Reformation of control logic of highpressure steam source for feed pump driving turbine

Abstract

Abstract: Abstract:In operation of the feed pump No.3B driving turbine of the 600MW unit in a power plant, the vibration of the rear bearing in xdirection continuously increased and achieved the trip value finally, and the protection of the feed pump driving turbine tripped. The operation parameters of the feed pump driving turbine before and after the tripping were analyzed and compared. Combing with the steam distribution mode and the control logic, it was determined that the reason of the vibration is poor highpressure steam source control mode of the feed pump driving turbine. According to the analysis result, the control logic was improved, and the larger vibration of the feed pump driving turbine was eliminated.

Key words: Keywords:feed pump driving turbine, microelectrohydrulic control system (MEH), main stop valve, regulating valve, vibration, trip, control logic

LIU Jie. Reformation of control logic of highpressure steam source for feed pump driving turbine[J]. Huadian Technology, 2014, 36(3): 32-33.

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Reformation of control logic of highpressure steam source for feed pump driving turbine

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