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Method and device for monitoring gas in transformer oil on line

A transformer oil and gas technology, applied in the field of substation status monitoring, can solve problems such as difficulty in obtaining detection results, ignoring the uncertainty of oil-gas separation, and poor stability, so as to reduce long-term poor stability, improve long-term stability, and improve detection The effect of accuracy

Inactive Publication Date: 2013-04-03
WUHAN NARI LIABILITY OF STATE GRID ELECTRIC POWER RES INST +1
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Problems solved by technology

This method uses the standard gas calibration method, ignoring the uncertainty and poor stability of oil and gas separation, and it is difficult to obtain good detection results

Method used

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  • Method and device for monitoring gas in transformer oil on line
  • Method and device for monitoring gas in transformer oil on line
  • Method and device for monitoring gas in transformer oil on line

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Embodiment Construction

[0035] The embodiments of the present invention are described in detail below: this embodiment is implemented under the premise of the technical solution of the present invention, and detailed implementation methods and specific algorithms are provided, but the protection scope of the present invention is not limited to the following embodiments .

[0036] Such as figure 1 As shown, this embodiment includes:

[0037]A detection part, a control collection module and a management analysis module, the detection part includes an oil-gas separation module, a carrier gas control module, an automatic correction module and a detection module, the control collection module includes a control unit and a collection conversion unit, the management analysis module The module includes a data management unit, a data analysis unit, a data correction unit, and a spectrum peak identification unit. The oil-gas separation module receives the input of the transformer oil sample, and after passing...

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Abstract

The invention relates to the technical field of substation state monitoring, in particular to a method and a device for monitoring gas in transformer oil on line. A standard oil sample is subjected to factory delivery calibration during delivery test, the delivery recording of a specified gas sensor is recorded, the peak height test and factory delivery recording of the standard gas are compared and corrected, and the characteristic drift of the gas sensor is corrected and reduced. The method has profound significance for improving the long-term stability of the gas in the transformer oil through the online monitoring system, guaranteeing the transformer safety and stabilizing the operation.

Description

technical field [0001] The invention relates to the technical field of substation state monitoring, in particular to a method and device for online monitoring of gas in transformer oil. Background technique [0002] In the power supply system, the gas online monitoring technology in transformer oil has been widely and effectively applied. The current online gas monitoring system in transformer oil mainly uses a single chromatographic column for gas separation, and then detects the gas through a semiconductor gas sensor. Its semiconductor gas sensor has the disadvantages of severe characteristic drift, low stability, and difficult selection. [0003] After searching the existing technology, it is found that the Chinese patent application number is CN200910054895.6, and the authorized publication number is CN101629934A, which records a "transformer oil chromatography on-line monitoring system". The multiplicative curve fitting algorithm completes the calibration curve and im...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/88
CPCG01N33/2841G01N2030/8854
Inventor 张杰谷山强周盛姚翔宇董勤
Owner WUHAN NARI LIABILITY OF STATE GRID ELECTRIC POWER RES INST
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