Design and Performance of an Advanced Communication Network for Future Active Distribution Systems

Júnior, Francisco Martins Portelinha; Souza, Antônio Carlos Zambroni de; Ribeiro, Paulo F.; Oliveira, Denisson Q.; Nascimento, Bruno de Nadai

doi:10.1061/(asce)ey.1943-7897.0000530

Cited by 4 publications

(3 citation statements)

References 48 publications

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“…The remainder of partial derivatives in (12) and (16) can be found and better explained in [8], where this methodology has been initially proposed.…”

Section: Secondary Control Approachmentioning

confidence: 99%

“…[11] highlight the telecommunications’ infrastructure importance inside MGs under secondary control operation, showing the necessity to consider it in the system's operation, due to its high‐power consumption when operating in emergency scenarios. The performance and efficiency of a wireless communication infrastructure applied to active distribution networks are demonstrated in [12]. That work drafts the possibility to maximise the reliability, bandwidth, and coverage area of telecommunication systems with minimum power consumption under secondary control performance, essential to a centralised approach when the MGCC defines the setpoints and send to the generators by a telecommunication infrastructure.…”

Section: Introductionmentioning

confidence: 99%

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Centralised secondary control for islanded microgrids

Nascimento

Souza

Marujo

et al. 2020

IET Renewable Power Generation

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Electric power systems have undergone substantial changes in their operation. The higher penetration of renewable resources, demand response capability, and generators operating via droop control at the distribution level are the main features resulting in the microgrid concept. Microgrids must operate connected or islanded from the main grid, ensuring reliability and quality in the supply of energy in both operating scenarios. In this sense, the secondary control becomes essential in the system's resilience, since it is responsible for restoring the frequency and voltage within acceptable values. This study proposes a unified frequency and voltage secondary controls for microgrids operating in islanded mode. For this sake, a modification in the load flow algorithm considering a Jacobian matrix takes place, enabling a sensitivity analysis to give the adjustments in the set point of generators. The help of the Levenberg-Marquardt method improves the convergence in the modified load flow. All generators are continuously considered in this process, regarding their capabilities and relative control sensitivities concerning the operation point restoration. The proposed methodology is validated in a modified IEEE-37 node test feeder, showing the efficacy of the centralised secondary control under different scenarios of renewable generation penetration and load levels.

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“…The remainder of partial derivatives in (12) and (16) can be found and better explained in [8], where this methodology has been initially proposed.…”

Section: Secondary Control Approachmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Centralised secondary control for islanded microgrids

Nascimento

Souza

Marujo

et al. 2020

IET Renewable Power Generation

Self Cite

View full text Add to dashboard Cite

show abstract

“…Firstly, active control employs real‐time control and communication system to effect a better integration of DERs in a LVDN. This normally relies on powerful communication infrastructures that are expensive in both construction and maintenance, especially when users are numerous 3,4 . Secondly, limited by infrastructure, LVDN is not affluent in computational capability, while from the perspective of computation, more users implies more nodes in optimization problem, which normally leads to high computational complexity.…”

Section: Introductionmentioning

confidence: 99%

Stochastic distributed optimization of shapeable energy resources in low voltage distribution networks under limited communications

2020

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Due to the rising renewable penetration rate, modern low voltage distribution network (LVDN) calls for active control with tractable computation and limited communication. To tackle this, the paper proposes a novel stochastic distributed optimization approach. The computation of optimum is completely decentralized, with a global broadcast signal is used as public reference in order to guarantee the consistency among individual shapeable energy resources. The proposed approach employs Bernoulli trials to imitate the searching process in classical gradient descent approach, and player compatible relationship is employed to play the role of gradients to indicate the direction of the search. Working in a model-free manner without relying on iterations, the proposed approach offers an approximate optimization to minimize the accumulated compensation of reshaping/deferring the shapeable energy resources in a given LVDN while respecting the system constraints. A 103 nodes test network based on a realistic Belgian semi-urban distribution network is used for validation. With two different profiles and a special case of communication failure, the proposed approach is validated and benchmarked with a classical AC optimal power flow algorithm. The results prove that the proposed approach is able to deliver a good approximation to the theoretical optimum with reasonable gap.

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Modeling, Monitoring, and Algorithmic Opportunities in the Next-Generation Power Grid

Wang

2020

J. Energy Eng.

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Design and Performance of an Advanced Communication Network for Future Active Distribution Systems

Cited by 4 publications

References 48 publications

Centralised secondary control for islanded microgrids

Centralised secondary control for islanded microgrids

Stochastic distributed optimization of shapeable energy resources in low voltage distribution networks under limited communications

Modeling, Monitoring, and Algorithmic Opportunities in the Next-Generation Power Grid

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