Electric-gas distribution network flexible planning method considering flexible constraint and full cycle cost

A gas distribution network, full-cycle technology, applied in electrical components, circuit devices, AC network circuits, etc., can solve problems such as the inability to reflect the nature of the uncertainty of the problem

Active Publication Date: 2019-05-31
HUANAN IND TECH RES INST OF ZHEJIANG UNIV +1
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Problems solved by technology

The above-mentioned literature considers uncertainty through multi-scenario simulation or mathematical description, but

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  • Electric-gas distribution network flexible planning method considering flexible constraint and full cycle cost
  • Electric-gas distribution network flexible planning method considering flexible constraint and full cycle cost
  • Electric-gas distribution network flexible planning method considering flexible constraint and full cycle cost

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Embodiment 1

[0118] 1) System parameters

[0119] In this paper, the electricity-gas distribution network coupled by a 13-node distribution network and a 10-node low-voltage natural gas network is used for simulation analysis. Its topology is as follows: Figure 4 shown. The distribution network has 12 load nodes and 1 substation node, 17 planned 20kV lines, 13 nodes are substation nodes, and other nodes are load nodes; the natural gas network has 8 load nodes and 2 natural gas station nodes, and 10 planned pipelines , nodes 9 and 10 are natural gas station nodes, and other nodes are load nodes.

[0120] Figure 4 In the figure, the solid line represents the original line or pipeline in the network, and the dotted line represents the line or pipeline to be newly built. The coupling relationship between distribution network and natural gas network is shown in Table 1. Table 2 and Table 3 show the basic load forecasts of typical days in winter and summer in 6 periods, and increase at a r...

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Abstract

The invention discloses an electric-gas distribution network flexible planning method considering a flexible constraint and full cycle cost. The method comprises the following steps of 1) establishingan electric-gas distribution network typical planning model based on CCHP coupling, which includes establishing a target function and a constraint condition; 2) introducing flexible planning elements, which includes a flexible power flow constraint and full-cycle planning cost; and 3) forming a flexible planning model and solving, which includes flexible planning model description and call MOSEKsolution. A CCHP-coupled electric-gas distribution network power flow model based on a second-order cone model is established. In the model, non-convex and nonlinear terms in a traditional power flowequation are eliminated and effective solution can be performed while calculation accuracy is ensured. For various uncertainties in planning, the concept of the flexible constraint is introduced intothe planning model, which improves the robust adaptability of a planning scheme to various uncertain factors.

Description

technical field [0001] The invention relates to a collaborative flexible planning method for electric-gas distribution network based on CCHP coupling and considering flexible power flow constraints and full-cycle planning costs. Background technique [0002] Traditional power grid planning usually does not limit the natural gas supply of gas turbine units, so the power grid and natural gas network are separated for independent planning. With the increase of natural gas extraction and application, as well as the development and application of distributed micro gas turbines, the degree of coupling between the power grid and the natural gas network is deepening, and the traditional separate planning method is no longer suitable. Therefore, it is very necessary to study the coupling mode and collaborative planning method of power network and natural gas network. Literature [1] explores the problem of collaborative planning of electrical-gas integrated energy systems considering...

Claims

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Application Information

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IPC IPC(8): H02J3/00
Inventor 郭创新王惠如
Owner HUANAN IND TECH RES INST OF ZHEJIANG UNIV
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