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Low-voltage transformer area line impedance measuring method and system based on electric power dedicated edge computing chip

A technology of low-voltage station area and line impedance, which is applied in the direction of measuring resistance/reactance/impedance, measuring devices, measuring electrical variables, etc., can solve complex and computationally intensive problems, and achieve enhanced adaptability, fast output results, and measurement accuracy high effect

Pending Publication Date: 2021-11-05
WILLFAR INFORMATION TECH CO LTD +1
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Problems solved by technology

This method is more complicated, with a large amount of calculation, and it is necessary to know the front and rear voltage and current values ​​at the same time

Method used

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  • Low-voltage transformer area line impedance measuring method and system based on electric power dedicated edge computing chip
  • Low-voltage transformer area line impedance measuring method and system based on electric power dedicated edge computing chip
  • Low-voltage transformer area line impedance measuring method and system based on electric power dedicated edge computing chip

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Embodiment Construction

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0037] It should be understood that when used in this specification and the appended claims, the terms "comprising" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude one or Presence or addition of multiple other features, integers, steps, operations, elements, components and / or collections thereof.

[0038] It should also be further understood that the term "and...

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Abstract

The invention discloses a low-voltage transformer area line impedance measurement method and system based on a power dedicated edge computing chip. The method comprises the following steps of investigating parameters of a low-voltage transformer area transformer, and calculating internal resistance of the transformer; a certain node of the transformer area actively sending pulse current signals with two characteristic frequencies to the incoming line side of the transformer area; measuring a resonance voltage and a pulse current at the node; measuring a resonance voltage of the wire inlet side of the district; calculating the line impedance from the node to the incoming line side of the transformer area through a line impedance analysis algorithm; repeating steps to obtain line impedance from all nodes of the transformer area to the incoming line side of the transformer area; and receiving line impedance from all nodes to the incoming line side of the transformer area, and obtaining a line impedance diagram of the whole transformer area according to the topological position of each node. The system comprises an impedance measurement signal sending module and an impedance measurement signal identification module based on the electric power dedicated edge calculation chip. The method is simple in measurement process, does not depend on strict time synchronization, is high in measurement precision, is quick in result output, and occupies less resources.

Description

technical field [0001] The invention relates to the technical field of electric power intelligent distribution network, in particular to a method and system for measuring line impedance in a low-voltage station area based on an electric power-specific edge computing chip. Background technique [0002] As the end of the power grid, the low-voltage distribution network is directly facing the market and serving customers at the front end. It has the characteristics of large volume, wide distribution, complex power supply environment, and diverse needs. The 0.4kV power supply network is the "last mile" of power supply, which directly affects the quality of power consumption. Due to the diversity, time-varying and complex wiring structure of the connected loads in the 0.4kV power supply network, it has brought great difficulties to the rapid repair of faults by electric personnel. At the same time, it also has a strong impact on marketing big data collection and communication. ...

Claims

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Application Information

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IPC IPC(8): G01R27/02
CPCG01R27/02
Inventor 陈岗李鹏范律李俊习伟刘金龙姚浩陈军健
Owner WILLFAR INFORMATION TECH CO LTD
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