The Reserve Management Tool
The inputs to the SPD solver are shown in the figure and table below (adapted from Transpower's Reserve Management Tool (RMT) functional specification). There are two broad categories of input:
- Energy and reserve offers from market participants
- Parameters that define the Reserves requirement are calculated mostly by a software application: the RMT.
| Term |
Explanation
|
- Generation Offer
|
- Offer made to supply energy by generator
|
- Reserve Offer
|
- Offer made to supply reserve by a Generation Unit
|
- FIR
|
- Fast Instantaneous Reserve
|
- SIR
|
- Sustained Instantaneous Reserve
|
- Interruptible Load Reserve
|
- Reserve available from the reduction of load
|
- Partly Loaded Reserve
|
- Reserve available from increasing generation from unused generation capacity
|
- Tailwater Depressed Reserve
|
- Reserve available by implementing tail water depression in a hydro generator
|
- Load Bids
|
- Bids made by consumers for supply at a GXP
|
- Load Forecast
|
- The estimated load forecast given for each trading period
|
- FIR_RISK_MW
|
- The risk corresponding to the required FIR. Applies to ACCE, DCCE (CE) and ECE.
|
- SIR_RISK_MW
|
- The risk corresponding to the required SIR. Applies to ACCE, DCCE (CE) and ECE.
|
- FIR_MW
|
- The required FIR. Applies to ACCE, DCCE (CE) and ECE
|
- SIR_MW
|
- The required SIR. Applies to ACCE, DCCE (CE) and ECE
|
- CE
|
- Contingent Event
|
- ECE
|
- Extended Contingent Event
|
- RAF
|
- Risk Adjustment Factor. Four different RAFs exist for each island, for CE and ECE for FIR and SIR respectively. To achieve the required reserve, the RAF is multiplied by the risk after deducting the Net Free Reserve.
|
- NFR
|
- Net Free Reserve. The offset from the risk that the RAF is applied to.
|
- ACCE
|
- Contingent Event caused by the loss of (usually) one generator unit.
|
- DCCE
|
- Contingent Event caused by the loss of (usually) one HVDC pole.
|
- Rampupmax
|
- Calculated by RMT. Quantifies the maximum transient overload power that the HVDC link can transfer at the inverter after a Contingent Event, not taking any AC constraints into account.
|
- Halfpole Rampupmax
|
- Calculated by RMT. Quantifies the maximum transient overload power that the HVDC halfpoles can transfer at the inverter after a Contingent Event, not taking any AC constraints into account.
|
