Design of Modified Droop Controller for Frequency Support in Microgrid Using Fleet of Electric Vehicles

Droop control has been extensively used by academia and industry for managing frequency fluctuations at microgrid (MG). This controller generates series of reference signals to different distributed energy sources (DES) such as diesel generator, PV, and wind system based on their respective maximum...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on power systems 2017-09, Vol.32 (5), p.3627-3636
Main Authors: Rana, Rubi, Singh, Mukesh, Mishra, S.
Format: Article
Language:English
Subjects:
Automobile industry
Batteries
Charging station (CS)
Design modifications
distributed energy sources (DES)
Distributed generation
Electric discharges
Electric vehicles
electric vehicles (EVs)
Electrical loads
Frequency control
Generators
microgrid (MG) and modified droop controller (MDC)
Microgrids
Reference signals
Stability
State of charge
Voltage control
Wind power generation
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Droop control has been extensively used by academia and industry for managing frequency fluctuations at microgrid (MG). This controller generates series of reference signals to different distributed energy sources (DES) such as diesel generator, PV, and wind system based on their respective maximum capacities. However, the combination of inertial and noninertial DES leads to frequency fluctuations at MG. Therefore, this paper proposes a novel frequency support strategy by controlling the operation of DES and controllable loads, i.e., electric vehicles (EVs). Moreover, fleet of EVs batteries maximum capacity depends upon constraints, such as state of charge (SoC), random arrival, and departure patterns. Hence, to accomodate EVs' batteries with droop controller, it has been enhanced with communication links and feedback mechanism and referred as modified droop controller (MDC). This MDC would be now able to dispatch reference signals to both DES and EVs. However, for meeting reference signal given to fleet of EVs, an aggregator (AG) is proposed. AG can alter the charging and discharging rates of EVs' thereby satisfying EVs' needs in terms of battery's SoC. Extensive simulations have been done using the proposed scheme on data available from Santa Rita Jails' MG.
ISSN:0885-8950
1558-0679
DOI:10.1109/TPWRS.2017.2651906