Power distribution network multi-dimensional typical scene generation method based on load clustering and network equivalence

A technology of distribution network and distribution network, which is applied in the direction of AC network circuits, electrical components, circuit devices, etc., can solve the problems of ignoring the difference of fluctuation rules, indistinct local characteristics, and large limitations, so as to reduce calculation, The effect of reducing the difficulty of data processing and improving applicability

Active Publication Date: 2019-11-22
WUHAN UNIV +1
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Problems solved by technology

[0003] (1) The evaluation results of distribution voltage distribution characteristics obtained by selecting typical days and typical times are highly subjective, poor in convergence, and limited in accuracy
[0004] (2) The evaluation results of distribu

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  • Power distribution network multi-dimensional typical scene generation method based on load clustering and network equivalence
  • Power distribution network multi-dimensional typical scene generation method based on load clustering and network equivalence
  • Power distribution network multi-dimensional typical scene generation method based on load clustering and network equivalence

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Example Embodiment

[0036] The embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0037] The method of generating multi-dimensional typical scenes based on load clustering and network equivalence in this embodiment is to comprehensively consider the load of each node, the characteristics of distributed generation power fluctuations, and combine its position in the distribution network and the impedance of each power supply line to be objective and accurate. Multi-dimensional typical scene generation method.

[0038] This embodiment is implemented through the following technical solutions: figure 1 As shown, a method for generating multi-dimensional typical scenarios of a distribution network based on load clustering and network equivalence includes the following steps:

[0039] In the first step, the load nodes are divided into n categories according to power fluctuation characteristics, and distributed power generation is divided into...

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Abstract

The invention relates to a power distribution network operation management technology, and specifically relates to a power distribution network multi-dimensional typical scene generation method basedon load clustering and network equivalence. The method comprises the following steps: 1, dividing load nodes into n types according to power fluctuation features, and dividing distributed power generation into photovoltaic power generation and wind power generation; 2, performing equivalent processing on the grid structure of the power distribution network, and simplifying the grid structure inton + 2 single-node power distribution networks; 3, respectively generating n + 1-dimensional and 1-dimensional typical scenes for voltage drops of equivalent lines of load/photovoltaic power generationand wind power generation; and 4, restoring the typical line voltage drop scene to each load/distributed power generation node power typical scene of the power distribution network. According to themethod, the problem of difficulty in voltage distribution evaluation in the power distribution network is solved, so that access position planning of distributed power supplies, loads, power electronic equipment and the like has a better effect. According to the multi-dimensional typical scene generation method, the calculation capability is not influenced by the number of nodes, and the multi-dimensional typical scene generation of the large-scale power distribution network operation state can be realized.

Description

technical field [0001] The invention belongs to the technical field of distribution network operation management, and in particular relates to a multi-dimensional typical scene generation method of a distribution network based on load clustering and network equivalence. Background technique [0002] With the development of modern cutting-edge manufacturing industry, users have higher and higher requirements for power supply quality. At the same time, the large number of distributed power generation and electric vehicle charging piles have caused great interference to the power system. In order to better improve the quality of power supply and reduce the impact of distributed power generation and electric vehicle charging pile access, it is very critical and necessary to evaluate the voltage distribution characteristics of the distribution network and select the best access location. However, considering the fluctuation and randomness of load and distributed generation, it is...

Claims

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Application Information

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IPC IPC(8): H02J3/00H02J3/38
CPCH02J3/00
Inventor 孙建军李博余攀查晓明王朝亮许烽
Owner WUHAN UNIV
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