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Transformer state monitoring and protecting integrated device and method based on strain characteristics

A strain monitoring and transformer technology, applied in the field of transformer state monitoring and protection integrated devices based on strain characteristics, can solve problems such as transformer accidents, economic losses, casualties, etc., and achieves reducing the pressure of insulating oil and increasing the pressure bearing limit. , Improve the effect of explosion-proof performance

Pending Publication Date: 2022-05-10
XI AN JIAOTONG UNIV
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  • Description
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Problems solved by technology

However, with the development of the power system, on the one hand, gas protection is difficult to meet the requirements of the stable operation of the modern power system due to its old structure and empirical threshold.
In recent years, transformers equipped with gas protection still have frequent accidents, causing huge economic losses
On the other hand, although the electrical protection can operate correctly and cut off the transformer fault, due to the inherent time limit of fault identification and removal, the high-energy arc fault has developed into an accident within this time limit, causing equipment loss and casualties

Method used

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  • Transformer state monitoring and protecting integrated device and method based on strain characteristics
  • Transformer state monitoring and protecting integrated device and method based on strain characteristics
  • Transformer state monitoring and protecting integrated device and method based on strain characteristics

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Embodiment Construction

[0030] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0031] 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. 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. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0032] 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 ...

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Abstract

The transformer state monitoring and protecting integrated device based on the strain characteristics comprises a porous metal explosion-proof unit, an oil pressure starting unit, a strain monitoring unit, an alarm unit and a tripping unit, the oil pressure starting unit is connected with the strain monitoring unit, and the tripping unit, the alarm unit and the porous metal explosion-proof unit are all connected with the strain monitoring unit. According to the invention, the oil pressure starting unit and the strain monitoring unit are utilized to judge whether the internal insulation oil pressure characteristic quantity of the transformer and the strain characteristic quantity of the porous material reach the threshold value or not, so that the state change of the transformer can be quickly and reliably analyzed and evaluated, and the transformer fault can be discriminated and removed.

Description

technical field [0001] The invention belongs to the technical field of power system transformer non-electricity protection, and in particular relates to an integrated device and method for transformer state monitoring and protection based on strain characteristics. Background technique [0002] The 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. Non-electricity protection makes up for the deficiency of electric quantity protection by virtue of its sensitivity advantage, and is widely used in power system....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/62
CPCG01R31/62
Inventor 闫晨光王威翔郭家旭朱述友周贤
Owner XI AN JIAOTONG UNIV
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