[RE-wrenches] Shading from Overhead Transmission Lines

[Jerry Shafer]

Just so l understand you had current not voltage where was the current
flowing to.
I have had static voltage from HV transmission lines but not induced
current while the system was off.
Jerry
Jerry
On Feb 24, 2016 12:42 PM, "Rebekah Hren" <rebekah.hren at gmail.com> wrote:

> 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 <jerrysgarage01 at gmail.com>
> 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" <Lyons at zapotecenergy.com> 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: Lyons at ZapotecEnergy.com
>>>
>>> Web: www.ZapotecEnergy.com
>>>
>>>
>>>
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