Natural ester insulating oil is widely used in the electric power field. Local companies have independent research and development capabilities.

Natural ester insulating oil, also known as plant insulating oil, is an insulating liquid extracted from natural oil plant seeds or other biological materials and used for transformers or similar electrical equipment. Natural ester insulating oil has the advantages of safety and environmental protection, high ignition point, easy degradation, and good moisture resistance. As an insulation and heat dissipation medium, it is widely used in the power field.

The main component of natural ester insulating oil is triglyceride fatty acid ester, which has good environmental compatibility and biodegradability. It is usually extracted from rapeseed oil, soybean oil, and tea seed oil. my country is a major agricultural country with abundant natural oil plant species and sufficient output. The advantages of raw materials lay the foundation for the development of the natural ester insulating oil industry. In recent years, my country’s manufacturing companies and related scientific research institutions have continued to increase their research and development efforts on waste grease as a raw material for natural ester insulating oil, which will bring broad market prospects for my country’s natural ester insulating oil.

According to the “2022-2027 China Natural Ester Insulating Oil Industry Market In-depth Research and Development Prospects Forecast Report released by the Industrial Research Center , after years of development, my country’s natural ester insulating oil has formed a complete industrial chain. At present, natural ester insulating oil is mainly used in the power field, and natural ester insulating oil transformers are its end products. Compared with conventional mineral oil transformers, natural ester insulating oil transformers have the advantages of long insulation life, safety and environmental protection, strong load capacity, and high operating temperature, and are representative products of green transformers. In October 2022, my country’s first new level 1 energy efficiency intelligent 110kV natural ester insulating oil power transformer was successfully developed by Baobian Electric. The rapid development of downstream industries will drive the continued growth of market demand for natural ester insulating oils.

The world’s leading natural ester insulating oil companies include American Cargill, American Copper, Swiss ABB, etc. Major players in my country’s natural ester insulating oil market include Guangzhou Guangrunshida Biotechnology Co., Ltd., Jiangsu Shuangjiang Energy Technology Co., Ltd., Guangdong Zhuoyuan New Materials Technology Co., Ltd., Wuhan Zedian New Materials Co., Ltd., etc.

The production of natural ester insulating oil requires processes such as esterification, alkali refining, decolorization, deodorization, and deacidification. The production technology of natural ester insulating oil in my country is relatively mature. Guangdong Zhuoyuan New Materials focuses on the research and development, production and sales of natural ester insulating oil, and produces RAPO natural ester insulating oil with independent intellectual property rights. This product is used in shield boring machines, distribution networks, hydropower stations, wind farms, photovoltaic power generation, etc. widely used in the field.

Industry analysts said that natural ester insulating oil has excellent performance and is expected to become a mainstream product of insulation materials. After years of experience accumulation, my country’s natural ester insulating oil production technology has matured, and product output and quality have been greatly improved. As an end product of natural ester insulating oil, natural ester insulating oil transformers have an increasingly strong market demand. As the application fields continue to expand, the development speed of my country’s natural ester insulating oil industry will further accelerate.