They may well be willing to pay for more expensive equipment because they
can make money from it. large industrial electricity users pay for the VAs
that they use. Even though they are not energy the utility has to
supply them.
The utility charges for this service.
If a solar farm also included a battery bank then they would be able to
supply
VAs along with Watts just like a conventional generator. With
batteries solar
farms could contribute to grid stability just like other suppliers.
Pete.
On 2/10/2017 7:43 AM, David wrote:
On Thu, 09 Feb 2017 23:39:24 +0000, you wrote:
It is harder than it sounds.
Small solar inverters are the best, they an regulate down at milliseconds
notice, and many jurisdictions impose asymetric frequency bands on
them to exploit this.
Big inverters, no matter what you put behind them, get quite a bit
more expensive if they are designed to provide "non-VA" power,
because you suddenly have to run the current both ways in the same
half-cycle.
Nobody wants to pay for that voluntarily, and nobody are particular
keen to cause the first explosion/fire while they get the control-law
debugged.
Imagine how they will scream if they have to pay for fields of big
synchronous motors to be connected.
https://en.wikipedia.org/wiki/Synchronous_condenser
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