Software Specifications

• 3.2.5 Intermittent variability parameter
• 3.2.8 FIR feasible from schedule
• 3.3.1 Series Solve (CE before ECE)
• 3.4.2 Untripped AUFLS for NFR SIR
• 3.5 SIR model for CE
• 3.6.2 Untripped AUFLS for NFR FIR
• 3.6.3 Removal of limit of NFR at Risk MW values

Updated section 2.2 and added section 3.4 to include AOPO calculations.  Other minor corrections to include SI ECE 47 Hz / 30 sec window.

Revision to AUFLS to allow for block4 without df/dt (block10)

This version includes changes to incorporate the National Market for Instantaneous Reserves (NMIR). The general description of the New Zealand electricity system has been updated along with the South Island AUFLS modelling parameters.  

Update associated with implementing Wind Offer Arrangements.

Update associated with implementing National Market for Instantaneous Reserves and risk groups.

Note that the shared reserve loss calculation uses the bi-pole loss tranch value when a pole is out of service. This has no impact on security. This will be changed in the next SPD release to calculate based on the relevant mono-pole loss tranch value.

This version incorporates changes to allow SPD to schedule shared reserve across the DC link to facilitate the transition from Island based reserve markets to a national reserves market. It also includes changes to allow SPD to co-optimise risks defined as all units at a Grid Injection Point (GIP) or multiple GIPs.

Note that the shared reserve loss calculation uses the bi-pole loss tranch value when a pole is out of service. This has no impact on security. This will be changed in the next SPD release to calculate based on the relevant mono-pole loss tranch value.