EPCC 2015 Opening remarks - EPCC Workshop · -19 PMUs on 400 kV level -15 PMUs on 220 kV level -16 PMUs on 110 kV level • Installed on all interconnecting TL and all areas predefined
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Opening remarks Zoran Marčenko, ELES
Bled, 18.5.2015
EPCC 2015
• Till 1991 electric energy sector in Slovenia was
organized in vertical public enterprise EGS
• In 1991 unbundling process split vertical organization
in 13 independent companies: one transmission
company, five distribution companies and eight
production companies
• In 1991 ELES was established as transmission
company acting as single buyer for electricity
• In 2000 process of liberalization started. ELES was
transformed in Transmission system operator
History
Transmission network
Lenght of transmission lines:
•400 kV – 508 km
•220 kV – 328 km
•110kV–2.542km (1.736km ELES)
Number of transformers:
• 400/110 kV – 5
• 400/220 kV – 3
• 220/110 kV – 10
NEK
TEŠ
Beričevo
Divača
Podlog
Maribor
Krško
Okroglo
400 - kV line
Kleče
Cirkovce
220 - kV line
TE - TOL
TET
TEB -
110 - kV line
Telecommunication network
• ELES has a sophisticated and
high-capacity Telecommunication
Network:
• Optical cables - 1350 km ,
• SDH/DWDM (ECI Telecom)
network built in the form of loops
with110 nodes (2; 34; 155; 622;
2.500 Mb/s, 10 Gb/s),
• IP/VPN/MPLS (Juniper, Extreme)
network with131 nodes (100 M,
1G, 10 G Ethernet),
• New DCN4TSO Network for new
EMS System (73 Nodes)
IP/VPN/MPLS Network
Electric power system - production
Installed production capacity in 2014
• Total : 4144 MW
Electric power system - production
Nuclear; 696 MW; 17 %
Thermal; 1760 MW; 44 %
Hydro; 951MW; 24 %
PHPP; 180 MW; 4 %
Renewable; 447,8 MW; 11 %
Installed production capacity of
renewables in 2014
• Total : 557 MW
Electric power system - production
Small Hydro; 113 MW; 20 %
Solar; 262,4 MW; 47 % Wind;
3,4 MW; 1 %
Biogass; 36,7 MW; 7 %
Biomass; 2,2 MW; 0 %
Cogeneration; 139,4 MW; 25 %
Production in 2014
• Total : 16281,9 GWh
Electric power system - production
Nuclear; 6060,3 GWh;
37%
Thermal; 3347,5 GWh;
20 %
Hydro; 5521 GWh; 34 %
PHPP; 273,4 GWh; 2 %
Renewable; 1079,7 GWh; 7%
Consumption in 2014
• Total : 13590 GWh
• Peak hour : 1893 MW (29.01.2014)
Electric power system - Consumption
Direct consumers;
2083 GWh; 15 %
Distribution level; 10840,7
GWh; 80 %
Pump with Losses;
666,4 GWh; 5 %
730
680
950 950
1400
1200
0
400
800
1200
1600
SI->IT IT->SI SI->AT AT->SI SI->HR HR->SI
SI->IT IT->SI SI->AT AT->SI SI->HR HR->SI
Cross border capacities - NTC
NTC in 2014
Total NTC: Export 3080 MW Import 2830 MW
Cross border capacities - allocation
Slovenia – regional crossroad
Cross border capacities - allocation
SI-IT border (part of CSE region) • Yearly, Monthly and Intraday auctions performed by auction office
CASC located in Luxemburg
• On daily level Market Coupling performed by BSP (Slovenian Power
Exchange) and GME (Italian Power Exchange)
• Since February 2015 SI-IT border part of MRC (Multi Regional
Coupling) solution: MRC currently covers 19 European countries
SI-AT border (part of CEE region) • All auctions for cross border transmission capacities performed by
auction office CAO located in Germany
• Intraday: first come first serve, performed by ELES
SI-HR border (part of SEE region) • All auctions for cross border transmission capacities performed by
auction office CAO
• Intraday: first come first serve, performed by ELES
• Strongly interconnected
with neighbors:
• Four 400 kV OHL
• Four 220 kV OHL
• Two 110 kV OHL
• Vivid crossborder
market activities
• Exposed to high transit
power flows
Operational challenges
As consequence transmission grid is
exposed to:
• Large energy flows from
periodically excessive production
of renewables from North, hydro
from East and Nuclear from West.
• Energy flows most of the time in
direction to Italy.
• Appearance of discrepancy
between commercial and physical
flows due to loop flows of energy.
• Consequence is operation under
severe conditions with heavier
loaded network somethimes close
to operational limits
• Need need to improve
predictability and observability
Operational challenges
• Diversity of the solutions: o New investments in network
o International cooperation
o Improvement in management of operation -
Smart grid solutions
Operational solutions
Melina (HR)
Kainachtal (A)
RTP Krško
Tumbri (HR)
Redipuglia
(I)
Žerjavinec
(HR)
Obersielach
(A)
RTP
Kleče
Pehlin
(HR)
Padriciano
(I)
RTP Maribor
RTP
Cirkovce
RTP Podlog
RTP
Okroglo
RTP Divača
RTP
Beričevo
Heviz (H)
OHL 2x400 kV Cirkovce- Pince (2018)
Thermal capacity = 2 x 1.330 MW Udine (I)
OHL 2x400 kV Okroglo-Udine
(after 2025) Thermal capacity = 2 x 1.870 MW
1000 MW HVDC CL Divača-Salgareda (2022)
Thermal capacity = 1.000 MW
OHL 2x400 kV Divača-Kleče-Beričevo-Podlog-Šoštanj-Cirkovce upgrade from 220 kV to 400 kV
(2025) Thermal capacity = from 320 MW to 2 x 1.330 MW
Žerjavinec
(HR)
Development plan
Realization of listed investments is often hindered
because of:
- Enlarging environmental protection (Natura 2000)
•
•long lasting acquisition of environmental consensus
- Strong and long lasting opposition of local communities
• Consequently long lasting acquisition of on site
permissions for erecting
Development plan
• Development and implementation of operational
requirements and standards:
- Operational Handbook in Regional group Central Europe
within ENTSO-E
- Network codes in ENTSO-E
- compliance monitoring (self assessment and on site audit)
• Coordination of operation on regional (RSCI cooperation-
TSCNET and CORESO) and european level:
- in real-time phase for security of supply with data exchange
(Electronic Highway, European Awarness System, quality
check of congestion forecasts, etc.)
- in planning phase for security assessment (including outage
planning, congestion forecasts and remedial actions) and
capacity calculation (yearly, day ahead and intraday)
- training of operators
Coordination of investment plans – European projects of
Interest
International cooperation
Improvement in management of operation – Smart grid
• New state-of the-art SCADA/EMS system from
ABB – start of operation this week
• Phase shift transformer (PST) – in operation
since 2010
• Reactive power compensation devices – in
development
• Virtual power plants (VPP) – in development
• Wide Area Measurement System (WAMS) – in
operation since 2006
• WAMPAC project – in development
• CIM model – in operation since 2005
• CIM based solutions: SCALAR , SUMO,
Operational statistics
Introduction of contemporary technological solutions
Many of them were developed in cooperation with domestic know-how
(institute Electrical Institute Milan Vidmar from Ljubljana, Faculty of
electrical engineering from Ljubljana, industry)
PST in SS Divača
• Voltage level 400 kV on OHL 400 kV Divača-Redipuglia
• Power 1200 MW (2 parallel units 2 x 600 MVA)
• Angel ± 40º
• In operation from December 2010
Smart grid solussions - PST
Before 2011 transit of loop flows was growing:
• Peak value in 2010 was 1988 MW exceeding domestic
consumption in value
• Huge difference between physical and commercial flows
• Very often violation of internal n-1 criteria and even stability
limit
• All internal countermeasures were insufficient
• Need for regional mutual remedial actions – expensive
solution
• Consequence was limited value of NTC
Operation of Phase Shifter Transformer in SS Divača since the
end of 2010:
• Controlling of loop flows within secure limits
• Lowering of difference between physical and commercial
flows
• Permanent maintaining of security of operation internaly
and on regional level (Pentalateral cooperation on northern
Italian border)
• Consequence is significant increase of NTC
Smart grid solussions - PST
Significant reduction of flows on SI/I border
Smart grid solussions - PST
-500
0
500
1000
1500
2000
jan
.09
feb
.09
mar
.09
maj
.09
jun
.09
jul.0
9se
p.0
9o
kt.0
9n
ov.
09
jan
.10
feb
.10
apr.
10
maj
.10
jun
.10
jul.1
0se
p.1
0o
kt.1
0d
ec.1
0ja
n.1
1m
ar.1
1ap
r.1
1m
aj.1
1ju
l.11
jul.1
1se
p.1
1n
ov.
11
dec
.11
jan
.12
mar
.12
apr.
12
jun
.12
jul.1
2av
g.1
2o
kt.1
2n
ov.
12
dec
.12
feb
.13
mar
.13
Flo
ws
[MW
W
Flows on SI/I border commercial flows
physical flows
Differences between commercial and physical
power flows through the European network in
2010
Smart grid solussions - PST
2404
151
153
151640
142
109
1688
560
76
1353
412
32
518
28
489
496
368
270
145
77
13
61227
12
299
62
170
192
270
161
160
192
283 132
119
Differences between commercial and physical
power flows through the European network in
2011
Smart grid solussions - PST
Europe
Iceland
1974
44
716
162
1725
208
158
1438
444
48
95256
558
628
93
157
258
10
9
138
120
100
39
8
28
228
259
61
84
35
233
235
453
160
45
9
9
283
281
41
Demand side management (DSM)
Smart grid solussions - DSM
• Since 2013 in operation 27 MW of industrial load
as tertiary reserve
• Huge potential in industry
• Low interest because of low price of electricity –
small income versus commodity and business
model
• Study phase for implementation in secondary
reserve
Virtual power plants (VPP) • Study to define guidelines for including VPPs in
tertiary reserve
• Pilot project with ELES diesel electric generators
for un interruptible power supply
Smart grid solussions - VPP
WAMS – Wide area measurement system
Smart grid solussions - WAMS
• Network of 50 fixed PMUs and 2 mobile units with 3 PMUs each:
- 19 PMUs on 400 kV level
- 15 PMUs on 220 kV level
- 16 PMUs on 110 kV level
• Installed on all interconnecting TL and all areas predefined for
island operation
• Exchange of data with APG, RTE, TERNA, Swissgrid, Amprion and
Energinet.dk.
Smart grid solussions - WAMS
PDC – WAProtector (Elpros, d.o.o.)
PMUs – ABB RES521 & Arbitel 1133A
Configuration of ELES WAMS
• REASONS
- High, volatile transit flows
- Low-frequency oscillations with high peak-to-peak amplitude
- Local high-frequency oscillations with low peak-to-peak amplitude
- Monitoring the reconnection of refurbished generators
- Monitoring and controlling primary and secondary reserve deployment
- Controlling of island operation and reconnection
- Higher wide area observability through exchange of PMU data
- Post mortem analysing of events
- Back up system for SCADA/EMS system
- Possibility for time synchronised data transfer from WAMS into
SCADA/EMS system
Smart grid solussions - WAMS
Wide Area Monitoring, Protection and
Control (WAMPAC)
• Project to establish the system for geographicaly dispersed
supervision, management and protection:
- Oscillation detection and identification system
- Determination of curative measures
- Curative measure deployment
• Goal: to improve system stability an to maximize the
transfer capability on transmission networks without risking
system performance
Smart grid solussions - WAMPAC -
• to improve reliability and safety of operating the
network, especially in cases of increased load flows
through existing transmission network infrastructure.
• to improve exploatation of transmission network
Smart grid solussions - SUMO
SUMO - System for assessing of operating
real-time limits
Smart grid solussions - SUMO
Weather assesment and
forecast
SUMO BUS
ONAP
SUMO BUS data
structures keep
measured and
calculated data from
different SUMO
subsystems
SUMO
DB
ZMZMDTR
subsystems
LF
NOV
LODF DTR
Forecast of Loads in
Network Nodes
Load Flow Calculations
Load Flow for N-1 state
SCADA
ODIN
server
Physical Conductor
Data and Power Line
Spatial (GIS) Data,
System Configuration
Data
Commercialy available
DTR subsystems
OIAP
Exceptional Weather
Data Notification
ODIN VIS –
Visualization Platform
Main SUMO’s subsystems:
• Dynamic Thermal Rating on a
System Level
• Short Term Weather Forecasts
along the line corridor (+3h)
• Short Term Load Forecasts
• N-1 Load Flow Analyses and
Line Outage Distribution
Factors
• Exceptional Weather Data
Alarms
First phase of the project on four
TL is finished
Installation on 14 critical TL is in
progress
Finaly all other TL will be equiped
with weather condition detection
using available measurement and
forecast-ALADIN
DV 400 kV Beričevo - Podlog
DV 220 kV Beričevo - Podlog
-2h -1h-3h
50%
100%
93 %+1h +2h
50%
100%
93 %+3h
-2h -1h-3h
150%
100%
112 % 34'+1h +2h
50%
100%
109 % 42'+3h
Smart grid solussions - SUMO
Weather conditions • temperature • wind speed and direction • solar radiation
Line orography
Weather influence on conductor temperature
Measured current
Imax
DTR concept
ODIN – advanced visualization of power system
data
Smart grid solussions ODIN
• Advanced visualization of voltage profiles, voltage phase angles,
reactive power flows and power lines loading (real time, historian,
simulation results).
• Configurable from the CIM XML
SCALAR - lightning detection system and
overhead lines outage correlator
• In operation since 1999
• Precise location of strike
• Real time weather conditions
• Weather forecast
Smart grid solussions - SCALAR
Thank you for your attention !
Welcome to EPCC 2015! Welcome to Slovenia!
zoran.marcenko@eles.si
EPCC 2015
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