IEEE Electrification Magazine - March 2015 - 25

Helena Vasconcelos, Carlos Moreira,
André Madureira, João Peças Lopes,
and Vladimiro Miranda

HE OPERATION OF REMOTE AND
isolated or islanded power systems
is often very challenging because of
their small system inertia. Moreover,
economic and environmental pressure has led to an increasing renewable power penetration, particularly in wind generation and solar photovoltaics (PV). Simultaneously, significant technological progress has been made in terms of control
capability of grid assets [generators, controllable loads
such as electric vehicles (EVs), and energy storage systems], mostly exploiting the capabilities of power
electronics. In this context, several advanced control
solutions can be implemented, supporting and
improving the robustness of the operation in terms of
fast frequency and voltage control responses. In this
article, the Portuguese islands are taken as a case
study. Within the Madeira archipelago (Porto Santo
and Madeira islands), two approaches were envisioned. For Porto Santo Island, the main goal is the sizing of a flywheel energy storage system (FESS) to avoid
frequency stability problems. For Madeira Island, the
objective relies on the exploitation of hydro resources
through the quantification of the technical benefits
resulting from variable speed hydro pumping stations
that are able to provide primary frequency regulation
services in the pump operation mode. In addition, this
article also addresses the benefits of introducing EVs
in Flores Island in the Azores Archipelago. Finally, to
support the development of innovative technological
solutions for this type of power system, a laboratory
setup based on scaled test systems was also set up
and is described. A set of applications was specifically
developed for such autonomous power systems. The
laboratorial infrastructure allowed the testing of

T

Advanced
Control
Solutions
for Operating
Isolated
Power Systems
Examining the Portuguese islands.

Digital Object Identifier 10.1109/MELE.2014.2380131
Date of publication: 27 February 2015
IMAGE COURTESY OF WIKIMEDIA COMMONS/NMNOGUEIRA

2325-5987/15©2015IEEE

IEEE Electrific ation Magazine / March 2 0 1 5

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Table of Contents for the Digital Edition of IEEE Electrification Magazine - March 2015

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