Welcome to Let's explore TGI! Over this series of posts, I'll be going over a few of our key features, showing off how they work and what they do. 

With the release of TGI 2.6, there's a plethora of new tools to explore and master. Let's start with the very first step in any loss reduction project: segmenting the grid.


Aren't there a few steps to go through before I can actually segment my grid?

That's a great question. All projects require a data ingestion phase during which the quality of the data is validated. Faulty data is repaired during that stage. However, due to the very project-specific nature of that step, it's best to skip it here so our readers won't die of boredom. It's also dependent on the quality and nature of the data available, something that varies wildly between utilities; an example here would only be so useful.


One more question: is TGI really the full name of the software?

It's not, bold text. The real name of TGI is


Segmenting the grid with TGI

Logging in to TGI, I'm presented with a series of screens. They'll come in handy later in this series; for now, I'm headed to the segmentations screen.

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There are a few things of interest here. Let's break down the screen:

  1. The navigation menu is dropped down here, showing me I'm on the segmentations screen. I can use it to go back and forth between menus.
  2. This is my ingested grid. On this screen I can toggle visuals on and off, and choose to display only certain parts of it. The different colors represent the phase of the lines. I'm able to use this map to make sure my grid was ingested correctly, and to spot any errors should there be inaccuracies in my GIS data.
  3. The top bar allows me to look for a certain grid element, consumer, etc. Next to my search bar, I also have the activity log (more on this later) and my login information.
  4. Here I can see all my segmentations. In this example, I have 3 published segmentations (accessible to work on) and one still in the works. Once I have created my new segmentation, it will display here and will be available.

Can I customize what I'm seeing here?

Yes. The information available for each segmentation can be customized depending on your needs. Such customization is done on a per-project basis by our team.


Let's create a new segmentation. Clicking the the beckoning "Create Segmentation" button opens up this window:

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The first few fields work exactly how you expect them to; let's name our segmentation seg_1_Demo. I will select North Central Zone as my grid to segment (the grid I was looking at earlier) and will enter a short description for the purpose of this demo.


Can I write anything to those fields?

Yes, but most users will insert information useful for themselves and their teams here, such as segmentation date (which will also display next to the name in TGI), person responsible for segmenting, segmentation criterias, etc). The description field has no character limit, so it's a great spot in which to insert more information about the segmentation, or maybe the Next Great American Novel.


The bottom part of this window is where it gets real interesting:

This is where the magic happens. I can now build a set of rules that will tell TGI how I would like my grid to be segmented. The type menu gives me some options:


Is that it? Only 4 options? 

We found that those options were the most commonly requested ones, so they come with TGI by default. We add in utility-specific options on a per-project basis, depending on the business needs of the users. We have a in-house team that engages in discussion with the users, determines what segmentation parameters they require, and add them in. Anything can be a segmentation parameter.


Even the distribution of Pinus Resinosa, my favorite tree? 

Even that.


For this particular segmentation, I know that my team cares about two things: having relatively small segments that are easy to address, and keeping the number of transformers in one segment down, making it easy for a small crew to deal with. We landed on segments with around 150 customers and about 25 transformers. Since they're both equally important to my segmentation, I will give them both a weight of 50%. I'm also allowing underground and ambiguous placements (an ambiguous placement means that power might flow one way or the other; it's very useful in scenarios involving micro-generation). Let's fill out the description with some random text, and...

And here is what it looks like now:

To initiate the segmentation, let's click Create Segmentation. Depending on the size of my grid, the segmentation might take a few minutes; keep track of progress using the activity monitor. 

Once it's done, I can access my segmentation from the same screen as before. Voila!

So, what do the colors mean? What am I looking at? How can I know if my segmentation went well, or if I like what I got? 

Next time, we'll answer most of those questions and more! Stay tuned.