Meter Technical Details for Smart Meters (CP1388) Education Session Adam Lattimore 20 June 2013
Agenda Smart Metering Journey • CP1388 Solution • CP1388 Progression & Next Steps • Open Discussion • Are there any new points of view you want the Panel to consider? • Are there any likely alternatives to be raised? • 1
Smart Metering Journey Steve Francis 20 June 2013
November 2011 Legacy System Changes (Enduring) paper produced by DECC • Set out scope for potential changes to legacy systems to support • Smart Metering Established principles and high level requirements for registration, • meter technical details, installation requests, meter readings and communications with DCC Changes to be progressed under Smart Metering Regulation Group • (SMRG), Working Group 4 (WG4) 3
SMRG WG4 SMRG WG4 acts as a steering group for development of • consequential legacy system changes Chaired by DECC • Includes representatives from Parties, Party Agents, Code • Administrators and Ofgem Identifies requirements to be assessed and progressed under • existing industry change processes Intention to avoid use of Secretary of State powers where at all • possible 4
Principles for Meter Technical Details MOAs retain ownership of physical meter details • Suppliers take on ownership of configuration details (SSCs, register • info) Suppliers take on responsibility for sending MTDs to relevant • participants, in place of their MOA, using existing D0149/D0150 data flows Security and communication details to be handled separately by • DCC 5
February 2012 BSC-MRA Working Group established by ELEXON to consider • details and provide a response to SMRG WG4 Group members were put forward by interested parties following • an invitation to the BSC and MRA change co-ordinator mailing lists. 6
Workgroup Membership “Big Six” Suppliers 6 small – medium Suppliers (@1-2 per meeting) 1 - 3 LDSOs 1 - 3 independent Supplier Agents per meeting + ELEXON, Gemserv, Ofgem (1 meeting) Included 2 SVG Alternates & 1 SVG member Included a number of SMIP BPDG members 7
February 2012 Key points identified by the Group: • • More analysis required on handling of comms hub failures • Noted benefits in re- using D0149/D0150 but didn’t want to rule out using new flows as they may be less risky • A potential minimal change option may exist where MOA distributes, but not necessarily generates, complete MTDs 8
March 2012 Initial assessments discussed by SMRG WG4 • Recognition that MTDs have less of an impact on DCC than • registration No requirement from SMIP to deliver changes in a particular way • No particular preference on solution other than that it supports the • SMIP efficiently and effectively MTD solution to be driven by industry preferences • 9 •
Further development Working Group continued development of potential solution • Analysis of scenarios to cover major business processes: • New connection • Meter replacement (dumb-smart, smart-smart) • Handling of comms issues • Change of Agent (NHHDC and MOA) • Change of Supplier • Two key issues to be considered: • Distribution of MTDs by MOA or Supplier • Use of current flows versus modified/new flows • 10
Distribution of MTDs Initial approach involves distribution of MTDs by Suppliers • Group applied alternative MOA distribution approach to business • scenarios to identify benefits and issues Approach found to minimise process and system impacts on • participants However, analysis reveals more complex distribution chain, with • more dependencies and potential points of failure Group’s preference was for distribution of MTDs by Suppliers • 11
Current flows v modified/new flows Group considered whether current flows should be re-used or • whether modified/new flows would be more appropriate Arguments were set out on either side and are summarised in the • next section of the presentation Group’s preference was for new flows so as to minimise enduring • process risk over immediate implementation risk 12
May 2012 – September 2012 Further development of potential changes based on principles • agreed so far Detailed discussion on data items and low level process steps • Strawman solution drawn up involving changes to BSCP504, • BSCP514 and the DTC Solution issued for consultation prior to raising a formal Change • Proposal 13
Consultation Respondents (19) “Big Six” Suppliers 5 small Suppliers 3 LDSOs 4 independent Supplier Agents 1 system solutions provider 14
The CP1388 Solution Jon Spence 20 June 2013
Meter Technical Details Currently Meter Technical Details are sent on – • Non Half-hourly Meter Technical Detail (D0150) • Notification of Mapping Details (D0149) • Auxiliary Meter Technical Details (D0313) – Advanced Meters only • MRA-owned data flows • Contain non-Settlement data – e.g. Meter Asset Provider, re-cert • dates, non-Settlement registers Register mappings, multiplier, no of register digits are needed by • the NHHDC (and to a some extent the Supplier and LDSO) to interpret the readings from the Meter (e.g. correctly allocate day & night usage) 16
The big change . . . MAN AND A VAN WAN AND A HAN 17
traditional metering Supplier MTD NHHMOA MTD NHHDC MTD LDSO 18
smart metering (configuration details) WAN command / response DCC DCC User Gateway Request / response Config details Supplier NHHMOA Config details NHHDC Config details LDSO 19
D0150 D0149 SSC SSC MSNSFC TPR Register Id MSNSFC Meter Register Type Register Mapping Coefficient Number of Register Digits Meter Register Multiplier Supplier / config details Meter Id Meter Operator / device details Manufacturers Make & Type MAP Id DCC Date of Meter Installation Comms Details Certification Date Security details 20
smart metering (configuration details) WAN command / response DCC DCC User Gateway Request / response Config details Supplier NHHMOA Config details NHHDC Config details LDSO 21
smart metering (configuration details) WAN command / response DCC DCC User Gateway Request / response Config details Supplier NHHMOA NHHDC LDSO 22
Smart metering (device details) Supplier Device details NHHMOA Device details NHHDC LDSO Device details 23
Smart metering (device details) Supplier Device details NHHMOA NHHDC LDSO 24
What Settlement risk does CP1388 seek to address? NHHDC needs configuration data to correctly interpret readings • The current source of this data, the NHHMOA will no longer be • responsible for configuring meters under the DCC model, so will not know the configuration details Whilst the Supplier could provide configuration details to the • NHHMOA for onward transmission to the NHHDC, this would add an additional step to a process that already doesn’t work well The NHHMOA would just be performing a ‘pass through’ function, • which is unlikely to be as efficient as sending the data directly between the participant that carries out the configuration (the Supplier) to the participant that needs the configuration (the NHHDC). 25
SMIP BPDG LEGACY SYSTEM CHANGES PAPER OPTION 1 – Supplier logical owner, but discharges responsibility • for configuration via the NHHMOA OPTION 2 – NHHMOA sends a D0150 as a single rate, Supplier • updates with actual config and sends revised D0150 and D0149 to NHHDC and LDSO OPTION 3 – NHHMOA sent copies of DCC request/responses by • Supplier and populates D0150/D0149 as at present OPTION 4 – as option 2 but with changes to existing D0150/D0149 • (e.g. Using optional fields, rather than defaulting to single rate) OPTION 5 – as option 2 but using new flows • 26
NHHMO remains responsible (options 1 and 3) » Least change (in terms of introducing new flows and processes) » Use existing flows and distribution method » Responsibility for distributing config. data doesn’t rest with the originator of the data » Adds an additional step into a process (MTD distribution) that already doesn’t work well (“Top 10” Settlement risk under PAF) » The NHHMOA provides a “post - box” function and adds no value 27
Supplier responsible for distributing config. Details (Options 2 and 4) Skeleton full D0150 D0150 NHHDC METER SUPPLIER & OPERATOR LDSO D0149 28
D0150 D0149 SSC SSC MSNSFC TPR Register Id MSNSFC Meter Register Type Register Mapping Coefficient Number of Register Digits Meter Register Multiplier Supplier / config details Meter Id Meter Operator / device details Manufacturers Make & Type DCC MAP Id Comms Details Certification Date Security details 29
Supplier responsible for distributing config. details (Option 5) Device Device details details NHHDC METER SUPPLIER & OPERATOR LDSO Config Config details details 30
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