Recent content by Zikwa

Thank you for your comments. In my report I was not trying to describe the full GE control philosophy in detail. I clearly mentioned that load is controlled by Droop Speed Control until the unit reaches Base Load, which is exactly the standard GE method. Our units are GE 9FA, equipped with...

That what I reach in this problem

Mark 6 e You are accurate we find also that there is difference in sensors value and it is clear when run evap cooler 26_ 31.2_ 31.4 And system choose 31.2 to make calculation and we see that 26 is real value because the other unit is 26 with evap I know that will affect the every thing it be...

You know that there is relation between inlet air temp and mwatt and we find in Mark 6 that every temp predict max mwatt allowable from chart and have signal mwatt_mcr and this signal send to dcs and named as max allowable mw from gas turbine So when we at remote and hot day the setpoint of...

OK you are write I'm sorry for tnr I think thh that my fault. Tnr get value from dcs when in Remote as we control the rate of load I think the problem coming from the load set point signal generated in dcs We will search for the root cause and when reach I will discuss with Thank you for...

12 years This started recently Tnr 3000rbm No base load button in dcs There is Remote load reference from dcs we give the maximum load from dcs like 255mw and it is automatically raised by Mark 6 The unit latch base load with igv not fully open at 85degree and when start evap cooler unit...

This also happen at hot day ambient temp 37c we reach base load 219 mw at 85degree of igv status is base load and when start evap cooler mw increase to 225 and igv decrease to 82 degree When We change mode from Remote to Auto and select load from remote to base load unit start open8ng igv and...

@WTF? Thank you for your interest This the logic for cool down

@WTF? You are right that's I was found that the timer l26cd 1440 min start after L14HR Does wheel space temp or bearing temp prevent cool down off process Or what I have to take care when I need to make cool down off immediately after shut down due to a problem Also i read that we can make...

..

In our system In normal operation Seal oil supplied from lube oil So when this alarm active the DC run first and ac not running And there is no event that control try to run ac And in logic ac related to low differential and if still low dc run And DC related to low seal pressure switch My...

But what hapeen is Alarm active / low hydrogen purity or seal oil differential pressure shut down And then DC seal oil pump run And ac seal pump not running