CN109977555A - A kind of design method suitable for the optimization operation of regional gas distributing system - Google Patents

A kind of design method suitable for the optimization operation of regional gas distributing system Download PDF

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CN109977555A
CN109977555A CN201910243112.2A CN201910243112A CN109977555A CN 109977555 A CN109977555 A CN 109977555A CN 201910243112 A CN201910243112 A CN 201910243112A CN 109977555 A CN109977555 A CN 109977555A
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pipe network
energy consumption
pipeline
optimization operation
displacement
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董平省
安云朋
刘少山
徐庆磊
***
李广群
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China National Petroleum Corp
China Petroleum Pipeline Engineering Corp
China Petroleum Pipeline Engineering Corp Design Branch
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China National Petroleum Corp
China Petroleum Pipeline Engineering Corp
China Petroleum Pipeline Engineering Corp Design Branch
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00Computer-aided design [CAD]
    • G06F30/10Geometric CAD
    • G06F30/17Mechanical parametric or variational design
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00Computer-aided design [CAD]
    • G06F30/10Geometric CAD
    • G06F30/18Network design, e.g. design based on topological or interconnect aspects of utility systems, piping, heating ventilation air conditioning [HVAC] or cabling
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00Computer-aided design [CAD]
    • G06F30/20Design optimisation, verification or simulation
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F2113/00Details relating to the application field
    • G06F2113/14Pipes

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  • Theoretical Computer Science (AREA)
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  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Engineering & Computer Science (AREA)
  • Evolutionary Computation (AREA)
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  • Pure & Applied Mathematics (AREA)
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  • Mathematical Analysis (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)
  • Pipeline Systems (AREA)

Abstract

The invention discloses a kind of design methods suitable for the optimization operation of regional gas distributing system, this method comprises: according to pipeline actual motion report each in pipe network, it obtains optimal transportation scheme of each pipeline under different pressures step, different throughput rate steps, composition pipe network in pipe network and optimizes operation data library;Using the energy consumption data in pipe network optimization operation data library, using displacement as horizontal axis, energy consumption is the longitudinal axis, draws the energy consumption curve within the scope of the displacement and obtains pipeline energy consumption model;The optimization operation result of pipe network is calculated using pipeline energy consumption model each in pipe network.The invention has the benefit that optimizing each pipeline energy consumption model in operation data library and pipe network by establishing pipe network, and according to different pipe network tolerance allocation plans, it calculates analysis and obtains pipe network optimization operation result, foundation as adjustment pipe network operation, pipe network operation energy consumption can be significantly reduced, operating cost is reduced, and this method may be used on meeting different gas transmission tasks in different pipe network optimization operating energy loss.

Description

A kind of design method suitable for the optimization operation of regional gas distributing system
Technical field
The present invention relates to natural gas line design fields, are suitable for regional natural gas in particular to one kind The design method of pipe network optimization operation.
Background technique
With the high speed development of China's natural gas pipe-line construction in recent years, China has formed northwest, northeast, ALFISOL IN CENTRAL etc. Multiple large area gas distributing systems, each pipeline be each other or combined operating or contact operation in pipe network.It is respectively managed in pipe network The Proper Match of road throughput rate directly affects the whole energy consumption of pipe network, with the increase year by year of pipe network displacement, the energy consumption of pipe network Also increasing, conduit running unit guarantee pipe network complete conveying task while, it is energy-saving be need pay close attention to it is another A emphasis.
Each pipeline is due to construction period difference, caliber, design pressure, design throughput, the compressor of each pipeline in pipe network Group driving method etc. is also not quite similar, and the energy consumption generated in each pipe conveying procedure is also not quite similar.Facing different delivery pressures When power, the task of conveying capacity, with greater need for that there can be a set of effective optimization operating scheme, conveying task not only can satisfy, but also Operation energy consumption can be saved.
Currently, gas distributing system steady-state operation optimisation technique achieves certain progress and development both at home and abroad, have developed Steady-state operation for specific pipeline optimizes program, but all has on the branch and loop due to needing the gas distributing system studied Compressor, pressure, the throughput rate distribution of the tie point of route have diversity in pipe network, cause calculation amount larger, simplify processing The usual effect of optimization of model is poor, and since On-the-spot factor is complicated and changeable, practical application compares less.
Summary of the invention
To solve the above problems, the purpose of the present invention is to provide a kind of general, efficient, effective natural gases Pipe network optimizing operation method reduces pipe network operation energy consumption.
The present invention provides it is a kind of suitable for regional gas distributing system optimization operation design method, this method include with Lower step:
Step 101: establish pipe network optimization operation data library:
According to pipeline actual motion report each in pipe network, and in conjunction with conduit running unit, determine that each pipeline can in pipe network Operating pressure existing for energy constructs the throughput rate step under each pressure step, and using conduit running energy consumption cost as optimum target, Obtain optimal transportation scheme of each pipeline under different pressures step, different throughput rate steps in pipe network, composition pipe network optimization operation Database;
Step 102: establish each pipeline energy consumption model in pipe network:
Optimize the energy consumption data in operation data library, using displacement as horizontal axis, energy consumption (power consumption according to the pipe network of step 101 Amount, air consumption) it is the longitudinal axis, the energy consumption curve within the scope of the displacement is drawn, and obtain using least square method curve-fitting method Pipeline throughput rate and energy consumption curve under to certain pressure, as pipeline energy consumption model;
Step 103: the optimization operation result of pipe network is calculated, is specifically included:
Step 1: determine each gas source amount of pipe network,
Step 2: determine the operating pressure and environmental parameter of each pipeline in pipe network,
Step 3: determine the energy consumption unit price of each pipeline in pipe network,
Step 4: determining pipe network tolerance allocation plan, and calculated according to energy consumption unit price and the pipeline energy consumption model of step 102 Energy consumption cost under single conduit difference displacement, to obtain the energy consumption total cost of pipe network;
Step 5: the optimization operation result for selecting pipe network energy charge to use the allocation plan of minimum value as pipe network, and by result Display.
It is further improved as of the invention, in step 103, by using the cyclical function in VB (Visual Basic) Obtain different pipe network tolerance allocation plans.
It is further improved as of the invention, in step 103, passes through graphic interface and show that the optimization of pipe network runs knot Fruit.
The invention has the benefit that optimize each pipeline energy consumption model in operation data library and pipe network by establishing pipe network, And according to different pipe network tolerance allocation plans, the optimization operation result of pipe network is calculated and analyze to obtain, can be quickly obtained Effective gas distributing system optimizing operation method reduces pipe network operation energy consumption, greatly reduces operating cost, and this method It may be used on meeting different gas transmission tasks in different pipe network optimization operating energy loss.
Detailed description of the invention
Fig. 1 is a kind of design method suitable for the optimization operation of regional gas distributing system described in the embodiment of the present invention Flow chart;
Fig. 2 is the idiographic flow schematic diagram of step 103 in Fig. 1;
Fig. 3 is a kind of design method suitable for the optimization operation of regional gas distributing system described in the embodiment of the present invention Pipeline throughput rate and energy consumption curve schematic diagram.
Specific embodiment
The present invention is described in further detail below by specific embodiment and in conjunction with attached drawing.
As shown in Figure 1-3, a kind of setting suitable for the optimization operation of regional gas distributing system described in the embodiment of the present invention Meter method, method includes the following steps:
Step 101: establish pipe network optimization operation data library: according to pipeline actual motion report each in pipe network, and and pipeline Run unit combines, and determines each pipeline operating pressure that may be present in pipe network, constructs the throughput rate step under each pressure step, and Using conduit running energy consumption cost as optimum target, each pipeline is obtained in pipe network under different pressures step, different throughput rate steps Optimal transportation scheme, composition pipe network optimize operation data library;
Step 102: establishing each pipeline energy consumption model in pipe network: being optimized in operation data library according to the pipe network of step 101 Energy consumption data, using displacement as horizontal axis, energy consumption (power consumption, air consumption) is the longitudinal axis, and the energy consumption drawn within the scope of the displacement is bent Line, and pipeline throughput rate and energy consumption curve under certain pressure, as pipeline energy consumption are obtained using least square method curve-fitting method Model;
Step 103: the optimization operation result of pipe network is calculated, is specifically included:
Step 1: determining each gas source amount of pipe network;
Step 2: determining the operating pressure and environmental parameter of each pipeline in pipe network;
Step 3: determine the energy consumption unit price of each pipeline in pipe network,
Step 4: determining pipe network tolerance allocation plan, and calculated according to energy consumption unit price and the pipeline energy consumption model of step 102 Energy consumption cost under single conduit difference displacement, to obtain the energy consumption total cost of pipe network;
Step 5: the optimization operation result for selecting pipe network energy charge to use the allocation plan of minimum value as pipe network, and by result Display.
Further, different pipe network tolerance allocation plans is obtained by using the cyclical function in VB.
Further, the optimization operation result of pipe network is shown by graphic interface.
When specifically used:
It establishes pipe network optimization operation data library: being transported in conjunction with the nearly 3 years actual motion reports of pipeline each in pipe network, and with pipeline Row unit combines, and determines each pipeline operating pressure that may be present in pipe network, and construct the throughput rate step under each pressure step.With Guarantee that pipeline overall operation is averaged high pressure as theoretical basis, displacement step operating condition is calculated, is counted under single operating condition, is managed The power consumption (electric drive compressor group) and air consumption (combustion drive compressor group) of road system, calculate in conjunction with existing electricity price and gas price The energy consumption cost of the operating condition out.The a variety of machine modes that open are carried out for key node throughput rate operating condition to compare, and are determined and optimal are opened machine scheme. Using conduit running energy consumption cost as optimum target, the displacement step within the scope of full displacement is calculated.It based on this, can be with It obtains under single pressure step, the optimized operation scheme under the full displacement of single conduit, further, under different pressures step Throughput rate step optimizes operating analysis, finds out the optimized operation scheme that each pipeline respectively conveys operating condition.By pipelines all in pipe network Optimal transportation scheme composition pipe network under different pressures step, different throughput rate steps optimizes operation data library.It is with certain pipeline Example, the pressure step of construction have N1A, the throughput rate step under each pressure step has N2It is a, then the corresponding optimization operation of the pipeline Operating condition number is N1×N2It is a.
Pipe network optimization operation data library may be either that pipe network optimization operation provides basic data, find out each conveying operating condition and energy consumption Relationship, can also quickly provide the single conduit optimal operation mode under corresponding pressure, throughput rate for conduit running personnel.
Establish each pipeline energy consumption model in pipe network: since pipeline energy consumption and compressor station energy supply balance each other, natural gas tube Apparent second-degree parabola rule is presented between single conduit operation energy consumption in net and pipeline displacement.In certain displacement In range, machine mode is substantially stationary for pipeline optimal opening, with the increase of displacement, the air consumption and power consumption of pipe-line system with Parabolically property increases displacement, and therefore, using displacement as horizontal axis, power consumption and air consumption are the longitudinal axis, draws the displacement model Enclose interior energy consumption curve, use least square method for the curve-fitting data method of principle, to optimize database energy consumption data into After row processing, the optimization method group within the scope of the displacement is obtained.Within the scope of full displacement, energy consumption curve is intended paragraph by paragraph Close, building displacement and energy consumption (air consumption and power consumption) between mathematical relationship (as shown in figure 3, horizontal axis variable be displacement, Longitudinal axis variable is air consumption), it lays a good foundation to advanced optimize analysis.
Calculate the optimization operation result of pipe network: usual gas distributing system has multiple gas sources, and each gas source can be by a plurality of pipeline It is delivered to destination.Each single conduit operating pressure grade has differences in gas distributing system, its energy consumption of different operating pressures Characteristic is different, it is determined that the operating pressure of each pipeline, environmental parameter have determined that the optimization that the pipeline uses in optimization process Energy consumption model;Each single conduit generates energy consumption in pipe network, wherein electricity drives unit power consumption, unit gas consumption, each single conduit are driven in combustion Electricity price, gas price have differences, after determining the electricity price of each single conduit, gas price, in conjunction with the pipeline energy consumption model having determined, just The relationship between pipeline displacement and energy consumption cost has been determined indirectly;
For the gas source of a plurality of pipeline connection, such as connecting the gas source has 3 pipelines, and the total air demand of gas source is Q, firstly, really The tolerance of fixed first pipeline (pipeline 1) is Q1, then determines that the tolerance of Article 2 pipeline (pipeline 2) is Q2, then, Article 3 The tolerance of pipeline (pipeline 3) is Q3=Q-Q1-Q2.If these pipelines are connected to other pipelines in downstream, according to other gas sources Air demand, also can determine that the displacement of downstream line, according to the conservation of mass, the gas transmission of each pipeline in available full pipe network Amount constitutes a scheme of pipe network tolerance distribution, is defined as tolerance allocation plan 1.The displacement of each pipeline determines in pipe network Afterwards, the optimization operation equation group of each single conduit is brought into, the power consumption values of available corresponding single conduit, comprehensive energy consumption is monovalent to be obtained The energy consumption cost of single conduit under to the displacement.The energy consumption cost of single conduits all in pipe network is summed, tolerance can be obtained The pipe network energy consumption total cost of allocation plan 1.
Then, according to each pipeline displacement range, using the cyclical function in VB, Q1 is constant, and Q2 increases, and corresponding Q3 subtracts Small, pipe network obtains " tolerance allocation plan 2 ", and the pipe network energy consumption total cost of the program can be obtained.It is continuously increased Q2, can be obtained several Scheme after circulation, starts the circulation of upper level Q1.After circulation, all possible tolerance allocation plan is obtained pair The pipe network energy consumption cost answered, is screened out from it minimum value, obtains the optimization operation result of entire gas distributing system.
After obtaining pipe network optimization operation result, the starting compressor station scheme of corresponding each pipeline, each compressor station are opened into machine The operation of each pipeline displacement of scheme, this programme, this programme each pipeline power consumption values (power consumption and air consumption), each pipeline of this programme Expense, this programme pipe network operation total cost are presented on interface, for production run personnel use, as adjustment pipe network operation according to According to.
It is merely a preferred embodiment of the present invention, is not intended to restrict the invention, for the technology of this field described in upper For personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.

Claims (3)

1. a kind of design method suitable for the optimization operation of regional gas distributing system, which is characterized in that this method includes following Step:
Step 101: establish pipe network optimization operation data library:
According to pipeline actual motion report each in pipe network, and in conjunction with conduit running unit, determine that each pipeline may be deposited in pipe network Operating pressure, construct the throughput rate step under each pressure step, and using conduit running energy consumption cost as optimum target, obtain Optimal transportation scheme of each pipeline under different pressures step, different throughput rate steps, composition pipe network optimize operation data in pipe network Library;
Step 102: establish each pipeline energy consumption model in pipe network:
Optimize the energy consumption data in operation data library according to the pipe network of step 101, using displacement as horizontal axis, energy consumption is the longitudinal axis, is drawn The energy consumption curve within the scope of the displacement is made, and pipeline throughput rate under certain pressure is obtained using least square method curve-fitting method With energy consumption curve, as pipeline energy consumption model;
Step 103: the optimization operation result of pipe network is calculated, is specifically included:
Step 1: determine each gas source amount of pipe network,
Step 2: determine the operating pressure and environmental parameter of each pipeline in pipe network,
Step 3: determine the energy consumption unit price of each pipeline in pipe network,
Step 4: determining pipe network tolerance allocation plan, and single is calculated according to energy consumption unit price and the pipeline energy consumption model of step 102 Energy consumption cost under pipeline difference displacement, to obtain the energy consumption total cost of pipe network;
Step 5: the optimization operation result for selecting pipe network energy charge to use the allocation plan of minimum value as pipe network, and result is shown Show.
2. a kind of design method suitable for the optimization operation of regional gas distributing system according to claim 1, feature It is, in step 103, different pipe network tolerance allocation plans is obtained by using the cyclical function in VB.
3. a kind of design method suitable for the optimization operation of regional gas distributing system according to claim 1, feature It is, in step 103, the optimization operation result of pipe network is shown by graphic interface.
CN201910243112.2A 2019-03-27 2019-03-27 A kind of design method suitable for the optimization operation of regional gas distributing system Pending CN109977555A (en)

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CN113775928A (en) * 2021-09-08 2021-12-10 中海石油气电集团有限责任公司 Dispatching method of LNG receiving station external transmission system with matched long transmission pipeline

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Application publication date: 20190705