Resources

… distribution networks and grid substations could alter our transmission business by covering short-term imbalances in … equation. Later this year, we aim to publish a companion report exploring the opportunities and challenges of solar … impact considerations as well as consenting and planning constraints. 350 300 250 200 150 100 50 0 P re se n …

… to determining TGR net benefit. The SO monitors and reports on security of supply at national level weekly. If … monitoring of line loading. - To consider TGR if loading on transmission lines into a region exceeds 75% of constraints8 … net benefit process: • Network constraints –The Operations Planning (SO) team provides a set of equations detailing …

… https://www.transpower.co.nz/system-operator TRANSPOWER REPORT: Event Classifications 3 1 INTERCONNECTING … Remaining event classifications Event Classification Single Transmission Circuit Contingent Event Generating Unit … Event HVDC bipole link Extended Contingent Event Both transmission circuits of a double circuit line Other …

… http://www.transpower.co.nz/ Transpower report: Operational Impact Assessment, Tiwai Smelter Closure … extra reactive power regulation capability, and removing transmission circuits from service. The system uses a range … Contingency The uncertainty of an event occurring, and the planning to cover for it; for example, in relation to …

… 5 Priority 1 2 3 4 There were two High Potential Incidents reported in the December/January period. An apparent … deliberately removing scaffolding from below a transmission line without supervision, and the second … endorsed by NERG and Action owner assigned. • Planning underway to schedule service provider audits • …

… load times to 10 minutes during the CYD CML TWZ tactical transmission upgrade (TTU) outages and Clutha and Upper … Contingency definitions have been built to monitor and report on the impacts of a CYD CML TWZ circuit tripping when … when running to 10 minute off load times during a planned transmission outage ▪ Planned transmission outages resulting …

… https://www.transpower.co.nz/system-operator/planning-future/security-supply-annual-assessment … risks occur in early/mid-December when some planned transmission outages further restrict generation. • In the … capacity risks during 8-9 December during a planned WKM-WRK transmission outage which limits generation export. While …

… will also enhance the capabilities of the national transmission grid in this region. The costs associated with … 16. The cost to consumers of this unserved energy was reported by the System Operator to be in the range $232 - … need for resiliency to be front of mind in asset management planning and investment strategies. Good electricity …

… material is consistent with Transpower’s 2016 Integrated Transmission Plan update, including our 2016 Asset … & Development (Nikki Newham) 5. ICT (Cobus Nel) 6. Planning (Ross Parry) 3 1. Asset management journey 4 2. … and seek feedback • June 2017: Publish a Services Report on the measures as part of the 2017 ITP that sets the …

… Tower 130 Investigation report: Updates on progress against recommended actions – … resilience With the grid owner, review the contingency planning principles to specifically provide for relaxing … training course (online) for new employees to induct to the Transmission asset suite. Implement L&SF training course. …