Vector Electricity Asset Management Plan— 2020 Update
OMS
Outage management system
OPEX
Operational expenditure
PV
Photovoltaic
QTRA
Quantitative tree risk assessment
RAB
Regulatory asset base
RY
Regulatory year (year ending 31st March)
SAIDI
System average interruption duration index
SAIFI
System average interruption frequency index
SAP
Enterprise Resource Planning (ERP) System (SAP)
SAP PM
Plant maintenance module of SAP
SH
State Highway
SoSS
Security of Supply Standard
SRMP
Strategic Reliability Management Plan
SWBD
Switchboard
VSP
Vegetation Service Provider
Bulk supply substation
A substation owned by Vector that directly connects the Vector network to the national grid. A bulk supply substation may contain more than one supply bus (of same or different voltages). A substation for transforming electricity from distribution voltage (22 kV or 11 kV) to 400V distribution voltage. The price-quality path set under Part 4 of the Commerce Act for the period 1 April 2015 to 31 March 2020
Distribution substation
DPP2
DPP3
The price-quality path set under Part 4 of the Commerce Act for the period 1 April 2020 to 31 March 2025
National grid (or grid)
The 110 kV and/or 220 kV AC network and the DC link between the North Island and the South Island owned by Transpower for connecting electricity generation stations to grid exit points.
N-x security
Subtransmission security class rating.
Reliability
The ability of the network to deliver electricity consistently when demanded.
Resilience
The ability of the network to recover quickly and effectively from an event.
Substation
A network facility containing a transformer for the purpose of transforming electricity from one voltage to another. A substation may contain switchboards for dispatch or marshalling purpose. A substation may also contain more than one building or structure on the same facility. A facility containing one or more switchboards (or switches) for the purpose of rearranging network configuration or marshalling the network through switching operation. A substation for transforming electricity from subtransmission voltage (110 kV, 33 kV or 22 kV) to distribution voltage (22 kV or 11 kV).
Switching station
Zone substation
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