Simplified Event-Based Load Shedding Scheme for Frequency Stability in an Isolated Power System With High Renewable Penetration. El Hierro: A Case Study

Sarasúa, José Ignacio; Pérez‐Díaz, Juan I.; Martínez‐Lucas, Guillermo; Fernández-Muñoz, Daniel

doi:10.3389/fenrg.2021.698081

Cited by 4 publications

(2 citation statements)

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“…In [16], a probabilistic method was developed to design traditional multi-stage UFLS schemes considering system uncertainties such as generation outages, hourly load, wind speed, and frequency regulation provided by wind turbines. On the other hand, [40] proposes the use of an UFLS method…”

Section: A Traditional Uflsmentioning

confidence: 99%

UFLS and Smart Load for Frequency Regulation in Electrical Power System: A Review

Bustamante,

gonzález,

López

et al. 2023

IEEE Access

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The frequency of an electrical power system can be interpreted as an indicator of the equilibrium between generation and demand. Under fault conditions where this balance is disrupted, the Under-Frequency Load Shedding scheme is typically the ultimate resource employed to prevent the frequency from dropping to undesirable thresholds that could lead to a blackout. Smart loads have the capability to dynamically adjust their consumption in response to frequency variations, which has the potential to enhance frequency regulation and mitigate the need for abrupt load disconnection through the Under-Frequency Load Shedding scheme. The objective of this paper is to present a literature review of Under-Frequency Load Shedding schemes, an innovative approach to their classifications, and the introduction of a new category within these schemes that incorporates smart loads. Additionally, an overview of smart loads is included to be potentially employed in the design of new schemes and contribute to a shift in the operation philosophy, considering that the primary mission of electric power systems is to provide energy to loads rather than disconnecting them. INDEX TERMSUnder frequency load shedding (UFLS), Smart Loads, Frequency control, Inverter based load (IBL), Converter based load, Frequency response, Frequency regulation.

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Section: A Traditional Uflsmentioning

confidence: 99%

UFLS and Smart Load for Frequency Regulation in Electrical Power System: A Review

Bustamante,

gonzález,

López

et al. 2023

IEEE Access

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“…However, to date, the wind-hydropower plant of El Hierro island has not achieved a continuous 100% supply of load demand [2]. Notwithstanding, it has been able to supply demand for several hundred hours at the cost of load shedding [6,7]. Another negative effect is an increase in the annual [8] and levelized [9] costs of energy in El Hierro's power system.…”

Section: Introductionmentioning

confidence: 99%

Increasing Demand Covered by Renewable Energy in El Hierro Island

Briongos,

Platero Gaona,

Sánchez-Fernández

2023

Sustainability

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The power system of the El Hierro island comprises a wind farm, a pumped storage hydropower plant and a diesel power plant. Its operational history shows that the renewable energy participation in the energy mix is approximately 50%. In order to increase this participation, the installation of residential photovoltaic generation and battery storage has been considered. In this paper, the operation of the whole system is analyzed by simulation. Simulations consider historical data of electric supply and demand in addition to meteorological data to obtain the wind and solar power production. The simulation tool has been tuned to successfully reproduce past system performance. From the simulations, the effect of adding new renewable generation and storage has been assessed. Also, the effect of a different operation strategy has been analyzed. From the results of these simulations, adding batteries has a negligible effect in increasing renewable energy participation. By contrast, adding solar power provides an increase in renewable energy participation. However, eliminating the requirement of 50% of synchronous generation has the largest effect on increasing renewable energy participation in the energy mix.

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