上汽-西门子机型660MW机组一次调频性能优化探讨

Discussion on Primary Frequency Modulation Performance Optimization of 660 MW Unit of SAIC-Siemens

随着中国新能源发电的发展,尤其是特高压直流输电工程项目的快速推进,电网对火电机组的调频能力要求越来越严格,如何提高机组一次调频能力成为电厂热工人员的重要课题.本文分析了导致宁夏枣泉电厂上汽-西门子机型超超临界机组一次调频性能差的几个因素,其中包括DEH流量指令死区问题、滑压曲线不符合实际、机组协调性能不佳等,提出优化措施,并应用于宁夏枣泉电厂两台机组,取得了较好的效果,希望给同类型火电机组一次调频性能优化提供参考.

With the development of new energy generation, especially the rapid advancement of UHVDC transmission project in China, the power grid requires more and more stringent frequency modulation capability of thermal power units. How to improve the primary frequency modulation capability of units has become an important issue for thermal workers in power plants. This paper analyses several factors leading to poor primary frequency regulation performance of Siemens Unit in Ningxia Zaoquan Power Plant, including dead zone of DEH flow instruction, non-conformity of sliding pressure curve and poor coordination performance of units, and puts forward optimization measures, which have been applied to two units in Ningxia Zaoquan Power Plant and achieved good results. It hopes to give the same type of power units a reference.