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Low-voltage transformer area topology identification method

A low-voltage station area and identification method technology, applied in the field of distribution network identification, can solve problems such as cross-line, inaccurate identification, and instability, and achieve the effect of helping refined management

Active Publication Date: 2021-07-23
JIANGSU ELECTRIC POWER CO +1
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Problems solved by technology

However, this method has the problems of inaccurate identification and instability, and there will be cross-connection.

Method used

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  • Low-voltage transformer area topology identification method
  • Low-voltage transformer area topology identification method
  • Low-voltage transformer area topology identification method

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Embodiment 1

[0043]Embodiment 1: A low-voltage station area topology identification method based on improved correlation analysis. The method first uses the density-based clustering algorithm DBSCAN to classify the equipment into different groups as much as possible according to the voltage similarity of the equipment on the same phase feeder. phase line area (A, B, and C), and exclude equipment that does not belong to this area; secondly, based on the basic law of energy conservation, the input power of the upstream equipment is equal to the sum of the power of the downstream equipment, combined with the power Pearson correlation coefficient and residual The difference square and two factors jointly judge the connectivity between the upstream and downstream equipment; finally adjust the equipment connectivity to establish the optimal topology of the station area.

[0044] The topology identification method of the low-voltage station area specifically includes the following steps:

[0045]...

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Abstract

The invention relates to a low-voltage transformer area topology identification method, which comprises the following steps: classifying equipment into different phase line areas (A, B and C) by utilizing a density-based clustering algorithm DBSCAN according to the voltage similarity of the equipment on a same-phase feeder line, and excluding the equipment which does not belong to the transformer area; secondly, based on the basic law of energy conservation and the characteristic that the input power of the upstream equipment is equal to the sum of the power of the downstream equipment, judging the connectivity between the upstream equipment and the downstream equipment jointly by combining two factors including a power Pearson's correlation coefficient and a residual sum of squares; and finally, adjusting the connectivity of the equipment, and establishing an optimal transformer area topological structure. According to the invention, topology identification of the low-voltage transformer area can be accurately and efficiently realized, so that fine management of a power distribution network side is facilitated.

Description

technical field [0001] The invention belongs to the technical field of distribution network identification, and in particular relates to a topology identification method for low-voltage station areas based on improved correlation analysis. Background technique [0002] The smart grid is the biggest change and innovation in the world's power industry at the beginning of this century, and it also plays a role in restricting and promoting the construction of smart cities. At the same time, in order to solve the key problems in the development process of the smart grid, it is necessary to strengthen the refined management of the distribution network side. However, the structure of the low-voltage distribution network is complex, and there is a lack of technical means to detect and verify network topology anomalies. At the same time, manual on-site investigation is difficult and inefficient, resulting in poor data quality and untimely updates, which in turn makes the topological ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/06G06K9/62
CPCG06Q10/0639G06Q50/06G06F18/2321Y02E60/00
Inventor 马骏昶冒烨颖胡杨赵建张军杨启明吴俊兴叶忆黄政宇杨晓伟王冬瑞
Owner JIANGSU ELECTRIC POWER CO
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