Title :
Analysis of Primary Air Fan Run-Back in 1000MW Ultra Supercritical Coal Fired Generation Unit
Author :
Yin, Libao ; Xu, Qisheng ; Wen, Zhiyong ; Song, Jinghui ; Xia, Ruiqing ; Zhou, Liming
Author_Institution :
Electr. Power Res. Inst., Guangdong Power Grid Corp., Guangzhou, China
Abstract :
In this paper, it takes the 1000MW ultra supercritical coal-fired unit as the research object and describes the runback process of primary air fan. With the curve, some mainly processes including the amount of fuel, hot primary air pressure of the header, inlet air pressure of each mill, negative pressure of furnace, superheat degree of middle point and feed-water flow were analyzed. The coal-water ratio of primary air fan can provide reference for dealing with the analogic accident by the similar unit. At the same time, some valuable datas can be used during the coal pulverizing system of large electric generation unit.
Keywords :
steam power stations; analogic accident; coal pulverizing system; coal-water ratio; feed-water flow; fuel amount; furnace; hot primary air pressure; inlet air pressure; large electric generation unit; middle point; negative pressure; power 1000 MW; primary air fan run-back; research object; runback process; superheat degree; ultra supercritical coal fired generation unit; Boilers; Coal; Educational institutions; Furnaces; Power generation; Power systems;
Conference_Titel :
Power and Energy Engineering Conference (APPEEC), 2012 Asia-Pacific
Conference_Location :
Shanghai
Print_ISBN :
978-1-4577-0545-8
DOI :
10.1109/APPEEC.2012.6306932
