Research of On-line Monitoring of Moisture Content in Transformer Oil

2010 ◽  
Author(s):  
Qiang Fu ◽  
Zhi Li ◽  
Yongping Lin
Keyword(s):  
Moisture Content ◽  
Transformer Oil ◽  
On Line

Research on Monitoring of Moisture Content in Transformer Oil by Using Sensors

2013 ◽  
Vol 684 ◽  
pp. 486-490 ◽  
Author(s):  
Qiang Fu ◽  
Meng Jun Wang ◽  
Wei Su ◽  
Yi Hua Qian ◽  
Guo Hua Lu
Keyword(s):  
Moisture Content ◽  
Temperature Sensor ◽  
Humidity Sensor ◽  
Transformer Oil ◽  
Moisture Distribution ◽  
Characteristic Parameters ◽  
On Line ◽  
Variation Mechanism ◽  
Capacitive Humidity Sensor

The moisture distribution in the transformer and variation mechanism of moisture in oil is analyzed in this paper, and using relative saturation and temperature as characteristic parameters, a detail scheme of on-line monitoring moisture content in transformer oil is put forward. The polyimide-based capacitive humidity sensor and temperature sensor are employed in on-line monitoring moisture content in oil. Computer is utilized to sample and analyze the data that sensors send out. The experiment on test transformer confirms that the sensors can work reliably, and reflect the moisture content in transformer oil accurately. The method that the paper proposes can realize the purpose of on-line monitoring.

scholarly journals Research and Application of Standard Oil Dispensing System for Dissolved Gases in Transformer Oil

2021 ◽  
Vol 2125 (1) ◽  
pp. 012072
Author(s):  
Yanping Li ◽  
Yong Li
Keyword(s):  
Electrical Equipment ◽  
Transformer Oil ◽  
Work Skills ◽  
Dissolved Gas ◽  
On Line ◽  
Important Means ◽  
Grid Operators ◽  
Oil Gas ◽  
Internal Potential ◽  
Gas Component

Abstract Measuring the content of dissolved gas components in transformer insulating oil by gas chromatography is an important means to judge the internal potential faults of oil filled electrical equipment in the process of operation supervision. The necessary work skills of power grid operators include the ability to detect the content of dissolved gas in transformer oil and judge the operation state of transformer. This paper introduces a preparation method and equipment of transformer standard oil. It can quickly prepare standard oils with various gas component contents. The standard oil quantity value is accurate, the data stability period is greater than 90 days, and the uncertainty is less than 5%. The equipment can be used for training and evaluation of transformer oil gas chromatographic analysis practitioners and calibration of transformer oil on-line gas chromatograph.

Microwave On-Line Moisture Content Monitoring in Low-Hydrated Organic Materials

1980 ◽  
Vol 15 (4) ◽  
pp. 267-275 ◽  
Author(s):  
H. Kraszewski ◽  
S. Kuliński ◽  
J. Madziar ◽  
K. Zielkowski
Keyword(s):  
Moisture Content ◽  
Organic Materials ◽  
On Line

Microwave On-Line Moisture Content Monitoring in Low-Hydrated Organic Materials

1980 ◽  
Author(s):  
Stanislaw Kulinski ◽  
Kajetan Zielkowski ◽  
Jerzy Madziar ◽  
Andrzej Kraszewski
Keyword(s):  
Moisture Content ◽  
Organic Materials ◽  
On Line

scholarly journals Moisture content as an important integral parameter of transformer oil quality in power transformers of 10/0.4 kV substations

2019 ◽  
Vol 124 ◽  
pp. 05008
Author(s):  
V Trushkin ◽  
S Shlyupikov ◽  
G Eroshenko ◽  
M Levin ◽  
S Kifarak
Keyword(s):  
Moisture Content ◽  
Oil Quality ◽  
Transformer Oil ◽  
Power Transformers ◽  
Main Element ◽  
Integral Parameter ◽  
Information Analysis ◽  
Sample Test ◽  
Long Time ◽  
Transformer Insulation

The main element characterizing the transformer efficiency is the state of its isolation, and the first thing is operating oil, which can perform its functions for a long time with timely restoration of its properties. Transformer oil is the main dielectric being in contact with the external environment, interacting with solid insulation and carrying a large amount of diagnostic information. Analysis of the development of transformer insulation damage showed that the main catalyst for accelerating the aging process of the oil is the appearance of moisture in it. This effect is enhanced by oxygen, temperature, the catalytic action of metals, oxidation and other factors. To confirm the influence of moisture content in oil on the deterioration of its properties, a statistical analysis of the oil sample test protocols was carried out. The obtained data allowed us to determine the moisture content as an important integral parameter of oil quality. Recommendations are given on the inclusion of a moisture content parameter in a set of mandatory requirements, in particular, for 10/0.4 kV consumer transformer substations equipped with silica gel air dryers

Model for on-line moisture-content control during solid-state fermentation

2000 ◽  
Vol 72 (2) ◽  
pp. 231-243 ◽  
Author(s):  
Frank-Jan J.I. Nagel ◽  
Johannes Tramper ◽  
Marjolein S.N. Bakker ◽  
Arjen Rinzema
Keyword(s):  
Solid State ◽  
Moisture Content ◽  
Solid State Fermentation ◽  
On Line

Measurement and Control of Moisture in Wheat

1970 ◽  
Vol 3 (11) ◽  
pp. T181-T187 ◽  
Author(s):  
M. Brain
Keyword(s):  
Control System ◽  
Moisture Content ◽  
Automatic Control ◽  
Automatic Control System ◽  
Microwave Technique ◽  
Line Measurement ◽  
On Line ◽  
And Control ◽  
Measurement And Control ◽  
Consequent Improvement

A microwave technique for the continuous on-line measurement of moisture content in wheat is described together with an automatic control system based on these measurements. The results from a prototype installation are given and the consequent improvement of flour parameters are discussed.

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