I am currently working on a project,volt-var controlling for distributed energy resources (mainly for photovoltaic systems). Even though I have an algorithm to work on, there is no way to control the active and reactive power of a PV system. I hope for an answer. Thank you in advance.
1. Matlab (Simulink)
2. PSCAD are the best tools for the simulation
a)A flexible, powerful and relatively cheap simulation program.
b) Useful in the analysis of steady-state system response )
3.HOMER ( modeling software, used to optimize and simplify microgrids in grid-connected and islanded modes)
This is one of the great advantages of a DC system, over AC. your PV source is DC. your loads are probably DC, very near to the power input. If you will match with one of the DC transformer topologies, [I prefer Multi Synchronous Bridge, [MSB] over Dual Active Bridge [DAB]] then there is no reactive power to worry about.
Here is one more vote for Edison over Westinghouse - a bit late I realize :-)
With a DC system inverter(s) are not necessary, thus a failure link is avoided. Loads are inherently DC. From Tesla, AC serves the purpose of low loss transport over long distances, which is essentially irrelevant for small (e.g. < 10KW) local PV systems. Inverters also have loss that is avoided with use of DC, but that is becoming less of an issue as inverters become more efficient.
If interested, Joe Prusa and I did an ASME paper "Performance of a Small Network of Grid Interactive, Residential Solar Photovoltaic Systems" (here on RG if you care to ponder) that examines the output of several such systems as a function of environment. Too, if interested, you can take a look at the real-time production of a couple of my systems with a link provided there. These systems supply DC for most of the internal loads, but also sell AC to the grid. That link and more explanation is in our Solar Monitoring Project here on RG.
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