The primary power supply to Substation No. 1 of the ethylene plant in Tarim’s 1.2 million tons/year Phase II ethylene project has been successfully established

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On October 28, the primary power supply was successfully established at Substation No. 1 of the second-phase ethylene plant in Tarim, with an annual production capacity of 1.2 million tons. This achievement lays a solid foundation for carrying out motor testing and plant commissioning activities in the subsequent stages, marking another significant milestone in the project’s construction that has been completed on schedule. The power supply scope this time covers the core equipment of the substation, mainly including 2 x 25MVA 35/10.5kV oil-immersed transformers, medium-voltage switchgear, 4 x 1600kVA 10/0.4kV oil-immersed transformers, 2 x 2500KVA 10/0.69kV oil-immersed transformers, as well as the corresponding low-voltage distribution cabinets. As the \"power heart\" and energy distribution hub of the entire ethylene plant, Substation No. 1 has, since the start of earthwork work in July 2024, completed key tasks such as the construction of its main structure, the installation of panels and cabinets, the lifting of transformers, and the laying of cables. To ensure the successful completion of the power connection process, the project team worked closely with the owner, supervisors, and other relevant parties. It organized multiple construction review meetings to assess progress, identify and resolve various issues that hindered the power connection. In accordance with relevant standards, industry norms, and the owner’s requirements, a detailed construction plan and power connection strategy were developed, which were continuously optimized to facilitate the completion of remaining tasks, thus providing a solid foundation for a successful power connection. During the preparation phase for power reception, the project team, in collaboration with various departments of the owner, the supervisor, and the construction contractor, carried out the \"three inspections and four determinations\" in advance. They systematically reviewed the remaining tasks related to civil engineering, fire protection, electrical systems, telecommunications, and other areas, identified the responsible units and personnel, established corrective actions and deadlines, and closely monitored the progress of these corrections as well as the arrival of equipment and materials. At the same time, the project department organized design representatives and specialist engineers to go to the construction site in person, conducted multiple technical briefings for the workers, ensured strict control over installation quality, resolved technical issues on site promptly, and carried out repeated simulated power-on drills to standardize the operational procedures at each stage. By \"posting regulations on walls and assigning responsibilities to individuals,\" various management rules, safety reminders, and information on responsible persons are posted in advance to ensure that all safety measures are effectively implemented. At 10 a.m., the project team, together with the owner and the supervision unit, carried out a final inspection prior to power connection, carefully verifying the condition of various equipment such as transformers, busbars, and panel cabinets one by one. After completing the verification adjustments to the equipment status, the power reception procedure was officially initiated at 11:04. After completing a series of prescribed tests including phase comparison, impact tests, automatic transfer switch tests, quick switching tests, switching operations, heavy gas trip tests, and differential protection tests, at 13:01, all power reception procedures were successfully completed in one go, and the substation was officially powered on. The successful connection of power to the primary side of Substation No. 1 in the ethylene plant represents a significant step forward in achieving the project’s overall goals. The substations at the desalinated water station and the central laboratory also succeeded in receiving power on the 20th and 27th respectively. Taking these successes as a catalyst, the project team will focus on the remaining construction tasks and make every effort to meet the target of completing the work by the end of the year.