Dissolved Gas Analysis Equipment for Online Monitoring of Transformer Oil: A Review

被引：93
|
作者：
Bustamante, Sergio [1 ]
Manana, Mario [1 ]
Arroyo, Alberto [1 ]
Castro, Pablo [1 ]
Laso, Alberto [1 ]
Martinez, Raquel [1 ]
机构：
[1] Univ Cantabria, Sch Ind Engn, Ave Castros S-N, Cantabria 39005, Spain
来源：
SENSORS | 2019年 / 19卷 / 19期
关键词：
dissolved gas analysis; power transformer; transformer maintenance; transformer oil; POWER TRANSFORMERS; HEALTH INDEX; VALUES;
D O I：
10.3390/s19194057
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Power transformers are the most important assets of electric power substations. The reliability in the operation of electric power transmission and distribution is due to the correct operation and maintenance of power transformers. The parameters that are most used to assess the health status of power transformers are dissolved gas analysis (DGA), oil quality analysis (OQA) and content of furfuraldehydes (FFA) in oil. The parameter that currently allows for simple online monitoring in an energized transformer is the DGA. Although most of the DGA continues to be done in the laboratory, the trend is online DGA monitoring, since it allows for detection or diagnosis of the faults throughout the life of the power transformers. This study presents a review of the main DGA monitors, single- or multi-gas, their most important specifications, accuracy, repeatability and measurement range, the types of installation, valve or closed loop, and number of analogue inputs and outputs. This review shows the differences between the main existing DGA monitors and aims to help in the selection of the most suitable DGA monitoring approach according to the needs of each case.
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收藏
页数：21
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