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- Title
Frequency response analysis under faults in weak power systems.
- Authors
Arcia, Marino Godoy; Sánchez, Zaid García; Herrera, Hernán Hernández; González-Cueto Cruz, José Antonio; Silva-Ortega, Jorge Iván; Sánchez, Gustavo Crespo
- Abstract
The renewable energy sources (RESs) projects are solutions with environmental benefits that are changing the traditional power system operation and concept. Transient stability analysis has opened new research trends to guarantee a secure operation high penetration. Problems such as frequency fluctuations, decoupling between generator angular speed, network frequency fluctuation and kinetic energy storing absence are the main non-conventional RESs penetration in power systems. This paper analyzes short-circuit influence on frequency response, focusing on weak distribution networks and isolated, to demonstrate relevance in frequency stability. A study case considered a generation outage and a load input to analyze frequency response. The paper compares frequency response during a generation outage with a short-circuit occurrence. In addition, modular value and angle generator terminal voltage affectation by electric arc and network ratio R⁄X, failure type influence in power delivered behavior, considering fault location, arc resistance and load. The arc resistance is defined as an added resistance that appears during failure and influences voltage modulus and angle value results showing that intermittent nonconventional RES participation can lead to frequency fluctuations. Results showed that arc resistance, type of failure, location and loadability determine the influence of frequency response factors in weak power systems.
- Subjects
RENEWABLE energy sources; ELECTRIC arc; ELECTRIC networks; FAULT location (Engineering); ELECTRIC power system faults; FREQUENCY stability; SYNCHRONOUS generators; ELECTRIC fault location
- Publication
International Journal of Electrical & Computer Engineering (2088-8708), 2022, Vol 12, Issue 2, p1077
- ISSN
2088-8708
- Publication type
Article
- DOI
10.11591/ijece.v12i2.pp1077-1088