1000MW超超临界空冷机组厂用电系统谐波分析

针对1 000 MW超超临界空冷发电机组空冷岛厂用电系统风机变频器的谐波问题,阐述了谐波产生的原因及其危害,并对3个推荐的空冷岛低压厂用电系统接线方案进行了仿真计算。仿真结果表明了消除或限制谐波对空冷岛厂用电系统的必要性和重要性,提出了4种限制谐波的方法,并指出采用有源滤波装置是当前比较有效的限制谐波手段。

Harmonic Analysis for Auxiliary Power System of 1000 MW Super-critical Air-Cooling Unit

According to the harmonic problem of fan motor frequency converter in auxiliary power system of 1 000 MW super-critical air-cooling island,the causes and hazards of harmonic are introduced.Simulative calculation for low voltage auxiliary power system.in three selected air-cooling island were performed.The calculation results show the necessity and importance of the elimination or limitation of harmonic for air-cooling island auxiliary power system.Several methods for harmonic limitation were proposed and co...