WSEAS Transactions on Power Systems
Print ISSN: 1790-5060, E-ISSN: 2224-350X
Volume 19, 2024
Transient Stability Analysis of the Ecuadorian Electrical System: Case of the Southern Segment
Authors: , , ,
Abstract: The study aims to identify and assess the risks related to possible disturbances and contingencies
within the National Interconnected System (SNI). Technical aspects are analyzed to determine the system’s
capacity to recover quickly from such events and maintain the continuity of power supply in a safe manner.
For this purpose, an SNI network, composed of generators, transformers, transmission lines and loads, has been
chosen using data from institutions of the Ecuadorian electricity sector. The study followed a progression that
encompassed data collection, power network modeling, model verification, study scenarios, transient stability
simulations and analysis of results. Three cases were studied: steady state simulation, three-phase fault in the
transmission line between node 1 and 11, and opening of the Termogas Machala Generator. The results showed
that the lines connecting the Milagro 230 kV bus and CNEL Guayas - The Ríos are at 83.5% of their total load,
causing congestion and a low voltage level of 0.9057 pu, close to the lower limit. At node 8 (CNEL The Oro),
the voltage level is 0.95443 pu, adequate for the load supplied. Except at node 12 (Peru generator), the variations
of P and Q, as well as voltage and angle, stabilize quickly at all nodes. At node 12, these variables show greater
variation and take longer to stabilize.
Search Articles
Pages: 360-373
DOI: 10.37394/232016.2024.19.31