Talk:Spec:central dg control

Andy: The algorithms presented are sound and the similar to what we have developed previously in non-open source environments. It's not mentioned but I think it should be stated that the control point for the control modes proposed must be upstream from all available dg resources. It wasn't clear but am I correct in saying that the centralized controller will tell each inverter under it's control how much it P and Q it needs to provide to the grid correct? For the battery SOC control operations I can suggest 2 methods of control. Provide a schedule of set times where the batteries are allowed to discharge and charge. The Second way would be to incorporate the charging and discharging of the batteries into each control mode individually where possible.

Kevin: It looks like a good framework, but there are some details that should be cleaned up.

Comments/questions:
 * 1) This will only apply to inverters, so no central control of diesel generators?
 * 2) This should probably have some way to include demand response, if it does not already.
 * 3) What is driving the development of the initial two control modes? I can see this effectively being a microgrid controller.
 * 4) Constant Power factor Control:
 * 5) Will it be possible to control power factor elsewhere?
 * 6) Will there be a check to ensure that the power factor is not negatively impacted locally to achieve a desired feeder value. (Think of the VVO problems we have seen)
 * 7) Will there be a check of local voltage limits. Similar to capacitors in “VARVOLT” control.
 * 8) Peak Shaving Control Mode:
 * 9) Peak shaving should be apparent power not just real power otherwise you are not achieving minimum currents. Or at least make this an option.
 * 10) Peak shaving should consider reactive on some level.