IEC-62428 Electric power engineering - Modal components in three-phase a.c. systems - Quantities and transformations

IEC-62428 - EDITION 1.0 - CURRENT


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IEC 62428:2008 deals with transformations from original quantities into modal quantities for the widely used three-phase a.c. systems in the field of electric power engineering. The examination of operating conditions and transient phenomena in three-phase a.c. systems becomes more difficult by the resistive, inductive or capacitive coupling between the phase elements and line conductors. Calculation and description of these phenomena in three-phase a.c. systems are easier if the quantities of the coupled phase elements and line conductors are transformed into modal quantities. The calculation becomes very easy if the transformation leads to decoupled modal systems. The original impedance and admittance matrices are transformed to modal impedance and admittance matrices. In the case of decoupling of the modal quantities, the modal impedance and admittance matrices become diagonal matrices.
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Document Number

IEC 62428 Ed. 1.0 b:2008

Revision Level

EDITION 1.0

Status

Current

Publication Date

July 1, 2008

Committee Number

25