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A Method for Automatic Topology Identification of Low-voltage Platform Area

An automatic identification and topology technology, applied in the measurement of current/voltage, the reduction of multi-phase network asymmetry, instruments, etc., can solve the problems of difficult identification, difficult detection of heavy-duty distorted signals, etc., to achieve high accuracy and practicality. value, the effect of reducing imbalance

Active Publication Date: 2021-11-12
SHIJIAZHUANG KE ELECTRIC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Difficult to detect in heavily loaded distorted signals
There is also a topology recognition method based on the similarity of big data analysis, which is also difficult to identify for light load conditions

Method used

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  • A Method for Automatic Topology Identification of Low-voltage Platform Area
  • A Method for Automatic Topology Identification of Low-voltage Platform Area
  • A Method for Automatic Topology Identification of Low-voltage Platform Area

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Embodiment Construction

[0010] See attached figure 1 , the present invention provides a method for automatic identification of topology in a low-voltage station area, based on a transformer with a distribution transformer terminal installed on the meter box, branch box, and outlet end, there are devices for changing The phase sequence switching device of the three-phase phase sequence is equipped with a branch monitoring unit for detecting the three-phase phase sequence in the branch box and the meter box. Among them, the branch box can be designed with multiple levels.

[0011] Method of the present invention comprises the following steps:

[0012] Step A, Household Transformer Relationship Identification: The distribution transformer terminal controls the matching phase sequence switching device to perform phase change and inquires the recognition results of phase change events of all branch monitoring units, and then marks all equipment that recognizes phase change events as equipment in the stat...

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Abstract

The invention discloses an automatic topological identification method for a low-voltage station area, which belongs to the field of power distribution automation in a power system, and includes three steps of household transformer relationship identification, topological branch identification, and topological hierarchical relationship calculation. The beneficial effects of the present invention are: 1. Based on the principle of three-phase commutation, the topology identification of the low-voltage distribution network station area is realized with high accuracy; 2. It does not affect the power consumption of users, and has a certain inhibitory effect on the three-phase unbalance phenomenon in the station area. When the three phases are unbalanced, the transformation of the phase sequence will exchange the heavy load phase and the non-heavy load phase, thereby reducing the unbalance between the three phases. The phase sequence transformation of the multi-level distribution box can better reduce the The three-phase unbalance of distribution boxes at all levels in the district has good practical value.

Description

technical field [0001] The invention belongs to the field of power distribution automation in electric power systems, is applied to distribution station area monitoring, and particularly relates to an automatic identification method for low-voltage station area topology based on three-phase commutation events. Background technique [0002] With the rapid development of my country's modernization process, the number of power users has increased significantly, and the power distribution system has become more and more perfect. In order to improve the reliability of power supply, it is of great significance to realize the intelligent management of power consumption in distribution network. In the distribution network, the premise of realizing the intelligent monitoring of station area distribution is that the topology structure of the station area is known. However, in the daily operation and maintenance management of power distribution, there is often the problem that the conn...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/26H02J13/00G01R19/175
CPCH02J3/26H02J13/00002G01R19/175Y02E40/50
Inventor 李江峰王强王鹏刘海涛吉帅虎王志江李春海崔振伟郭殿聪袁琳琳李世敏杨营曹晓贝张彦红张江丽
Owner SHIJIAZHUANG KE ELECTRIC
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