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The Working Group began as an informal Task Force with four radial test feeders
that were originally presented at the 1991 Winter Power Meeting. A fifth
test feeder was added to focus on transformer connections. The paper
was presented at
the 2001 Winter Power Meeting and should be published in the Transactions. You can find several
papers on IEEE Xplore from panel sessions at various IEEE PES conferences up through 2009 where results for the test feeders were compared. Search for papers by Kersting, Dugan, and Carneiro, Jr., as well as others. At the 2009 IEEE PES PSCE a roadmap was described for the future test cases the WG is developing. Two new test cases were introduced at the 2010 T&D Conference in New Orleans and are now posted. The original test feeder
paper and data are provided below. The zipped data files require
Microsoft Word and Microsoft Excel to read them.
- Original Test Feeder Paper (PDF)
- Line and Cable Data (XLS)
- 4-Bus Test Feeder Cases:
These test the capability of a program to represent transformers of various configurations,
full three phase lines, and unbalanced loads. Since the problems are so small, very close agreement with the test feeder results is expected.
A good match would have an error less than 0.05%.
- Standard 4-bus Cases
- 4-wire Delta Cases
- Other Test Feeder Cases:
- 13-bus Feeder (XLS and DOC)
- 34-bus Feeder (XLS and DOC)
17 Sept 2010: Error regarding branch 858-864 corrected
- 37-bus Feeder (XLS and DOC)
- 123-bus Feeder (XLS and DOC)
15 Sept 2010: Node 49, Phase C load changed from 25 kvar to 20 kvar.
16 Sept 2010: Matrices for Config 2 and 4 corrected.
- Additional Input Files
04 Jan 2012: Test feeders in RDAP text format. Provided by Bill Kersting.
- Test Feeder Cases Added 2010:
- Comprehensive Test Feeder. This tests the capability of a program to represent a wide variety
of components in one circuit.
- 8500-Node Test Feeder. Will your algorithm scale up to large problems? Try it on this test feeder. 2500 primary (MV) buses, 4800 total buses including secondaries (LV) and loads. 1-, 2-, 3-phase and split-phase circuits yielding over 8500 total node points.
- Neutral-Earth-Voltage (NEV) Test Feeder. This tests the capability of a program to represent very detailed models of a distribution system. Based on a real system, it contains among other things a segment of line with 4 circuits sharing a common neutral. Connections to earth must be modeled.
- Additional Test Cases:
The following are working group suggestions for open-source feeder models. These models are not designed to stress powerflow solving algorithms (as the radial test feeders were originally designed to do), but rather as representative feeders for researchers to use in case studies. Links to the models are provided by the working group, but while the models have been validated by members of the working group, the group itself has not validated them.
- EPRI Test Circuits. These models were designed as part of EPRI's Green Circuit project database. The models have been sanitized for public consumption, and are available for public use. The models are representative of actual small-, medium-, and large-circuits from various utilities. These models are in OpenDSS format. Descriptions of each feeder are available in the Readme.txt.
- Taxonomy of Prototypical Feeders. These models were created as part of a PNNL project to develop a nationally representative set of radial distribution feeders. The models have been sanitized for public consumption, and are available for public use. These models represent 24 actual utility feeders from five different climate regions. Additional resources are available for populating the models with representative loads and other technologies in the GridLAB-D format. Descriptions of each feeder are available in the Taxonomy_Feeder_Development.pdf.
This information is subject to change, even after publication. It is also
copyright by the IEEE and may not be
re-distributed under any circumstances.
Please report any
comments or problems to one of the following:
Bill Kersting
Roger Dugan
Sandoval Carneiro, Jr..
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