标准摘要
[中文适用范围]： 本国际标准涉及电力工程领域广泛使用的三相交流系统从原始量到模态量的转换。由于相元件和线路导体之间的电阻、电感或电容耦合，三相交流系统中的操作条件和瞬态现象的检查变得更加困难。如果将耦合的相元件和线路导体的量转换为模态量，则三相交流系统中这些现象的计算和描述会更容易。如果变换导致解耦模态系统，计算就会变得非常容易。将原始阻抗和导纳矩阵变换为模态阻抗和导纳矩阵。在模态量解耦的情况下，模态阻抗和导纳矩阵变为对角矩阵。 [外文原描述]： 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.
英文名称Electric power engineering - Modal components in three-phase a.c. systems - Quantities and transformations