Abstract
The National Grid Company Plc is responsible for the
maintenance of the high voltage electricity
transmission network in England and Wales. It must plan
maintenance so as to minimize costs taking into
account:
(1) location and size of demand, (2) generator
capacities and availabilities, (3) electricity carrying
capacity of the remainder of the network, that part not
undergoing maintenance.
Previous work showed the combination of a Genetic
Algorithm using an order or permutation chromosome
combined with hand coded ``Greedy'' Optimizers can
readily produce an optimal schedule for a four node
test problem. Following this the same GA has been used
to find low cost schedules for the South Wales region
of the UK high voltage power network.
This paper describes the evolution of the best known
schedule for the base South Wales problem using Genetic
Programming starting from the hand coded heuristics
used with the GA.
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