topic Gas Utility Network Migration Tools in Gas and Pipeline Questions

Gas Utility Network Migration Tools

HowardCrothers — Mon, 21 May 2018 20:05:24 GMT

Version 2 of the Gas Utility Network Migration Tools are now available for download from this post.

The Gas Utility Network Migration Tools help you transform gas data from a geometric network to a utility network using FME or ArcGIS Pro with the Data Interoperability Extension. It includes a workbench, a schema mapper, tools, sample data, and documentation.

The provided workbench and schema mapper are preconfigured for the included sample source data. You will need to configure the workbench and schema mapper for your source data.

Please use this GeoNet discussion to ask questions and share your feedback.

Re: Gas Utility Network Migration Tools Preview

RobertKrisher — Fri, 01 Jun 2018 07:11:02 GMT

While the workbench either shows how or allows you to extrapolate how to do the majority of the conversion, one of the biggest items not shown is how to derive the subnetwork controllers for systems and pressure zones. This is problematic for a few reasons.

Te biggest issue is that this means that all the station regulators in your model will create three ambiguous connectivity errors (type 9, more than one rule exists). In order to resolve this error you need to properly identify associate the inlet and outlet terminals with their corresponding mains, typically inferred by a pressure differential between the mains on a regulator but in cases where there are two (or more) regulators working in a station only the low-side regulators will have a pressure differential. Once the inlet/outlet associations for each regulator have been defined each downstream regulator must be assigned a subnetwork named based off of all the other regulators it is connected with for the pressure system.

I've typically relied on python scripts to do this after-the-fact, but given that without the terminal associations most networks won't build I would have expected to see it included in the workbench.

Re: Gas Utility Network Migration Tools Preview

HowardCrothers — Fri, 01 Jun 2018 13:36:41 GMT

Robert Krisher‌ Thank you for the feedback, we will look into whether we can automate that further.

Re: Gas Utility Network Migration Tools Preview

RobertKrisher — Tue, 12 Jun 2018 13:29:54 GMT

Excellent! Since you're already using a topology builder that gets you half the way there, just find all the regulators with a pressure differential between their high side and low side and set terminals accordingly. This solution works for simple regulator stations with a single regulator, but for situations where there are multiple regulators working in parallel and/or series the logic gets increasingly complicated.