Hi,
thank you guys for the great project site. Anyone have already build an real 3-phase Power Grid Analizer something like the following product? http://www.esis.com.au/products/data-loggers/power-analysers/CyberVisuel...
Is it possible with the OpenEnergyMoinitor hadware emonTx to measure three currents and three voltage signals? I want to measure the quality of small off-grid systems feeded by diesel gensets between 50 kW and 500 kW. Anyone have some experience o already did something like this.
Kind regards
Timo
Re: 3 Phase Power Grid Analizer
I think your best starting point for this would be MartinR's Full-fat 3-phase Monitor. The sketches that go with that hardware configuration don't use Martin's PLL, so they don't measure frequency, but I think it should not be too hard to take the I2C from the original and merge it with Martin's PLL sketch, which will give you the numbers you want (including frequency). You obviously won't want the energy diversion feature, which can easily be taken out to leave plenty of time for the communication between the 3 modules.
Alternatively, you could add 2 further voltage inputs to an emonTx V2, and use a modified PLL sketch, though the processor workload could be a problem.