Relay used as grid dump load??

Discussion in 'Connecting to the Grid' started by bluejay, Aug 10, 2011.

  1. bluejay

    bluejay WindyNation Engineer

    Have any of you Elerctric gurus came up with a relay that would be powered by a small dc adapter that plugs directly into the wall that would trip a heavy solinoid to a dump..??

    I have burn up my last coleman controller(second time) in 65 mile and hour winds(bad storm last week,just draggin my feet on posting... I was trying to have a 30v trip but switched over from large 80amphour agms to small (7amph) batteries due to higher efficiency into the grid. They dont drain deep and when it switches back on sometimes its slamming on with 35v and about 30 amps..

    I want to just run a large bank of 22 60 gts because I have never seen more than 50 volts out of the the thick ass stator wire :)...Under normal higher winds 15-20 mph everything feeds smooth..Just want some way to slam high power(putting up another) into a large dump when the grid turns off only..

    Please throw out some ideas on how to build the grid sensing relay and solinoide please...

    I am home enough that i could just wire all dc to a 60amp breaker for each turbine to feed the bank.Flip it over to feed the bank but that also gives it some time to speed up. I propbably am over worring from all my disasters of no furling crashes, the windy frame has furled in extreme winds but does put out mega amps (added extra weight to need higher windspeed to furl)
    If we are having that bad of weather to worry about overspeed you can bet I am home...

    Just a side fyi,,I am putting 1 1/2 steel pipe ubolted to the legs for extreme rigideness I put 20 ft bracing on one leg today and it made a huge difference put 3 legs of bracing And into the concrete,I will be ready to watch blades shatter in a tornado while the towers stay:D up ..
  2. leamywind1

    leamywind1 WindyNation Engineer

    Hey Blue i think i have what you are looking for.
    Go back and look at my system and also look under wiring methods. I have a contactor system that shuts off the A/C power and sends the D/C powr to a dump load if the grid fails, if that is what you are looking for. All mechanical no electronics.
    Hope this helps.
  3. bluejay

    bluejay WindyNation Engineer

    Damn professional I tell you :eek:..It would be cool to see that big of a array slowly tilt flat and end up on the other side to be high efficiency instead of about 4 hours peak output,,When you get some time throw me together a video of how the turbine diversion that is grid based is hooked and the parts I need to buy....Some effort on your part but I would be so grateful :D
  4. leamywind1

    leamywind1 WindyNation Engineer

    LOL,Yes, i agree on the array but money talks and the customer did not have enough to get trackers.
    That system does have a manaul tilt but i dought he will do that. You have to remember people have all kinds of reasons for getting systems, some want what ever they can get out of them, and some want it all. All of the customers have a commnon goal but all have a twist to why, how and of course their budget.

    As far as the contactor no problem. Copy and paste my drawing, look it over and PM me.
    I would be glad to help. Hope yor turbine is doing well.
  5. bluejay

    bluejay WindyNation Engineer

  6. bluejay

    bluejay WindyNation Engineer

    I have figured the easiest way for that rare chance that there would be a lenthy time from grid going down and me switching over to all the resisitors and lights then a 54 volt bank should be built(48v+6v) and if the turbine are even capable of hitting that high of volts before furling and slowing back in would be drained from sitting and never getting charged...

    I have fried a ensupra with it not on and going over the 28 v so I answered my own question after recalling that...That 60 volt is my redline :):D now alot of money rides on it....

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