I'd be more worried about induced current/voltage on metal/conductors in the PV array, which seems like it could cause issues with GFP devices, and possibly unsafe conditions. I worked on one large array (5 MW) where the point of interconnection was parallel to / under high voltage lines. Even when the PV system wasn't operating there was measurable current on the PV system conductors induced from the high voltage lines above. The utility nearly wouldn't let the system be allowed to interconnect, because we had trouble proving the anti-islanding was working as current was still flowing when the utility supply was disconnected (on the lower voltage not higher voltage lines). Rebekah
On Wed, Feb 24, 2016 at 4:18 PM, Jerry Shafer <[email protected]> wrote: > We have both GT and off grid in the shadow lines, because of the distance > away, diameter of the wire and also the sun have not seen any issues that > will warrent micro inverters. All that said, its a moving target and if the > wires are very close then it will be more of an issue. > Something else to ponder can you in fact install under HV transmission > lines in your area. > Jerry > On Feb 24, 2016 5:50 AM, "Paul Lyons" <[email protected]> wrote: > >> Hell RE-Wrenches – >> >> >> >> Do any of you have experience with locating ground-mounted PV systems >> under high-voltage transmission lines? We have an electric utility client >> who would like to use some of its land underneath its HV transmission lines >> to install PV. Is the shadow cast be the overhead wires significant enough >> to affect the string voltages in the array? Should we go with >> micro-inverters? >> >> >> >> Thank you, >> >> >> >> Paul Lyons, P.E. >> >> Zapotec Energy Inc. >> >> 675 Massachusetts Ave >> >> Cambridge, MA 02139-3309 >> >> Tel: 617-547-5900 ext.201 >> >> Email: [email protected] >> >> Web: www.ZapotecEnergy.com >> >> >> >> _______________________________________________ >> List sponsored by Redwood Alliance >> >> List Address: [email protected] >> >> Change listserver email address & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> List-Archive: >> http://www.mail-archive.com/[email protected]/maillist.html >> >> List rules & etiquette: >> www.re-wrenches.org/etiquette.htm >> >> Check out or update participant bios: >> www.members.re-wrenches.org >> >> >> > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: [email protected] > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/[email protected]/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > > -- Tel: 336.266.8800 NABCEP Certified Solar PV Installation Professional™ 091209-85 NC Licensed Electrical Contractor
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