<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>Underfrequency load shedding is a common technique for maintaining the stability of the power system by removing the overload in a certain part of the system after a disturbance. The purpose of underfrequency load shedding is to balance output and load when a particular event causes a significant frequency drop in the power system. In conventional underfrequency load shedding schemes, the frequency thresholds of frequency relays are constant, this way it is difficult and sometimes impossible to control the frequency in various disturbances in the system. In this paper, an adaptive underfrequency load shedding (AUFLS) algorithm that is independent of communication between relays is presented. The relays are tuned to reduce loads taking into account local parameters such as voltage and frequency to prevent the occurrence of a cascade failure that can ultimately lead to the breakdown of the entire power system. In this paper, the rate of change of frequency (ROCOF) is obtained by applying the Hilbert-Huang transformation. Numerical simulations conducted on the New England 39 bus test system in the DIgSILENT PowerFactory and MATLAB software packages confirm the effectiveness of the proposed approach.</p>
</abstract>

Underfrequency load shedding is a common technique for maintaining the stability of the power system by removing the overload in a certain part of the system after a disturbance. The purpose of underfrequency load shedding is to balance output and load when a particular event causes a significant frequency drop in the power system. In conventional underfrequency load shedding schemes, the frequency thresholds of frequency relays are constant, this way it is difficult and sometimes impossible to control the frequency in various disturbances in the system. In this paper, an adaptive underfrequency load shedding (AUFLS) algorithm that is independent of communication between relays is presented. The relays are tuned to reduce loads taking into account local parameters such as voltage and frequency to prevent the occurrence of a cascade failure that can ultimately lead to the breakdown of the entire power system. In this paper, the rate of change of frequency (ROCOF) is obtained by applying the Hilbert-Huang transformation. Numerical simulations conducted on the New England 39 bus test system in the DIgSILENT PowerFactory and MATLAB software packages confirm the effectiveness of the proposed approach.

Adaptive Underfrequency Load Shedding And Voltage Stability In The Power System

B&H Electrical Engineering

This work is licensed under the Creative Commons Attribution 4.0 International License.

{"article-title":"Adaptive Underfrequency Load Shedding And Voltage Stability In The Power System"}

Underfrequency load shedding is a common technique for maintaining the stability of the power system by removing the overload in a certain part of the system...

Adaptive Underfrequency Load Shedding And Voltage Stability In The Power System

Publié en ligne: 13 oct. 2022

Pages: 1 - 8

Reçu: 25 oct. 2021

Accepté: 28 déc. 2021

DOI: https://doi.org/10.2478/bhee-2022-0001

Mots clés
underfrequency load shedding (UFLS), voltage stability, rate of change of frequency, Hilbert-Huang transformation, power system stability, relays

© 2022 Maja Muftić Dedović et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Adaptive Underfrequency Load Shedding And Voltage Stability In The Power System

Publié en ligne: 13 oct. 2022

Pages: 1 - 8

Reçu: 25 oct. 2021

Accepté: 28 déc. 2021

DOI: https://doi.org/10.2478/bhee-2022-0001

Mots clésunderfrequency load shedding (UFLS), voltage stability, rate of change of frequency, Hilbert-Huang transformation, power system stability, relays

© 2022 Maja Muftić Dedović et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Mots clés
underfrequency load shedding (UFLS), voltage stability, rate of change of frequency, Hilbert-Huang transformation, power system stability, relays