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A method of on-line monitoring of transformer status based on ofdm carrier signal

A carrier signal, transformer technology, applied in the field of transformers, can solve the problem of inability to realize online detection and so on

Active Publication Date: 2022-03-25
SPL ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method is generally considered to be an effective transformer fault detection method, it can only be used for maintenance after the transformer is shut down, and cannot realize online detection.

Method used

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  • A method of on-line monitoring of transformer status based on ofdm carrier signal
  • A method of on-line monitoring of transformer status based on ofdm carrier signal
  • A method of on-line monitoring of transformer status based on ofdm carrier signal

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Embodiment Construction

[0052] The technical scheme of the present invention is realized on the basis of the hardware of an online monitoring system for transformer operation status based on OFDM carrier signal, wherein the online monitoring system for transformer operation status based on OFDM carrier signal includes: a concentrator installed on the secondary side of the transformer; Its carrier communication module CCO, the primary side of the transformer is installed with three-phase carrier communication equipment after the voltage transformer PT and current transformer CT, the three-phase carrier communication equipment includes the primary side three-phase carrier communication module STA-P3H and power supply module;

[0053] The on-line monitoring system for transformer operation status based on OFDM carrier signal, wherein: a concentrator and its carrier communication module CCO are installed on the secondary side of the transformer, and the primary side of the transformer is installed after a ...

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Abstract

The present invention is an on-line monitoring system and method for transformer operating status based on OFDM carrier signals. The concentrator and its carrier communication module CCO installed on the secondary side of the distribution transformer are installed after the primary side of the distribution transformer passes through a voltage transformer and a current transformer. The three-phase carrier communication equipment includes the primary side three-phase carrier communication module STA‑P3H and the power supply module, and uses the OFDM carrier signal to realize the measurement, recording, tracking and monitoring of the online frequency characteristics of the primary and secondary sides of the transformer. In this way, transformer defects can be found in time without the transformer having to be shut down, and fault warning can be provided.

Description

technical field [0001] The invention relates to the technical field of transformers, in particular to an on-line monitoring method for transformer operation states based on OFDM carrier signals. Background technique [0002] The normal operation of the transformer is the basic guarantee for the safe and reliable power consumption of power users. Distribution transformers will have faults such as coil deformation and insulation damage due to surges, lightning strikes, and inherent defects. Continuous heating of the fault point will cause the transformer to catch fire and explode, resulting in vicious accidents. Power companies usually conduct power outage inspections on transformer operation once or twice a year, but this method of outage inspection not only affects normal power consumption, but also makes it difficult to find hidden problems in time. For this reason, distribution transformers need online monitoring equipment to track and judge the operating status of the tr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B3/54G01R31/00
CPCG01R31/00
Inventor 庞浩
Owner SPL ELECTRONICS TECH CO LTD
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