Table: DISPATCHLOAD

DISPATCHLOAD

Name

DISPATCHLOAD

Comment

DISPATCHLOAD set out the current SCADA MW and target MW for each dispatchable unit, including relevant Frequency Control Ancillary Services (FCAS) enabling targets for each five minutes and additional fields to handle the new Ancillary Services functionality. Fast Start Plant status is indicated by dispatch mode.


Description

DISPATCHLOAD data is confidential for the current day, showing own details for participant and becomes public after close of business yesterday, and is available to all participants.

Source

DISPATCHLOAD shows data for every 5 minutes for all units, even zero targets.

Volume

Expect 40-50,000 records per day. All units are repeated, even zero targets.

Note

** A flag exists for each ancillary service type such that a unit trapped or stranded in one or more service type can be immediately identified. The flag is defined using the low 3 bits as follows:

Flag Name

Bit

Description

Enabled

0

The unit is enabled to provide this ancillary service type.

Trapped

1

The unit is enabled to provide this ancillary service type, however the profile for this service type is causing the unit to be trapped in the energy market.

Stranded

2

The unit is bid available to provide this ancillary service type, however, the unit is operating in the energy market outside of the profile for this service type and is stranded from providing this service.

Interpretation of the bit-flags as a number gives the following possibilities (i.e. other combinations are not possible):

Numeric Value

Bit (2,1,0)

Meaning

0

000

Not stranded, not trapped, not enabled.

1

001

Not stranded, not trapped, is enabled.

3

011

Not stranded, is trapped, is enabled.

4

100

Is stranded, not trapped, not enabled.

For example, testing for availability can be done by checking for odd (=available) or even (=unavailable) number (e.g. mod(flag,2) results in 0 for unavailable and 1 for available).

*** "Actual FCAS availability" is determined in a post-processing step based on the energy target (TotalCleared) and bid FCAS trapezium for that interval. However, if the unit is outside the bid FCAS trapezium at the start of the interval (InitialMW), the "Actual FCAS availability" is set to zero. For regulation services, the trapezium is the most restrictive of the bid/SCADA trapezium values.


Notes

Name

Comment

Value

Visibility

Data in this table is:

Private; Public Next-Day


Primary Key Columns

Name

DUID

INTERVENTION

RUNNO

SETTLEMENTDATE


Index Columns

Name

LASTCHANGED


Index Columns

Name

DUID

LASTCHANGED


Content

Name

Data Type

Mandatory

Comment

SETTLEMENTDATE

DATE

X

Market date and time starting at 04:05

RUNNO

NUMBER(3,0)

X

Dispatch run no; always 1

DUID

VARCHAR2(10)

X

Dispatchable unit identifier

TRADETYPE

NUMBER(2,0)

 

Not used

DISPATCHINTERVAL

NUMBER(22,0)

 

Dispatch period identifier, from 001 to 288 in format YYYYMMDDPPP.

INTERVENTION

NUMBER(2,0)

X

Intervention flag if intervention run

CONNECTIONPOINTID

VARCHAR2(12)

 

Connection point identifier for DUID

DISPATCHMODE

NUMBER(2,0)

 

Dispatch mode for fast start plant (0 to 4).

AGCSTATUS

NUMBER(2,0)

 

AGC Status from EMS
* 1 = on
* 0 = off

INITIALMW

NUMBER(15,5)

 

Initial MW at start of period

TOTALCLEARED

NUMBER(15,5)

 

Target MW for end of period

RAMPDOWNRATE

NUMBER(15,5)

 

Ramp down rate used in dispatch (lesser of bid or telemetered rate).

RAMPUPRATE

NUMBER(15,5)

 

Ramp up rate (lesser of bid or telemetered rate).

LOWER5MIN

NUMBER(15,5)

 

Lower 5 min reserve target

LOWER60SEC

NUMBER(15,5)

 

Lower 60 sec reserve target

LOWER6SEC

NUMBER(15,5)

 

Lower 6 sec reserve target

RAISE5MIN

NUMBER(15,5)

 

Raise 5 min reserve target

RAISE60SEC

NUMBER(15,5)

 

Raise 60 sec reserve target

RAISE6SEC

NUMBER(15,5)

 

Raise 6 sec reserve target

DOWNEPF

NUMBER(15,5)

 

Not Used

UPEPF

NUMBER(15,5)

 

Not Used

MARGINAL5MINVALUE

NUMBER(15,5)

 

Marginal $ value for 5 min

MARGINAL60SECVALUE

NUMBER(15,5)

 

Marginal $ value for 60 seconds

MARGINAL6SECVALUE

NUMBER(15,5)

 

Marginal $ value for 6 seconds

MARGINALVALUE

NUMBER(15,5)

 

Marginal $ value for energy

VIOLATION5MINDEGREE

NUMBER(15,5)

 

Violation MW 5 min

VIOLATION60SECDEGREE

NUMBER(15,5)

 

Violation MW 60 seconds

VIOLATION6SECDEGREE

NUMBER(15,5)

 

Violation MW 6 seconds

VIOLATIONDEGREE

NUMBER(15,5)

 

Violation MW energy

LASTCHANGED

DATE

 

Last date and time record changed

LOWERREG

NUMBER(15,5)

 

Lower Regulation reserve target

RAISEREG

NUMBER(15,5)

 

Raise Regulation reserve target

AVAILABILITY

NUMBER(15,5)

 

Bid energy availability

RAISE6SECFLAGS

NUMBER(3,0)

 

Raise 6sec status flag - see

RAISE60SECFLAGS

NUMBER(3,0)

 

Raise 60sec status flag - see

RAISE5MINFLAGS

NUMBER(3,0)

 

 

RAISEREGFLAGS

NUMBER(3,0)

 

Raise Reg status flag - see

LOWER6SECFLAGS

NUMBER(3,0)

 

Lower 6sec status flag - see

LOWER60SECFLAGS

NUMBER(3,0)

 

Lower 60sec status flag

LOWER5MINFLAGS

NUMBER(3,0)

 

Lower 5min status flag

LOWERREGFLAGS

NUMBER(3,0)

 

Lower Reg status flag - see

RAISEREGAVAILABILITY

NUMBER(15,5)

 

RaiseReg availability - minimum of bid and telemetered value

RAISEREGENABLEMENTMAX

NUMBER(15,5)

 

RaiseReg enablement max point - minimum of bid and telemetered value

RAISEREGENABLEMENTMIN

NUMBER(15,5)

 

RaiseReg Enablement Min point - maximum of bid and telemetered value

LOWERREGAVAILABILITY

NUMBER(15,5)

 

Lower Reg availability - minimum of bid and telemetered value

LOWERREGENABLEMENTMAX

NUMBER(15,5)

 

Lower Reg enablement Max point - minimum of bid and telemetered value

LOWERREGENABLEMENTMIN

NUMBER(15,5)

 

Lower Reg Enablement Min point - maximum of bid and telemetered value

RAISE6SECACTUALAVAILABILITY

NUMBER(16,6)

 

trapezium adjusted raise 6sec availability

RAISE60SECACTUALAVAILABILITY

NUMBER(16,6)

 

trapezium adjusted raise 60sec availability

RAISE5MINACTUALAVAILABILITY

NUMBER(16,6)

 

trapezium adjusted raise 5min availability


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