42-Bus System (IEEE Std. 399-1997)

I. Introduction:

\(\bullet\) This 42-bus test system is also known as the IEEE Std. 399-1997 system.
\(\bullet\) It is considered one of the largest optimal relay coordination (ORC) test systems available in the literature.
\(\bullet\) This test system is protected by a mixture of 97 directional and non-directional OCRs.
\(\bullet\) That is, the dimension is 194 (i.e., 97 variables of type \(TMS\) and 97 variables of type \(PS\)) when only one unified time-current characteristic curve (TCCC) is used for all the relays.
\(\bullet\) If multiple TCCCs are used, then the dimension increases to 485 variables.
\(\bullet\) Also, if the double primary relay strategy (DPRS) is considered, then the dimension increases for both one unified TCCC and multiple TCCCs. Please, refer to [2] and [3] for more information about DPRS and how to model this special high-dimensional optimization problem.
\(\bullet\) For the extreme case of DPRS (i.e., 194 relays: 97 main-1 relays and 97 main-2 relays), the dimension increases from being 194 to 388 variables if only one unified TCCC is used for all the relays.
\(\bullet\) For multiple TCCCs, the dimension increases from being 485 to 970 variables if the extreme case of DPRS is considered.
\(\bullet\) The standard ANSI CT-rations are listed in Table 1 (click to enlarge it).
\(\bullet\) The overload currents and CT-ratios of all the primary relay sets are tabulated in Table 2 (click to enlarge it).
\(\bullet\) The three-phase (3\(\phi\)) short-circuit analysis is carried out using DIgSILENT PowerFactory.
\(\bullet\) The ANSI standard calculation is applied here with zero fault impedance.
\(\bullet\) The short-circuit currents seen by all the primary/backup (P/B) relay sets are tabulated in Table 3 (click to enlarge it).
\(\bullet\) The information listed below is taken from [1] and [2].
 

II. Single-Line Diagram:

\(\bullet\) This old single-line diagram is taken from the IEEE Brown Book; IEEE Std 399-1997, IEEE Recommended Practice for Industrial and Commercial Power Systems Analysis, IEEE, New York, 1998:

\(\bullet\) The following new single-line diagram, drawn by Ali R. Al-Roomi [1], shows the network configuration and relay numbering used in all the studies cited below:

III. Files:

\(\bullet\) Standard ANSI CT-Ratios (MS Excel Format) [Download]
\(\bullet\) Overload currents and CT-ratios (MS Excel Format) [Download]
\(\bullet\) Three-phase fault currents (MS Excel Format) [Download]

IV. Citation Policy:

If you publish material based on databases obtained from this repository, then, in your acknowledgments, please note the assistance you received by using this repository. This will help others to obtain the same data sets and replicate your experiments. We suggest the following pseudo-APA reference format for referring to this repository:

Ali R. Al-Roomi (2015). Optimal Relay Coordination Test Systems Repository [https://www.al-roomi.org/coordination]. Halifax, Nova Scotia, Canada: Dalhousie University, Electrical and Computer Engineering.

Here is a BiBTeX citation as well:

@MISC{Al-Roomi2015,
author = {Ali R. Al-Roomi},
title = {{Optimal Relay Coordination Test Systems Repository}},
year = {2015},
address = {Halifax, Nova Scotia, Canada},
institution = {Dalhousie University, Electrical and Computer Engineering},
url = {https://www.al-roomi.org/coordination}
}

V. References:

[1] Ali R. Al-Roomi. Optimal Coordination of Power Protective Devices with Illustrative Examples. Hoboken, New Jersey: Wiley-IEEE Press, 2022.
[2] Ali R. Al-Roomi, "Improved Power System Realization and Integration," PhD Dissertation, Dalhousie University, Halifax, Nova Scotia, Canada, April, 2020. url: http://hdl.handle.net/10222/78503
[3] A. R. Al-Roomi and M. E. El-Hawary, "Optimal Coordination of Double Primary Directional Overcurrent Relays Using a New Combinational BBO/DE Algorithm," IEEE Canadian Journal of Electrical and Computer Engineering, vol. 42, no. 3, pp. 135-147, Summer 2019.
[4] A. R. Al-Roomi and M. E. El-Hawary, "Optimal Coordination of Directional Overcurrent Relays Using Hybrid BBO/DE Algorithm and Considering Double Primary Relays Strategy," in 2016 IEEE Electrical Power and Energy Conference (EPEC), Ottawa, ON, 2016, pp. 1-7, 2016.
[5] F. A. Albasri, A. R. Alroomi, and J. H. Talaq, "Optimal Coordination of Directional Overcurrent Relays Using Biogeography-Based Optimization Algorithms," IEEE Transactions on Power Delivery, vol. 30, no. 4, pp. 903–911, 2015.