en.Wedoany.com Reported - Unit 5, a 660MW ultra-supercritical unit of Phase III of Dingzhou Power Plant, a subsidiary of CHN Energy Hebei Company, recently reached its rated load for the first time, successfully completing a full-load trial run. During the trial, the main and auxiliary equipment of the unit operated stably, with all parameters and environmental indicators meeting standards. The output complied with design requirements, laying the foundation for the subsequent 168-hour full-load trial run and formal commissioning.

Since Unit 5 was connected to the grid, the Phase III project team of Dingzhou Power Plant has coordinated resources from all parties. All personnel remained at their posts, closely monitoring commissioning milestones and systematically advancing startup tests. To ensure the full-load trial run succeeded on the first attempt, the plant strictly adhered to the group's refined commissioning management standards, implemented the "two tickets and three systems" and the system requiring personnel to be present for major operations, and strengthened supervision of critical operations. Given the complex system and high control precision requirements of the ultra-supercritical unit, the technical team analyzed operating conditions in advance, optimized combustion control and steam-water regulation procedures, comprehensively inspected equipment for potential hazards, and closed-loop rectified commissioning defects. During the trial, operators precisely monitored unit data and made real-time parameter adjustments; maintenance personnel conducted round-the-clock inspections, focusing on indicators such as vibration, temperature, and pressure. The plant proactively coordinated with the local power dispatch department, standardized grid connection operations, and ensured grid-related safety. During the trial, the unit's electrical protection, thermal control protection, automation, and instrumentation input rates all reached 100%; the full set of environmental protection facilities was activated simultaneously, strictly adhering to the "three simultaneities" requirement, achieving compliant pollutant emissions and green, low-carbon operation.

This successful full-load trial run of Unit 5 verified the system's operational reliability and accumulated practical experience for subsequent specialized tests. The project team will continue to advance, aiming to complete the 168-hour continuous full-load trial run to a high standard, facilitating the unit's early commissioning and providing stable power support for regional economic development.

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