Electricity Asset Management Plan 2019-2029
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Vector Limited://
Figure 4-5 Vector’s electricity supply region
4.1.15 OVERVIEW OF OUR ASSETS Vector’s network is made up of three main network components: the subtransmission network operated at 110 kV, 33 kV and 22 kV; the HV distribution network operated at 22 kV and 11 kV; and the LV distribution network operated at 400/230 V. Our network connects to the Transpower grid at 15 GXPs from where our subtransmission network conveys electricity to zone substations. Typical load profiles of the network and a list of Vector’s large customers that have an impact on network operations, can be found in Appendix 3. A single line diagram of the subtransmission network can be made available on request. Vector’s Asset Strategies for each of its asset classes describe in detail Vector’s long-term actions and plans required to deliver specific objectives and network outcomes based on stakeholder requirements and long term service level performance criteria. A list of all of Vector’s Asset Strategies is provided in Appendix 2. Each asset strategy provides an overview of the class of asset, its purpose and information about its population, asset class replacement considerations, its maintenance requirements, failure modes, specific known issues, risks and asset health indicators and refurbishment requirements. These strategies are outlined below in Sections 4.3 to 4.9.
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