8月26日，国家电投集团贵州金元织金“上大压小”异地改建项目2×660兆瓦超超临界双拱型燃煤机组实现双机投运一周年。一年来，两台机组保持安全稳定运行，累计发电量突破50亿千瓦时，实现年产值约20亿元，贡献地方税收1.25亿元。

On August 26th, the "upgrading large units and reducing small ones"异地 reconstruction project of 2×660 megawatt ultra-supercritical double-arch coal-fired units of Guizhou Jinyuan of China Power Investment Group was completed one year after its commissioning. Over the past year， the two units have maintained safe and stable operation， with a cumulative power generation exceeding 5 billion kilowatt-hours. The annual output value has reached approximately 2 billion yuan, and they have contributed 125 million yuan in local taxes.

该项目位于贵州省毕节市织金县，由国家电投集团贵州金元股份有限公司与贵州能源集团控股的贵州盘江电投发电有限公司共同投资建设，总投资约52.62亿元，同步配套750兆瓦风电、光伏项目，是西南地区首个千万千瓦级综合能源基地的重要组成部分，也是“十四五”期间贵州省重大工程之一、贵州省首批“风光火储一体化”高效清洁能源项目。

This project is located in Zhijin County, Bijie City, Guizhou Province. It is jointly invested and constructed by Guizhou Jinyuan Power Co., Ltd. of China Power Investment Corporation and Guizhou Panjiang Power Investment Co., Ltd., which is controlled by Guizhou Energy Group. The total investment is approximately 5.262 billion yuan. Simultaneously, 750 megawatt wind power and photovoltaic projects are also being developed. It is an important part of the first million-kilowatt comprehensive energy base in the southwest region, and it is also one of the major projects in Guizhou Province during the "14th Five-Year Plan" period and the first batch of "wind, photovoltaic, thermal and storage integrated" efficient clean energy projects in Guizhou Province.

2025年8月6日、8月26日，1号、2号机组先后通过168小时满负荷试运行，主要参数达到设计值，环保指标远低于超低排放标准。项目同步关停4台300兆瓦落后煤电机组，严格落实国家“上大压小”政策。

On August 6th and August 26th, 2025, Units 1 and 2 successively completed 168-hour full-load trial runs. The main parameters met the design values, and the environmental protection indicators were far below the ultra-low emission standards. At the same time, 4 300-megawatt backward coal-fired power units were shut down, and the national "upgrading large and reducing small" policy was strictly implemented.

作为世界首台（套）应用于660兆瓦超超临界参数等级的双拱型（W火焰）燃煤机组，该项目首次将双拱燃烧技术与超超临界参数相结合，填补了该容量等级无烟煤高效清洁燃烧设备空白。针对贵州高硫无烟煤“难着火、难稳燃、难燃尽”特性，机组通过优化炉膛结构、增强烟气回流，有效延长无烟煤燃烧停留时间，锅炉设计效率达93%，为同类型机组最高水平。机组采用煤层气替代柴油点火技术，启停阶段二氧化碳排放量减少53%，氮氧化物、硫化物等污染物排放量下降超过90%。

As the world's first (and only) 660 megawatt ultra-supercritical parameter-level double-arch type (W-flame) coal-fired unit, this project is the first to combine the double-arch combustion technology with ultra-supercritical parameters, filling the gap for efficient and clean combustion equipment for lignite at this capacity level. In response to the characteristics of high-sulfur lignite in Guizhou, such as "difficult ignition, difficult stable combustion, and difficult complete combustion", the unit optimizes the furnace structure and enhances the flue gas reflux, effectively prolonging the combustion time of lignite. The boiler design efficiency reaches 93%, which is the highest level among similar units. The unit adopts coal seam gas as a substitute for diesel for ignition, reducing carbon dioxide emissions by 53% during start-up and shutdown stages, and reducing pollutant emissions such as nitrogen oxides and sulfur compounds by over 90%.

运行数据显示，机组供电煤耗降至284.01克/千瓦时。按设计年发电量约50亿千瓦时测算，与同类型传统机组相比，每年可节约标准煤约12万吨，减少二氧化碳排放约30万吨。项目年消纳本地高硫无烟煤约300万吨，全部建成后总装机规模将达2070兆瓦。

The operation data shows that the coal consumption for power generation of the unit has dropped to 284.01 grams per kilowatt-hour. Based on the estimated annual power generation of approximately 5 billion kilowatt-hours, compared with traditional units of the same type, it can save about 120,000 tons of standard coal and reduce carbon dioxide emissions by about 300,000 tons per year. The project will consume about 3 million tons of local high-sulfur anthracite annually. Once completed, the total installed capacity will reach 2,070 megawatts.

在电网调度中，机组深度参与调峰运行，最低稳燃负荷可达30%额定负荷，全年利用小时数约3600小时，新能源大发时段降负荷运行、用电高峰时段快速爬坡顶峰，推动煤电机组由传统“单纯发电”向“保供与调节并重”功能转变。

In power grid dispatching, the generating units actively participate in peak load regulation operations. The minimum stable combustion load can reach 30% of the rated load, and the annual utilization hours are approximately 3,600 hours. During periods of large-scale generation of new energy, the load is reduced, and during peak electricity consumption periods, the units accelerate to reach the peak, promoting the transformation of coal-fired power units from the traditional "solely for power generation" function to one that emphasizes both supply guarantee and regulation.