A multi-parameter sensing transformer optical fiber sensor installation and layout method

Abstract

The invention discloses a method for installing and arranging a multi-parameter sensing transformer optical fiber sensor. The method includes an installation and arranging method for a winding temperature measuring optical fiber sensor, a winding pressure shoe dynamic pressure optical fiber sensor, a vibrating optical fiber sensor, and a partial discharge optical fiber sensor. The fiber optic sensor for winding temperature measurement includes a single-point temperature-measuring fiber and a quasi-distributed fiber grating string. Buried in the outer brace of the winding, it is used to measure the temperature field strength distribution of the winding. The invention provides a solution for realizing the comprehensive perception of the transformer state, the online real-time monitoring of internal temperature, pressure, vibration and partial discharge multi-parameters.

Description

technical field [0001] The invention relates to the technical field of transformer monitoring, in particular to a multi-parameter sensing transformer optical fiber sensor installation and arrangement method. Background technique [0002] The power transformer is one of the most important electrical equipment in the power system, and maintaining its normal operation is the basic guarantee for the reliable power supply of the entire system. In recent years, with the gradual increase of transformer capacity and continuous improvement of voltage level, the failure rate and repair time of transformers are also increasing. The internal faults that affect the reliable operation of transformers mainly include insulation faults, overheating faults and mechanical faults. Partial discharges can be caused by reduced or deteriorated insulation. Overheating faults usually manifest as local overheating and temperature rise inside the transformer, and in severe cases, it will cause the de...

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Problems solved by technology

These faults may cause the transformer to fail to operate normally, so it is necessary to monitor the state of the transformer's internal insulation, machinery, overheating, etc.

[0003] The traditional regular power outage maintenance based on prevention cannot realize the real-time continuous monitoring of the transformer status. Excessive maintenance will also cause damage to the equipment and shorten the service life of the equipment.

In addition, most of the existing on-line monitoring technologies are single-parameter monitoring such as temperature or partial discharge. monitoring can no longer meet the operational reliability requirements of substation equipment

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