Recent content by arunrajput1990

  1. arunrajput1990

    Frame 5 GT loading problem after MI

    Good Evening Sir Please find the attachment for CSRGVTB algorithm/block and load regulator module
  2. arunrajput1990

    Frame 5 GT loading problem after MI

    Ok sir During next motor change over we will try Good Evening Sir You are master in explaining the matter. Well explained about isoch. speed control. a). when we started the unit I have no alarm history now. we are looking hard copy for that. b). When we started big motor, every time "Gas...
  3. arunrajput1990

    Frame 5 GT loading problem after MI

    Good Morning All a). Yes GT exhaust goes to HRSG for steam generation. b). No such type of arrangement for NOx reduction during the operation. c). Definitely I will share what we get? Thanks
  4. arunrajput1990

    Frame 5 GT loading problem after MI

    Good Morning Sir a). yes This problem comes after MI. We upgraded our control system to mark VIe from mark IV in 2011. b). I try to explain about TTRXB. If IGV opening is <76 deg, Then TTRXB=TTRX+CSRGVTB(30 deg F) If IGV opening is >76 deg Then CSRGVTB=(CSKGVMAX-CSGV)*3 for Example if IGV...
  5. arunrajput1990

    Frame 5 GT loading problem after MI

    Again thanks sir Supplier is saying that this is a normal phenomena when a big motor took start. we send the data to them. They will visit to site very soon. We are in touch with them. a). TTRXB is the TTRX+CSRGVTB(30deg F/ 16.7Deg C) please check the attached file for TTRX and TTRXB block...
  6. arunrajput1990

    Frame 5 GT loading problem after MI

    Dear Sir In our control system, there is no arrangement of L14P1X and L14P2X. starting device trip problem has been solved by reducing hydraulic torque convertor drain line orifice dia.
  7. arunrajput1990

    Frame 5 GT loading problem after MI

    Dear Sir I hope now you are at Home and safe. a). Every time when we start 1 MW motor (or above 1 MW motor) GT shifted to base load. (IGV is not full open, FSRN value exceed to FSRT for 2-3 sec and GT status changed Isoch. speed to Base load). this time we, observed that when we loaded GT...
  8. arunrajput1990

    Frame 5 GT loading problem after MI

    Thanks for feedback Dear sir 1. I will comment on this after watching cap. 2. During the motor startup, FSRN value exceed to FSRT so GT status changed to "Base load" from isoch speed. 3. We are not connected to grid. GT is operated for captive power plant. Up to 1.3 MW motors(various...
  9. arunrajput1990

    Frame 5 GT loading problem after MI

    Good morning sir 1. I have no idea about why L4Y and L3SMT are added in series. 2. Rated output of GT is 22.4 MW at site condition. 3. There are five mode of " mode selector " are define in mark VI control 1. Off mode 2. Crank mode 3. Fire mode 4. Auto mode 5. Remote mode We run GT in...
  10. arunrajput1990

    Frame 5 GT loading problem after MI

    Dear Sir 1. Plz find the attached file for TNR block. 2. L3SMT is the output signal of that rung. 3. As Mr CSA suggest to check the relationship between TNR vs Load. Please find the attached file. 4. I want to know, what is the difference between auto and remote mode(Mode Selector) Thanks ...
  11. arunrajput1990

    Frame 5 GT loading problem after MI

    Thanks Sir for valuable feedback..... 1. It is define in our control system that TTRX is lesser of TTK_I(968 F), TTRXP and TTRXS. we operate our GT at part load. and IGV follow TTK_I(968 F) because TTRXP and TTRXS is higher than TTK_I. 2. TNK14HA1= 51% TNK14HA2=47.1% plz check the...
  12. arunrajput1990

    Frame 5 GT loading problem after MI

    sir, Thanks for reply we run only one GT for power supply (captive power plant) we are not connected to power grid we operate GT in isochronous speed control to maintain frequency 1. During MI, we replaced fuel nozzles, combustion liners and transition pieces with new one but design was same...
  13. arunrajput1990

    Frame 5 GT loading problem after MI

    Good Evening Sir I am working on frame 5 GT (PG5371PA) with mark VIe control system for captive power plant at part load with IGV Exhaust Temp control mode ON. We started our GT after MI and uprate in first week of may. Following control constants were changed by maintenance TTK_K-63.9 to 65.96...
  14. arunrajput1990

    PG5371PA frame 5 turbine running parameter fluctuation problem

    Hello sir Thanks for reply 1. Sir you are right, TTXM is following isothermal line. 2. Now our GTG is stable. If unit goes unstable we will try FSR gag for observation 3. NO any changes made. we uprate our GTG in 2017. then some constant were changed by BGTS. GTG was running normal upto now...
  15. arunrajput1990

    PG5371PA frame 5 turbine running parameter fluctuation problem

    Thanks for quick response Dear Sir Back up reference active alarm is based on FSR and Primary Exhaust Temp control is based on CPD. both value was changes as CPD and FSR changed. "Back up temp reference active" alarm changes quickly from alarm to normal and normal to alarm. but when IGV temp...
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