Page 83 - Mathematical Models and Algorithms for Power System Optimization

Optimization of Annual Generator Maintenance Scheduling 73

Table 3.6 Contents of RP card
Identifier Contents

RP RP, denoting the maintenance time nonoverlapping (power
plant) card
PLANT1 Name of power plant 1
PLANT2 Name of power plant 2 (may be the same as power plant 1)
DT Time interval (days) between maintenance time, optional
PCAP Lower limit of unit capacity that this card works, if left blank,
no such limit
P-START Start date (YY-MM-DD) of maintenance time nonoverlapping
restraint, optional
P-END End date (YY-MM-DD) of maintenance time nonoverlapping
restraint, optional
Notes: (1) If PLANT1¼PLANT2, it means the maintenance time of generating unit in the same
power plant cannot be overlapped; if PLANT16¼PLANT2, it means the maintenance time of units
in the two power plants cannot be overlapped. (2) If P-START and P-END are left blank, it means
that the maintenance time nonoverlapping (for power plants) card will work in the entire GMS
study period.

(5) Maintenance time nonoverlapping (generator) card (RG) can restrain two given units from
overlapping in their maintenance time, with card contents shown in Table 3.7.

Table 3.7 Contents of RG card
Identifier Contents

RG RG, denoting the maintenance time nonoverlapping
(generator) card in this line
GEN1 Name of generator 1
GEN2 Name of generator 2
DT Time interval (days) between maintenance time, optional
G-START Start date (YY-MM-DD) of maintenance time nonoverlapping
restraint, optional
G-END End date (YY-MM-DD) of maintenance time nonoverlapping
restraint, optional
Note: If G-START and G-END are left blank, it means that the maintenance time nonoverlapping
(generator) card will work in the entire GMS study period.

(6) Equivalent load curve card (CC). The equivalent load of the system in each period is
composed of actual forecast load minus the output of hydro plants and small unit and the
power provided by the external system in the stress reduction period, plus the disabled
capacity (capacity of units not reaching their full capacity) of the system during
such period.
The contents of equivalent load curve card are shown in Table 3.8.