The petrochemical industry is related to the national energy strategy security and economic and social development, and plays a pivotal role in the national economy. The salient features of petrochemical enterprises are the large-scale continuous production, multiple production equipment, complex processes, and technology-intensive automation control technology of the international advanced level. Not only has the basic characteristics of the electric power industry but also the characteristics of the refining and chemical industry, these characteristics put forward extremely high requirements for the safe power supply of the enterprise power system. The production of the petrochemical industry has the characteristics of high temperature, high pressure, flammability, and explosiveness. Therefore, in the process of production and operation, if the important control device suddenly loses power, it will have a great impact, and even more serious will cause personnel Casualties, so some control devices in petrochemical applications need to be equipped with UPS power products to ensure uninterrupted power.