We're now delivering 6.6 kW in the village. It was operator error.
Studer suggested a setting change........ It worked great. The
variostrings were originally set up to independently look at the battery
voltage to determine the correct charge state. By telling the
variostrings to synchronize to the extender charge state everything
worked great. The voltage on the input to each variostring is now held
rigidly at the specified voltage of 300VDC. I've never seen it waiver.
We're seeing 50m head at the fat pipe in the turbine house, so our
penstock losses are pretty small. I think we've over-designed the
penstock........... That's OK, since we have room for another 2 turbines.
We're getting LOTS of traffic through the installation from neighbouring
villages, including local government officials. Everyone seems to be
drooling over the improvements relative to the usual practice. The
only negative comment was from the operator of the system in the village.................. he thinks it's too complex........ which is our challenge.
The first AC Relay board is installed and running fine. I took a nice
hot shower this afternoon (I was given first-dibs!). The shower water
is automatically regulated between 45 and 47 degree C.
The turbines have been running flawlessly for about 3000 hours, so we've
taken them apart to look at things. You'll get a kick out of this.
There are leaches, appx 10 mm long, growing in the PVC pipe right next
to the jets. They aren't growing in the big pipe.......... they must
like the higher water flow..........other than that, everything looks good to
us. We now have SFK grease in plastic bags, and we're now using an SFK
grease gun that works very nicely.
Take care, and thanks again for all your help.
Michael comments - it is likely by opening up the jet sizes, that these turbines can be taken to 8kW, worth a try when more power is needed.