Evaluation of PV hosting capacities of distribution grids with utilisation of solar roof potential analyses

Ebe, Falko; Idlbi, Basem; Morris, Jeromie; Heilscher, Gerd; Meier, Florian

doi:10.1049/oap-cired.2017.0848

Cited by 14 publications

(8 citation statements)

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“…The increased RPF increases the transformer operating load beyond full load conditions [23]. Reference [16] obtained similar results for impact studies in the MV/LV substation transformers.…”

Section: Transformer Kva Loadingmentioning

confidence: 53%

“…On the other hand, high-level penetration challenges include power losses and problems with protection equipment [12,13]. Similarly, in high PV penetration networks, the development of reverse power flow (RPF), which can cause transformer overload, has been reported to increase network load, overvoltage, and losses [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

“…In their study of solar roof potential assessments, Ref. [16] used a deterministic approach to evaluate the maximum and minimum PV penetration levels in a medium voltage feeder in Ulm, Germany. To evaluate the minimum penetration level, RPF is used as a constraint for overloading the MV/LV transformers in the investigated feeders.…”

Section: Introductionmentioning

confidence: 99%

“…Most of the investigated cases of high PV penetration mainly focus on feeder representative metrics due to reverse power flow [2,30,35]. For instance, in [16] an overall system analysis due to PV penetration is carried out on the MV network. Certain studies also focus on distribution transformer constraints and strategies used to determine maximum PV penetration in the distribution system [28,36].…”

Section: Introductionmentioning

confidence: 99%

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Impact of Reverse Power Flow on Distributed Transformers in a Solar-Photovoltaic-Integrated Low-Voltage Network

Majeed

Nwulu

2022

Energies

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Modern low-voltage distribution systems necessitate solar photovoltaic (PV) penetration. One of the primary concerns with this grid-connected PV system is overloading due to reverse power flow, which degrades the life of distribution transformers. This study investigates transformer overload issues due to reverse power flow in a low-voltage network with high PV penetration. A simulation model of a real urban electricity company in Ghana is investigated against various PV penetration levels by load flows with ETAP software. The impact of reverse power flow on the radial network transformer loadings is examined for high PV penetrations. Using the least squares method, simulation results are modelled in Excel software. Transformer backflow limitations are determined by correlating operating loads with PV penetration. At high PV penetration, the models predict reverse power flow into the transformer. Interpolations from the correlation models show transformer backflow operating limits of 78.04 kVA and 24.77% at the threshold of reverse power flow. These limits correspond to a maximum PV penetration limit of 88.30%. In low-voltage networks with high PV penetration; therefore, planners should consider transformer overload limits caused by reverse power flow, which degrades transformer life. This helps select control schemes near substation transformers to limit reverse power flow.

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Section: Transformer Kva Loadingmentioning

confidence: 53%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Impact of Reverse Power Flow on Distributed Transformers in a Solar-Photovoltaic-Integrated Low-Voltage Network

Majeed

Nwulu

2022

Energies

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“…Os trabalhos de Carollo, Chaudhary e Pillai (2015) e Ebe et al (2017) são citados como exemplos da avaliação da capacidade de hospedagem utilizando métodos determinísticos. O primeiro define estratégias de aumento da inserção PV de acordo com o posicionamento do barramento da subestação, aumentando os geradores até atingir a máxima hospedagem.…”

Section: Capacidade De Hospedagem De Gd-pvunclassified

Estudo investigativo da crescente integração de recursos de energia distribuídos à rede de distribuição de baixa tensão

Leite¹

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O presente trabalho foi realizado com apoio do Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), processo 134233/2019-0 e com apoio da Coordenação de Aperfeiçoamento de Pessoal de Nível Superior -Brasil (CAPES) -Código de Financiamento 001."Os filósofos têm apenas interpretado o mundo de maneiras diferentes; a questão, porém, é transformá-lo." (Karl Marx, Tese Onze Sobre Feuerbach) Palavras-chave: Geração fotovoltaica. Qualidade da energia elétrica. Recursos de energia distribuídos. Rede de distribuição de baixa tensão. Sistema de armazenamento de energia.

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A thorough comparison of optimization-based and stochastic methods for determining hosting capacity of low voltage distribution network

Le,

2023

Electr Eng

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Evaluation of PV hosting capacities of distribution grids with utilisation of solar roof potential analyses

Cited by 14 publications

References 1 publication

Impact of Reverse Power Flow on Distributed Transformers in a Solar-Photovoltaic-Integrated Low-Voltage Network

Impact of Reverse Power Flow on Distributed Transformers in a Solar-Photovoltaic-Integrated Low-Voltage Network

Estudo investigativo da crescente integração de recursos de energia distribuídos à rede de distribuição de baixa tensão

A thorough comparison of optimization-based and stochastic methods for determining hosting capacity of low voltage distribution network

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