Ensuring Gas Quality in the Swedish Gas Grid

Measuring and maintaining gas quality in the Swedish gas grid involves various procedures and collaboration with industry experts. The process includes determining calorific values, injection capacities, and working with multiple feeding points to ensure uniformity. Sources from countries like Germany, Denmark, and the Netherlands provide essential guidelines. Conclusions highlight the importance of developing regulations for increasing biogas input and addressing variations in the distribution grid quality.

• Gas Quality
• Swedish Grid
• Measurement Procedures
• Calorific Value
• Industry Collaboration

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1. Measuring and ensuring the gas quality of the Swedish gas grid LAURA MALEK

2. Swedish Transmission grid

3. Variations 12.3 12.2 Calorific value [kWh/Nm3] 12.1 12.0 11.9 11.8 2015

4. Injection capacity 900 800 700 600 Stockholm V stra G taland Sk ne Halland 500 GWh 400 300 200 100 0 2008 2009 2010 2011 2012 2013 2014 2015

5. Collaborators

6. Information of interest Measuring procedures and allocation methods Grid types Determination of heating value Margin of error Verification Periodical controlls Gas grid reconstruction

7. Sources Countries/organizations Germany(DVGW: Technische Regel Arbeitsblatt G 685) Denmark (DGC: Naturgasselskabernes kontrolmanual for allokering af br ndv rdi i distributionsnettet) Netherlands (Netbeheer Nederland: Richtlijnen beheersprotocol groengas invoedingen) ISO (Natural gas - Energy determination 15112:2011)

8. Single feeding point Calorific value determined before entering distribution grid End user with measuring equipment Measuring point within grid Hs,1 Hs,1 Hs,2 Hs,1 Hs,2 Hs,2 Hs,1

9. Multiple feeding points Hs,1 Hs,3 Hs,2 A B C D B D Hs,1 Hs,1 Hs,2 Hs,BC Hs,2 A C

10. Multiple feeding points Calorific value homogenization ? ?=1 ?=1 ??,? ?? ?? Flow-weighted calorific value ??= ? Quality Tracker Simone PSIGanesi SmartSim

11. Conclusions Increasing biogas input High variations on distribution grid level Quality Tracker Lack of regulations Guidelines should be developed by industry

12. Industry standard