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Transformer state monitoring device and method based on strain characteristics of explosion-proof material

A technology of condition monitoring device and explosion-proof material, applied in transformer testing and other directions, can solve problems such as economic losses, and achieve the effects of reducing insulating oil pressure, reducing the probability of malfunction, and reliable analysis and evaluation.

Pending Publication Date: 2022-05-17
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] In recent years, transformer failure accidents have occurred frequently, accompanied by complex characteristics such as oil pressure rise, oil tank deformation, oil flow surge, etc., causing huge economic losses

Method used

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  • Transformer state monitoring device and method based on strain characteristics of explosion-proof material
  • Transformer state monitoring device and method based on strain characteristics of explosion-proof material
  • Transformer state monitoring device and method based on strain characteristics of explosion-proof material

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Embodiment Construction

[0038] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0039] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. The preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that a thorough and complete understanding of the present disclosure is provided.

[0040] In addition, an element in the present invention is said to be "fixed" or "disposed on" another element, and it may be directly on another element or an intervening element may also exist. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The...

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Abstract

The invention discloses a transformer state monitoring device and method based on strain characteristics of an explosion-proof material. The transformer state monitoring device comprises a strain monitoring unit, an alarm unit, an oil pressure starting unit, a current starting unit and a porous metal explosion-proof unit capable of absorbing energy, the oil pressure starting unit, the current starting unit and the porous metal explosion-proof unit are all connected with the strain monitoring unit, and the strain monitoring unit is connected with the alarm unit. According to the invention, the strain characteristic quantity of the porous metal explosion-proof membrane in the converter transformer is quickly sensed by using the strain sensor arranged between the porous metal layers, and the high-temperature, oil-stain and strong-electromagnetism complex environment in the converter transformer is met in the aspects of precision and application range. The device is independent of a power system, does not generate harmonic interference in the operation and use process, and does not affect the operation of the power system.

Description

technical field [0001] The invention belongs to the technical field of non-electrical protection of power system transformers, and in particular relates to a transformer state monitoring device and method based on strain characteristics of explosion-proof materials. Background technique [0002] The converter transformer is an important equipment in the power system, and its stable operation is an important prerequisite to ensure the reliable transportation, flexible distribution and safe use of electric energy in the power system. The transformer is equipped with electrical quantity protections such as differential protection, current quick-break protection, overcurrent protection, overload protection, zero-sequence current protection, over-excitation protection, and non-electrical quantity protection such as gas protection. However, the relay protection is to identify the fault through the protection criterion after the fault occurs, and send a tripping action signal to qu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/62
CPCG01R31/62
Inventor 闫晨光罗博文张芃朱述友周贤
Owner XI AN JIAOTONG UNIV
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