where.
d the SSVD owing to a WF interconnected with the grid
cosq the total power factor of a WF
SSCC the system SCC on the primary side of the substation
transformer
VLP the voltage level of the primary distribution network
XREI X/R ratio of equivalent impedance in the high-voltage
transmission network as viewed from the primary side of the
substation transformer
RCST the rated capacity of the substation transformer
PIST the percent impedance of the substation transformer
XRST the X/R ratio of the substation transformer
SPFC the size of the primary feeder conductor
LPF the length of the primary feeder
TLPF the total loads along the primary feeder
PFFL the total power factor of discrete feeder loads
DDFL the distribution of discrete feeder loads
TLF the lumped loads of other feeders supplied by the same
substation transformer
PFTL the power factor of the lumped loads of other feeders
supplied by the same substation
The optimal results (lower limits) obtained by the GA-SaE algorithm
are represented using a polynomial of degree n, as shown
in Eq. (21). The selection of degree of the polynomial depends on
the accuracy requirements.