[RE-wrenches] Inverter Ramp times

[Brian Mehalic]

We've been using a lot of AE inverters...here's the adjustable ramp rate
spec for their 500NX 1kV:

"100 kW/sec maximum; adjustable at 0.1% increments

AC Power Ramp: This parameter sets the rate of change in output power in %
of max power/second"

Cheers,
Brian



Brian Mehalic
NABCEP Certified Solar PV Installation Professional™ R031508-59
IREC ISPQ Certified Affiliated Instructor/PV US-0132

PV Curriculum Developer and Instructor
Solar Energy International
http://www.solarenergy.org


On Mon, Apr 8, 2013 at 2:05 PM, Ray Walters <ray at solarray.com> wrote:

> Fellow Wrenches;
>
> I am consulting on a larger project out of country, and the utility is (as
> usual) concerned with disturbances to the grid from the variations in solar
> output.  I know that most of the latest utility scale inverters have some
> ability to control the rate that power ramps up and down, but what is the
> time scale?  Is it milliseconds, seconds, a minute?
> Also, they are hankering for some type of storage, so beyond the inverter
> controls, what are some of the available short term storage strategies (2
> to 4 hr) these days?  I've heard of several prototype large battery banks
> (and fires?)....
> Anyone on the list have experience with these?
>
> As always: thanks in advance for sharing your expertise,
>
> --
> R.Ray Walters
> CTO, Solarray, Inc
> Nabcep Certified PV Installer,
> Licensed Master Electrician
> Solar Design Engineer
> 303 505-8760
>
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