Faults between AC and DC lines

Student thesis: Master thesis (including HD thesis)

  • Marina Isabel Cillero Moneo
2. term, Energy Engineering, Master (Master Programme)
HVDC is becoming more appealing
when it comes to the transmission of
power through long distances. An option
when implementing new lines
is for HVDC lines to share the same
transmission tower than HVAC lines.
However, some technical issues must
be analysed like how the hybrid ACDC
network reacts under a fault. This
project studies the behavior of the
system under hybrid fault topologies
which involve both systems so a suitable
protection system can be implemented.
Different fault locations are
considered for each model. The faults
in the AC-DC system are compared
to individual AC and DC systems in
order to assess the difference. Hence,
three models are simulated: a pure
AC system, a pure DC system and a
AC-DC system under different fault
conditions. Then the results are evaluated
for each of the systems as a first
step for choosing the best suited protection
system.
SpecialisationElectric Power Systems and High Voltage Engineering
LanguageEnglish
Publication date27 May 2021
Number of pages46
ID: 413039372