Comparative study of reactive power control methods for photovoltaic inverters in low‐voltage grids

Autor: Pau Marti, Jaume Miret, Miguel Castilla, Manel Velasco, Arash Momeneh
Přispěvatelé: Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica, Universitat Politècnica de Catalunya. Departament d'Enginyeria de Sistemes, Automàtica i Informàtica Industrial, Universitat Politècnica de Catalunya. SEPIC - Sistemes Electrònics de Potència i de Control, Universitat Politècnica de Catalunya. GRINS - Grup de Recerca en Robòtica Intel·ligent i Sistemes
Rok vydání: 2016
Předmět:
Engineering
photovoltaic inverters
Denmark
020209 energy
total power loss
volt/var control
invertors
02 engineering and technology
Power factor
over-voltage problem
high power STATCOM
point tracking controller
distribution feeders
reactive power control method
reactive power control
generation
Reactive power (Electrical engineering)
0202 electrical engineering
electronic engineering
information engineering
Electronic engineering
Voltage droop
implementation
low voltage grids
distribution-systems
support
photovoltaic power systems
Renewable Energy
Sustainability and the Environment
business.industry
modules
020208 electrical & electronic engineering
Photovoltaic system
photovoltaic panels
droop method
nearoptimal location
Power (physics)
static VAr compensators
operation
Energies::Energia elèctrica [Àrees temàtiques de la UPC]
distribution networks
Overvoltage
Control system
Energia elèctrica -- Distribució
business
Low voltage
Voltage
Zdroj: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Recercat. Dipósit de la Recerca de Catalunya
instname
ISSN: 1752-1424
1752-1416
DOI: 10.1049/iet-rpg.2014.0402
Popis: The increasing installation of photovoltaic panels in low-voltage grids causes an over voltage problem, especially during high production and low consumption periods. Generally the over voltage problem is overcome by implementing reactive power control methods. The advances in networked control systems theory and practice create new scenarios where reactive power control methods can offer additional features and benefits. To explore these new capabilities, this study presents two new reactive power control methods that exploit the networked approach. These two methods are evaluated in a comparative reference framework that also includes the base-line case where no reactive control method is applied, the conventional droop method approach, and a solution based on a near-optimal location of a high power STATCOM derived from one of the new proposed networked methods. The main merit factors used to compare the control methods are the maximum voltage across the distribution grid, the power factor in the point of common coupling, and the total power losses and economic cost of the installation. With these merit factors, the advantages and limitations of the new and existing control methods are revealed and discussed. A useful discussion for selecting the best control solution is also reported.
Databáze: OpenAIRE
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