Good evening,
I will try to ask these questions briefly. Please be kind as this is my first post to this forum, and I am fairly new to the industry. (as far as GT's are concerned).
Plant info:
7EA GE Gas Turbine (DLN1+) MKV GE Control System
GE Steam Turbine
Plant MW Control Enabled
Michigan (cold, 10 degrees F)
1. While in preselect load, and lowering MW manually, how can an Operator determine at what point the GT will enter into Lean-Lean Mode? How does an Operator go about determining this point to avoid it.
2. What affect does operation of the GT at preselect load vs. base load have on GT maintenance? I've read somewhere that every hour spent in preselect load is considered 4 hours at base load from a maintenance standpoint.
3. While operating in preselect load, the bleed heat valve is fluctuating between 20-40% open which is causing MW swings. Is there a way to minimize these swings to increase plant MW output stability?
I'm sure there will be more questions, but I will start with this. Thank you in advance for your responses. I appreciate the time you have taken out of your day to respond.
Bill
I will try to ask these questions briefly. Please be kind as this is my first post to this forum, and I am fairly new to the industry. (as far as GT's are concerned).
Plant info:
7EA GE Gas Turbine (DLN1+) MKV GE Control System
GE Steam Turbine
Plant MW Control Enabled
Michigan (cold, 10 degrees F)
1. While in preselect load, and lowering MW manually, how can an Operator determine at what point the GT will enter into Lean-Lean Mode? How does an Operator go about determining this point to avoid it.
2. What affect does operation of the GT at preselect load vs. base load have on GT maintenance? I've read somewhere that every hour spent in preselect load is considered 4 hours at base load from a maintenance standpoint.
3. While operating in preselect load, the bleed heat valve is fluctuating between 20-40% open which is causing MW swings. Is there a way to minimize these swings to increase plant MW output stability?
I'm sure there will be more questions, but I will start with this. Thank you in advance for your responses. I appreciate the time you have taken out of your day to respond.
Bill