HomeRulebook HomeBalancing and Settlement CodeGuidance NotesSva Qualification Storyboards and Test Guidelines
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CONTENTS

  • Introduction
    • Background
    • Applicability of the Storyboards
    • Structure of the Storyboards
    • Completion of the Storyboards
    • Arithmetic Accuracy Testing
    • Performance, Capacity and Resilience Testing
  • Non Half Hourly Storyboards
    • AGS401: NHH Change of Supplier, MOA, DC and DA (concurrent)
      • Initial Conditions:
      • The Story:
      • Final Conditions:
      • Variations:
      • 1. The Customer has recently been registered as a special needs person by the local authority.
      • 2. The Supplier may use a full or skeleton registration that will impact on the content and quantities of appointment flows. A full registration is one where the initial registration contains all the required information without the need for any subsequent registration updates. A skeleton registration may imply use of the old agents by default, if no details of new ones are subsequently provided (in which case the final conditions will be appropriately different).
      • 3. The old NHHDC does not provide valid EAC/AA history.
      • 4. The new Supplier disputes the CoS reading prior to first reconciliation. A new COR is agreed with the old Supplier. The original reading is withdrawn and the new NHHDC calculates a deemed reading for the CoS date. New EAC/AA values are calculated and used in the next aggregation.
      • 5. The meter reading does not have to be COR. Alternative reading types may be used by making arrangements with the appropriate agents.
      • 6. There may be no change of Supplier, just a change of agents; or there may be only a change of one or some of the agents.
    • AGS402: NHH Change of Supplier, MOA, DC, DA, and Metering System
      • Initial Conditions:
      • The Story:
      • Final Conditions:
      • Variations:
    • AGS403: NHH Change of Supplier, MOA, DC, DA, Invalid Meter Reading from DC
      • Initial Conditions:
      • The Story:
      • Final Conditions:
      • Variations:
      • 1. The Supplier may use a full or skeleton registration that will impact on the content and quantities of appointment flows. A full registration is one where the initial registration contains all the required information without the need for any subsequent registration updates. A skeleton registration may imply use of the old agents by default, if no details of new ones are subsequently provided (in which case the final conditions will be appropriately different).
    • AGS404: NHH Change of SSC and TPR
      • Initial Conditions:
      • The Story:
      • Final Conditions:
      • Variations:
      • 1. The Supplier instructs the NHHDC to change the Profile Class of the metering point where no physical change of meter is required.
      • 2. The SMRA fails to receive the registration updates for the new metering details. As a result, exception reports are sent to the Supplier and corrective actions taken.
      • 3. The NHHDC is unable to obtain the required initial readings, so informs the Supplier and acts on its instructions.
      • 4. The reprogramming may not require all of the suggested changes to be effected.
    • AGS405: NHH Credit Meter Replaced with Prepayment Meter
      • Initial Conditions:
      • The Story:
      • Final Conditions:
      • Variations:
      • 1. Replacement with various types of PPM (key, token or smart).
      • 2. For the type of PPM chosen, the new meter configuration may not require a change of SSC.
      • 3. For Smartcard meters or any variants of Token or Key meters where the PPM Infrastructure Provider (PPMIP) obtains meter readings, the story may be extended as follows:
    • AGS406: NHH Withdrawal of Meter Reading
      • Initial Conditions:
      • The Story:
      • Final Conditions:
      • Variations:
    • AGS407: NHH De-Energisation
      • Initial Conditions:
      • The Story:
      • Final Conditions:
      • Variations:
      • 1. (None currently suggested.)
    • AGS408: NHH De-Energisation & Disconnection
      • Initial Conditions:
      • The Story:
      • Final Conditions:
      • Variations:
      • 1. (None currently suggested.)
    • AGS409: NHH Re-Energisation
      • Initial Conditions:
      • The Story:
      • Final Conditions:
      • Variations:
      • 1. The Supplier does not notify the SMRA of the re-energisation so the SMRA does not notify the NHHDA. For the day of re-energisation, the NHHDA attributes zero consumption instead of using the new EAC supplied by the NHHDC, as the Metering System is de-energised according to the SMRA. An exception is identified from an Exception Report during the Initial Supplier Volume Allocation processing.
      • Resolution: The NHHDA requests a comparison of NHHDC and SMRA data and the Supplier is notified of the discrepancy in the Energisation Status. The Supplier notifies the SMRA, who in turn notifies the NHHDA. In the next aggregation run for the day of re-energisation, the NHHDA will use the new EAC supplied by the NHHDC.
      • 2. The Meter Operator goes on site but cannot energise the Metering System due to a damaged supply cable. The Supplier is informed of this and tasks the Distributor with the energisation. The Distributor successfully energises the Meter, takes an initial Meter reading and notifies the Supplier of the successful re-energisation.
    • AGS410: NHH to HH - Change of Measurement Class
      • Initial Conditions:
      • The Story:
      • Final Conditions:
      • Variations:
      • 1. The Customer has chosen a new Meter Operator who is qualified in both Non-Half Hourly and Half Hourly market sectors.
      • 2. The day of energisation may be a BST (British Summer Time) day. Consequently the initial reading and the HH period readings will be extracted in UTC and converted as appropriate to settlement time (BST) by the HHDC.
      • 3. The proving test may fails, in which case the HHMOA must initiate a re-test by arrangement with the HHDC.
    • AGS411: NHH to HH (concurrent Change of Supplier)
      • Initial Conditions:
      • The Story:
      • Final conditions:
    • AGS412: NHH to HH (no Change of Supplier)
      • Initial Condition:
      • The story:
      • Final Conditions:
  • Half-Hourly Storyboards
    • AGS501: HH Change of Supplier, MOA, DC and DA
      • Initial Conditions:
      • The Story:
      • Final Conditions:
      • Variations:
      • 1. There may be no change of agents involved. The old and new Supplier have appointed the same HH agents for the MS. This will mean that some of the above final conditions do not apply.
    • AGS502: HH Change of LLF Class
      • Initial Conditions:
      • The Story:
      • Final Conditions:
      • Variations:
      • 1. This story may be run for a variety of meter configurations to demonstrate that the relationships between Agents, GSP Groups and LDSOs can be handled correctly. E.G Maintenance of LLF Classes for multiple LDSOs within a single GSP Group.
    • AGS503: HH Replacement of Meter & Proving Test
      • Initial Conditions:
      • The Story:
      • Final Conditions:
      • Variations:
      • 1. The HHDC may decide to use any of the 4 methods for proving the meter, making the appropriate changes to the story.
    • AGS504: HH New Metering System, Initial Registration, Energisation
      • Initial Conditions:
      • The Story:
      • Final Conditions:
      • Variations:
      • 1. Either skeleton or full registration details may be sent to the SMRA by the supplier. When the SMRA notifies the HHDA of its liability for the new MS; if full registration details are used, then subsequent instructions to the HHDA will only notify it of the new energisation status. If skeleton registration then subsequent instructions will notify the HHDA of their appointment, the HHDC appointment AND the energisation status.
    • AGS505: HH De-Energisation of Metering System
      • Initial Conditions:
      • The Story:
      • Final Conditions:
      • Variations:
      • 1. The Supplier instructs the LDSO to carry out the de-energisation. The LDSO arranges the collection of the final data with the HHDC and informs the appropriate parties when the de-energisation is completed.
    • AGS506: HH De-Energisation of Metering System, DC Not Notified
      • Initial Conditions:
      • The Story:
      • Final Conditions:
      • Variations:
      • 1. Instead of the HHDC, it may be the Supplier that requests the HHMOA to notify the HHDC of the de-energisation and of the final cumulative meter reading.
      • 2. The Supplier may instruct the LDSO to carry out the de-energisation. The LDSO arranges the collection of the final data with the HHDC and informs the appropriate parties when the de-energisation is completed.
    • AGS507: HH De-Energisation & Disconnection of Metering System
      • Initial Conditions:
      • The Story:
      • Final Conditions:
      • Variations:
      • 1. The Supplier instructs the Distributor to carry out both the de-energisation and disconnection on the same day. The Distributor arranges the collection of the final data with the HHDC and informs the appropriate parties when the disconnection is completed.
      • 2. The disconnection occurs several days after the date requested.
    • AGS508: HH Re-Energisation of Metering System
      • Initial Conditions:
      • The Story:
      • Final Conditions:
      • Variations:
      • 1. The MS may be energised by the LDSO instead. In this case, the HHMOA receives notice of the energisation and initial register readings from the LDSO and then informs the HHDC.
    • AGS509: HH New UnMetered Supply (Equivalent Metering), Initial Registration, Energisation
      • Initial Conditions:
      • The Story:
      • Final Conditions:
      • Variations:
      • 1. (None currently suggested)
  • Guidelines to Arithmetic Accuracy Testing
    • Background
    • Scope of Arithmetic Testing
  • Guidelines to Performance, Capacity and Resilience Testing
    • Background
    • Scope of Elexon Performance and Capacity Testing
      • Meter Readings
      • Data Aggregation
      • Variation Activities
    • Scope of Elexon Resilience Testing
  • Further Information

SVA Qualification: Joint Storyboards and Test Guidelines V12.0

Effective From Date:13/02/2023
Status:LIVE
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