Aging based maintenance and reinvestment scheduling of electric distribution
Korpijärvi, Juha (2012-11-23)
Väitöskirja
Korpijärvi, Juha
23.11.2012
Acta Universitatis Lappeenrantaensis
Julkaisun pysyvä osoite on
https://urn.fi/URN:ISBN:978-952-265-280-5
https://urn.fi/URN:ISBN:978-952-265-280-5
Tiivistelmä
The maintenance of electric distribution network is a topical question for distribution
system operators because of increasing significance of failure costs. In this dissertation
the maintenance practices of the distribution system operators are analyzed and a theory
for scheduling maintenance activities and reinvestment of distribution components is
created.
The scheduling is based on the deterioration of components and the increasing failure
rates due to aging. The dynamic programming algorithm is used as a solving method to
maintenance problem which is caused by the increasing failure rates of the network.
The other impacts of network maintenance like environmental and regulation reasons
are not included to the scope of this thesis. Further the tree trimming of the corridors
and the major disturbance of the network are not included to the problem optimized in
this thesis.
For optimizing, four dynamic programming models are presented and the models are
tested. Programming is made in VBA-language to the computer. For testing two
different kinds of test networks are used. Because electric distribution system operators
want to operate with bigger component groups, optimal timing for component groups is
also analyzed. A maintenance software package is created to apply the presented
theories in practice. An overview of the program is presented.
system operators because of increasing significance of failure costs. In this dissertation
the maintenance practices of the distribution system operators are analyzed and a theory
for scheduling maintenance activities and reinvestment of distribution components is
created.
The scheduling is based on the deterioration of components and the increasing failure
rates due to aging. The dynamic programming algorithm is used as a solving method to
maintenance problem which is caused by the increasing failure rates of the network.
The other impacts of network maintenance like environmental and regulation reasons
are not included to the scope of this thesis. Further the tree trimming of the corridors
and the major disturbance of the network are not included to the problem optimized in
this thesis.
For optimizing, four dynamic programming models are presented and the models are
tested. Programming is made in VBA-language to the computer. For testing two
different kinds of test networks are used. Because electric distribution system operators
want to operate with bigger component groups, optimal timing for component groups is
also analyzed. A maintenance software package is created to apply the presented
theories in practice. An overview of the program is presented.
Kokoelmat
- Väitöskirjat [1037]