Mitigation of overvoltage due to high penetration of solar photovoltaics using smart inverters volt/var control

Almeida, Dilini; Pasupuleti, Jagadeesh; Ekanayake, Janaka; Karunarathne, Eshan

doi:10.11591/ijeecs.v19.i3.pp1259-1266

Cited by 15 publications

(14 citation statements)

References 23 publications

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“…In this work, the time domain based synchronous reference frame theory is used. The structure of synchronous reference frame (SRF) approach includes PI controller for dc-link capacitor voltage regulator and PLL circuit for vector orientation [28,29]. The 3 phase load currents , , in stationary coordinates are converted into 2 phase quadratic axis (q) and direct axis (d) rotating coordinates currents and using (8).…”

Section: Inverter Control: Synchronous Reference Frame Pi Controller mentioning

confidence: 99%

Voltage profile improvement of weak grid with solar PV integration

2021

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The objective of this paper is to improve the voltage profile of the grid in pertinence to grid due to power injection from distributed solar photovoltaic (PV) arrays. Weak grids are modeled as worldwide adaptation of net metering, transactive energy systems, and the possibility of further deterioration of power quality with higher grid penetration. In this paper, a solar PV integrated weak distribution grid modelled as the PV arrays being frequently connected in rural areas, due to various reasons like cheap real estate and lack of accessibility. In this paper, three case studies of PV generation are simulated, i.e., scheduled solar PV generation less than load requirement, PV generation equal to load requirement, and PV generation more than load requirement, by considering the daily solar irradiation and load demand profiles of a residential area under study.

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Section: Inverter Control: Synchronous Reference Frame Pi Controller mentioning

confidence: 99%

Voltage profile improvement of weak grid with solar PV integration

2021

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“…According to the literature review, a fair range of studies have been carried out globally to examine feasible solutions that could be adopted to enhance PV uptake [10][11][12][13][14][15][16][17][18][19][20]. However, most of the studies are focused on advanced control approaches where a significant amount of infrastructure upgrades and maintenances are required to secure the efficiency.…”

Section: Introductionmentioning

confidence: 99%

Performance evaluation of PV penetration at different locations in a LV distribution network connected with an off-load tap changing transformer

Almeida

Pasupuleti

Ekanayake

2021

IJEECS

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<span>Solar photovoltaic (PV) power generation has shown a worldwide remarkable growth in recent years. In order to achieve the increasing energy demand, a large number of residential PV units are connected to the low voltage (LV) distribution networks. However, high integration of solar PV could cause negative impacts on distribution grids leading to violations of limits and standards. The voltage rise has been recognized as one of the major implications of increased PV integration, which could significantly restrict the capacity of the distribution network to support higher PV penetration levels. This study addresses the performance of the off-load tap changing transformer under high solar PV penetration and a detailed analysis has been carried out to examine the maximum allowable PV penetration at discrete tap positions of the transformer. The maximum PV penetration has been determined by ensuring that all nodal voltages adhere to grid voltage statutory limits. The simulation results demonstrate that the first two tap positions could be adopted to control the grid voltage under higher PV penetrations thus facilitating further PV influx into the existing network.</span>

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“…However, this approach is still useful in circumstances where the prevailing voltage controllers are incapable of avoiding voltage violations in the network. As per the literature review, many researchers have studied different RPA techniques of solar PV inverters to manage overvoltage issues in LV distribution networks [14][15][16][17][18]. Among these, the fixed power factor control, power factor control as a function of injected active power (cosφ(P)), and voltage-dependent reactive power provision (Q(V)) are the key reactive power support solutions proposed by past researchers.…”

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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Mitigation of overvoltage due to high penetration of solar photovoltaics using smart inverters volt/var control

Cited by 15 publications

References 23 publications

Voltage profile improvement of weak grid with solar PV integration

Voltage profile improvement of weak grid with solar PV integration

Performance evaluation of PV penetration at different locations in a LV distribution network connected with an off-load tap changing transformer

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

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