Thread
:
Sub Panel neutral bonding
View Single Post
#
56
Posted to alt.home.repair
Clare Snyder
external usenet poster
Posts: 4,564
Sub Panel neutral bonding
On Wed, 12 Jun 2019 10:31:06 -0700 (PDT),
wrote:
I found this that explains a lot. We're on the right track of thinking
about what happens and that it's kind of a paradox as to how to detect
the loss of the "grid". They call this problem "islanding". This
talks about the ways they detect it, it's complicated and even includes
active action by inverters to deliberately try to destabilize the
grid so that it goes off kilter and all the other inverters can more
quickly detect it. It looks like they use voltage changes, freq changes
and power factor changes as possible parts of the algorithms and
that it's not a trivial problem. I think this gear is more for a larger
commercial array, but the same principles should apply to all inverters.
https://www.solectria.com/blog/anti-...-pv-inverters/
that is interesting
it is also what makes the frustrating situation for people that spent a lot of money for a solar system, and they still have no electricity when the grid is down, even when the sun is out.
m
Which is why lolar grid-tie, to me, is just a scam - particularly in
Ontario where thr OPG paid 3 times as much for solar power than thay
sold it for - - -
Reply With Quote
Clare Snyder
View Public Profile
Find all posts by Clare Snyder