影响国产引进型300MW机组冷端性能的主要因素

Key Factors Affecting the Cold-end Performance of China-made 300 MW Introduced Power Unit

国产引进型 30 0MW机组冷端系统性能不良的问题带有普遍性 ,严重影响发电设备的经济运行。对此 ,不少电厂将问题归结于凝汽器面积不足 ,试图以增加凝汽器冷却面积来改善机组冷端性能。而主管部门和设计院等对此也长期意见不一。作者通过计算分析和现场试验数据分析了影响国产引进型 30 0MW机组冷端性能的主要因素 ,并提出了改善其运行性能的有效途径。

The problem of poor performance of cold-end part of China-made 300MW introduced power unit is very common which has seriously affected its economic operation of power generation unit. Some power plants have put the blame on the insufficient surface area of conden-ser and triecd to increase the cooling surface area of condenser so as to improve the performance of cold-end part of the unit. There are also differnent opinions between competent department and design institute over it. The writers of this paper have analysed the key factors which affected the performance of cold end of the introduced 300 MW unit based on the data of calculated analysis and field tests, and have also presented an effective way to improve its operating performance.