Comparative analysis of risks which are accompanied by the use of typical and boundary gases concentrations for the diagnostics of high voltage transformers

Q3 Earth and Planetary Sciences

Energetika Pub Date : 2018-10-29 DOI:10.6001/ENERGETIKA.V64I3.3806

O. Shutenko, O. Proskurnia, V. Abramov

{"title":"Comparative analysis of risks which are accompanied by the use of typical and boundary gases concentrations for the diagnostics of high voltage transformers","authors":"O. Shutenko, O. Proskurnia, V. Abramov","doi":"10.6001/ENERGETIKA.V64I3.3806","DOIUrl":null,"url":null,"abstract":"The aim of the scientific research provided in the article is to increase the operational reliability of high-voltage power transformers by reducing the possible risks when diagnosing high-voltage equipment based on the analysis of gases dissolved in oil. We described the method for determining the boundary (typical) gas concentrations by the integral function method, which is recommended by some existing standards, and the author’s method for determining the boundary concentrations of gases ensuring a minimum of possible economic damage in case of taking erroneous decisions. The analysis of boundary concentrations of gases obtained by the method of integral functions and the method of minimum risk showed that boundary values differ significantly for the same data, depending on the method of determination. To determine the reliability of decision-making we used a comparative analysis of risk values that may arise while making a diagnosis of high-voltage transformers based on the analysis of gases dissolved in oil, the boundary values of gas concentrations obtained by the integral function method and the minimum risk method, as well as the boundary values of gas concentrations regulated by known international and national standards were used. The study has revealed that the use of typical values of gas concentrations obtained by integrated distribution functions is accompanied by one of the highest risk values. The lowest risk value is provided by the boundary concentrations obtained by the minimum risk method. The method proposed for determining the boundary values of gas concentrations, taking into account the influence of the most relevant factors, allows significantly lower the values of possible risks and consequently can increase the operational reliability of high-voltage transformers, especially those that are used outside the normative service life.","PeriodicalId":35639,"journal":{"name":"Energetika","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2018-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Energetika","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.6001/ENERGETIKA.V64I3.3806","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"Earth and Planetary Sciences","Score":null,"Total":0}

引用次数: 1

Abstract

The aim of the scientific research provided in the article is to increase the operational reliability of high-voltage power transformers by reducing the possible risks when diagnosing high-voltage equipment based on the analysis of gases dissolved in oil. We described the method for determining the boundary (typical) gas concentrations by the integral function method, which is recommended by some existing standards, and the author’s method for determining the boundary concentrations of gases ensuring a minimum of possible economic damage in case of taking erroneous decisions. The analysis of boundary concentrations of gases obtained by the method of integral functions and the method of minimum risk showed that boundary values differ significantly for the same data, depending on the method of determination. To determine the reliability of decision-making we used a comparative analysis of risk values that may arise while making a diagnosis of high-voltage transformers based on the analysis of gases dissolved in oil, the boundary values of gas concentrations obtained by the integral function method and the minimum risk method, as well as the boundary values of gas concentrations regulated by known international and national standards were used. The study has revealed that the use of typical values of gas concentrations obtained by integrated distribution functions is accompanied by one of the highest risk values. The lowest risk value is provided by the boundary concentrations obtained by the minimum risk method. The method proposed for determining the boundary values of gas concentrations, taking into account the influence of the most relevant factors, allows significantly lower the values of possible risks and consequently can increase the operational reliability of high-voltage transformers, especially those that are used outside the normative service life.

查看原文本刊更多论文

高压变压器诊断中使用典型气体浓度和边界气体浓度所伴随的风险的比较分析

本文提供的科学研究的目的是通过分析油中溶解的气体来降低诊断高压设备时可能存在的风险，从而提高高压电力变压器的运行可靠性。我们描述了一些现有标准推荐的通过积分函数法确定边界（典型）气体浓度的方法，以及作者确定气体边界浓度的方法——确保在做出错误决策时尽可能减少经济损失。通过积分函数法和最小风险法获得的气体边界浓度分析表明，根据确定方法的不同，相同数据的边界值差异很大。为了确定决策的可靠性，我们使用了对高压变压器诊断时可能出现的风险值的比较分析，该分析基于对溶解在油中的气体的分析、通过积分函数法和最小风险法获得的气体浓度边界值，以及使用由已知的国际和国家标准调节的气体浓度的边界值。研究表明，使用通过综合分布函数获得的气体浓度的典型值伴随着最高风险值之一。最低风险值由最小风险法获得的边界浓度提供。考虑到最相关因素的影响，提出的确定气体浓度边界值的方法可以显著降低可能的风险值，从而提高高压变压器的运行可靠性，尤其是那些在规范使用寿命之外使用的高压变压器。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Energetika Energy-Energy Engineering and Power Technology

CiteScore

2.10

自引率

0.00%

发文量

期刊介绍： The journal publishes original scientific, review and problem papers in the following fields: power engineering economics, modelling of energy systems, their management and optimization, target systems, environmental impacts of power engineering objects, nuclear energetics, its safety, radioactive waste disposal, renewable power sources, power engineering metrology, thermal physics, aerohydrodynamics, plasma technologies, combustion processes, hydrogen energetics, material studies and technologies, hydrology, hydroenergetics. All papers are reviewed. Information is presented on the defended theses, various conferences, reviews, etc.