Load shedding &amp;#x2014; Coordination between the Portuguese transmission grid and the Distribution grid with minimization of loss of Distributed Generation

Fernandes, Ricardo V.; Almeida, Susana A. B. de; Barbosa, F. P. Maciel; Pestana, Rui

doi:10.1109/ptc.2009.5282171

Cited by 6 publications

(3 citation statements)

References 9 publications

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“…Generally these feeders are chosen based on types of loads connected to the feeders, network topology, equal distribution of loads to be shed etc. [34]. Although this scheme is very simple and inexpensive to implement, it is suboptimal.…”

Section: A Load Shedding Algorithm Using Static Relay (Lsa-static)mentioning

confidence: 99%

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Improved Load-Shedding Scheme Considering Distributed Generation

Das

Nitsas

Altin

et al. 2017

IEEE Trans. Power Delivery

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Abstract-With high penetration of distributed generation (DG), the conventional under-frequency load shedding (UFLS) face many challenges and may not perform as expected. This article proposes new UFLS schemes, which are designed to overcome the shortcomings of traditional load shedding scheme. These schemes utilize directional relays, power flow through feeders, wind and PV measurements to optimally select the feeders to be disconnected during load shedding such that DG disconnection is minimized while disconnecting required amount of consumption. These different UFLS schemes are compared in terms of frequency response, amount of consumption and DG disconnected during load shedding.

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Section: A Load Shedding Algorithm Using Static Relay (Lsa-static)mentioning

confidence: 99%

“…• Type of loads connected to the feeder • Amount of generation connected to the feeder • Amount of consumption connected to the feeder Generally, scores or weighage are given by DSOs based on their experiences [34]. In our studies, equal priorities are assumed for all the feeders (except industrial load) based on load type.…”

Section: D) Constraintsmentioning

confidence: 99%

Improved Load-Shedding Scheme Considering Distributed Generation

Das

Nitsas

Altin

et al. 2017

IEEE Trans. Power Delivery

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“…Although there are a vast number of methodologies to implement the traditional UFLS scheme that propose several sets of parameters depending on the country/company utility requirements [8][9][10][11], recent methods have focused on solving the problem of calculating the UFR parameters using computational algorithms. Authors of [12] used the genetic algorithm to minimise the LS and the dynamic frequency deviation of the power system.…”

Section: Introductionmentioning

confidence: 99%

Optimal Under-Frequency Load Shedding Setting at Altai-Uliastai Regional Power System, Mongolia

et al. 2020

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The Altai-Uliastai regional power system (AURPS) is a regional power system radially interconnected to the power system of Mongolia. The 110 kV interconnection is exceptionally long and susceptible to frequent trips because of weather conditions. The load-rich and low-inertia AURPS must be islanded during interconnection outages, and the under-frequency load shedding (UFLS) scheme must act to ensure secure operation. Traditional UFLS over-sheds local demand, negatively affecting the local population, especially during the cold Mongolian winter season. This research paper proposes a novel methodology to optimally calculate the settings of the UFLS scheme, where each parameter of the scheme is individually adjusted to minimise the total amount of disconnected load. This paper presents a computationally efficient methodology that is illustrated in a specially created co-simulation environment (DIgSILENT® PowerFactoryTM + Python). The results demonstrate an outstanding performance of the proposed approach when compared with the traditional one.

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