Method for hierarchical assessment of chromatographic detection devices in power grid system

Abstract

The invention belongs to the technical field of electric power, and concretely relates to a method for hierarchical assessment of chromatographic detection devices in a power grid system. The method comprises the following steps: 1, sending desktop chromatographs to a metering department, and carrying out metering detection on the desktop chromatographs; 2, carrying out chromatograph combined comparative test detection on desktop chromatographs passing the metering detection; 3, applying the chromatographs passing the combined comparative test detection to an apparatus for online monitoring of dissolved gases in transformer oil; and 4, carrying out inspection and acceptance on the apparatus for online monitoring of dissolved gases in transformer oil in a chromatogram verification laboratory, and installing the qualified apparatus in a transformer station in order to supervise the health status of a transformer. The method solves the problem of unable tracing of the apparatus for online monitoring of dissolved gases in transformer oil, realizes the practical use of the online monitoring apparatus after detection data is accurate and stable, and improves the credibility of the detection data when the online monitoring apparatus supervises the running health status of the transformer in real time.

Description

technical field [0001] The invention belongs to the technical field of electric power, and in particular relates to a hierarchical evaluation method for a chromatographic detection device in a power grid system. Background technique [0002] Transformer is one of the important electrical equipment in power system, once it breaks down, it will bring serious consequences. It is one of the effective means to ensure the safe and stable operation of transformers to monitor the health and operation status of transformers by gas chromatography analysis method to analyze the components of dissolved gases in transformer oil. In recent years, in order to improve the real-time monitoring level and fault warning ability of large transformers, the deployment rate of online monitoring devices for dissolved gas in transformer oil in the State Grid Corporation of China system has shown a rapid growth trend. However, as an emerging technology, the on-line monitoring technology and equipment...

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Problems solved by technology

[0003] The technical problem to be solved by the patent of the present invention is to propose a hierarchical evaluation method for chromatographic detection devices in the power grid system. This method uses laboratory chromatographs for joint comparison tests, desktop chromatographs, and online monitoring of dissolved gases in transformer oil. The three devices form a hierarchical value transfer, which solves the problem that the online monitoring device for dissolved gas in transformer oil cannot be traced back to the source. When running the health status, check the reliability of the data

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