Imbalance (Trip) Table
About
The Trip Table provides a list of all units in the market that have availability levels (MEL) dropping below generation (EMV). This indicates where a power station is unable to meet its planned generation and has been deemed to have 'tripped'.
The data can be filtered by location, fuel, unit and specific values such as MEL.
Note that moving left and right when target time has been chosen by period will move from one settlement period to the next. This will take the average values across the settlement period. Within the settlement period levels of generation will change minute-to-minute and so LIVE and Custom Time allow for the selection of either the current position or the position at a particular time.
Included Data
The imbalance volume is calculated as the maximum of zero and the generation subtracting the availability, ie the levels of generation that cannot be achieved because of insufficient availability.
The availability figure used is the Max Export Limit availability data
(the maximum level at which the BM Unit may be exporting to the
GB Transmission System at the Grid Supply Point), with units having an obligation to re-declare
their Max Export Limit (MEL) whenever their availability reduces
(for instance after a failed start).
The generation figure used is the levels of post-balancing generation after National Grid has adjusted generation
within gate closure.
Data Service
The data for the Imbalance (Trip) Table table can be extracted from the API. The parameters are as follows:
| Code |
Required/Optional |
Description |
| chart |
Required |
triptable
|
| format |
Required |
The type of format. The value could be xml or csv. (See 'formats' action)
|
| targettime |
Required |
The time selection (as in the URL on the matching
charts), e.g. live or 0 to be current
period or -2 to be current period minus two |
|
Example :
enprompt.netareports.com/dataService?username=xxx&password=yyy&format=xml&action=data&chart=triptable&targettime=live
|
|