Real-Time Digital Simulation for Coordination Analysis of V/Hz AVR Limiter With Overexcitation, Overvoltage, and Underfrequency Protections of Synchronous …

FRAC Baracho, ALM Coelho… - IEEE Transactions …, 2022 - ieeexplore.ieee.org
Synchronous generators have automatic voltage regulators with limiters that are used to
prevent high or low flux in the generator by controlling the Volts/Hertz ratio. Within the …

A theoretical and practical approach for underexcitation protection and control studies of hydrogenerators in a real-time environment

FRAC Baracho, CS Pereira Filho… - IEEE Transactions …, 2018 - ieeexplore.ieee.org
The installation and settings of protection devices and excitation control systems require
experience since a failure can cause damage to the synchronous generator and negative …

A New Admittance Approach Applicable to the Coordination Between the Loss-of-Excitation Protection and the Underexcitation Limiter

F Baracho, A Coelho, C Pereira Filho… - IEEE Latin America …, 2020 - ieeexplore.ieee.org
The performance of salient-pole synchronous generators protection is of great importance
for the stability of power systems, as they are present in large hydropower plants, subject to …

A test-bed for protection studies of synchronous generators and its interaction with the underexcitation and overexcitation limiters

ALM Coelho, PM Silveira… - 2018 IEEE industry …, 2018 - ieeexplore.ieee.org
A test-bed implemented in a real time digital simulation environment is presented in this
paper to perform coordination studies between protection functions and excitation limiters of …

A conductance-susceptance approach for underexcitation protection and control studies of hydrogenerators

FRAC Baracho, ALM Coelho, S Clever… - 2018 IEEE Industry …, 2018 - ieeexplore.ieee.org
Synchronous generators protection and its controls are crucial for the reliability and stability
of power systems. Their operation is interrelated, which means that they must be …