2016 INTEGRATED TRANSMISSION PLAN SCHEDULES SEPTEMBER 2016

Transcription

1 2016 INTEGRATED TRANSMISSION PLAN SCHEDULES SEPTEMBER 2016

2 Contents 1 Expenditure overview Summary of all capital and operating expenditure 2 Base capital expenditure Capital expenditure by asset class 3 Base capital expenditure deliverables Deliverables by asset class 4 Operating expenditure Operating expenditure by category 5 Major capital expendtiure approved projects Forecast expenditure for approved major projects 6 Major capital expenditure outputs Project outputs for approved major projects 7 Major capital expenditure under development Timing and expenditure estimates for major projects under development 8 Output measures Service targets 2

3 Expenditure overview This schedule presents an overview of all forecast expenditure during regulatory control period two and three ( and ). All figures are presented in real terms using 2015/16 prices. For capital expenditure (capex) we present the value of assets to be commissioned (rather than expenditure amounts) and include the forecast cost of interest during construction. This approach is consistent with the way our base capex allowances are set. Base capex excludes major projects and listed projects. Major projects are enhancement and development (E&D) projects with a value in excess of $20 million. Listed projects are large reconductoring projects. Major capex schedules provide further information on the total cost of approved major projects and projects under development. Capital expenditure value, 2015/16 prices value, 2015/16 prices ($m) Major capex approved Major capex under development major project capex Listed capex under development Grid R&R 1 transmission lines Grid R&R 1 AC stations Grid R&R 1 secondary assets Grid R&R 1 HVDC Grid R&R 1 other Grid E&D ICT Business support Base Capex , ,263.2 Indicative target savings 3 (30.0) (62.0) (69.0) (1.0) (15.3) (177.3) listed and base capex , ,300.0 capex (major, listed and base) , ,424.6 Operating expenditure ($m) 2015/16 prices 2015/16 prices RCP Grid maintenance projects Grid routine maintenance ICT grid ICT business support Corporate operating expenditure , , Replacement and refurbishment 2 Enhancement and development 3 Indicative target for base and listed projects in 3

4 Base capital expenditure deliverables This schedule presents forecast base capex deliverable during broken down by asset class. The schedule compares forecasts between our 2015 ITP and our 2016 update. Deliverables refers to standard 'units' delivered under each portfolio. We only present deliverables for replacement and refurbishment (R&R) portfolios with relatively uniform unit costs. Base capex deliverables 2015 ITP 2016 ITP Asset class and portfolio Sub-class Units TL Tower and poles Tower Towers (replaced) TL Tower and poles Pole Poles (replaced) TL Tower and poles Paint Towers (painted) , ,556 TL Foundation Foundation Foundations (refurbished) TL Foundation Grillage Grillages (refurbished) , ,881 TL Condutors and insulators Conductor - - TL Condutors and insulators Insulators Insulators (replaced) 940 1,453 1,386 1,257 1,362 6, ,450 1,352 1,395 6,025 TL Condutors and insulators Access - - ACS Outdoor 33kV switchyards Outdoor to indoor conversion Conversion to indoor switchyard ACS Outdoor circuit breakers Outdoor circuit breakers Circuit breakers (replaced/new) ACS Indoor switchgear Indoor switchgear - - ACS Power transformers Power transformers Power transformers (replaced/new) ACS Buildings and grounds Buildings and grounds - - ACS Buildings and grounds Buildings and seismic - - ACS Reactive power Dynamic reactive power - - ACS Power cables Capacitors and reactors - - ACS Power cables Power cables - - ACS Primary equipment Structures and buswork - - ACS Primary equipment Instrument transformers Instrument transformers (replaced/new) ACS Primary equipment Disconnectors and Earth switches Disconnectors (replaced/new) ACS Primary equipment Other station equipment - - SA Substation management systems Substation management systems 1 Remote terminal and clocks, HMI (replaced/new) SA Secondary systems Metering Transient fault recorders (replaced/new) SA Secondary systems Bus protection Buszone and coupler protection (replaced/new) SA Secondary systems Line protection Line protection scheme (replaced/new) SA Secondary systems Transformer protection Transformer protection scheme (replaced/new) SA Secondary systems Batteries and DC systems Battery / charger (replaced/new) SA Secondary systems Feeder protection Feeder protection scheme (replaced/new) We have presented substation management systems deliverables as modified through the evaluation process. 4

5 Operating expenditure This schedule presents forecast operating expenditure during and. The schedule compares forecasts between our 2015 ITP and our 2016 update. All figures are presented in real terms using 2015/16 prices. Operating expenditure ($m) 2015 ITP 2015/16 prices 2016 ITP 2015/16 prices Opex category Sub-category Grid Maintenance projects AC stations All assets Grid Maintenance projects transmission lines All assets Grid Maintenance projects HVDC All assets Grid Maintenance projects other All assets Grid Routine maintenance transmission lines Preventive Grid Routine maintenance transmission lines Corrective Grid Routine maintenance transmission lines Predictive Grid Routine maintenance transmission lines Non maintenance Grid Routine maintenance transmission lines Management services fee Grid Routine maintenance transmission lines Operating Grid Routine maintenance transmission lines Utilities Grid Routine maintenance AC stations Preventive Grid Routine maintenance AC stations Corrective Grid Routine maintenance AC stations Predictive Grid Routine maintenance AC stations Non maintenance Grid Routine maintenance AC stations Management services fee Grid Routine maintenance AC stations Operating Grid Routine maintenance AC stations Utilities Grid Routine maintenance HVDC Preventive Grid Routine maintenance HVDC Corrective Grid Routine maintenance HVDC Predictive Grid Routine maintenance HVDC Non maintenance Grid Routine maintenance HVDC Management services fee Grid Routine maintenance HVDC Operating Grid Routine maintenance HVDC Utilities Grid Routine maintenance training Training grid ICT Grid Asset management ICT Grid Transmission systems ICT Grid Telecommunication services ICT Grid Network services ICT Business support Corporate services ICT Business support Shared services ICT Business support Security services ICT Corporate Corporate Departmental Corporate Corporate Investigations Corporate Corporate Insurance Corporate Corporate Ancillary services Corporate Corporate Demand response platform corporate operating expenditure , , , ,

6 Major capital expenditure approved projects This schedule presents forecast major capex and listed projects during and, broken down by project. The schedule compares forecasts between our 2015 ITP and our 2016 update. All figures are presented in real terms using 2015/16 prices. We present the value of assets to be commissioned (rather than expenditure amounts) and include the forecast cost of interest during construction. Major projects are E&D projects with a value in excess of $20 million. Listed projects are large reconductoring projects. Project ($m) value, 2015/16 prices RPC Bunnythorpe Haywards A and B reconductoring Clutha Upper Waitaki Lines Project HVDC Upgrade North Island Grid Upgrade Project (NIGUP) North Auckland and Northland Grid Upgrade Project (NAaN) Upper North Island Dynamic Reactive Support (UNIDRS) Lower South Island Reliability Other approved major capex (approved projects) Brunswick Stratford B reconductoring Bunnythorpe Wilton A reconductoring (BPE JFD section) Bunnythorpe Wilton A reconductoring (WIL JFD section) Central Park Wilton B reconductoring Oteranga Bay Haywards A reconductoring listed projects capex Bunnythorpe Haywards A and B reconductoring Lower North Island Transmission Build Provision Pakuranga-Whakamaru Series Compensation Waitaki Valley Upper North Island Generation Decommissioning Reactive Support VARC Lower North Island Transmission Build South Waikato 110kV Transmission Capacity major capex (unapproved projects) major and listed project capex Note: There have been no new major project approvals between the 2015 ITP and the 2016 update ITP value, 2015/16 prices RPC2 value, 2015/16 prices RPC ITP 6

7 Major capital expenditure outputs This schedule presents approved outputs and estimated commissioning dates for major capex projects. Projects Outputs Commissioning date Bunnythorpe Haywards A and B reconductoring Replace the existing conductors on the Bunnythorpe Haywards A and B lines with Zebra ACSR conductor rated to operate at 75 C Clutha Upper WaitakiLines Project HVDC Convert the Roxburgh to Clyde section of the Roxburgh Twizel A 220 kv line to duplex conductor configuration. Convert the Aviemore to Waitaki section of the Aviemore Livingstone A 220 kv line to a duplex conductor configuration. Convert the Waitaki to Livingstone section of the Aviemore Livingstone A 220 kv line to a duplex conductor configuration. Convert the Roxburgh to Livingstone section of the Roxburgh Islington A 220 kv line to a duplex conductor configuration. Convert the Aviemore Benmore A 220 kv line to a duplex conductor configuration. Thermally upgrading the Cromwell Twizel section of the Roxburgh Twizel A 220 kv line to a 75 C rating. Procure, construct and commission a new thyristor-based 700 MW pole and associated equipment (Converters, condensers, new control systems, transformers, etc.) at Haywards and Benmore. Increase the link capacity to 1200 MW. On hold Not being progressed Defect liability period NIGUP Procure, construct and commission a 220 kv switching station in the vicinity of Drury and upgrade the 220 kv Otahuhu Whakamaru C line. Procure, construct and commission 350 Mvar of new static reactive plant at Otahuhu substation. Procure, construct and commission a new double circuit, steel lattice tower, overhead transmission line from a new substation near the existing Whakamaru substation to a new transition substation in the vicinity of the South Auckland urban boundary, which is capable of 220 kv operation and future 400 kv operation. Procure, construct and commission two underground cables from the new transition station in the vicinity of the South Auckland urban boundary to Pakuranga Substation. Procure, construct and commission the necessary substation/transition station facilities near the existing Whakamaru substation, a transition station in the vicinity of the South Auckland urban boundary and Pakuranga substation. Convert and connect the existing 110 kv Otahuhu Pakuranga line to 220 kv operation. Dismantle the existing 110 kv Arapuni to Pakuranga transmission line. Acquisition of designations, consents and easements to allow for future upgrade to 400 kv operation NAaN Procure, construct and commission a 220 kv connection between Pakuranga and Penrose substations that has a winter cyclic rating of around 600 MVA. Procure, construct and commission a 220 kv connection between Penrose substation, Hobson Street substation, Wairau Street substation and Albany substation that has a winter cyclic rating of around 600 MVA. Procure, construct and commission substation facilities at Pakuranga, Penrose and Albany substations to facilitate the above connections. Procure, construct and commission substation/grid exit point facilities at Vector's Hobson Street and Wairau zone substations to facilitate the above connections. 220 kv Bus Zone protection at Penrose. Defect liability period Lower South Island Reliability Replace the existing 220/110 kv interconnecting transformers at Roxburgh and Invercargill. Install appropriate shunt capacitors to support voltage. Install special protection schemes on the 220 kv network to manage security of supply during low inflows into Manapouri. Install special protection schemes as an interim measure on the 110 kv network until the new build is complete. Tee off both circuits of the 220 kv North Makarewa Three Mile Hill A line, build a 2 km double circuit line from Gore substation and connect to two new 220/110 kv interconnecting transformers UNIDRS Install and commission two STATCOMs at Marsden and Penrose. Implement demand-side initiatives in the upper North Island. Install system monitoring equipment in the upper North Island. Implement demand side initiatives in the upper North Island. Install and commission a reactive power controller for the upper North Island region. Enhance the System Operator's dynamic stability analysis software (TSAT) Cancelled Other approved Residual work post commissioning for the following major capital projects: - UNIDRS - Wairakei Whakamaru C - Autosynch points - Kawerau generation export enhancement - Blenheim Stoke - Otahuhu diversity Substation gantry works at Hawera to facilitate capacity upgrade of the Wanganui Stratford A line (Wanganui Stratford A reconductoring)

8 Major capital expenditure projects under development This schedule presents potential major and listed capex projects that we have identified and are investigating. For major projects, we provide a reference to the Transmission Planning Report, and/or the latest information available on our website, with further information on investment need. Listed projects were identified through the process. For each project we provide an estimate of total capex, and estimates of key milestone dates. All information is subject to change as we progress our analysis and as external factors such as demand and generation evolve over time. Projects Key issues being addressed reference Capital expenditure $m (commissioned value, 2015/16 prices, estimate) $m Consultation period Date of submission for approval Construction date Commissioning date Central Park Wilton B reconductoring TP.FL TL Conductors and Insulators Fleet Strategy:Section Bunnythorpe Wilton A reconductoring (WIL JFD section) TP.FL TL Conductors and Insulators Fleet Strategy:Section Oteranga Bay Haywards A reconductoring (Churton Park section) TP.FL TL Conductors and Insulators Fleet Strategy:Section Brunswick Stratford B reconductoring TP.FL TL Conductors and Insulators Fleet Strategy:Section TBC* TBC* Bunnythorpe Wilton A reconductoring (BPE JFD section) TP.FL TL Conductors and Insulators Fleet Strategy:Section TBC* TBC* Waikato and Upper North Island Voltage Management Investigation (listed as Upper North Island Generation Decommissioning Reactive Support) For the latest information see and This project may incorporate Pakuranga-Whakamaru Series Compensation. Also see Transmission Planning Report 2015 Section 6.3, 6.4 but the links above provide more recent analysis Notes: * These values are to be confirmed (TBC) but submission is considered to be unlikely pre The following projects have funding approved under our E & D base capex portfolio but have the potential, after further investigation, to exceed the base capex project threshold (i.e. $20m) and turn into major capital expenditure projects: Otahuhu Wiri Transmission Capacity See North Taranaki Transmission Capacity See We plan to review the need and timing of other projects that may result in future changes to this table. These include: HVDC Stage 3 (expansion to 1,400 MW) See Transmission Planning Report 2015 Section Upper South Island Grid Upgrade Stage 2 Dynamic See Transmission Planning Report 2015 Section 6.5.5, 6.6, 6.7 Additional generation in the Wairakei Ring and Taranaki requiring See Transmission Planning Report 2015 Section 6.2.5, 6.3, 6.4 grid capacity. Waitaki Valley See Transmission Planning Report 2015 Section ,

9 Output measures This schedule presents service targets and associated financial incentive settings for the period. Service targets Category/ circuits Measure/ ref Long term target Target/Forecast Cap Collar Incentive rate $000 15/16 performance Number of sites Number of unplanned interruptions Average duration (minutes) of unplanned interruptions Duration (minutes) of P90 unplanned interruptions Asset performance measures HVDC availability % HVAC availability % High Priority GP1A Important GP1B Standard GP1C Generator GP1D N-security GP1E High Priority GP2A Important GP2B Standard GP2C Generator GP2D N-security GP2E High Priority GP3A Important GP3B Standard GP3C Generator GP3D N-security GP3E AP , Selected circuits AP * ,