Protection

Tesla has New Zealand’s leading team of power system Protection Engineers; in terms of both experience and depth of knowledge.

A flagship of Tesla’s engineering services is our Protection group. Tesla is often engaged to undertake a client’s more complicated protection work, where a higher level of understanding and experience is necessary. 

Carrying out wide area studies for clients is a regular engagement, often producing an economic solution to meet unusual expansion requirements, or to improve a distributor’s SAIDI and SAIFI performances.  Improvements can be designed as small increments where each presents a statistical improvement, but does not need a major project to implement.

One specialisation is the study of GXP connections, providing the Transmission operator with continuously updated vital information, and larger Distribution companies with Grid tie details.

Our specialist skills for Protection services include:

  • Preparation of protection design and setting standards,
  • Auditing and review of protection schemes,
  • Protection relay evaluation and selection,
  • Fault studies using DIgSILENT power system modelling software,
  • Protection relay setting calculations, reviews and co-ordination,
  • Assistance with relay setting databases and management of relay settings,
  • Familiarity with a wide range of numerical relays and with older relay types,
  • Incident analysis,
  • Protection scheme design including:
    • Generation
    • Transmission
    • Distribution
    • Single and three-pole auto re-close
    • Arc-flash
    • Transformers
    • Busbar/CB Fail.

Our highly skilled Transmission, Generation, Distribution, Control, Civil & Structural and Comms teams provide specialist input for all Protection projects.