Question 4.1.13
Particular situations of gas transmission unavailability – Example 3.
How should the event be properly presented by using the daily capacity units (kWh/d) and how should the changing capacity values during the different hourly sub-periods be published?
By publishing three UMM messages – one for each of the sub-periods as follow:
UMM 1_001= The 1st gas day (13:00-6:00) -> 950x17/24 = 672.9 kwh/d
UMM 2_001= The 2nd gas day (6:00-6:00) -> 950x24/24=950 kwh/d
UMM 3_001= The 3rd gas day (6:00- 18:00) -> 950x12/24 = 475 kwh/d
or
By publishing one UMM message for the whole period - 3 days?
UMM 1_001= [The 1st gas day (13:00-6:00) + The 2nd gas day (6:00-6:00) + The 3rd gas day (6:00- 18:00)] / 3 = (672.9 kwh/d +950 kwh/d +475 kwh/d) /3= 699.3 kwh/d
How to calculate and correctly publish the amount of available and unavailable capacity?
The Agency’s guidance and the format for the XMLs for “Unavailabilities for gas facilities”, allow the usage of kWh/day or mcm/day as the only acceptable units for events related to gas transmission system unavailabilities.
Example: Publication of UMM in case of unavailability of gas transmission for an event that lasts several gas days.
Case :
- Event start: 2015-11-06 13:00
- Event stop: 2015-11-08 18:00
- Technical capacity in normal circumstances: 1000 kWh/h
- The event lasts 3 gas days and contains 3 sub-periods, as follows:
- 17 hours during the 1st gas day, the unavailable is 950 kWh/h
- 24 hours during the 2nd gas day, the unavailable is 950 kWh/h
- 12 hours during the 3rd gas day, the unavailable is 950 kWh/h
Description of the event and the capacity unavailability:
| Gas day: | 2015-11-06 | 2015-11-07 | 2015-11-08 | |||
| Gas hour: | Available kWh/h | Unavailable kWh/h | Available kWh/h | Unavailable kWh/h | Available kWh/h | Unavailable kWh/h |
| 6 | 1000 | 0 | 50 | 950 | 50 | 950 |
| 7 | 1000 | 0 | 50 | 950 | 50 | 950 |
| 8 | 1000 | 0 | 50 | 950 | 50 | 950 |
| 9 | 1000 | 0 | 50 | 950 | 50 | 950 |
| 10 | 1000 | 0 | 50 | 950 | 50 | 950 |
| 11 | 1000 | 0 | 50 | 950 | 50 | 950 |
| 12 | 1000 | 0 | 50 | 950 | 50 | 950 |
| 13 | 50 | 950 | 50 | 950 | 50 | 950 |
| 14 | 50 | 950 | 50 | 950 | 50 | 950 |
| 15 | 50 | 950 | 50 | 950 | 50 | 950 |
| 16 | 50 | 950 | 50 | 950 | 50 | 950 |
| 17 | 50 | 950 | 50 | 950 | 50 | 950 |
| 18 | 50 | 950 | 50 | 950 | 1000 | 0 |
| 19 | 50 | 950 | 50 | 950 | 1000 | 0 |
| 20 | 50 | 950 | 50 | 950 | 1000 | 0 |
| 21 | 50 | 950 | 50 | 950 | 1000 | 0 |
| 22 | 50 | 950 | 50 | 950 | 1000 | 0 |
| 23 | 50 | 950 | 50 | 950 | 1000 | 0 |
| 24 | 50 | 950 | 50 | 950 | 1000 | 0 |
| 1 | 50 | 950 | 50 | 950 | 1000 | 0 |
| 2 | 50 | 950 | 50 | 950 | 1000 | 0 |
| 3 | 50 | 950 | 50 | 950 | 1000 | 0 |
| 4 | 50 | 950 | 50 | 950 | 1000 | 0 |
| 5 | 50 | 950 | 50 | 950 | 1000 | 0 |
Answer: The new schema “REMITUMMGasSchema_V1.xsd” (available here) contains also “kWh/h” as an allowed unit and the schema can be already used for gas inside information reporting.
The previous schema REMITUMMGasSchema_V1_OLD.xsd without the “kWh/h” unit is still supported by ARIS and can be used for gas inside information reporting. If the old schema is used the below conversion from kWh/d to kWh/h applies. In the future (expected time: 2019/2020) the Agency will discontinue using the OLD version of the schema.
The provided example represents one event with following elements:
Event start: 2015-11-06 13:00 - Event stop: 2015-11-08 18:00
- the unavailable capacity is 950 kWh/h = 950*24 = 22800 kWh/d
- the available capacity is 50 kWh/h = 50*24 = 1200 kWh/d
Technical capacity is 1000 kWh/h = 1000*24=24000 kWh/d.