Protection Strategy and Robustness of
Maghreb Electrical System: An Analytical
Study
C.BOUCHOUCHA*,
M.N. MANSOURI **, F. MIMOUNI ***
* STEG, National Dispatching, **, *** ENIM
Monastir
Abstract
The major incidents are rare but their
potential consequences can be very serious.
The regional or national black out in the
system causes the paralysis of the economic
activity and an upheaval of the social life
all the more marked as the breakdown is
longer and wider. It is necessary for this
reason to underline the correlation between
the geographical extent of a black out zone
and the duration of its realimentation,
being given the specific difficulties of the
reconstitution of a great system after
collapse. In the case this occur, a plan of
restoration of the network must be
established beforehand. It is thus justified
to make the provisions suitable to control
the incidents when they happen, in order to
limit the consequences in terms of extent,
duration of the black out and to prepare a
fast and effective realimentation for the
affected consumers. The approach of the
majority of the electricity companies on
these problems resulted in putting a whole
of measurements called plan of defence,
which based on the electrotechnical
phenomena brought during incidents and their
own dynamics. In this paper, we present the
principle of defence plan design into
preventive and curative action.
Implementation of the defence plans
integrating two groups of defensive
measurements : local measurements of defence
recommended generally for the lines of
interconnection and centralized measurements
of defence or co-ordinated called special
protection system (SPS). A synthesis study
of 111 centralized defence Plans made it
possible to raise the strong and weak points
of the whole of these defence plans. Finally
the defence plans of the maghreb electrical
system , as well as the encountered
difficulties of implementation, were
presented, commented and evaluated in order
to create a new future optimal strategy.
Keywords:
collapse of the electrical system, strategy
of defence, curative defence , preventive
defence.
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P1110838373, 822 KB)
