The first phase-shifting transformer and associated frequency converter for the Tarim Ethylene Plant project have successfully received power for the first time

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The first phase-shifting transformer and frequency converter were successfully powered up, marking a key breakthrough in the development of the core power system. On December 21st, the project team responsible for the Tarim ethylene plant at Huanqiu Sixth Construction Company managed to supply power to the first phase-shifting transformer along with its associated frequency converter successfully; all parameters met the required standards, and the equipment operated smoothly and stably. This successful power reception marks a key breakthrough in the development of the core power supply system for the four units, laying a solid foundation for the smooth progress of subsequent individual unit commissioning stages. Phase-shifting transformers and frequency converters serve as the \"core components\" of a compressor power system, performing key functions such as precise voltage regulation, dynamic power compensation, and speed control of essential equipment. The progress of their installation and commissioning is directly related to the overall construction timeline of the project. The power reception equipment in this project is characterized by dense technical parameters, high requirements for installation and commissioning precision, and significant challenges in terms of safety management. In response to this, the project department attached great importance to it and made advance plans and arrangements. It formed a dedicated team consisting of electrical engineers for the project, key construction workers, and professionals from equipment manufacturers, to oversee all aspects of the preparations related to power reception. During the preliminary preparation phase, the project team held several specialized meetings to thoroughly discuss the construction plan, and established detailed safety control and quality assurance measures for key stages such as equipment lifting, equipment installation, cable laying, wiring debugging, and testing. During the construction process, all personnel strictly adhered to the specified requirements, successfully completing a series of tasks including the installation of the transformer inverter unit, the installation of accessories, cable laying, the fabrication of cable cold-shrink terminations, and the debugging of the secondary circuit. To ensure safe power reception, the project team, in collaboration with the owner, supervisor, and manufacturer’s technical staff, conducted multiple rounds of thorough inspections regarding the quality of equipment installation, the grounding system, and protection settings. Any potential hazards were promptly addressed to establish a solid safety barrier for the power reception process. On the day of power reception, the on-site command was organized, and personnel in various positions worked together in coordination to carry out key steps in strict accordance with the established procedures, such as closing the high-voltage side, conducting a live test run of the transformer, and performing linkage tests on the frequency converter. According to on-site monitoring, the phase-shifting transformer is operating smoothly, with normal values for parameters such as winding temperature and oil level ； The output frequency and voltage of the inverter are precisely stable, all performance parameters meet the design requirements, and the power reception was successful on the first attempt. The successful power connection of the first phase-shifting transformer and frequency converter in this ethylene plant not only fully verified the effectiveness of the power supply scheme and the reliability of the construction techniques, but also enhanced the problem-solving capabilities of the project team’s technical staff as well as the coordination skills of the construction workforce. Next, the Tarim Project Team will take this breakthrough as an opportunity to comprehensively summarize the experience, accelerate the progress of subsequent equipment installation and commissioning, and make every effort to achieve the project’s target of completion and operation.