Problems in variable frequency control of boiler primary air fan and countermeasures

Huadian Technology ›› 2013, Vol. 35 ›› Issue (1): 46-48.

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Problems in variable frequency control of boiler primary air fan and countermeasures

ZHANG Bo, KONG Linghui, FENG Hongwei, SHANG Haifeng, TIAN Shupeng

Baotou Third Thermal Power Plant, Baotou 014060, China

Received:1900-01-01 Revised:1900-01-01 Online:2013-01-25 Published:2013-01-25

Abstract

Abstract: After the variable frequency reformation of the boiler primary air fan of a power plant, the frequency converter of the primary air fan failed frequently and led the air fan to trip, and after the fan tripped, some problems exist in loading process of the fan in restarting, which influence on safe and stable operation of the unit seriously. The all links of the variable frequency control of the primary air fan were analyzed, and targeted optimization reformation was carried out. The test shows that the optimization reformation realizes the design goal and provides good basis for safe and stable operation of the unit.

Key words: primary air fan, frequency converter, fault analysis, interlock control, control optimization

ZHANG Bo;KONG Linghui;FENG Hongwei;SHANG Haifeng;TIAN Shupeng. Problems in variable frequency control of boiler primary air fan and countermeasures[J]. Huadian Technology, 2013, 35(1): 46-48.

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Problems in variable frequency control of boiler primary air fan and countermeasures

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