Topology identification method of low-voltage power distribution network topology identification system

A low-voltage distribution network and identification system technology, applied in the direction of circuit devices, electrical components, etc., can solve problems such as low reliability of topology information, cross-phase copying, and crosstalk interference in the station area, so as to improve efficiency and have little impact , low cost effect

Inactive Publication Date: 2020-06-05
遵义贵华能源科技有限公司
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Problems solved by technology

But now there are mainly two problems in the following aspects, one is the crosstalk interference between the stations; the other is cross-phase copying
All of these make the reliability of the topological information of the original station area low

Method used

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Embodiment Construction

[0021] The features of the present invention and other relevant features are described in further detail below through the embodiments, so as to facilitate the understanding of those skilled in the art:

[0022] A topology identification method for a low-voltage distribution network topology identification system, the topology identification system includes a master station, a concentrator for setting at the beginning of the three-phase voltage power supply in each station area, and a concentrator for setting at each node in the station area The node information collector, the master station communicates with the concentrator through wireless communication or wired network, the concentrator communicates with the node information collector through power carrier communication, and the master station, concentrator, and node information collect Devices have identification information respectively, and the topology identification method includes the following steps:

[0023] Step 1...

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Abstract

The invention discloses a topology identification method of a low-voltage power distribution network topology identification system. A main station and a concentrator are in wireless communication orwired network communication, implementation is simple and convenient, the concentrator and the node information collector adopt power line carrier communication, and the concentrator and the node information collector which can communicate with each other are ensured to belong to the same transformer area, so that the comparison of voltage zero crossing point time in the same transformer area in the step 2 is facilitated, and the problem of confusion of data among different transformer areas is avoided. Besides, according to the topology identification method, the voltage zero-crossing time ofeach node is compared with the voltage zero-crossing time of an A-phase line, a B-phase line and a C-phase line in the same transformer area to identify an in-phase line node group; and the identification method is simple and easy, and is beneficial to determining that the nodes in the correlation comparison in the step 3 are the nodes connected to the same phase line, and is beneficial to improving the correlation comparison efficiency in the step 3.

Description

technical field [0001] The invention relates to a topology identification method of a low-voltage distribution network topology identification system. Background technique [0002] As an important part of the power distribution system, the low-voltage power distribution network is directly connected to a large number of residents, businesses and commercial customers. With the popularity of electric vehicles, charging equipment and grid-connected distributed generation, these have brought new challenges to the power quality, power supply reliability and economic operation of low-voltage distribution networks. In low-voltage distribution networks, missing or inaccurate network topology information is a concern. Accurate user-side phase and topology connection relationship are of great significance to the operation and maintenance management of distribution network. Typically, utilities record and manage network connectivity information for various distribution equipment and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J13/00
Inventor 蔡泽祥韩永霞胡凯强薛宏利黄勇唐超洋
Owner 遵义贵华能源科技有限公司
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