A method for judging the relationship between electricity users

A technology of relationship and current, applied in the field of power grid, can solve the problems of difficult and impossible to judge the phase change relationship of power consumption points, and achieve the effect of avoiding strong signal and easy string connection, improving power supply reliability, and direct phase change judgment

Active Publication Date: 2021-05-25
HEFEI POWER SUPPLY COMPANY OF STATE GRID ANHUI ELECTRIC POWER
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Problems solved by technology

[0008] A method for judging the phase change relationship of the power consumption point proposed by the invention can solve the technical problem that the phase change relationship of the current power consumption point is difficult or impossible to judge

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  • A method for judging the relationship between electricity users
  • A method for judging the relationship between electricity users

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Embodiment Construction

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments.

[0024] The relationship between households and stations is actually the topological relationship of the low-voltage distribution network, which is the physical connection of how many households are supplied by a transformer. Electricity users and transformers are physically connected by wires. Existing station area identification / census equipment uses carrier wave or zero-sequence current to make judgments. In actual use, some difficult electricity points are misjudged and misjudged The rate is higher. Specifically, it is reflected in the following...

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Abstract

The method for judging the relationship between electricity users and users of the invention can solve the technical problem that it is difficult or impossible to judge the phase-change relationship of the existing electricity users. The method includes the following steps: S100, load a load with rated power at the power consumption point where the phase change relationship needs to be judged, and monitor the current before and after loading the load phase; S200, monitor the corresponding current on the power supply side before and after loading the load on the phase line of the low-voltage outlet terminal of the transformer ;S300, synchronously contact the load side and the power supply side, and respectively observe the change of the corresponding phase line current on the load side and the power supply side when switching the rated load; S400, according to whether the difference between the load side and the power supply side current is equal Determine the phase change relationship of electricity consumption. The present invention is based on the synchronism of the current, adding the load power / current of the rated value on the phase line of the measured power point, measuring the current at the load side and the low-voltage outlet end of the transformer, that is, the power supply end, and observing the difference before and after the current according to the switching load Whether they are consistent to determine the transformer to which the phase line belongs.

Description

technical field [0001] The invention relates to the technical field of power grids, in particular to a method for judging the relationship between electricity consumers. Background technique [0002] Accurately judging the subordination relationship between distribution transformers and users has always been a difficult problem for power supply companies, especially in urban areas. Due to the needs of urban development, normal work such as road reconstruction, demolition, and lighting, as well as the fact that most of them are buried cables, the low-voltage power supply network changes rapidly, and line adjustments and connections are more common. As a result, the affiliation relationship between the transformer and the user is very complicated, which causes difficulties in line loss, emergency repair, new installation and capacity increase, and also affects the reliability of power supply. [0003] The work of power supply enterprises, such as line loss, rush repair, new i...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00
Inventor 陶勇李文芳卢汪节乔慧周全刘金友徐晃张旭
Owner HEFEI POWER SUPPLY COMPANY OF STATE GRID ANHUI ELECTRIC POWER
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