Manage Reverse Power Flow and Fault Current Level in LV Network with High Penetration of Small Scale Solar and Wind Power Generation

Bangash, K. N.; Farrag, Mohamed Emad; Osman, Ahmed

doi:10.1109/upec.2018.8541923

Cited by 13 publications

(4 citation statements)

References 6 publications

(6 reference statements)

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“…Protection against reverse power flow could be installed at each wind and solar farm. This would reduce the need for measures upstream but would rely heavily on the protection schemes remaining healthy and in service to work effectively in coordination [12].…”

Section: Resultsmentioning

confidence: 99%

Implications for Voltage Control with Increased Distributed Generation on Interconnected Power Networks

Thwaites

Vagapov

2021

2021 IEEE Conference of Russian Young Researchers in Electrical and Electronic Engineering (ElConRus)

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Electrical distribution networks in the UK are likely to experience increasing levels of distributed and renewable generation connections in the near future; emphasised by the 2019 government pledge to achieve net-zero carbon emissions by 2050. This paper focuses on a specific group of 33/11kV transformers on a meshed network in the UK and aims to model how the introduction of wind and solar farms on the interconnected 11kV distribution network could affect automatic voltage control devices upstream.

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Section: Resultsmentioning

confidence: 99%

Implications for Voltage Control with Increased Distributed Generation on Interconnected Power Networks

Thwaites

Vagapov

2021

2021 IEEE Conference of Russian Young Researchers in Electrical and Electronic Engineering (ElConRus)

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“…Figure 2 depicts the profile of the RPF as it progresses in the network branches toward the substation transformer. Beyond D, RPF may progress toward the medium-voltage (MV) network [65].…”

Section: ) Establishment Of Branch-transformer Rpf Marginsmentioning

confidence: 99%

Reverse Power Flow Due to Solar Photovoltaic in the Low Voltage Network

Majeed

Nwulu

2023

IEEE Access

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Distributed generation has enhanced power production in recent times. Due to their benefits, Ghana is interested in grid-tied solar photovoltaic (PV) systems. Despite the benefits, solar PV integration studies in Ghana have not advanced. This study examines reverse power flow (RPF) due to solar PV in Low Voltage (LV) network branches. The methodology uses a modified IEEE European test network and an Electricity Company of Ghana (ECG) LV network. ETAP software is used to simulate the two solar PV integrated LV networks, and the obtained data is used to formulate correlation models of solar PV penetration and key network parameters in Excel. Model results estimate the RPF critical values for the modified IEEE European test network and the ECG LV network as 7.36 kW and 7.44 kW, respectively. The RPF values are obtained at maximum penetration depths of 62.6% and 69.8% respectively. At maximum penetration levels, predicted line loadings are 6.42% and 7.28% respectively. Further analysis reveals branch-transformer RPF margins of 26.8% and 23.1% in the modified IEEE European test network and the ECG LV network respectively. The results are essential for establishing pre-determined settings to safeguard LV network branches and transformers from overload due to RPF.INDEX TERMS Safe margins, low voltage network, reverse power flow, simulation data, solar PV, threshold parameters.

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“…The process of power generation sector transformation through dispersed power generation changes the operating characteristics of the LV grid [8,9], to which these sources are connected. This phenomenon has at least two new contexts.…”

Section: Introductionmentioning

confidence: 99%

DSO Strategies Proposal for the LV Grid of the Future

Mroczek

Pijarski

2021

Energies

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A significant challenge for the DSO (Distribution System Operator) will be to choose the optimum strategy for flexibility service in the LV area with high RES (renewable energy sources) penetration. To this end, a representative LV grid operated in Poland was selected for analysis. Three research scenarios with RES generation were presented in the range of 1–8 kW for the power factor from 0.9 to 1. The grid PV capacity was determined for four load profiles. Based on this factor, optimum RES volume management service types were determined. Under the flexibility service, the proposed power conversion services and active RES operations for DOS were proposed. The research was conducted using the Matlab and PowerWorld Simulator environment. Optimum active power values were obtained for the RES generation function for single and dual operation systems of the power conversion system. In future, the knowledge in the field of grid capacity will enable the DSO to increase the operating efficiency of the LV grid. It will enable the optimum use of the RES generation maximisation function and proper strategy selection. It will improve the energy efficiency of the power input through the MV/LV node.

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Manage Reverse Power Flow and Fault Current Level in LV Network with High Penetration of Small Scale Solar and Wind Power Generation

Cited by 13 publications

References 6 publications

Implications for Voltage Control with Increased Distributed Generation on Interconnected Power Networks

Implications for Voltage Control with Increased Distributed Generation on Interconnected Power Networks

Reverse Power Flow Due to Solar Photovoltaic in the Low Voltage Network

DSO Strategies Proposal for the LV Grid of the Future

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