National Grid Gas Distribution, Northern Gas Networks, SGN and Wales and West Utilities
NGGD Andy Finch – Project Manager (lead GDN) NGGD Andy Newton – Portfolio Manager NGGT Roger Wood – Senior Gas Quality Engineer NGN B Hanley – Integrity Engineer-Metering & Gas Quality SGN S Stephenso
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The DANINT software developed by GL is installed in every Ofgem directed site primary to collect CV data that is submitted into the billing process on a daily basis, it is also required to meet the gas transporters obligation under the gas calculation of thermal energy regulations to collect and archive calorific value, gas composition and metering data.
The DANINT software will be developed by incremental innovation and tested to demonstrate compliance, for example configuration of the FWACV system and upgrade of the DANINT software will be undertaken to facilitate the adoption of Ethernet technology and communication with other gas chromatographs and gas property measurement technologies, whilst preserving backward capability.
The first stage of this project was completed in December 2010 with the development of DANINT 12c that was developed to enable the recently approved Daniel 2350a controller with new processor card and the model 700 gas chromatograph to be installed at site, also within the first stage to ensure that any flows which may occur in between scans are captured, ensuring that associated CV and appropriate averaging takes place, the
EOD module was updated to use the difference in the ‘Offtake Cumulative Volume Total’ this was tested and approved for use by Ofgem.
The objective of this project is to review and trial engineering software for data management of gas composition, Calorific Value and Volume Data and overall the proposed developments will lead to improved accuracy custody transfer metering and consequently reduction in the number of metering errors, as a result operational costs will be avoided by reducing the number of required site visits. By undertaking this development work means that the gas industry as a whole can share the overall costs, knowledge, risk and subsequent benefit from development and testing of equipment and software.
By providing a robust method of monitoring CV for the billing process and monitoring metering and gas quality data for detection and reconciliation of errors it ensures that there is a reliable gas supply, importantly full resilience testing including simulations will test various scenarios, this will mitigate against errors for custody transfer measurements, avoiding issues of non-compliance leading to a loss of reputation and possible challenge by third parties.
The new software and equipment will be more efficient by at least 65%, it is expected that the cost will reduce from £64,400 to £22, 540. This solution is expected to last 5 years and therefore the full life cycle savings for each site (based on 20 sites), however it is assumed that each operator will deploy the solution over 10 sites only during 5 years following project completion, therefore the saving per operator is £104,650.
If the solution is approved by Ofgem there will be two solutions available for operator use, the model 700 solution will be more cost effective than the model 500 and will also enhance the viability of injecting other gas sources. The software can be pre-loaded when a new model 700 analyser is installed. The software is also compatible with existing systems when fitted with the new processor card.