Dynamic reconstruction method of safe operation of distribution network with high-permeability and renewable energy

A renewable energy and safe operation technology, applied in the direction of single network parallel feed arrangement, AC network with the same frequency from different sources, electrical components, etc., to avoid unreasonable or impossible reconfiguration and ensure safe operation Effect

Active Publication Date: 2017-11-17
TIANJIN UNIV
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Problems solved by technology

[0005] In view of the above problems, the purpose of the present invention is to provide a dynamic reconfiguration method for the safe operation of distribution network under the condition of high-penetration renewable energy, so as to solve the problems that may occur in the operation of distribution network under the condition of access to a large number of renewable energy in the future. Ensure the safe operation of the distribution network

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  • Dynamic reconstruction method of safe operation of distribution network with high-permeability and renewable energy
  • Dynamic reconstruction method of safe operation of distribution network with high-permeability and renewable energy
  • Dynamic reconstruction method of safe operation of distribution network with high-permeability and renewable energy

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Embodiment Construction

[0043] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0044] like figure 1 As shown, the dynamic reconstruction method for the safe operation of distribution network under the condition of high permeability provided by the present invention includes the following steps carried out in order:

[0045] 1) Safety assessment of distribution network;

[0046]Based on the 24-hour point load demand prediction results of the distribution network to be studied, based on the initial operating network structure, according to the load and power output from time point t to time point t+1 (t=1, 2, 3...24) , using the continuous power flow algorithm to calculate the voltage curves of all nodes from time point t to time point t+1 respectively, once the voltage curve of any node between time point t and time point t+1 exceeds the following safe operation constraints , then it is judged that the time point i viol...

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Abstract

The invention relates to dynamic reconstruction method of safe operation of distribution network with high-permeability and renewable energy. The method comprises: step one, carrying out safety assessment of a distribution network; step two, carrying out first-stage reconstruction; step three, carrying out second-stage reconstruction; step four, carrying out time frame fusion; and step five, generating a final distribution network reconstruction plan. The method comprises the following beneficial effects: with consideration of the future distribution network development situation, the high permeability is taken into consideration in distribution network reconstruction and problems caused by access to the distribution network by lots of distributed power supplies in future are analyzed; and thus a reconstruction method is designed, so that the safety operation of the distribution network is guaranteed. The time frame division is combined with the reconstruction action, so that time frame division and the reconstruction action are carried out simultaneously and thus a phenomenon that reconstruction is not reasonable or reconstruction can not be carried out because of the unscientific time frame division result is avoided.

Description

technical field [0001] The invention belongs to the technical field of urban distribution network operation optimization, in particular to a dynamic reconstruction method for safe operation of distribution network under the condition of high-permeability renewable energy. Background technique [0002] With the improvement of clean and environmentally friendly renewable energy power generation technology, the penetration rate of renewable energy power generation (distributed power generation) in the distribution network is gradually increasing. High penetration rate is defined as the average electricity generation exceeds 30% of the electricity load per period. The safe operation of the distribution network under high penetration rate means that in this operation scenario, the operation of the distribution network can meet the static constraints (node ​​voltage constraints, branch current constraints, etc.). However, the intermittence and randomness of distributed power gene...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J3/38H02J3/06G06Q10/04G06Q50/06
CPCG06Q10/04G06Q50/06H02J3/00H02J3/06H02J3/382H02J2203/20Y04S10/50
Inventor 罗凤章高爽杨文涛魏炜
Owner TIANJIN UNIV
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