SIMONE as a key support for operating transmission system of Plinacro

1. SIMONE as a key support for operating transmission system of Plinacro Authors: Josip Jovanovac, Plinacro d.o.o. Martin Styblo, SIMONE Research Group s.r.o.

2. ROGATEC VARAŽDIN Hungary Slovenia ZABOK ZAGREB BJELOVAR Serbia LUČKO D. MIHOLJAC KARLOVAC BELIŠĆE UMAG OSIJEK UGS Okoli KUKULJANOVO KUTINA POŽEGA BOSILJEVO JOSIPDOL S. BROD OMIŠALJ NOVA KAPELA B. BROD VODNJAN PULA GOSPIĆ Italy Bosnia and Hercegovina ZADAR KNIN SPLIT PLOČE Montenegro Existing transmission system • 2085 km of pipelines • 18 supply points • 1 border interconection • 151 offtake stations • 1 underground gas storage • no compressors

3. Existing transmission system + possible future extensions ROGATEC VARAŽDIN Hungary Slovenia ZABOK DRAVASZERDAHELY ZAGREB BJELOVAR Serbia LUČKO D. MIHOLJAC KARLOVAC BELIŠĆE UMAG OSIJEK UGS Okoli KUKULJANOVO KUTINA POŽEGA BOSILJEVO JOSIPDOL S. BROD OMIŠALJ NOVA KAPELA B. BROD VODNJAN PULA GOSPIĆ Italy Bosnia and Hercegovina ZADAR KNIN • 1000 km of new pipelines • new border interconnections - transit • new UGS • compressor stations BENKOVAC SPLIT PLOČE Montenegro

4. - microwave link PDH ring - radio links to RTU-s - fiber-optic network Supervision and Control System National Dispatching Center Communication system

5. Supervision and Control System National Dispatching Center Communication system

6. Supervision and Control System National Dispatching Center • Built during 2006. as integrated turn key project • real-time supervision of major entry and exit points 98% of entry and 90% of exit flow • remote flowrate/pressure control on important network nodes • SIMONE real time model + leak detection support for decision in real-time balancing activities

7. Plinacro – Transmission System Operator NOW • Technical conditions for operating transmission system • stable flat flow rates on supply points • 40% of transmission for households consumption - seasonal character • no established full transmission nomination regime • UGS flow rate set by TSO, based on actual state and partially known plans • Bussines enviroment for operating transmission system • Plinacro - unbundled TSO, 100% state owned • basic legal framework for opening gas market exist • lower legal acts in preparation (market rules, network codes etc.) • one shipper - one transmission contract • no compettion for transmisson capacity acces

8. Plinacro – Transmission System Operator IN NEAR FUTURE • transmission system extension – new border interconnections - transit • real gas market opening - new market players – new shippers • nondiscriminatory and transparent TPA • nomination, allocation, balancing - required IT support • New IT infrastructure • telereading system - all exit points daily metered and fiscal data acquired via GPRS • Gas Transmission Management System • contract management (interconnection, capacity booking) • transmission nomination process • allocation, balancing, reporting • upgrade SIMONE instalation • evaluation of capacity requests and nominations • automated scenario preparation and result presentation

9. Focus on pipeline simulation (MS) • Online system • Installed functions • Performance • Offline simulations • Customizations • Benefits, experience, future

10. State reconstruction (PRSIM) SCADA data Manual entries (PRSIM_INC) Pig tracking Leak detection and localization (LDSIM) Detection – jump of mass correction signal for network areas Localization – test & trial for nodes/milepost within area Look-ahead simulation (ZYSIM) Forecasted/scheduled flows from UDW Manual entries (ZYSIM_INC) On-request simulation Save ZYSIM as… Data preparation from UDW Computational features Quality tracking, heat dynamics SIMONE online - functions

11. SIMONE online - performance • State reconstruction (PRSIM) • Linepack always well captured – pressure readings… • Influence of manually entered offtakes • Mass correction • Flow distribution within loops • Look-ahead simulation (ZYSIM) • Flow-flow simulation starting from last state • Smoothness of concatenation with PRSIM • Mass correction in PRSIM

12. SIMONE – LIVE network model

13. Network balance figures

14. PRSIM performance

15. Leak detection & localization • Feasibility study • Leak caused by hole of equivalent diameter 30 mm is detectable within area • Localization to node/milepost not 100% • Test case • Filling new part of pipeline, flow measured but unknown to real-time model • False alarms • Known areas – few measurements & manually entered offtakes

16. Test “leak”

17. First detection & localization (+6 min)

18. Final size & position (~45 min)

19. Offline simulations • 2 offline workplaces • Usage • System development • Operation planning • Capacity studies • Highly transient behavior of Plinacro pipeline system • Flat supplies vs. modulated consumptions • Daily average static vs. Dynamic analysis

20. Customizations - “Stars” of control valves

21. Current state Online Supplies network balance data for operators Brings “another” view on readings Enables short-term what-if analysis by expert Continuous extensions and improvements Offline Useful for complex analysis Input data needed Future Online More integration for operators Redundancy GTMS project Capacity calculations Nomination handling Easy access to data “Human element” Dedicated team - user, vendor and integrator Benefits, experience, future