关键词: 送风自动, 氧量校正, 总风量

Abstract: In view of the existing problems such as poor adjustment quality and incapability of auto switch-in in the air supply automatic control system of the 650-MW supercritical unit in a certain power plant, the optimizations on the air volume and the oxygen measurement instruments as well as the automatic control strategy are conducted. The practical operation shows that the optimized air automatic control system can meet the unit operation requirements under the 50%-100% static and variable loading conditions, which is helpful to improve the air automatic regulation quality and the commission rate.

Key words: air supply automation, oxygen correction, total air flow