Z
We have a client who has 4 generators in a power farm primarily providing power for their own needs but also exporting power to the grid.
We supplied one turbine-generator; the others were existing. The problem is that in island situations our turbine often trips where the others don't. The client keep pointing at us that our governor is not responsive enough.
The complete picture is as follows:
1. Back-pressure Steam turbine-generator, 32MW, mechanical governor with direct plant load of 20MW with rest being "exported" to other parts of plant with 11kV distribution.
2. Reactive Steam turbine-generator, 34MW, mechanical governor with direct plant load of 28MW with rest being "exported to other parts of plant with 11kV distribution.
3. Our Back-pressure Steam turbine, 48MW, electronic governor with direct plant load of 5MW with rest being exported to grid.
4. Gas turbine-generator, 45MW, electronic governor with all it's load distributed in plant.
On top of this our turbine has steam extractions providing to the steam consumers on the plant as well, all individually controlled.
We have pointed out that because we have to shed 90% of our load during an island, whilst maintaining stable output to the steam consumers, the turbine cannot respond any faster and that they need to load our turbine more directly with the plant.
They keep saying it is our droop settings causing the instability (turbine trip on overspeed).
Your comments please!
We supplied one turbine-generator; the others were existing. The problem is that in island situations our turbine often trips where the others don't. The client keep pointing at us that our governor is not responsive enough.
The complete picture is as follows:
1. Back-pressure Steam turbine-generator, 32MW, mechanical governor with direct plant load of 20MW with rest being "exported" to other parts of plant with 11kV distribution.
2. Reactive Steam turbine-generator, 34MW, mechanical governor with direct plant load of 28MW with rest being "exported to other parts of plant with 11kV distribution.
3. Our Back-pressure Steam turbine, 48MW, electronic governor with direct plant load of 5MW with rest being exported to grid.
4. Gas turbine-generator, 45MW, electronic governor with all it's load distributed in plant.
On top of this our turbine has steam extractions providing to the steam consumers on the plant as well, all individually controlled.
We have pointed out that because we have to shed 90% of our load during an island, whilst maintaining stable output to the steam consumers, the turbine cannot respond any faster and that they need to load our turbine more directly with the plant.
They keep saying it is our droop settings causing the instability (turbine trip on overspeed).
Your comments please!