CP1530 ‘Introduction of a formalised process for the validation of measurement transformer ratios by Elexon’
Formal title: Introduction of a formalised process for the validation of measurement transformer ratios by Elexon
Licensed Distribution System Operators (LDSOs) currently submit transformer ratios for measurement transformers as free text, where any value can be entered. There is currently no list of valid transformer ratios or a process for the validation of the transformer ratios submitted by LDSOs. This can at times lead to erroneous data being entered and thus used in Settlement.
CP1530 will create a valid list of transformer ratios and introduce a process, documented in Balancing and Settlement Code Procedure (BSCP) 515 ‘Licensed Distribution’, where LDSOs submit transformer ratios to Elexon. On receipt, Elexon will check that the submitted ratios meet the valid format and establish a list of valid transformer ratios, to be used by LDSOs, on the Elexon Portal. A corresponding change to the Master Registration Agreement (MRA), which requires all registrations of metering systems to use a ratio selected from the valid set published on the Elexon Portal, has been raised: DTC CP 3576 – Introduction of Valid Sets for J0454 (CT Ratio) and J0455 (VT Ratio.)
Please note: CP1530 will impact the Elexon Portal.