Page 81 - Mathematical Models and Algorithms for Power System Optimization

Optimization of Annual Generator Maintenance Scheduling 71

3.6.3 Description of the Input Data

The input data of generator maintenance scheduling mainly consists of the following eight
parts: GMS calculation begin card (BEGIN card), generator maintenance information card (GE
card), area maintenance capacity restraint card (RA card), maintenance time nonoverlapping
card (RP card, for power plants), maintenance time nonoverlapping card (RG card, for
generator groups), equivalent load curve card (CC card), GMS data file end card (END card),
and information comment card (** card).

Among them, BEGIN, GE, CC, and END cards are necessary in the input data files; otherwise
the procedure cannot be executed. Although the RA, RP, and RG cards can be combined by the
procedure, users can at-will construct the ES knowledge base for the system based on the
characteristics of their own system. Therefore, the GMS solution process can be intervened to
obtain the generator maintenance scheduling in compliance with the system requirements.
The details of the eight data cards are described as follows:
(1) GMS calculation begin card (BEGIN card), which includes scheduling start time, end
time, as well as the case name and print options (see Table 3.3).

Table 3.3 Contents of BEGIN card
Identifier Contents

BEGIN BEGIN, denoting the begin card
START Schedule start time (YY-MM-DD), for example,
94-12-31
CASENAME Case name (optional)
P Print options, P¼0: output the calculation
results only
P¼1: output the reduced input data and calculation results

(2) The generator maintenance information card (GE card), which includes all information
required for maintenance scheduling of generating units (see Table 3.4).

Table 3.4 Contents of GE card
Identifier Contents

GE GE, denoting the generator maintenance information card
AERA Name of area where the generating unit is located
PLANT Name of power plant where the generator is located
GEN Name of generating unit
BUREAU Fill in B, which means the generator belongs to the Bureau,
otherwise left blank
CAP Rated capacity of the generator (MW, if CAP¼0 or left blank,
it means this line is header boiler)
Continued