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Question about upgrading to 3 phase
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<blockquote data-quote="GM at CA UK" data-source="post: 549580" data-attributes="member: 29506"><p>I'm no expert on how such a system is exactly implemented (I'm sure others on here could tell you) but in logging energy use in the field we have come across a couple of situations where a complete installation is running from a big "off grid" PV inverter (so no feed in), with any excess going to charge batteries, and with the incoming supply only feeding into the inverter. They are set so that the installation runs off the PV, unless there is not enough sun, in which case it then also draws power from the batteries, and if the PV and batteries are not enough, the balance is drawn from incoming mains supply. For large parts of the day they generate more from the PV than they use, which charges the batteries, and during the evening they run from the batteries, with the mains there ready if they don't have enough charge. During the peek charging months they generally use no power from the grid, and a little when its gloomier. That really depends on how big a PV array and how much storage capacity they have. Maybe you could do something like that? Or maybe you could split your installation so some of it runs from the existing single phase DNO supply and the other part is entirely off grid PV / Battery. However, as I mentioned at the start, I'm no expert in this area and I'm sure there are others in here that know all about such things.</p></blockquote><p></p>
[QUOTE="GM at CA UK, post: 549580, member: 29506"] I'm no expert on how such a system is exactly implemented (I'm sure others on here could tell you) but in logging energy use in the field we have come across a couple of situations where a complete installation is running from a big "off grid" PV inverter (so no feed in), with any excess going to charge batteries, and with the incoming supply only feeding into the inverter. They are set so that the installation runs off the PV, unless there is not enough sun, in which case it then also draws power from the batteries, and if the PV and batteries are not enough, the balance is drawn from incoming mains supply. For large parts of the day they generate more from the PV than they use, which charges the batteries, and during the evening they run from the batteries, with the mains there ready if they don't have enough charge. During the peek charging months they generally use no power from the grid, and a little when its gloomier. That really depends on how big a PV array and how much storage capacity they have. Maybe you could do something like that? Or maybe you could split your installation so some of it runs from the existing single phase DNO supply and the other part is entirely off grid PV / Battery. However, as I mentioned at the start, I'm no expert in this area and I'm sure there are others in here that know all about such things. [/QUOTE]
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Question about upgrading to 3 phase
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