Multi-Objective Hierarchical Control of Unbalanced Distribution Networks to Accommodate More Renewable Connections in the Smart Grid Era

Su, Xiangjing; Masoum, Mohammad A. S.; Wolfs, Peter

doi:10.1109/tpwrs.2015.2501845

Cited by 25 publications

(11 citation statements)

References 26 publications

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“…Smart Grid targets highly reliable, self-healing, selfregulating, demand response, efficient and cutting edge network that allows integration of high penetration of renewable energy sources [1][2][3][4][5][6][7][8]. An illustration of smart grid scheme is presented in Fig.…”

Section: A Smart Gridmentioning

confidence: 99%

“…The scope to depart from traditional generation plants for long term economic and environmental benefits has made a massive increase of interests in DG technologies. Moreover, DGs can contribute to important aspects such as: network reliability, line congestion relief, overall loss reduction, and generation cost reduction in smart grid [1][2][3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

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An Adaptive Overcurrent Coordination Scheme to Improve Relay Sensitivity and Overcome Drawbacks due to Distributed Generation in Smart Grids

Shih

Enrı́quez

Leonowicz

et al. 2017

IEEE Trans. on Ind. Applicat.

113

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Distributed Generation (DG) brought new challenges for protection engineers since standard relay settings of traditional system may no longer function properly under increasing presence of DG. The extreme case is coordination loss between primary and backup relays. The directional overcurrent relay (DOCR) which is the most implemented protective device in the electrical network also suffers performance degradation in presence of DG.\ud Therefore, this paper proposes the mitigation of DG impact on DOCR coordination employing adaptive protection scheme (APS) using differential evolution algorithm (DE) while improving overall sensitivity of relays .\ud The impacts of DG prior and after the application of APS are presented based on interconnected 6 bus and IEEE 14 bus system. As a consequence, general sensitivity improvement and mitigation scheme is proposed

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Section: A Smart Gridmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An Adaptive Overcurrent Coordination Scheme to Improve Relay Sensitivity and Overcome Drawbacks due to Distributed Generation in Smart Grids

Shih

Enrı́quez

Leonowicz

et al. 2017

IEEE Trans. on Ind. Applicat.

113

View full text Add to dashboard Cite

show abstract

“…In the upper level, placement and size of ESSs as well as locations of WCTs are optimised. A comprehensive multi‐objective function is formed by weighted‐sum method [39–42]

truemin F_{UL} = ω_{1} f_{1} / s f_{1} + ω_{2} f_{2} / s f_{2} + ω_{3} f_{3} / s f_{3}

where

F_{UL}

means objective values; weight

ω_{i}

is utilised to represent the relative importance of the objectives. Scale factor

s f_{i}

ensures all the objectives have similar magnitudes and do not naturally dominate the aggregated objective function.…”

Section: Optimal Configuration For Ess and Cyber Networkmentioning

confidence: 99%

“…In the upper level, placement and size of ESSs as well as locations of WCTs are optimised. A comprehensive multi-objective function is formed by weighted-sum method [39][40][41][42] min…”

Section: Optimisation Model Of Upper Levelmentioning

confidence: 99%

Collaborative configuration for distributed energy storages and cyber systems in low‐voltage distribution networks with high penetration of PV systems

Cai

Tang

Zhang

2018

IET cyber-phys. syst.

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“…For example, in [14][15][16][17][18], operation points of different devices (e.g. inverters, batteries, OLTC) are adjusted in each control cycle by coordinated methods for voltage regulation.…”

Section: Introductionmentioning

confidence: 99%

Real-Time Coordinated Voltage Control of PV Inverters and Energy Storage for Weak Networks With High PV Penetration

Wang

Bai

Yan

2018

IEEE Trans. Power Syst.

161

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Abstract-There are more large-scale PV plants being established in rural areas due to availability of low priced land. However, distribution grids in such areas traditionally have feeders with low X/R ratios, which makes the independent reactive power compensation method less effective on voltage regulation. Consequently, upstream Step Voltage Regulator (SVR) may suffer from excessive tap operations with PV induced fast voltage fluctuations. Although a battery energy storage system (BESS) can successfully smooth PV generation, frequent charge/discharge will substantially affect its cost effectiveness. In this paper, a real-time method is designed to coordinate PV inverters and BESS for voltage regulation. To keep up with fast fluctuations of PV power, this method will be executed in each 5s control cycle. In addition, charging/discharging power of BESS is adaptively retuned by an active adjustment method in order to avoid BESS premature energy exhaustion in a long run. Finally, through a voltage margin control scheme, the upstream SVR and downstream PV inverters and BESS are coordinated for voltage regulation without any communication. This research is validated via an RTDS-MatLab co-simulation platform, and it will provide valuable insights and applicable strategies to both utilities and PV owners for large-scale PV farm integration into rural networks.Index Terms--Coordinated voltage control, photovoltaic (PV), battery energy storage system (BESS), real-time control, state of charge (SOC) regulation.

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Multi-Objective Hierarchical Control of Unbalanced Distribution Networks to Accommodate More Renewable Connections in the Smart Grid Era

Cited by 25 publications

References 26 publications

An Adaptive Overcurrent Coordination Scheme to Improve Relay Sensitivity and Overcome Drawbacks due to Distributed Generation in Smart Grids

An Adaptive Overcurrent Coordination Scheme to Improve Relay Sensitivity and Overcome Drawbacks due to Distributed Generation in Smart Grids

Collaborative configuration for distributed energy storages and cyber systems in low‐voltage distribution networks with high penetration of PV systems

Real-Time Coordinated Voltage Control of PV Inverters and Energy Storage for Weak Networks With High PV Penetration

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