Reactive Power Cost From PV Inverters Considering Inverter Lifetime Assessment

Gandhi, Oktoviano; Rodríguez-Gallegos, Carlos D.; Gorla, Naga Brahmendra Yadav; Bieri, Monika; Reindl, Thomas; Srinivasan, Dipti

doi:10.1109/tste.2018.2846544

Cited by 62 publications

(28 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Considered opportunity costs are due to losses in the compensating device and dependable upon the cost of kWh. Furthermore, no additional operational costs due to maintenance costs or due to inverter's lifetime decrease caused by increased output current, are considered, although increase of inverter's apparent power influences its lifetime [24,25].…”

Section: Cost Analysismentioning

confidence: 99%

Reactive Power Compensation with PV Inverters for System Loss Reduction

Vlahinić

Franković

Komen³

et al. 2019

Energies

View full text Add to dashboard Cite

Photovoltaic (PV) system inverters usually operate at unitary power factor, injecting only active power into the system. Recently, many studies have been done analyzing potential benefits of reactive power provisioning, such as voltage regulation, congestion mitigation and loss reduction. This article analyzes possibilities for loss reduction in a typical medium voltage distribution system. Losses in the system are compared to the losses in the PV inverters. Different load conditions and PV penetration levels are considered and for each scenario various active power generation by PV inverters are taken into account, together with allowable levels of reactive power provisioning. As far as loss reduction is considered, there is very small number of PV inverters operating conditions for which positive energy balance exists. For low and medium load levels, there is no practical possibility for loss reduction. For high loading levels and higher PV penetration specific reactive savings, due to reactive power provisioning, increase and become bigger than additional losses in PV inverters, but for a very limited range of power factors.

show abstract

Section: Cost Analysismentioning

confidence: 99%

Reactive Power Compensation with PV Inverters for System Loss Reduction

Vlahinić

Franković

Komen³

et al. 2019

Energies

View full text Add to dashboard Cite

show abstract

“…The lifetime of the inverter is reduced when SI is used to supply the additional reactive power to maintain the grid voltage. The lifetime reduction cost of SI is the main cost component 41 . The reactive power cost function model developed in Reference 41 is used in this paper for optimal reactive power support from SI for voltage regulation.…”

Section: Reactive Power Control and Lifetime Reduction Cost Of Simentioning

confidence: 99%

“…The lifetime reduction cost of SI is the main cost component 41 . The reactive power cost function model developed in Reference 41 is used in this paper for optimal reactive power support from SI for voltage regulation. The cost function can be used to calculate the incentive for reactive power from SI to encourage the DER to support the grid during stressed conditions.…”

Section: Reactive Power Control and Lifetime Reduction Cost Of Simentioning

confidence: 99%

Optimal coordination between PV smart inverters and different demand response programs for voltage regulation in distribution system

Gupta

Ghose

Chatterjee

2020

Int Trans Electr Energ Syst

View full text Add to dashboard Cite

Summary With the increase in the number of renewable energy resources (RES) in the distribution network, the distribution system operators are facing several operational challenges to maintain network power quality and reliability. The stochastic nature of wind speed and solar irradiance may cause voltage sag and swell during high and light load conditions, respectively. Again, owing to low X/R ratio in the active distribution network, the voltage becomes more susceptible to change with the change in net real power injections in the bus, unlike high voltage networks. This article proposes an optimal framework for voltage regulation in active distribution system using the available flexibility of load reduction based on demand response programs, and reactive power injection capability of a smart inverter (SI) of the PV system, where the coordination between the two is considered. However, for adequate grid voltage support, the selection of buses for DR programs is based on voltage sensitivity analysis. This article proposes a simple and effective technique to determine the sensitivity of a DR bus on the voltage profile of the network. The decision for the optimal location for DR resource, DR magnitude, and SI reactive power is finalized using Nondominated Sorting Genetic Algorithm II (NSGA‐II) in a bid to minimize the DR procurement cost, SI ageing cost and network loss. The work also incorporated DR modeling and probabilistic model for RES generation with the consideration of uncertainty involved in both the cases. The modified IEEE 33‐bus distribution system is chosen for authenticating the suggested technique.

show abstract

“…Figure 5 shows some of the important ancillary services involving solar PVs. It can be noted that ancillary services provided by PV systems open an important pathway in electric power market and Q injection to grid has been area of research for the last three decades [10][11][12][13][14][15][16][17][18][19][20][21][22]. Solar-PV panels do not possess Q, since they provide electric power by using PV effect.…”

Section: Q Injection To Gridmentioning

confidence: 99%

Critical Review of PV Grid-Tied Inverters

et al. 2019

View full text Add to dashboard Cite

Solar Photovoltaic (PV) systems have been in use predominantly since the last decade. Inverter fed PV grid topologies are being used prominently to meet power requirements and to insert renewable forms of energy into power grids. At present, coping with growing electricity demands is a major challenge. This paper presents a detailed review of topological advancements in PV-Grid Tied Inverters along with the advantages, disadvantages and main features of each. The different types of inverters used in the literature in this context are presented. Reactive power is one of the ancillary services provided by PV. It is recommended that reactive power from the inverter to grid be injected for reactive power compensation in localized networks. This practice is being implemented in many countries, and researchers have been trying to find an optimal way of injecting reactive power into grids considering grid codes and requirements. Keeping in mind the importance of grid codes and standards, a review of grid integration, the popular configurations available in literature, Synchronization methods and standards is presented, citing the key features of each kind. For successful integration with a grid, coordination between the support devices used for reactive power compensation and their optimal reactive power capacity is important for stability in grid power. Hence, the most important and recommended intelligent algorithms for the optimization and proper coordination are peer reviewed and presented. Thus, an overview of Solar PV energy-fed inverters connected to the grid is presented in this paper, which can serve as a guide for researchers and policymakers.

show abstract

Reactive Power Cost From PV Inverters Considering Inverter Lifetime Assessment

Cited by 62 publications

References 28 publications

Reactive Power Compensation with PV Inverters for System Loss Reduction

Reactive Power Compensation with PV Inverters for System Loss Reduction

Optimal coordination between PV smart inverters and different demand response programs for voltage regulation in distribution system

Critical Review of PV Grid-Tied Inverters

Contact Info

Product

Resources

About