New Zealand Gazette – 1995 – No. 91

Page 2694

✨ Electricity Reliability Performance Measures



NEW ZEALAND GAZETTE

No. 91

Class D 17
Class E 0
Class F 0
Class G 0

  1. The SAIFI for the total number of interruptions, which shall be calculated in accordance with the following formula:

$$
\frac{a}{b}
$$

where -

a is the sum obtained by adding together the number of electricity customers affected by each of those interruptions; and

b is the total customers

SAIFI total interruptions = 4.9

  1. The SAIFI for the total number of interruptions within each interruption class, which shall be calculated in accordance with the following formula:

$$
\frac{a}{b}
$$

where -

a is the sum obtained by adding together the number of electricity customers affected by each of those interruptions within that interruption class; and

b is the total customers

Class
Class A 0.1
Class B 1.1
Class C 3.3
Class D 0.4
Class E 0.0
Class F 0.0
Class G 0.0
  1. The CAIDI for the total of all interruptions, which shall be calculated in accordance with the following formula:

$$
\frac{a}{b}
$$

where -

a is the sum obtained by adding together the interruption duration factors for all interruptions; and

b is the sum obtained by adding together the number of electricity customers affected by each of those interruptions.

CAIDI total interruptions = 76

  1. The CAIDI for the total number of interruptions within each interruption class, which shall be calculated in accordance with the following formula:

$$
\frac{a}{b}
$$

where -

a is the sum obtained by adding together the interruption duration factors for all interruptions within the particular interruption class; and

b is the sum obtained by adding together the number of electricity customers affected by each of those interruptions.

Class
Class A 288
Class B 126
Class C 54
Class D 46
Class E 0
Class F 0
Class G 54

Definitions of Classes:

  • Class A: Planned Trans Power Interruption
  • Class B: Planned interruption by any Line Operator (other than Trans Power)
  • Class C: Unplanned interruption originating within the principal Line Owner's works.
  • Class D: Unplanned Trans Power interruption
  • Class E: Unplanned ECNZ interruption
  • Class F: Unplanned interruption originating from a generator other than ECNZ
  • Class G: Other.


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✨ LLM interpretation of page content

🏭 Disclosure of Reliability Performance Measures (continued from previous page)

🏭 Trade, Customs & Industry
Electricity, Reliability, Interruptions, Faults, SAIDI, SAIFI, CAIDI