SIMONE as a key support for operating

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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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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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Existing transmission system possible future
extensions
ROGATEC
Hungary
VARADIN
Slovenia
ZABOK
DRAVASZERDAHELY
ZAGREB
BJELOVAR
Serbia
LUCKO
D. MIHOLJAC
KARLOVAC
BELICE
UMAG
OSIJEK
UGS Okoli
KUKULJANOVO
KUTINA
POEGA
BOSILJEVO
JOSIPDOL
S. BROD
OMIALJ
NOVA KAPELA
B. BROD
VODNJAN
PULA
GOSPIC
Italy
Bosnia and Hercegovina
ZADAR
KNIN

• 1000 km of new pipelines
• new border interconnections - transit
• new UGS
• compressor stations

BENKOVAC
SPLIT
PLOCE
Montenegro
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Supervision and Control System National
Dispatching Center
Communication system
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Supervision and Control System National
Dispatching Center
Communication system
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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

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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 performance
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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