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MG test system one
The single-diagram of the first test system is shown in Fig. 3.
According to the battery initial charging and DGs status, two scenarios
are considered in the case studies in order to show the
satisfying performance of the MSOS algorithm and the behaviour of
PHEVs in this MG. These scenarios are first applied on the MG
without PHEVs and ignoring the uncertainties of the problem to
compare the MSOS algorithm performance with that of the other
well-known algorithms. In the first scenario, the battery is assumed
to be infinitely charged at the beginning and all DGs are in service
over the 24 h study period. In the second scenario, the battery is not
initially charged and DGs can shut down or started up during the
study period. In both scenarios, PV and WT available outputs are
fully exploited. This is a forcing and encouraging policy for supporting
WT and PV since these devices have to generate after the
first time capital investment. The test system is a 400 V MG connected
to the main grid with three feeders including different types
of DGs, a NiMH battery and loads as presented in Fig. 3. In the first
test system, the simulation is performed over 24 h and the utility
hourly market price, DGs bid and limits, forecasted hourly output
power for PV and WT, estimated hourly load demand and values of
the problem and algorithm parameters are presented in Fig. 4 and
Table 3. It should be noted that the purpose of 24-h scheduling is to
compare the performance of the proposed method with the other
methods in the area. Nevertheless, in practical analysis, the method
can be extended to weekly, monthly or yearly analysis with similar