Electricity Asset Management Plan 2019-2029
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Vector Limited://
SH
State Highway
SoSS
Security of Supply Standard
TMS
Transformer management system
V
Volts
V2G
Vehicle-to-grid
VHF
Very high frequency
WAN
Wide area network
XLPE
Cross-linked polyethylene
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.
Bulk supply substation
Distribution substation
Parts of the distribution network that can be isolated and operated in an island state under contingency situations
Micro 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.
National grid (or grid)
N-x security
Subtransmission security class rating.
Reliability
The ability of the network to deliver electricity consistently when demanded.
Resilience Substation
The ability of the network to recover quickly and effectively from an event.
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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