on the gas flow direction of the gas production node or the gas consumption node in the gas pipe network, determining the gas flow direction of the flow-through node.

[0079] Specifically, the gas flow direction of the gas production node or the gas consumption node in the gas pipe network is usually known, so that after determining the gas flow direction of the gas production node or the gas consumption node, the gas flow direction of the flow-through node connected to the gas production node or the gas consumption node can be obtained.

[0080] The gas pipe network node energy determination device provided by the present application will be described below. The gas pipe network node energy determination device described below can be referred to in correspondence with the gas pipe network node energy determination method described above.

[0081] Based on any of the above embodiments, the present application further provides a gas pipe network node energy determination device, as shown in the figure, which comprises: Figure 3

[0082] A flow direction determination unit 310 is configured to determine the gas flow direction of an adjacent node based on the gas flow direction of a flow-through node in a gas pipe network, wherein the adjacent node refers to a node connected to the flow-through node.

[0083] An equation determination unit 320 is configured to determine an energy conservation equation of the flow-through node based on the gas flow direction of the flow-through node and the gas flow direction of the adjacent node.

[0084] An energy determination unit 330 is configured to determine the energy of the flow-through node and the adjacent node based on the energy conservation equation.

[0085] Based on any of the above embodiments, the equation determination unit 320 comprises:

[0086] A component determination unit is configured to determine the gas component of the flow-through node and the gas component of the adjacent node based on the gas flow direction of the flow-through node and the gas flow direction of the adjacent node.

[0087] An energy equation determination unit is configured to determine the energy conservation equation of the flow-through node based on the gas component of the flow-through node, the gas component of the adjacent node, and the heat value of each gas.​

[0088] According to any one of the above embodiments, the energy equation determination unit comprises:

[0089] An energy determination unit is configured to determine the energy of the flow-through node and the energy of the adjacent node based on the gas composition of the flow-through node, the gas composition of the adjacent node, and the heat value of each gas.

[0090] An equation construction unit is configured to construct the energy conservation equation of the flow-through node based on the energy of the flow-through node and the energy of the adjacent node.

[0091] According to any one of the above embodiments, the energy determination unit comprises:

[0092] A material content determination unit is configured to determine the gas material content of the flow-through node and the gas material content of the adjacent node based on the gas composition of the flow-through node and the gas composition of the adjacent node by using the material conservation.

[0093] An energy determination sub-unit is configured to determine the energy of the flow-through node and the energy of the adjacent node based on the gas material content of the flow-through node, the gas material content of the adjacent node, and the heat value of each gas.

[0094] According to any one of the above embodiments, the flow determination unit 310 is configured to:

[0095] In the case that the gas flow direction of the flow-through node is gas outflow, the gas flow direction of the adjacent node is gas inflow.

[0096] According to any one of the above embodiments, the device further comprises:

[0097] A flow-through node flow direction determination unit is configured to determine the gas flow direction of the flow-through node based on the gas flow direction of the gas production node or the gas consumption node in the gas pipeline network before determining the gas flow direction of the adjacent node.

[0098] Figure 4 is a structural schematic diagram of an electronic device provided by the present application, such as Figure 4As shown, the electronic device can include a processor 410, a memory 420, a communications interface 430, and a communications bus 440, wherein the processor 410, the memory 420, and the communications interface 430 complete mutual communication through the communications bus 440. The processor 410 can invoke a logic instruction in the memory 420 to execute a gas pipe network node energy determination method, which includes: determining a gas flow direction of an adjacent node based on a gas flow direction of a flow-through node in a gas pipe network, the adjacent node referring to a node connected to the flow-through node; determining an energy conservation equation of the flow-through node based on the gas flow direction of the flow-through node and the gas flow direction of the adjacent node; and determining energy of the flow-through node and the adjacent node based on the energy conservation equation.

[0099] In addition, the logic instruction in the memory 420 described above can be implemented in the form of a software functional unit and sold or used as an independent product, which can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application essentially or the part that contributes to the prior art or part of the technical solutions can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a plurality of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in various embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and various media that can store program codes.

[0100] On the other hand, the present application also provides a computer program product, which includes a computer program stored on a non-transitory computer readable storage medium, and the computer program includes program instructions, when the program instructions are executed by a computer, the computer can execute the gas pipe network node energy determination method provided by the above-mentioned methods, which includes: determining a gas flow direction of an adjacent node based on a gas flow direction of a flow-through node in a gas pipe network, the adjacent node referring to a node connected to the flow-through node; determining an energy conservation equation of the flow-through node based on the gas flow direction of the flow-through node and the gas flow direction of the adjacent node; and determining energy of the flow-through node and the adjacent node based on the energy conservation equation.

[0101] In yet another aspect, the present application also provides a non-transitory computer readable storage medium having stored thereon a computer program, which, when executed by a processor, implements the gas pipeline network node energy determination method provided above, which comprises: determining a gas flow direction of a neighboring node based on a gas flow direction of a flow-through node in a gas pipeline network, the neighboring node being a node connected to the flow-through node; determining an energy conservation equation of the flow-through node based on the gas flow direction of the flow-through node and the gas flow direction of the neighboring node; and determining the energy of the flow-through node and the neighboring node based on the energy conservation equation.

[0102] The device embodiments described above are merely illustrative, wherein the units described as separate components can or can not be physically separate, and the components displayed as units can or can not be physical units, i.e., can be located in one place or distributed on multiple network units. Part or all of the modules can be selected to achieve the purpose of the embodiment scheme according to actual needs. Those skilled in the art can understand and implement without creative labor.

[0103] From the above description of the embodiments, those skilled in the art can clearly understand that the embodiments can be realized by means of software plus necessary general hardware platforms, and of course can also be realized by hardware. Based on such understanding, the above technical solutions, essentially or in terms of contribution to the prior art, can be embodied in the form of a software product, which can be stored in a computer readable storage medium, such as a ROM / RAM, a magnetic disk, an optical disk, etc., and includes a number of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute the methods described in each embodiment or some parts of the embodiments.

[0104] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to some technical features; and these modifications or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for determining the energy of a gas pipeline network node, characterized in that, include: Based on the gas flow direction of the flow nodes in the gas pipeline network, the gas flow direction of adjacent nodes is determined, where adjacent nodes refer to nodes connected to the flow nodes. Based on the gas flow direction of the flow node and the gas flow direction of the adjacent nodes, the energy conservation equation of the flow node is determined. Based on the energy conservation equation, the energy of the flow node and the adjacent nodes is determined; wherein, after determining the energy conservation equation, and given the energy of other nodes in the energy conservation equation, the energy of the flow node and the adjacent nodes is deduced in reverse. The determination of the energy conservation equation for the flow node based on the gas flow direction of the flow node and the gas flow direction of the adjacent nodes includes: Based on the gas flow direction of the flow node and the gas flow direction of the adjacent nodes, the gas composition of the flow node and the gas composition of the adjacent nodes are determined. Based on the gas composition of the flow node, the gas composition of the adjacent nodes, and the calorific value of each gas, the energy conservation equation of the flow node is determined. The determination of the energy conservation equation for the flow node based on the gas composition of the flow node, the gas composition of the adjacent nodes, and the calorific value of each gas includes: Based on the gas composition of the flow node, the gas composition of the adjacent nodes, and the calorific value of each gas, the energy of the flow node and the energy of the adjacent nodes are determined. Based on the energy of the flow node and the energy of the adjacent nodes, construct the energy conservation equation for the flow node; Determining the energy of the flow node and the energy of the adjacent nodes based on the gas composition of the flow node, the gas composition of the adjacent nodes, and the calorific value of each gas includes: Based on the gas composition of the flow node and the gas composition of the adjacent node, the gas material content of the flow node and the gas material content of the adjacent node are determined by utilizing the law of conservation of mass. The energy of the flow node and the energy of the adjacent node are determined based on the gas and material content of the flow node, the gas and material content of the adjacent node, and the calorific value of each gas.

2. The method for determining the energy of gas pipeline network nodes according to claim 1, characterized in that, The determination of the gas flow direction of adjacent nodes based on the gas flow direction of the flow nodes in the gas pipeline network includes: When the gas flow direction at the circulation node is gas outflow, the gas flow direction at the adjacent node is gas inflow.

3. The method for determining the energy of gas pipeline network nodes according to claim 1, characterized in that, The process of determining the gas flow direction of adjacent nodes also includes: Based on the gas flow direction of the gas-producing or gas-consuming nodes in the gas pipeline network, the gas flow direction of the circulation node is determined.

4. A device for determining the energy of a gas pipeline network node, characterized in that, include: The flow direction determination unit is used to determine the gas flow direction of adjacent nodes based on the gas flow direction of the flow nodes in the gas pipeline network. The adjacent nodes refer to the nodes connected to the flow nodes. The equation determination unit is used to determine the energy conservation equation of the flow node based on the gas flow direction of the flow node and the gas flow direction of the adjacent nodes. An energy determination unit is used to determine the energy of the flow node and the adjacent nodes based on the energy conservation equation; wherein, after determining the energy conservation equation, and given the energy of other nodes in the energy conservation equation, the energy of the flow node and the adjacent nodes is deduced in reverse. The determination of the energy conservation equation for the flow node based on the gas flow direction of the flow node and the gas flow direction of the adjacent nodes includes: Based on the gas flow direction of the flow node and the gas flow direction of the adjacent nodes, the gas composition of the flow node and the gas composition of the adjacent nodes are determined. Based on the gas composition of the flow node, the gas composition of the adjacent nodes, and the calorific value of each gas, the energy conservation equation of the flow node is determined. The determination of the energy conservation equation for the flow node based on the gas composition of the flow node, the gas composition of the adjacent nodes, and the calorific value of each gas includes: Based on the gas composition of the flow node, the gas composition of the adjacent nodes, and the calorific value of each gas, the energy of the flow node and the energy of the adjacent nodes are determined. Based on the energy of the flow node and the energy of the adjacent nodes, construct the energy conservation equation for the flow node; Determining the energy of the flow node and the energy of the adjacent nodes based on the gas composition of the flow node, the gas composition of the adjacent nodes, and the calorific value of each gas includes: Based on the gas composition of the flow node and the gas composition of the adjacent node, the gas material content of the flow node and the gas material content of the adjacent node are determined by utilizing the law of conservation of mass. The energy of the flow node and the energy of the adjacent node are determined based on the gas and material content of the flow node, the gas and material content of the adjacent node, and the calorific value of each gas.

5. An electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the gas pipeline node energy determination method as described in any one of claims 1 to 3.

6. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the gas pipeline node energy determination method as described in any one of claims 1 to 3.

7. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the gas pipeline node energy determination method as described in any one of claims 1 to 3.

Images