At 00:00 on August 27, Unit 2 of Guizhou Zhijin Pingyuan Clean Energy Project, equipped with a turbine-generator set supplied by HTC, successfully completed its 168-hour full-load reliability test run. Throughout the test, all systems operated stably with parameters meeting design specifications, marking the full commissioning of the world's first 660MW ultra-supercritical dual-arch coal-fired unit.

 

The project utilizes two 660MW-class, ultra-supercritical, single-reheat, single-shaft, four-cylinder, four-exhaust-flow, reaction-type condensing steam turbines supplied by HTC, equipped with 1040mm last-stage blades. Through multiple technological innovations—including flow path optimization to reduce energy loss, valve performance enhancement for improved control accuracy, and admission structure refinement for efficient steam energy utilization—the units have achieved breakthroughs in both thermal performance and flow path efficiency. Furthermore, the application of an optimized design integrating proven cylinder and valve modules from multiple similar projects, along with the selection of new high-temperature materials with demonstrated service reliability, ensures inherently flexible start-stop capability, secure and stable operation, and efficient maintenance accessibility. The advanced nature and reliability of the product have reached industry-leading levels.