The distribution
system performance is measured and reported
on by the network interruption performance and
the quality of supply measures.
Network
interruption performance measures comprise reliability
of supply (frequency of supply interruptions)
and availability of supply (duration of the
supply interruptions) to customers. Quality
of supply measures reflect the quality of voltage
level supplied to customers and comprise voltage
dips (X, T, S and Z type), voltage regulation,
total harmonic distortion and measures related
to voltage unbalance.
The 12-month
moving average targets for these measures are
based on the regulatory and operational sustainability
requirements to improve overall technical performance
and customer satisfaction. Significant emphasis
was placed on an integrated improvement strategy
with specific short and medium term initiatives
to improve the technical performance levels. |
