scholarly journals A New Approach to Optimal Allocation of Reactive Power Ancillary Service in Distribution Systems in the Presence of Distributed Energy Resources

2015 ◽  
Vol 5 (4) ◽  
pp. 1284-1309 ◽  
Author(s):  
Abouzar Samimi ◽  
Ahad Kazemi
Keyword(s):  
Distribution Systems ◽  
Optimal Allocation ◽  
Reactive Power ◽  
Energy Resources ◽  
Distributed Energy Resources ◽  
Ancillary Service ◽  
Distributed Energy ◽  
New Approach

scholarly journals Hierarchical, Grid-Aware, and Economically Optimal Coordination of Distributed Energy Resources in Realistic Distribution Systems

Energies ◽  
2020 ◽  
Vol 13 (23) ◽  
pp. 6399
Author(s):  
Mads Almassalkhi ◽  
Sarnaduti Brahma ◽  
Nawaf Nazir ◽  
Hamid Ossareh ◽  
Pavan Racherla ◽  
...  
Keyword(s):  
Distribution System ◽  
Distribution Systems ◽  
Large Scale ◽  
Optimization Methods ◽  
Energy Resources ◽  
Distributed Energy Resources ◽  
Solar Pv ◽  
Ancillary Service ◽  
Distributed Energy ◽  
Optimal Coordination

Renewable portfolio standards are targeting high levels of variable solar photovoltaics (PV) in electric distribution systems, which makes reliability more challenging to maintain for distribution system operators (DSOs). Distributed energy resources (DERs), including smart, connected appliances and PV inverters, represent responsive grid resources that can provide flexibility to support the DSO in actively managing their networks to facilitate reliability under extreme levels of solar PV. This flexibility can also be used to optimize system operations with respect to economic signals from wholesale energy and ancillary service markets. Here, we present a novel hierarchical scheme that actively controls behind-the-meter DERs to reliably manage each unbalanced distribution feeder and exploits the available flexibility to ensure reliable operation and economically optimizes the entire distribution network. Each layer of the scheme employs advanced optimization methods at different timescales to ensure that the system operates within both grid and device limits. The hierarchy is validated in a large-scale realistic simulation based on data from the industry. Simulation results show that coordination of flexibility improves both system reliability and economics, and enables greater penetration of solar PV. Discussion is also provided on the practical viability of the required communications and controls to implement the presented scheme within a large DSO.

Optimal Planning and Operation of Distribution Systems Considering Distributed Energy Resources and Automatic Reclosers

2018 ◽  
Vol 16 (1) ◽  
pp. 126-134 ◽  
Author(s):  
Luis Fernando Grisales ◽  
Oscar Danilo Montoya ◽  
Alejandro Grajales ◽  
Ricardo Alberto Hincapie ◽  
Mauricio Granada
Keyword(s):  
Distribution Systems ◽  
Energy Resources ◽  
Distributed Energy Resources ◽  
Optimal Planning ◽  
Distributed Energy ◽  
Planning And Operation
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