Idd part 1 Interfaces with bsc parties and their Agents




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5 CDCA External Inputs and Outputs

5.1 CDCA Flow Overview


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5.2 CDCA-I001: (input) Aggregation rules


Interface ID:

CDCA-I001



Source:

BSC Party



Title:

Receive aggregation rules



BSC reference:

CDCA SD 4.1, 22.2, A

CDCA BPM 3.5, 4.17, CP753, CP756


Mechanism:

Manual, by email, letter or fax



Frequency:

On demand.



Volumes:

50 per month



Interface Requirement:

The CDCA receives, from the BSC Party, Aggregation Rules for each of the following:



  1. BM Unit;

  2. Grid Supply Point;

  3. Inter-GSP-Group Connection;

  4. GSP Group;

  5. Interconnector.

The flow will include an indication whether the aggregation rules are provided as part of a transfer from SMRS, in which case there are initially only validated. Data entry only occurs once the transfer coordinator has confirmed the effective dates of the transfer.


Other information, as may be required, to support the Aggregation Rules. This may include, but shall not be limited to the following:-

network diagrams;

NGET . connection agreement;

installation documentation;


The lowest level of measurement value referred to by Aggregation Rules is the Metering Subsystem Quantity. Each Quantity represents one of the four possible quantities that can be measured by physical meters for each single energy flow (e.g. Active Import, Active Export, Reactive Import, Reactive Export), as referenced by the Metering Subsystem. A Metering Subsystem is a virtual entity consisting of the complete set of registers within a single Metering System which measure a single unique energy flow. Metering Subsystem Quantity Id is a text string consisting of the Metering System Id followed by the Subsystem Id followed by the Measurement Quantity. Here Subsystem Id is an identifier unique within the Metering System and Measurement Quantity is ‘AE’,’AI’, ‘RE’ or ‘RI’. e.g. a valid Metering Subsystem Id Quantity Id within Metering System ‘1234’ would be ‘1234SUB1AE’.
Aggregation rules are constructed from unary or binary triplets..

Binary rules are specified as triplets (identifier A, identifier B, operator), where:



identifier A or B specifies the aggregated entity (either Metering Subsystem Quantity, BM Unit, GSP, Interconnector, Inter-GSP-Group Connection, or another suitable triplet)

operator is one of (=, +, -, *, /)
Rules for BM Units, GSPs, Interconnectors and Inter-GSP-Group Connections, can only be made up of Metering Subsystem Quantity aggregations.
Rules for GSP Groups can only be made up of Metering Subsystem Quantity, BM Unit, GSP, Interconnector, or Inter-GSP-Group Connection aggregations.
Valid binary rules include:

(GSP ID, Metering Subsystem Quantity Id, operator)

(BM Unit ID, Metering Subsystem Quantity Id, operator)

(Interconnector ID, Metering Subsystem Quantity Id, operator)

(Inter-GSP-Group Connection, Metering Subsystem Quantity Id, operator)

(GSP Group ID, Metering Subsystem Quantity Id, operator)

(GSP Group ID, GSP ID, operator)

(GSP Group ID, BM Unit ID, operator)

(GSP Group ID, Interconnector ID, operator)

(GSP Group ID, Inter-GSP-Group Connection, operator)


Unary rules are specified as triplets, allowing constant transforms to be applied to meter readings.

Unary rules are specified as triplets (identifier, operator, argument), where:



identifier specifies the aggregated entity (Metering Subsystem Quantity, BM Unit, GSP, Interconnector or Inter-GSP-Group Connection)

operator is one of (=, +, -, *, /)

argument is the numeric scaling to apply. This can either be an explicit numeric factor (eg for slugging), or may be a scaling category, eg “LLF”, which means that the Line Loss Factor applicable given the Settlement Date and Period of the meter reading must be applied during aggregation.

This interface covers addition, modification and deletion of Aggregation Rules. Aggregation rules will have effective dates which will be in clock time and may be retrospective.




Physical Interface Details:



5.3 CDCA-I003: (input) Meter technical data


Interface ID:

CDCA-I003



Source:

MOA, Registrant



Title:

Receive meter technical data



BSC reference:

CDCA SD 5

BPM 4.20, CP619, CP751, CP753, CP756, CP1201


Mechanism:

Manual, by email, letter or fax



Frequency:

On demand.



Volumes:

50 per month



Interface Requirement:

The CDCA receives records of Metering Equipment Technical Details (including passwords where appropriate) associated with each Metering System, associated data collector outstation and communications facility applicable to that Metering System, as received from the relevant MOA or Registrant. The details will have effective dates which may be retrospective.


This data consists of the following:
Metering System Details

Metering System Identifier

Effective from Settlement Date

Distribution Business Id

Energisation Status

Energisation Status Effective from date

Energisation Status Effective to date

Metering System Contact Name

Metering System Contact Telephone Number

Metering System Contact Fax Number

Metering System Address Line 1

Metering System Address Line 2

Metering System Address Line 3

Metering System Address Line 4

Metering System Address Line 5

Metering System Address Line 6

Metering System Address Line 7

Metering System Address Line 8

Metering System Address Line 9

Metering System Postcode

Metering System Latitude

Metering System Longitude

Meter Equipment/Service Location

Dispensation Reference;

Dispensation Effective From Date;

Dispensation Effective To Date;

Reason for Dispensation.

Transfer flag (indicates this is a transfer from SMRS)


Outstation Details

Outstation Id

Outstation Type

Outstation Serial Number

Outstation Number of Channels

Outstation Number of Dials

Outstation PIN

Outstation Password A

Outstation Password B

Outstation Password C

Communications Address

Baud Rate

Previous Metering System Identifier

Previous Outstation Id


Outstation Channel

Outstation Id

Outstation Channel Number

Meter Serial Number

Meter Register Id

Outstation Channel Precedence (Primary, Secondary, Tertiary etc)

Pulse Multiplier

Outstation Channel Multiplier

Minimum MWh Value

Maximum MWh Value


Physical Meter Details

Meter Serial Number

Manufacturers Make & Type

Meter Current Rating

Meter Code of Practice

VT Ratio


CT Ratio

System Voltage

Number of Phases
Meter Register Details

Meter Register Id

Meter Register Multiplier

Measurement Quantity Id

Metering Subsystem Id (for Main channels only)

Number of Register Digits

Associated Meter Id (for Check channels pointing to a Main)

Associated Meter Register Id (for Check channels pointing to a Main)


Metering Subsystem Id is an identifier associated with Main channels, for the purpose of referencing filtered measurement quantities within aggregation rules supplied by a BSC Party via CDCA-I001.
Other data required by CDCA may include schematics and network diagrams from MOAs or Registrants in order to support validation of meter technical data.



Physical Interface Details:


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