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Natural gas network operation optimization method

A technology of network operation and optimization method, applied in the direction of AC network circuit, design optimization/simulation, electrical components, etc., can solve problems such as optimization difficulties, and achieve the effect of easy subsequent processing and fast solution speed

Active Publication Date: 2020-07-10
SOUTH CHINA UNIV OF TECH
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  • Claims
  • Application Information

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Problems solved by technology

[0007] In order to solve the difficulties brought about by the optimization of natural gas pipeline airflow equations considering the direction, the present invention discloses a natural gas pipeline airflow description method considering the change of transmission direction and a natural gas network operation optimization method including optimization problems of such constraints

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Embodiment Construction

[0051] The specific implementation of the present invention will be further described below in conjunction with accompanying drawing and embodiment, but the implementation and protection of the present invention are not limited to this, it should be pointed out that if there are any processes or parameters not specified in detail below, those skilled in the art It can be understood or realized with reference to the prior art.

[0052] Such as figure 2 , a method for optimizing the operation of a natural gas network, comprising the following steps:

[0053] Step 1: Construct a natural gas pipeline network model considering the pipeline airflow direction;

[0054] Step 2: Rewrite the equality constraints in the model as the subtraction of two convex functions into an equivalent form composed of two inequality constraints; and further rewrite all the inequality constraints in the form of the subtraction of two convex functions as less than or equal to 0 form;

[0055]Step 3: ...

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Abstract

The invention discloses a natural gas network operation optimization method. According to the natural gas pipeline gas flow description method considering the transmission direction change and the natural gas network operation optimization of the optimization problem containing the constraints, the direction of the pipeline gas flow can be described by using linear and quadratic constraints underthe condition that integer variables are not introduced, subsequent processing is facilitated, and the solving speed is higher; in cooperation with a PCCP convexity solving method, the model can be relaxed and convexity to approach the global optimal point, and the application of distributed optimization methods such as Benders decomposition is also facilitated.

Description

technical field [0001] The invention relates to the field of optimal scheduling of comprehensive energy systems, in particular to a method for optimizing the operation of a natural gas network. Background technique [0002] In the optimal dispatching of the integrated energy system, the difficulty of solving the optimization model of the electric-gas interconnection system mainly comes from the non-convex problem constrained by the airflow equation of the natural gas network pipeline. For the power network, the widely used linear DC power flow can be used for modeling to ensure the convexity of the model. Natural gas networks, on the other hand, are more complex. Since the frictional force experienced by the airflow in the pipeline is proportional to the square of the airflow but the direction is opposite to the direction of the airflow, the current various models describing the airflow in the pipeline have absolute value symbols that are difficult to deal with in optimizat...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00G06Q50/06G06F30/20
CPCG06Q50/06H02J3/00
Inventor 史守圆余涛
Owner SOUTH CHINA UNIV OF TECH