from the Forum department...
start up sequence of gas turbine
Power generation equipment control. topic
Posted by Ayed on 15 January, 2011 - 7:23 am
kindly i need the start up sequence of GAS TURBINE.
in our site our units are frame 7E.
note that:
i need in each % what will happen
from zero% up to 100% of speed.
i need this because i am new engineer in power plant.
note that, the MRK V is the controller.
if there is missing please tell me about it.

Posted by sardar9 on 15 January, 2011 - 12:11 pm
This is from my plant where we have four 7E frame with HRSG. After auxilliary checks (start selected already), GTG ramps up to maximum speed of about 1000 RPM depending upon oil temp with the help of torque converer and ALOP. This is a purge sequence lasting for 583 seconds, then L20TU1X1 drops out and GTG costs down to about 288 RPM.

GTG starts ramping up sequence and at about 10% of speed FSR is set for ignition (14 to 15 %), you will have one minute of firing sequence to get two or more flames. If you get flame earlier then one minute, machine proceeds to next warm up sequence. This is a 60 seconds absolute time. GTG then goes on acceleration mode with close loop with speed controlling the acceleration to about the thermal socks.

At 60% of speed starting mean drops out and GTG supposed to be self sustained on the fuel being used (L14HC). At about 97% of speed bleeds valve close, AHOP and ALOP drop and exhaust blower stars (with 10 seconds delay in between them, there are two of these) This is L14HS, L14HF permits for field flash. And IGV will acquire 57 degree at FSNL.

Let me know if this is adequate.

Your use of this site is subject to the terms and conditions set forth under Legal Notices and the Privacy Policy. Please read those terms and conditions carefully. Subject to the rights expressly reserved to others under Legal Notices, the content of this site and the compilation thereof is © 1999-2014 Nerds in Control, LLC. All rights reserved.

Users of this site are benefiting from open source technologies, including PHP, MySQL and Apache. Be happy.

On Monday mornings I am dedicated to the proposition that all men are
created jerks.
-- Avery
Advertise here
our advertisers
Help keep our servers running...
Patronize our advertisers!
Visit our Post Archive