IEEE PES Task Force on Benchmark Systems for Stability
Controls
Report on the 68-Bus, 16-Machine, 5-Area System
Version 3.3- 3
rd
Dec, 2013
Abhinav Kumar Singh; and Bikash C. Pal
The present report refers to a small-signal stability study carried over the 68-Bus, 16-Machine, 5-Area Sys-
tem and validated on a widely known software package: MATLAB-Simulink (ver. 2012b). The 68-bus
system is a reduced order equivalent of the inter-connected New England test system (NETS) and New
York power system (NYPS), with five geographical regions out of which NETS and NYPS are represented
by a group of generators whereas, the power import from each of the three other neighboring areas are ap-
proximated by equivalent generator models, as shown in Figure 1. This report has the objective to show
how the simulation of this system must be done using MATLAB in order to get results that are comparable
(and exhibit a good match with respect to the electromechanical modes) with the ones obtained using other
commercial software packages and presented on the PES Task Force website on Benchmark Systems
for
Stability Controls [1]. To facilitate the comprehension, this report is divided into the following sections
and in each section the simulation methods are explained, and the results are shown:
1. Load flow and calculation of initial conditions.
2. Small-signal stability assessment using eigenvalues.
3. Non-linear simulation of the system model using Simulink
Figure 1- Line Diagram of the 68-bus system
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NETS
NYPS
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1
