Abstract:
Electromagnetic compatibility standards and guidelines
used for planning of flicker allocation at various busbars of
a power system requires some knowledge of the manner in which
voltage fluctuations and hence the flicker propagate and how various
loads respond to them. The current rudimentary approach
taken for the determination of the load response to voltage fluctuations
is based on network impedance values and hypothetical
dynamic impedance values of the connected loads. Practical results
and recently developed theory on the subsynchronous behavior of
induction machines suggest that where there is a large base of induction
machine exists on a power system the flicker attenuation is
significant. This paper reports on a methodology to include the influence
of induction machine behavior in flicker propagation and
attenuation studies. The work is based on small-signal models to
describe induction machine and system behavior which are utilized
for the development of a flicker transfer coefficient. A systematic
approach for the practical application of the methodology
for flicker related work is included
