Most electric power networks will include a variety of protection
/ LED technology. Migration from electromechanical to
digital relays created a huge increase in the volume of acquired
data, & in the authors' experience relay records will be
a mix of paper and digital media; protection data is rarely
consolidated or used for decision making in asset management
processes once testing is completed.
The authors submit that increasing product & data complexity,
in conjunction with multiple generations of equipment is
further exacerbated by the observed reduction in the number
& skills of many test and maintenance staff: these factors can
have a significant impact on overall power system reliability.
Elektro Ljubljana D.D. has adopted a new intelligent mobile
approach for secondary systems maintenance, enabling Advanced
Data Management together with access to rapid, automatic
and reliable testing procedures. This paper describes the
solution & how it provides documentation optimization with
automatic synchronization of the mobile data throughout the
enterprise. Cost implications are also considered.
Maintenance of modern protection devices must be
adapted to existing and future technologies (E.g.
1EC61850). The authors present new developments in
protection testing methodology termed SOR (Stabilization-
Operation-Reset). SOR is a standard, simple and
vendor-independent test methodology. This paper presents
practical experience of SOR at Elektro Ljubljana, its
specific adaptation to numerical devices & implications
for future trends in Mobile Data Management.