Electricity Asset Management Plan 2019-2029
207
Vector Limited://
PROPOSED INVESTMENT SUMMARY ($MILLION NOMINAL)
DESCRIPTION
FY20
FY21
FY22
FY23
FY24
FY25
FY26
FY27
FY28
FY29 TOTAL
Tunnel - Nokia radio system replace Tunnel - Rail Track and Anchor Replace Tunnel - Atmospheric Sensors Replace Tunnel - Penrose portal replacement of cable supports
0.01
0.01
0.05
0.05
0.04
0.05
0.05
0.04
0.05
0.05
0.04
0.05
0.47
0.15
0.15
0.40
0.40
Tunnel - Newmarket Lift replacement
0.05
0.60
0.65
Tunnel - Train, Generator, Rolling Stock Replace
0.20
0.20
Tunnel - Airlock Security New
0.17
0.16
0.33
Tunnel - Ventilation Motor Replace
0.45
0.45
Tunnel - UPS Replace
0.09
0.09
Tunnel - Fire Main Valve Replace
0.14
0.14
Tunnel - Newmarket Plant Room LV Reinforce
0.20
0.20
Tunnel - PLC Replace
0.07
0.07
Tunnel - SCADA EOC HMI Replace
0.05
0.05
Tunnel - Sump pump replacement
0.10
0.10
Tunnel - Ventilation VSD Replace
0.20
0.20
Tunnel - Newmarket Plant Room Exterior Replace
0.05
0.05
Total CAPEX
0.12
1.00
0.09
0.20
0.14
0.05
0.05
0.45
0.35
0.17
3.56
AUCKLAND AND NORTHERN PQM METERS
NEEDS STATEMENT For the decentralised electricity distribution network of the future asset lifecycle information will become ever more important. The new generation load equipment with microprocessor based controls and power electronic devices is more sensitive to power quality variations than equipment used in the past. Power quality disturbances are caused by a combination of utility, customer and outside actions but the vast majority of customers experience relatively little inconvenience or cost as a result of electric outages or power quality problems but there are customers who experience significant economic losses when power is interrupted or when power quality problems occur – the quality of power can have a direct economic impact on some industrial customers. The NZ Electricity Governance Rules 2003 Part C common quality, NZECP36 and AS/NZS 61000.3 state power quality requirements. Power quality meters at zone substations allow us to record power system disturbances to a high level of detail and accuracy and give Vector the ability to analyse faults and disturbances and report thereon. Power quality monitoring is a mixture of data gathering and measurement of power quality items such as frequency distortions, supply interruptions, voltage dips, sags and swells, supply voltage variations, flicker and transients. PQM meters are also used as check meters for energy flows and peak demands for revenue meters to zone substations. Our main measuring points are at zone substation nodes. The PQM metering population median age is approaching 17 years and the older generation PQM meters cannot be upgraded with the latest PQM reporting software. Some older PQM meters have failed and the software versions in older meters are unsupported. To ensure continued visibility of the quality of the power supply at zone substation busbars a programme of replacement forms part of the capital investment plan. There are also a number of zone substations where PQM meters do not exist and new meters will be rolled out to enable analysis of power quality.
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