Abstract
A South African electricity utility implemented
numerous power station improvement projects aimed at either
increasing efficiency or output megawatts. This paper presents
an overview of the process used to measure and verify (M&V) the
energy and demand impacts of two projects at one of the power
stations. The projects were a steam feed pump refurbishment and
a high pressure turbine re-blade. The projects were M&V’d
using the International Performance Measurement &
Verification Protocol (IPMVP). This involves establishing a
baseline model for the performance of the two units affected by
the project. The post implementation performance of each unit
is then compared to its baseline, after making adjustments for
changes in operating conditions between the baseline and
assessment periods. Both projects resulted in an increase in
megawatts sent out. Additionally the turbine re-blade resulted in
a 2.7% increase in efficiency.