EPCC 2015 Opening remarks - EPCC Workshop · -19 PMUs on 400 kV level -15 PMUs on 220 kV level -16...

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


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


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


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


Significant reduction of flows on SI/I border


-500

0

500

1000

1500

2000

jan

.09

feb

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mar

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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


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


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



• Installed on all interconnecting TL and all areas predefined for

island operation

• Exchange of data with APG, RTE, TERNA, Swissgrid, Amprion and

Energinet.dk.


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


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


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


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!

[email protected]

EPCC 2015

EPCC 2015 Opening remarks - EPCC Workshop · -19 PMUs on 400 kV level -15 PMUs on 220 kV level -16...

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