Multiparameter sensed transformer optical fiber sensor installation method

Abstract

The invention discloses a multiparameter sensed transformer optical fiber sensor installation method. The method comprises installation methods of a winding temperature-measuring optical fiber sensor,a winding press-boots dynamic pressure optical fiber sensor, a vibration optical fiber sensor and a local discharge optical fiber sensor, wherein the winding temperature-measuring optical fiber sensor comprises a single-point type temperature-measuring optical fiber and a quasi-distributed optical fiber grating string, the single-point type temperature-measuring optical fiber is buried in a cushion block between wire cake and used for measuring hotspot temperature of the winding, and the distributed optical fiber grating string is buried in a winding outer stay and used for measuring temperature field intensity distribution of the winding. The installation method disclosed by the invention provides a solution scheme for the comprehensive sensing of the transformer state and the online andreal-time monitoring on the multiple parameters of internal temperature, pressure, vibration and local discharge.

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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