Impact of Rooftop Photovoltaics on the Distribution System

Alboaouh, Kamel; Mohagheghi, Salman

doi:10.1155/2020/4831434

Cited by 56 publications

(25 citation statements)

References 199 publications

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“…7,8 Thus, a PV system with decoupled active and reactive power control can support the grid during fault and enhance overall grid stability. [24][25][26] A reactive power injection during a voltage sag can also help in the fault recovery process. 6,8 Consider a single machine with infinite bus system shown in Figure 4, the residential load is connected to the low voltage distribution grid at bus-2 along with a PV generator.…”

Section: Reactive Power Support In Weak Gridsmentioning

confidence: 99%

“…FACTS-device must be fast enough to maintain the PCC voltage more than the threshold value to prevent the inverter's disconnection from the grid. 25,33 Fast dynamic response of FACTS-device is only possible when there is a high bandwidth control coordination between the inverter's controller and the FACTS-device controller. 31 On the other hand, an embedded LVRT implemented in the inverter controller can save extra cost and complexity involved in implementing an LVRT with external FACTS-device, 14 since an embedded LVRT would be implemented at the innermost, high bandwidth control loop.…”

Section: Problems In Conventional Solutionsmentioning

confidence: 99%

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Grid‐connected photovoltaic inverters with low‐voltage ride through for a residential‐scale system: A review

Talha

Amir

Raihan

et al. 2020

Int Trans Electr Energ Syst

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Background: Recent advancements in solar power generation technology have paved the way for a vast number of photovoltaic (PV) systems integration into the grid network. The global installed capacity of rooftop PV systems has already surpassed a 50 GW mark in 2020, while the total installed capacity of all types of PV systems is reaching beyond 500 GW. The influx of distributed PV-generators must be equipped with sophisticated control to ensure grid stability, especially during grid faults. A devastating grid outage may occur if the grid-tied PV inverters are not equipped with the "fault-ride-through" mechanism. Many countries have already enforced a mandatory grid code which includes a low-voltage-ride through requirements for PV-generators. Aim and Objective: This paper reviews the design of a rooftop PV inverters in the light of low-voltage-ride-through requirements.Materials and Methods: For the implementation of low-voltage-ride-through (LVRT), the design of low-voltage-sag detection, grid-synchronization, filterselection, and power-controllers are examined through simulations and literature survey. LVRT implementation issues are highlighted with an emphasis on the current controller performance during grid sags.Results and Discussion: From the review and analysis conducted in this study, this paper concludes that ensuring a stable DC-link and appropriate control-reference-signals during the grid faults are the keys to the LVRT implementation. Conclusion:In addition to robust power control, an autonomous PV generator should promptly detect the grid conditions and fulfils the ancillary services

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Section: Reactive Power Support In Weak Gridsmentioning

confidence: 99%

Section: Problems In Conventional Solutionsmentioning

confidence: 99%

Grid‐connected photovoltaic inverters with low‐voltage ride through for a residential‐scale system: A review

Talha

Amir

Raihan

et al. 2020

Int Trans Electr Energ Syst

View full text Add to dashboard Cite

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“…However, the massive use of grid-connected PV systems may affect the power quality; this is known as high PV penetration [7][8][9]. Some first cases of problems due to high penetration scenarios were reported in European countries such as Germany [10], the Netherlands [11], and the United Kingdom [12].…”

Section: Introductionmentioning

confidence: 99%

Active Power Management for PV Systems under High Penetration Scenario

Medina

Vázquez

Vaquero

et al. 2021

International Journal of Photoenergy

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Although PV systems are one of the most widely used alternatives as a renewable energy source due to their well-known advantages, there are significant challenges to address related to voltage fluctuations and reverse power flow caused by high PV penetration scenarios. As a potential solution to this problem, an active power management strategy is proposed in this work using a residential cluster as a benchmark. The proposed strategy is analyzed and experimentally verified, offering a simple way to reduce the voltage fluctuations by regulating the active power delivered by the PV system, achieving also relevant functionalities for the system, such as the regulation of the DC bus voltage, maximum power point tracking (MPPT), synchronization with the grid voltage, detection of high penetration conditions, and a simple strategy for the main controller with an effective performance. The proposal system shows satisfactory results being able to maintain grid voltage fluctuations within the voltage standard specifications.

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“…In recent years, Distributed Energy Resources (DERs), such as solar photovoltaic (PV) systems, have made inroads into distribution networks, gaining a significant share of the generation mix. However, the increasing levels and intermittent nature of solar PV systems impose a variety of implications in conventional PV-rich distribution networks, where voltage regulation has become a difficult task due to the presence of distributed supply points [1,2]. The overvoltage issues attributed to reverse power flow have been recognized as the key limiting factor for solar PV integration in distribution networks [3,4].…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation of Solar PV Inverter Controls for Overvoltage Mitigation in MV Distribution Networks

et al. 2021

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The incorporation of real and reactive power control of solar photovoltaic (PV) inverters has received significant interest as an onsite countermeasure to the voltage rise problem. This paper presents a comprehensive analysis of the involvement of active power curtailment and reactive power absorption techniques of solar PV inverters for voltage regulation in medium voltage (MV) distribution networks. A case study has been conducted for a generic MV distribution network in Malaysia, demonstrating the effectiveness of fixed power factor control, Volt–Var, and Volt–Watt controls in mitigating overvoltage issues that have arisen due to the extensive integration of solar PV systems. The results revealed that the incorporation of real and reactive power controls of solar PV inverters aids in successfully mitigating overvoltage issues and support network operating conditions. Furthermore, the comparative analysis demonstrated the importance of employing the most appropriate control technique for improved network performance.

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Impact of Rooftop Photovoltaics on the Distribution System

Cited by 56 publications

References 199 publications

Grid‐connected photovoltaic inverters with low‐voltage ride through for a residential‐scale system: A review

Grid‐connected photovoltaic inverters with low‐voltage ride through for a residential‐scale system: A review

Active Power Management for PV Systems under High Penetration Scenario

Performance Evaluation of Solar PV Inverter Controls for Overvoltage Mitigation in MV Distribution Networks

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