Recent content by Abby

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    High Exhaust Temperature Spread Trip

    It's awesome you worked here too, It's Near siddirganj James.
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    High Exhaust Temperature Spread Trip

    James, I am extremely sorry if I hurt you. My grandmother died a few days earlier. Also, I faced some issues about my mental health therefore I was disconnected. I see several threats of yours, I learnt a lot from this. I am very grateful to you, you are my admiration. About waiting for others...
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    High Exhaust Temperature Spread Trip

    I am waiting for CSA and other experts' judgment. This HIGH EXHAUST SPREAD TRIP topic is very popular on control.com. There are many contents but I can not find related to. The threads LTW posted >> TRIP's possible causes are discussed by CSA. To relate with this I post here directly so that...
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    High Exhaust Temperature Spread Trip

    I see L3BHF3 SENS ALARM MESSAGE during 8.30am , it was 3.5 hour before trip. IBH position detection checked no problem identified.
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    High Exhaust Temperature Spread Trip

    Yes It was, during 1.30 AM and trip incident occured 11.39 onthat time IBH trip solenoid alarm also come.
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    High Exhaust Temperature Spread Trip

    Yes, it is started after 1 hour, the event occurred. Yes, it is a combined cycle.
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    High Exhaust Temperature Spread Trip

    We experienced HIGH EXHAUST TEMPERATURE SPREAD TRIP due to the fault in IBH trip solenoid. Our system is GE 9FA and control system is MARK VIe and GT capacity is 230 MW . Trip Log alarm >> 1.30 Am IBH control valve suddenly open >> on that time IGV angle is greater than 62 DGA and load was...
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    Trip Issue

    Hi I am not currently working that company.@james. I hope this case study helps to learn many one Thank You
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    Trip Issue

    James, Thanks for your feedback。 I am also confused about PLC restart.I still don't know why UPS unable to support on that time.. There is another mystery ST trip..Low lube oil pressure// although there is a backup// DC support incase of Low Lube oil pressure. Regards Abby
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    Trip Issue

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    At Cold Startup Why ST load>GT load

    Dear All, We often see, At Cold Startup Steam Turbine load(MW) (e.g: 55.4MW) Higher Than Gas Turbine Power load(MW) (e.g: 48.5MW). I used to believe that Gas turbine is the main source of power, It's generating load always higher than Steam turbine load no matter what(misconception!!) 1. I...
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    Trip Issue

    Thank you everyone for your response . Sorry for late reply. The problem became resolved. Later i will discuss what happened and how we resolve the issue.
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    Trip Issue

    Machine Info: Gas Turbine: GE 9FA,Mark VIe control Cause of Shut down/Trip: ST> Tripped due Auxiliary Power failure because of Voltage fluctuation from Grid side. Before Unit Trip: Single/Combined cycle:Combine Cycle Reason for Trip: Problem during GT Trip: Due to Grid voltage fluctuation...
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    Combustion Can Band of Low/Med/High Peak Amplitude Function

    Hi The machine we used is GE 9FA there is 18 combustion can and combustion system is DLN2.0+. Each combustion have Low/Med/High peak amplitude of frequency. I want to know the function of combustion can band frequency at different amplitude and how it is related to Exhaust Thermocouple as found...
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