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Solar Inverter Low Voltage Ride Through

Hi everyone markerbuoy here out in the woods offgrid with the second part of my simple solar installation in part 1 I mounted three solar panels on the roof of my shop and ran the wires ready to be hooked up to 12 volt batteries via a charge controller. Today I’m going to mount the charge controller fabricate a busbar and connect the batteries so they can be charged.

I bought a couple of regular large deep cycle 12 volt lead acid batteries cobbled together a bunch of parts to make a decent busbar and bought a 40 amp capacity MPPT to be a maximum power point tracking charge controller I’d be surprised my panel array ever kicked out more than 15 amps.

But based on my experience in the main cabin i will have sufficient capacity should I want to add more panels in the future. Remember, this is a modest install without too many dials knobs and whistles designed to supply power for lighting my dark shop maybe charging tool batteries via a small inverter so let’s get started.

Before we get going just a small reminder if you’re not already subscribed to my channel please click on the link when it appears and will email you when I post a new tutorial. have a look around my channel and check out the other monkey business I get up to before charging the batteries and distributing power I need to fabricate busbar.

It’s a simple device which accepts power from the load terminals of the charge controller and makes it easy to hook up various loads as the need arises bus bars are easily bought complete but I happen to have the scrap parts available which when assembled will make a very heavy duty unit that will last a lifetime.

The backing material is a chunk of three quarter inch nonconductive polyethylene, to which I will attach a couple of thick, lead plated copper strips previously drilled and tapped to allow the connection of terminal wire ends This particular charge controller can control the Load in a number of ways including low voltage disconnect.

Low voltage recovery and automatic reconnection and importantly electronic shortcircuit overload read the comments section for details on where I bought the controller there are many types available but at the moment this is the one that works for me. also considering price and excellent service from my supplier.

Now with the bus bar complete it’s time to arrange and install the various components I have chosen to park the batteries in the rafters as it were up there. The shop is frequently messy and dusty and I think there’s less chance of everything being tipped over or loaded with debris.

Prevention of Unintentional Islands in Power Systems with Distributed Resources

gt;gt; houtan moaveni: good afternoon, everyone, and thank you for joining the first new york State Interconnection Technical Working Group webinar. This is Houtan Moaveni, and I’m the deputy director of New York NYSun. I’m here today on behalf of my friends and colleagues, Jason Pause and Dave Crudele, the cochairs of the Interconnection Technical Working Group. The topic that we are going to cover today is Prevention of Unintentional Islanding in.

Power systems with distributed energy resources, but before we dive into the technical content, a few logistics items that I would like to discuss. Everyone is in listen only mode, and you can ask a question by using the QA panel on the right hand side of your screen. We will have about 45 minutes for our speaker to present, and this leaves us an approximate like 30 minutes for QA at the end of the presentation.

The webinar is being recorded, and it will be posted on the interconnection technical Working Group webpage. So with that, I would like to go ahead and introduce our speaker. Our speaker is Ben Kroposki. Ben is the director of Power Systems Engineering Center at the National Renewable Energy Lab, NREL, where he leads NREL’s research and design, planning and operation of electrical power.

System. Ben received his bachelor and master in electrical engineering from Virginia Tech, and a PhD from the Colorado School of Mines. His expertise is in design, testing, and integration of renewable and distributed power systems, and has more than 115 publications in these areas. As an IEEE Fellow, Ben was recognized for his leadership in renewable and distributed.

Energy resources integration. Today, Ben will discuss basics around unintentional islands and techniques for detecting and preventing islands. He will discuss inaudible connection standards and the testing procedures as well as new results conducted by NREL and other national labs. Finally, he will talk about the future if antiislanding protection.

So with that, i would like to turn it over to ben to kick off the presentation. Ben? gt;gt; Benjamin Kroposki: Thank you, Houtan, for the introduction, and good morning, everyone. So today, I’m going to give a presentation on prevention of unintentional islands in power systems with distributed resources, and one little additional background on myself. I was involved with the original development of IEEE 1547 as a member of the working group.

I was also the secretary for ieee 1547.1, which is the conformance test procedures, and I was also the chairman of IEEE 1547.4, which is the guide for operation and design of intentional islands with distributed resources or microgrids. So today, we’ll give a presentation for about 45 minutes, and then we’ll take questions at the end. Okay, so our presentation outline.

First, we’ll talk about various types of islands in power systems. Then we’ll move on to issues with unintentional islands, discuss a bit about the methods of protection against unintentional islands, and then move on to some of the testing procedures that are used for evaluating equipment for unintentional islanding. Then we’ll talk a little bit about the probability of unintentional islanding, and then move on to the future of antiislanding protection.

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