Low-voltage transformer area topology automatic identification method

A technology of automatic identification and low-voltage station area, applied in the direction of measuring current/voltage, reducing multi-phase network asymmetry, measuring devices, etc., can solve the problems of heavy-duty distortion signals that are difficult to detect and identify, and achieve good practical value , high accuracy, and reduce the effect of unbalance

Active Publication Date: 2020-10-30
SHIJIAZHUANG KE ELECTRIC
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AI Technical Summary

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

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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 a low-voltage transformer area topology automatic identification method, which belongs to the field of power distribution automation in a power system, and comprises three steps of user-transformer relationship identification, topology branch identification and topology hierarchical relationship calculation. The beneficial effects of the invention are that the topological recognition of the low-voltage power distribution network transformer area is achieved based on the three-phase commutation principle, and accuracy is high; 2, the power utilization of users is not influenced, and a certain inhibition effect is achieved on the three-phase imbalance phenomenon of the transformer area; when the three phases are unbalanced, the conversion of the phase sequence enablesthe heavy-load phase and the non-heavy-load phase to be mutually converted, thereby reducing the degree of unbalance among the three phases, and the phase sequence conversion of the multi-stage distribution box can better reduce the degree of unbalance among the three phases of the distribution box at each stage in a transformer area, thereby having a very 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 Applications(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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