Investigation and Assessment of the Impacts of Reverse Power Flow on Power System Network Loading under High Penetration of Wind Energy

Aladesanmi, Ereola J.; Dorrell, David G.

doi:10.1109/robomech.2019.8704734

Cited by 5 publications

(1 citation statement)

References 11 publications

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“…Recent research has demonstrated that BESSs could help to prevent the overvoltage caused by high-penetration PV in distribution systems [23], [29], [30]. Additionally, when the capacity of the PV power plant installed in the distribution system increases, RPF may cause problems [31]- [36] and also affect the power loss [32] both inside and outside of the transmission lines and transformers [33]. Many researchers have proposed solutions to RPF problems, such as using a reverse power relay (RPR), which is simple and reliable for the effective protection against RPF [34].…”

Section: Introductionmentioning

confidence: 99%

Reduction of Reverse Power Flow Using the Appropriate Size and Installation Position of a BESS for a PV Power Plant

Unahalekhaka

Sripakarach

2020

IEEE Access

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This paper presents an analysis of the appropriate size and installation position of a battery energy storage system (BESS) for reducing reverse power flow (RPF). The system focused on photovoltaic (PV) system power plants. The RPF from the distribution system into the transmission systems impacts the power system due to the increased penetration of the PV system, which produces more power than load. The analysis was divided into three parts: 1) Analysis of the initial load and capacity of the PV power plant; 2) Analysis of the initial load and the load when the capacity of the PV power plant is increased; 3) Analysis of the increased load and capacity of the PV power plant. The stability of the system for each position of the BESS guided the analysis of the reduction of the RPF according to two criteria: reducing the RPF directly and smoothing the distribution load curve. The analysis of the appropriate installation position of the BESS was compared at three positions: 1) at a 115-kV bus; 2) at a 22-kV bus; 3) at a PV power plant. The results of this research showed that the BESS can reduce the RPF and increase the smoothing of the distribution load curve. It can also reduce energy loss and maximum power consumption. However, the appropriate installation position of the BESS was in the PV power plant, because this reduced the energy loss, power fluctuations and electricity production more than installing the BESS at a 115-kV bus or a 22-kV bus.

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Section: Introductionmentioning

confidence: 99%

Reduction of Reverse Power Flow Using the Appropriate Size and Installation Position of a BESS for a PV Power Plant

Unahalekhaka

Sripakarach

2020

IEEE Access

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Probabilistic impact of wind energy integration on distribution transformers

Zhao

2020

Energy Reports

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Mitigation of limitation imposed on hosting capacity in low voltage networks by their distribution transformer loading and degradation considerations

Ame‐Oko,

Lavrova

2024

IET Energy Syst Integration

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A distribution transformer's thermal operating conditions can impose a limitation on the Hosting Capacity (HC) of an electrical distribution feeder for PV interconnections in the feeder's low‐voltage network. This is undesirable as it curtails PV interconnection of both residential and commercial customers in the secondary networks at a time when there are record numbers of interconnection requests by utilities' customers. The authors analyse the limitations on HC due to transformer loading and degradation considerations. Then, the paper proposes a battery energy storage system (BESS) dispatch strategy that will mitigate the limitation on distribution feeder HC by distribution transformers. Three scenarios of HC were simulated for a test network—HC evaluation without restrictions by the distribution transformer (scenario 1), HC evaluation with restrictions by the distribution transformer (scenario 2), and HC evaluation without restriction by the distribution transformer, and with the implementation of the proposed BESS mitigation strategy (scenario 3). Simulation results show that transformer lifetime is depleted to about 6% of expected lifetime for unrestricted HC in scenario 1. Curtailing the HC by 32% in scenario 2 improves the lifetime to 149% of expected lifetime. Implementing the proposed BESS in scenario 3 improves the transformer lifetime to 127% and increases the HC by 62% above the curtailed value in scenario 2, and by 10% above the original HC in scenario 1. The BESS strategy implementation produced cost savings of 49% and 27% of the transformer cost in scenarios 2 and 3, respectively, due to deferred transformer replacement. Conversely, there is a 1600% replacement cost incurred in scenario 1, which underscores the need for a mitigation strategy. The proposed BESS strategy does not only improve the HC of a distribution feeder but also increases a distribution transformer's lifetime leading to replacement cost savings.

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Investigation and Assessment of the Impacts of Reverse Power Flow on Power System Network Loading under High Penetration of Wind Energy

Cited by 5 publications

References 11 publications

Reduction of Reverse Power Flow Using the Appropriate Size and Installation Position of a BESS for a PV Power Plant

Reduction of Reverse Power Flow Using the Appropriate Size and Installation Position of a BESS for a PV Power Plant

Probabilistic impact of wind energy integration on distribution transformers

Mitigation of limitation imposed on hosting capacity in low voltage networks by their distribution transformer loading and degradation considerations

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