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White Papers Available for Viewing and/or Downloading:
Stability Assessment Requires Much More Than Just Load-Flow Calculations
-- According to a relatively widespread belief in the utility industry, it would
be possible to assess "voltage stability" with load-flows, continuation
load-flows and other tools that allow drawing "PV-Nose Curves" without
representing the internal reactances of the generators. As shown in this essay,
nothing is further from truth. Well known stability experts suggest that
stability calculation models that do not represent the generators are, at best,
optimistic -- and that, if we're serious about performing fast and reliable
voltage and steady-state stability assessment, we need a tool like QuickStab®
and cannot, and should not, restrict our bag of tools to just load-flows,
bifurcation analysis and assorted gimmicks aimed at drawing PV curves
EPIC is In - Alpha Is Out --
On May 29, 2001, Intel unveiled the Itanium processor - a 64 bit EPIC (Explicit
Parallel Instruction Computing) engine that entered the scene to compete
directly with the RISC processors in the high-end server and workstation
markets. At the same time, in a move reflecting the sluggish Alpha sales, Compaq
announced that, effective immediately, it was discontinuing the manufacturing of
a chip that, until then, had been the darling of SCADA/EMS system integrators.
The considerations developed in this paper could have been branded at that time
as pure speculations, but life has followed exactly the path predicted herein.
As it turned out: the RISC processors are slowly leaving the landscape; the
newcomers, such as the 64-bit extended architecture chips from American Micro
Devices (AMD) and Intel, as well as the continuously enhanced multi-processor
32-bit X86 architecture chips, are now the dominating force in the field; and,
somehow predictable, Itanium sales are slow because the industry haven't come up
with an optimizing compiler for the EPIC architecture.
Disclaimer --
the assessments expressed in the white papers posted on this page reflect solely
the personal opinions of the authors and should not be construed as positioning
statements from ECI, Inc.
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