Research the Instrument of Karl Fischer Titration How to Detect the Moisture Content from Transformer Insulating Oil
Ming-Jong Lin *
Southern Taiwan University of Science and Technology, No. 13, Ln. 388, Sec. 1, Anzhong Rd., Annan Dist., Tainan City 709, Taiwan, Republic of China.
*Author to whom correspondence should be addressed.
Abstract
This article focuses on the monitoring and control of the moisture content from the transformer insulating oil. When its moisture content exceeds the standard value, it will endanger the normal operation of the equipment and cause accidents. Research on how the moisture content penetrates into the insulating oil of the transformer. How to diagnose the moisture content is an important issue under the premise of affecting hidden worries about the quality of power supply？ Currently, there are three types of moisture content detecting: "visual", "calcium carbide method" and "liquid chromatography." This article will use the most accurate and effective "liquid chromatography", also referred to as "Karl Fischer coulometric titration" or "ASTM D6304-20", as the vertical axis and "monitoring and control" as the horizontal axis to analyze and discuss the moisture of generation in transformer insulating oil and detection methods to compose throughout them for an article. When the detecting oil sample has measured without contamination under normal procedures which has 30 to 35 ppm of moisture content, it is judged as a passing standard by ASTM D6304-20. If it exceeds standard level, the transformer equipment must be shut down for being deal with. To pay more attention on the item for detection of moisture content in insulating oil, so be doing that the transformer - related electrical accident failure which will be what It will not happen again similar accidents caused by moisture content. In addition to being a reference for maintenance technicians of substation equipment, this article can effectively monitor the moisture content inside the transformer to ensure the safe operation of the equipment.
Detection Methods: the principle of the Karl Fisher Titration detection method is to employ the reaction of chemical between iodine (I2) and sulfur dioxide (SO2), and then absorb all the water (2H2O) from the insulating oil, while the chemical reaction produces sulfuric acid (H2SO4) and hydrogen iodide (2HI), so by doing to diagnose the moisture content in parts per million (ppm) of the oil sample.
Detection Purpose: To explain "the Instrument of Karl Fischer Titration How to Detect the Moisture Content from Transformer Insulating Oil.”
Detection Effectiveness: The most accurate and effective method of liquid chromatography, also known as Karl Fisher Titration which is employed for power companies.
Keywords: Transformer insulating oil, power transformers, ASTM D6304-20, moisture content
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References
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