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Vinícius C. de Moraes
Faculdade de Engenharia Elétrica, Universidade Federal de Juiz de Fora (UFJF), MG
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Igor D. Melo
Faculdade de Engenharia Elétrica, Universidade Federal de Juiz de Fora (UFJF), MG
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Jeanderson S. Mingorança
Faculdade de Engenharia Elétrica, Universidade Federal de Juiz de Fora (UFJF), MG
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Camile A. Moraes
Faculdade de Engenharia Elétrica, Universidade Federal de Juiz de Fora (UFJF), MG; Departamento de Engenharia Agrícola, Universidade Federal de Viçosa (UFV), MG
Keywords:
protection of electric power systems, power transmission systems, transmission lines, distance relay, power quality
Abstract
This paper presents the impacts evaluation of power quality disturbances through simulations carried out using MATLAB and Simulink. In this regard, a transmission line with series compensation is modeled and subjected to short-circuit in several scenarios analyzed. The performance of the parameterized protection relay with distance function, ANSI 21, as well as the power quality impacts on the system are investigated. Research related to this topic is increasingly significant, due to the high penetration of solar and wind sources into the energy system. Verification of the protection devices’ operation, when exposed to power quality disturbances, is necessary, since they lack monitoring systems capable of measuring such impacts in real-time. These disturbances can considerably affect the protection system operation, and consequently impact the electrical system as a whole, causing huge losses to network users. Industrial and commercial consumers, who need availability, quality, and reliability of energy supply to maintain their electro-intensive industrial processes are the most affected.
