Successful primary power supply to the 35kV substation for the air separation and air compression units in Nantong Blue Sea New Materials project

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On January 19, the 35kV substation for the air separation and air compression unit of the Nantong Blue Sea New Materials project, constructed by Huanqiu Jilin Chemical Construction, successfully received its first power supply. This marks the completion of the electrical system preparation for operation of this unit, laying a solid foundation for subsequent joint testing of the air separation and air compression systems as well as the full commissioning of the entire facility. It is reported that the construction work for this substation involves two main categories: core equipment and auxiliary systems. The core equipment includes 2 sets of 35kV transformers, 2 sets of 10kV transformers, 2 sets of 10kV capacitive compensation units, 31 sets of 10kV vacuum circuit breaker cabinets, 57 sets of 380V low-voltage switchgear, as well as 4 sets of 10kV air-insulated cast busbars and 6 sets of low-voltage dense busbars ； The auxiliary system is equipped with 2 sets of DC power supplies, 1 set of EPS power supply units, 1 set of UPS uninterruptible power supply units, and 12 network back-office communication cabinets; strict requirements are imposed on construction quality, process control, and timely progress. In the face of complex construction tasks, the project department adheres to the concept of \"construction without outstanding items\", adopting it as a key management approach throughout the entire process of substation construction. Before construction, the project team coordinates the construction plan in advance, refines the power reception scheme, and conducts thorough safety inspections and risk assessments prior to power connection, to ensure that every step and milestone is under control. During the construction process, strict adherence is made to the requirement of \"cleaning the site after work is completed and all materials are removed\" with regard to key details such as cable installation, equipment labeling, proper grounding, sealing of holes, and proper construction practices. Rectifications are carried out simultaneously, and tasks are marked as completed at the same time, to firmly prevent the situation of handing over the project with unresolved issues. At the same time, through early intervention, process control, and checklist-based management, it ensures that while the power reception nodes are completed, the quality of the on-site physical components, their appearance, as well as the completeness of the relevant documentation all meet the required standards, thereby eliminating any residual issues arising from the construction process from the very beginning. On the day of power reception, all construction workers had clear roles and efficient coordination; the power reception process was safe and smooth, all equipment operation parameters were normal, and a successful power reception was achieved on the first attempt.