1 simone as a key support for operating transmission system of plinacro authors: josip jovanovac,...
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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.
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VODNJAN
UMAG
KUKULJANOVO
OMIŠALJ
BOSILJEVO
SPLIT
PLOČE
ZABOK
LUČKO
D. MIHOLJAC
ROGATEC
B. BROD
NOVA KAPELA
POŽEGA
BJELOVAR
KUTINA
GOSPIĆ
ZADAR
JOSIPDOL
KARLOVAC
KNIN
ZAGREB
S. BROD
PULA
BELIŠĆE
OSIJEK
Slovenia
Bosnia and Hercegovina
Hungary
Italy
Montenegro
Serbia
UGSOkoli
VARAŽDIN
Existing transmission system
- 2085 km of pipelines
-18 supply points
-1 border interconection
-151 offtake stations
-1 underground gas storage
- no compressors
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VODNJAN
UMAG
KUKULJANOVO
OMIŠALJ
BOSILJEVO
SPLIT
PLOČE
ZABOK
LUČKO
D. MIHOLJAC
DRAVASZERDAHELY
ROGATEC
B. BROD
NOVA KAPELA
POŽEGA
BJELOVAR
KUTINA
GOSPIĆ
ZADAR
JOSIPDOL
KARLOVAC
BENKOVAC
KNIN
ZAGREB
S. BROD
PULA
BELIŠĆE
OSIJEK
Slovenia
Bosnia and Hercegovina
Hungary
Italy
Montenegro
Serbia
UGSOkoli
VARAŽDIN
Existing transmission system + possible future extensions
- 1000 km of new pipelines
- new border interconnections - transit
- new UGS
- compressor stations
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- microwave link PDH ring
- radio links to RTU-s
- fiber-optic network
Communication system
Supervision and Control System National Dispatching Center
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Communication system
Supervision and Control System National Dispatching Center
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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 detectionsupport for decision in real-time balancing activities
Supervision and Control System National Dispatching Center
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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
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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
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Focus on pipeline simulation (MS)
• Online system– Installed functions– Performance
• Offline simulations
• Customizations
• Benefits, experience, future
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SIMONE online - functions
• 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
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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
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SIMONE – LIVE network model
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Network balance figures
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PRSIM performanceDistribution of pressure differences
SCADA measurements vs. SIMONE online
0%
20%
40%
60%
80%
100%
0 0.5 1 1.5 2
Max24 h |P-PM| [bar]
Cu
mu
lati
ve
co
un
t
.
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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
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Test “leak”
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First detection & localization (+6 min)
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Final size & position (~45 min)
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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
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Customizations - “Stars” of control valves
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Benefits, experience, future
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