vytautas siozinys © 2011 kaunas university of technologyseptember 2011 | 1 traveling wave based...
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Vytautas Siozinys © 2011 Kaunas University of Technology September 2011 | 1
Traveling wave based differential transmission line protection
dr. Vytautas Siozinys
Vytautas Siozinys © 2011 Kaunas University of Technology September 2011 | 2
Technical description
Substation BSubstation A
Transmission line
TBTA T0IED A IED B
Ethernet Ethernet
GPSGPS
.cTTL
x fault 2AB
Vytautas Siozinys © 2011 Kaunas University of Technology September 2011 | 3
Increase Transmission network: reliability, flexibility, stability, availability, equipment lifetime.
Technical description
Conventional IDEA
Increase line length
increase measurement
error
Increase line length
decrease
measurement error
Error 10-30% Error <1%
The GNSS is equivalent part of the system
Vytautas Siozinys © 2011 Kaunas University of Technology September 2011 | 4
Electrical energetic, transmission network operators.
Business case
Interest rate 0,12
Feasibility 100.000
Marketing 500.000
Total 600.000
Equipment
Market
price
30.000
-1.500.000
-1.000.000
-500.000
0
500.000
1.000.000
1.500.000
2.000.000
0 1 2 3 4 5 6 7 8 9 10 11 12
Time, Year
Pro
jec
t B
ala
nc
e, E
U
0
5
10
15
20
25
30
35
40
1 2 3 4 5 6 7 8 9 10 11 12
Time, Year
Eq
uip
me
nt
qu
an
tity
Vytautas Siozinys © 2011 Kaunas University of Technology September 2011 | 5
Status of the idea: experiments in laboratory
Status of the innovator:Associated professor
Department of electric power systems Kaunas University of Technology
Head of system planning and research division, Litgrid AB
Current status
Characteristic
•Efficiency;•Fast response;•Flexibility;•Reliability;
Cooperation experience with MITA
Projects in 2011
•7FP Energy Research Information day in Brussels;•7FP ICT Research Information day in Brussels;•Galileo meeting in Munich;•7FP project “Rare earth permanent magnet lifting technology” meeting in Shanghai;
Opportunities
•Public reliation;•SME startup meeting in Italy;•Invitation participate in conference in Germany;
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