Online monitoring device and method for power transformer on the basis of transient oil flow characteristics

A technology for power transformers and monitoring devices, applied to measuring devices, fluid velocity measurement, instruments, etc., can solve the problems of high voltage level, economic loss, high cost, etc., and achieve the effects of measurement, real-time processing, and simple composition

Pending Publication Date: 2019-07-16
BEIJING ZHONGRUIHE ELECTRICAL +1
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  • Application Information

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Problems solved by technology

Especially the large power transformer installed at the hub of the system, because of its high voltage level, large capacity, complex structure, and high cost, once a failure occurs, it will have a serious impact on the power supply reliability and operation stability of the power system. Damage is bound to cause huge economic losses

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  • Online monitoring device and method for power transformer on the basis of transient oil flow characteristics
  • Online monitoring device and method for power transformer on the basis of transient oil flow characteristics
  • Online monitoring device and method for power transformer on the basis of transient oil flow characteristics

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Embodiment Construction

[0051] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0052] see figure 1 , an online monitoring device for power transformers based on transient oil flow characteristics, including: a transient oil flow characteristic measurement module, a signal conditioning and acquisition module, a digital processing and analysis module, a data storage module, a man-machine dialogue module, and a data communication interface module . The transient oil flow characteristic measurement module is connected to the signal conditioning and acquisition module, the signal conditioning and acquisition module is connected to the digital processing and analysis module, and the data storage module, man-machine dialogue module and data communication interface module are all connected to the digital processing and analysis module;

[0053] The transient oil flow characteristic measurement module is composed of an externally bundled high-frequency...

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Abstract

The invention discloses an online monitoring device and method for a power transformer on the basis of transient oil flow characteristics. The online monitoring device comprises a transient oil flow characteristic quantity measurement module, a signal conditioning and collecting module and a digital processing and analyzing module, wherein the transient oil flow characteristic quantity measurementmodule and the signal conditioning and collecting module are connected, and the signal conditioning and collecting module and the digital processing and analyzing module are connected. By use of thedevice, transient oil flow characteristic information in a transformer oil conservator connecting pipe is obtained in real time, and an action oil flow value which represents oil flow flowing intensity is calculated and is compared with a preset overcurrent threshold value and a quasi-overcurrent threshold value to judge whether the tested transformer is subjected to exceptional overcurrent or not. The device is independent of a power network and has the advantages of being simple in composition, easy in implementation, reliable, accurate and the like.

Description

technical field [0001] The invention belongs to the field of power systems, and relates to a power transformer online monitoring device and method based on transient oil flow characteristics, which are used for measuring, recording, and analyzing the transient oil flow characteristics of oil-immersed power transformers, and evaluating the operating state of the transformer . Background technique [0002] As a key main power equipment, the transformer plays a pivotal role in the power system, and its stable operation is an important prerequisite to ensure the reliable transmission, flexible distribution and safe use of electric energy in the entire power system. Especially for large power transformers installed at the hub of the system, because of their high voltage level, large capacity, complex structure, and high cost, once a failure occurs, it will have a serious impact on the power supply reliability and operation stability of the power system. Damage will inevitably ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01P5/24
CPCG01P5/24
Inventor 闫晨光朱述友周贤罗宝锋张保会高琰徐雅周贤武
Owner BEIJING ZHONGRUIHE ELECTRICAL
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