April Fools Day Results

Another month with very little wind.  When there was wind, it was gusty with low averages.

Power made this month 307 KWH

Best output so far

NYSERDA gave me the okay to do my reporting at the end of the month rather than on the 27th.  Feb. is the perfect month to make the switch.

This month the wind picked up.  Too much wind last weekend.  Those peak wind speeds = turbine shut down.  The wind was an average of 8.5MPH for the month.  Power made 432KWH

During the really strong winds the noise came back, it must be the breaks. But over all, it is still much  quieter now that the hub has been tightened.

Loud noise source found?

My husband an I took the wind turbine down yesterday to see if it was a loose nut on the flange that was causing the loud airplane sound. when  we shook the blades they did seem to wobble back and forth more than it should and made kind of a " wa wa"  sound.  One thing we didn't consider was that this nut was gigantic. About twice the size of the nuts that hold the tower together.   We tried to tighten it with a pipe wrench but that would not move it. With the blades on, you really can't get a wrench in there very well.  You really need a big socket to go around this or take at least one blade off.   Here is a picture of what the nut looks like, under the hub cap.

I looked back at my youtube video -  and saw that it was originally tightened down with a pipe wrench but before the blades were attached so there was some room to get the wrench next to the nut. You can also see that the shaft sticks out about 1/4" and now it is flush with the shaft.

We called Redriven to tell them our findings and that we couldn't tighten it ourselves. They said they would send someone next week to tighten this down.

November Results

This month we’ve had a few issues with the software. It has been having errors in low wind and doing a lot of extra yawing. We’ve had to unwind it twice. Not huge issues but we missed a few hours of wind here and there when we were sleeping or away. There is a new version of software that should fix these low wind issues, but we were not able to get it to load. We’re hoping a tech will come by soon to upgrade us. With the next version of software, upgrading will be able to be done remotely they say.




This month we had a total of 286KWH of power. The average wind speed for the month was only 5 miles per hour.

Other news this month – I’m glad to see that NYSERDA still has Redriven listed as a choice. The more turbines they have in NY State the more access we will have to the technicians.

http://www.nyserda.ny.gov/Page-Sections/Renewables/Small-Wind/Eligible-Wind-Turbines.aspx

October a Record Breaking Month

Another record broken.  From Sept 27 to Oct. 27 We produced 408 KWH for the month. Average wind speed was 6.3 mph. The inverters recorded that they produced 529KWH for the month.  Also, we have been running without an outage since July!

Last Sunday Scott from Redriven was here and upgraded our system (Nacell, long board and HMI to version 3.34. 

This was not a big upgrade. You can now get live wind speed on the main screen . The new software has Internet connection capability again. The main screen now has RPM, MPS and Degrees. It also had better error handling so there will be few times when it completely shuts down based on faults alarms.  We've had it for 6 days and so far it seems better than the last code. 

New best production day ever – In August?

Things are looking up. Some of you might remember last August we had a net loss of 67 KWH of power running the turbine rather than making any power. With that in mind, we were shocked to have our “best production day ever” this month – 40KWH in a 24 hour period


My husband measures every morning so in order to see the wind you really need to piece together two daily measurement graphs. The best day ever was from 8am august 24 to 8am August 25th.

 

 






The new Redriven programing and brake design must be working. We had a net gain of 108KWHs for the month of August.


Here is the graph for the whole month. Although average wind speed is a very low 1.5 mph, there were plenty of gusts this month.

A hurricane is on its way up the eastern seaboard.  Let’s hope it tracks so we only get a steady ~20 MPH.  I'm hopeful we can beat that best day record soon and get a new best month ever record too.

Improvements with the new version of software

We had a surprise visit from Kyle / Redriven Friday. He gave us an upgrade to Diagnostic HMI Version 3.18

We’ve noticed a few improvements in the software and were told about a few others.

The settings all save now in Flash. There is new flash program that seems to upload and download software. In the older version there were 3 setting that had to be re-entered when you lost power. These should hold now after a power outage.

The screen now turns off when you are not actively looking at it that should improve on power consumed by the system. Also the main screen shows Voltage, RPM and Wind speed all together on one graph displaying the last hour of readings.

Happy Anniversary!

Wed July 27th was our one year anniversary of being connected to the grid.





First – This month’s reading.  July is not a good month for wind we made  76KWH



Here is a graph I put together on wind speed vs.power produced. 

This graph shows the average wind speed for the day and the power made for the day.

The reading from the inverter measuremt which shows the power they made before the loss of the system was 181.7 KWH.

For the year the inverters made 1,719KWH. Maybe not so bad considering the system was down most of the time between Sept and June.


My monthly reading added to gether  is a net of 599 kWH for the year

We’ve been graphing each day – power gained on windy days and power lost on calm days is about 2 to 3 KWHs.  When the wind is ~2.5m/s it seems to break even. The system seems to use about 300watts without any wind.

We’re still spinning!

 Yesterday we made 13 KWHs with average wind at 8.3 mph. 

Were making power again!

We took the turbine down and stuck a coat hanger in the hole at the end of each blade.  On the blade that was continuously in the down position, I couldn't see in the hole.  The hole didn't seem clogged when I stuck in the hanger and the hanger was not wet when it came out.  We thought we were unsuccessful, but when we raised the tower, it started spinning!   Possibly is was clogged and the water had moved to the center when it was lowered?  In any case it is spinning freely and making power again.

Update: at 6PM - Ben said he did he did the same thing to the turbine in Governor NY and it is now working too.

We've got wind now but still not spinning

We ran for just a few minutes very slowly last week and haven’t spun again since.


Ben from Redriven was here Thursday and Saturday and completely reloaded the software. Of course, as usual, no wind. But today there is plenty of wind and the turbine is not spinning.

My husband just came up with a plausible theory that one blade has water in it which prohibits it from spinning.  I have noticed that lately it always stops in a t -shape with one blade strait down. It didn't seem to do that last fall. That would makes sense why it wouldn't spin without some serious wind if one blade had water in it. A while back Parker drilled some holes in the blades to let water out. Maybe he missed one or it is clogged.

Below is a picture of the new screen showing over 4 meters per second. Right now the wind is at 7 meters per second and the turbine is still not moving. Redriven says the other system in Governor, NY is behaving the same way. Redriven thinks it might have to do water that got into the generator while down for several months.

 
No errors at all, but still not moving.

We're working again, but now no wind!

The Redriven guys, Ben and Dave, finished up Saturday morning.  The wind turbine spun for a few minutes Saturday afternoon. Unfortunately, there hasn't been any wind since. Yesterday, the wind came up to 3 meters per second - starting speed, but didn't last long enough to really get going.   The new way that the system yaws is much slower, so you need some consistent wind to get it started.   I'll write more about the new yaw system soon and show the new display screen.  The forecast for today is 1-2 miles per hour.

Today is also my monthly reporting day.  Since we only made power for a few minutes this month and raised the tower a few times, we are in negative territory again.  - 4 KWH this month.

Ben might be back today or tomorrow to grease up the turbine, he didn't have the grease with him on Saturday.

Redriven is here!

Yesterday, they replaced the controller hardware in the nacelle and began wiring the new controller parts. They also replaced our yaw break that had been taken out last year.  Dave Vandermeer ( the programmer) said we are going back to code 0. This code will be a light version with just the basics. It will just do the primary functions of on, off , moving out of the wind and fault protection. When there is a fault, we will have to manually restart it. Those higher functions like restarting will come with new code releases. The code and system is still not ready to for internet  up or down load, so they will need to come back to upgrade for that function.


I told Dave that my expectations have been lowered. Last summer, I complained when the system was using a lot of power to sit there with no wind. Now, I’ll be very glad to just see it spinning. Dave said that is one of the improvements we will see right away. Now when it sits there with no wind it will go will use much less power than it did last summer. Perfect timing since we are headed into the no –wind season.


I’ll post more details later. They think they will get it running today!

Up again but only for 8 hours

We mailed back just the Nacelle card to redriven for re-programming.  It only worked for 8 hours this time, before it got another Nacelle fault.  Now we are going to wait for the new nacelle card that is coming out in about a month.  Hopefully, this one will hold the code

We are up and running again after being down for 42 days!

Now I know why most people are just happy to see it spin. I really missed looking out there and watching it go. I can enjoy windy days again instead thinking of them as missed opportunities to make power.


When Parker was here last he diagnosed it was the computer cards that had issues so we sent both the controller card in the nacelle and in the “long board” back to Redriven to be checked out / refurbished.

Unfortunately, Parker is no longer working for Redriven, but my most excellent husband spent the whole day yesterday putting the cards back in and troubleshooting wiring connectivity issues. Being a wind tech or wind smith is a really hard job, in the summer. In the winter, it is just no fun at all. Lucky for us, my husband does this type of continuity checking for his work and has all the tools and he had time to do it. I had to work and wasn’t much help at all. Now we are back up and running again! There are only a few days left in March, the best month of the year for wind. It seems the winter just won’t give up this year so maybe the wind will continue to blow too.

Results for Jan and Feb

Today is measurement day. I didn’t post results last month since I was out of town,  so this is my very sad two month report. 

From Dec 27 to Feb 27^th we made 134KWH.  Keep in mind the turbine was only running for 16 of a possible 62 days.     

No word yet from  Redirven on when they are coming back to fix it.

Thanksgiving day

Happy Thanksgiving United States readers! I’m very thankful that both Rural Wind & and Electric (Rodney and James) plus Redriven (Dave and Scott) were here for the last two days working hard to resolve the issues with our wind turbine. They replaced a cable that was 6 wire unshielded with a cable with 2 shields and 2 twisted pair cable. This cable replacement significantly reduced the noise and raised the control signal. Dave from Redriven also programed some checks (firmware 2.05) so the system will automatically reset on the over-speed error that we just started getting.

Now our wind turbine is back making power better than ever. Since they left yesterday, we have had no errors at all. Plus now at 3.75 miles per hour the meter stands still (no gain no loss). If you remember, with the older system, the meter stood still at 8 miles per hour. This means that when the wind turbine is slowly turning we will now have a net gain rather than a loss. The parasitic loss is now about 300 watts, we think it was about 600 –to 800 watts with the older control system. This should do great things for our power production.

Redriven was here this week.

Redriven was here Tuesday and Wednesday this week. They got the wind turbine running Tuesday afternoon but night we started getting contiunous nacelle faults.  The next day they came back but couldn't get the errors to stop.  They now think the wiring between the controller and the nacelle is picking up interference.  They said they would be back this coming week to work on it again. I think replacing the controller cable to the nacelle.   It kills me that we are missing all of this great wind, this would have been the best month ever.

We're off line again

The wind turbine worked for about two days.  As luck would have it no wind days.  On the third day a little wind and we got a Nacelle fault.  Resetting it got it working again for a whole day.   The next day we got a DV error (Dog Vane- I think?) and then another Nacelle fault.  We have been unable to get it started back up.  The anemometer shows no wind even when there is wind.  So now we have everything turn off and are waiting for the next fix.

Windturbine back on line

Parker came back Wednesday afternoon and work past dark getting our wind turbine running again. He put in another external power supply in the nacell. Of course since that time there has been no wind at all to test it out.  Hopefully, there will be some tomorrow.