power quality problems [RE-wrenches]

[Todd Cory, Mt. Shasta Energy Services]

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This brings up a question I have long held, namely at what percentage of 
renewables being added to an electrical grid, will the ability of the 
utility to regulate the grid become ineffective? This is probably what 
is going on with the scenario in Hawaii.

Todd

Marco Mangelsdorf wrote:

>We appear to be having power quality issues with our local utility.  I've
>replaced the grid-tie 4 kW inverter twice now and my customer is still
>seeing the bugger trip off-line frequently during the day.  There happens to
>be an 11 MW windfarm not more than 10 miles from the site and I know that
>frequency drift is an issue, so I have widened the frequency window of the
>inverter (with the utility's knowledge and approval).  
>  
>


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