公开(公告)号：US20150355049A1

公开(公告)日：2015-12-10

申请号：US14761922

申请日：2014-01-20

Applicant: ALSTOM TECHNOLOGY LTD

Inventor： Farid AIT ABDELMALEK ,  Jean-Luc RAYON ,  Wilfrid WEIDMANN

IPC: G01M3/32 ,  G01N9/00 ,  G01F1/00 ,  H02B13/035 ,  H02B13/065

CPC classification number: G01M3/3272 ,  G01F1/00 ,  G01M3/002 ,  G01N9/00 ,  H01H33/563 ,  H02B13/035 ,  H02B13/0655

Abstract: A method of determining a leak rate of an insulating gas from a gas-insulated compartment of an electrical installation having a plurality of similar compartments, the method being characterized in that it comprises the steps of; periodically determining a gas density for each of the compartments; determining respective straight lines from series of gas densities for each of the compartments; comparing slopes of the determined lines with one another; detecting a leak if the result of a comparison for one of the slopes is greater than a threshold; and in the event of a leak being detected determining a leak rate for the compartment associated with the slope that lead to a leak being detected.

Abstract translation: 一种确定来自具有多个相似隔间的电气设备的气体绝缘隔室的绝缘气体泄漏率的方法，其特征在于包括以下步骤： 周期性地确定每个隔室的气体密度; 从每个隔室的一系列气体密度确定各自的直线; 将确定的线的斜率彼此进行比较; 如果一个斜率的比较结果大于阈值，则检测泄漏; 并且在检测到泄漏的情况下确定与检测到导致泄漏的斜率相关联的隔室的泄漏率。