Impact of distributed generation on protection and voltage regulation of distribution systems: A review

Razavi, S. Ehsan; Rahimi, Ehsan; Javadi, Mohammad Sadegh; Nezhad, Ali Esmaeel; Lotfi, Mohamed; Shafie‐khah, Miadreza; Catalão, João P.S.

doi:10.1016/j.rser.2019.01.050

Cited by 280 publications

(114 citation statements)

References 107 publications

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“…The commercial and regulatory challenges are not mentioned here because the focus is on the technical challenges only. The technical challenges of integrating high penetration levels of small-scale PV systems into the distribution network of the grid come in the form of voltage regulation, power quality, harmonics and protection challenges according to the majority of published papers [8][9][10][27][28][29][30][31][32][33]. The reason for the majority of those technical challenges is that the distribution network when constructed did not consider the possibility of large penetration levels of PV technology connected to it, altering the operation of the network from passive (unidirectional) to active (bidirectional).…”

Section: Technical Challenges Of Integrating High Penetration Levels mentioning

confidence: 99%

The Technical Challenges Facing the Integration of Small-Scale and Large-scale PV Systems into the Grid: A Critical Review

Alshahrani

Omer

et al. 2019

Electronics

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Decarbonisation, energy security and expanding energy access are the main driving forces behind the worldwide increasing attention in renewable energy. This paper focuses on the solar photovoltaic (PV) technology because, currently, it has the most attention in the energy sector due to the sharp drop in the solar PV system cost, which was one of the main barriers of PV large-scale deployment. Firstly, this paper extensively reviews the technical challenges, potential technical solutions and the research carried out in integrating high shares of small-scale PV systems into the distribution network of the grid in order to give a clearer picture of the impact since most of the PV systems installations were at small scales and connected into the distribution network. The paper reviews the localised technical challenges, grid stability challenges and technical solutions on integrating large-scale PV systems into the transmission network of the grid. In addition, the current practices for managing the variability of large-scale PV systems by the grid operators are discussed. Finally, this paper concludes by summarising the critical technical aspects facing the integration of the PV system depending on their size into the grid, in which it provides a strong point of reference and a useful framework for the researchers planning to exploit this field further on.

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Section: Technical Challenges Of Integrating High Penetration Levels mentioning

confidence: 99%

The Technical Challenges Facing the Integration of Small-Scale and Large-scale PV Systems into the Grid: A Critical Review

Alshahrani

Omer

et al. 2019

Electronics

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“…Due to the rapid growth of the integration of the distributed generations (DGs) into the distribution system, the use of the network reconfiguration technique without considering the presence of the DGs is no longer applicable. The optimal DG installation in the distribution can effectively contribute to improving the performance of the distribution systems in terms of system loss reduction and voltage profile enhancement [8].…”

Section: Introductionmentioning

confidence: 99%

Optimal Network Reconfiguration and DG Integration in Power Distribution Systems Using Enhanced Water Cycle Algorithm

Ibrahim¹,

Alwash²,

Ahmed³

2020

IJIES

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This paper presents an Enhanced Water Cycle Algorithm (EWCA) to optimize the network reconfiguration and distributed generation (DG) integration simultaneously for minimizing system power losses and improving voltage stability index (VSI) in the distribution system while considering all operational constraints. For validation, the performance of the proposed method is compared with other methods, which utilized well-known meta-heuristic algorithms. Different cases for network reconfiguration and DG integration are carried out in order to evaluate the performance of the proposed method. The effectiveness of the proposed method is assessed using the IEEE 69-node radial distribution system. According to the simulation results obtained, the proposed method in which the simultaneous optimal network reconfiguration and the DG size and location are implemented can provide a remarkable solution in terms of power loss reduction and voltage profile improvement. The proposed method also proved its superiority compared with other existing methods in terms of power loss reduction (i.e., 84.2% loss reduction compared with the base case).

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“…The conceptualization of flexible and reliable architecture for voltage control assumes a key role in modern smart grids (SG) [1], where the solution of the dichotomy between the strictly power quality requirements, and the need for increasing the hosting capacity of renewable power generators represents one of the most relevant issues to address [2]. In particular, it is well known that the increasing penetration of small and dispersed non-programmable generation units into existing electricity distribution grids affects the active and reactive power flows, inducing a number of complex side-effects on the voltage magnitude profiles at the load buses, which could limit the exploitation of renewable energy sources [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Decentralized Smart Grid Voltage Control by Synchronization of Linear Multiagent Systems in the Presence of Time-Varying Latencies

et al. 2019

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Modern power distribution systems require reliable, self-organizing and highly scalable voltage control systems, which should be able to promptly compensate the voltage fluctuations induced by intermittent and non-programmable generators. However, their deployment in realistic operation scenarios is still an open issue due, for example, to the presence of non-ideal and unreliable communication systems that allow each component within the power network to share information about its state. Indeed, due to technological constraints, time-delays in data acquisition and transmission are unavoidable and their effects have to be taken into account in the control design phase. To this aim, in this paper, we propose a fully distributed cooperative control protocol allowing the voltage control to be achieved despite the presence of heterogeneous time-varying latencies. The idea is to exploit the distributed intelligence along the network, so that it is possible to bring out an optimal global behavior via cooperative distributed control action that leverages both local and the outdated information shared among the devices within the power network. Detailed simulation results obtained on the realistic case study of the IEEE 30-bus test system are presented and discussed in order to prove the effectiveness of the proposed approach in the task of solving complex voltage control problems. Finally, a robustness analysis with respect to both loads variations and hard communication delays was also carried to disclose the efficiency of the approach.

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Impact of distributed generation on protection and voltage regulation of distribution systems: A review

Cited by 280 publications

References 107 publications

The Technical Challenges Facing the Integration of Small-Scale and Large-scale PV Systems into the Grid: A Critical Review

The Technical Challenges Facing the Integration of Small-Scale and Large-scale PV Systems into the Grid: A Critical Review

Optimal Network Reconfiguration and DG Integration in Power Distribution Systems Using Enhanced Water Cycle Algorithm

Decentralized Smart Grid Voltage Control by Synchronization of Linear Multiagent Systems in the Presence of Time-Varying Latencies

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