本技术报告为高压直流（HVDC）系统的动态性能提供了一般指导。本规范中使用的动态性能旨在包括其特征频率或时域涵盖瞬态和稳态范围的事件和现象。它涉及稳态或瞬态条件下，由于两端高压直流输电系统和相关交流系统或其元件（如发电厂、交流线路和母线、无功电源等）之间的相互作用而产生的动态性能。假设两端高压直流输电系统利用12- 由三相桥式（双向）连接组成的脉冲转换器单元。假设变流器使用晶闸管阀作为桥臂，使用无间隙金属氧化物避雷器进行绝缘协调，并具有双向功率流能力。本规范不考虑二极管阀。虽然未明确考虑多端高压直流输电系统，但本规范中的许多信息同样适用于此类系统。 本报告仅涵盖线路换向变流器，包括电容换向变流器电路配置。半导体线路的一般要求- IEC 60146-1-1、IEC 60146-1-2和IEC 60146-1-3中给出了换向变流器。不考虑电压源变流器。 本报告（IEC 60919-3）涵盖了动态性能，并附有稳态（IEC 60919-1）和瞬态（IEC 60919-2）性能的出版物。在编制双端高压直流输电系统规范时，应考虑这三个方面。 系统性能规范和系统单个组件的设备设计规范之间存在差异。虽然本文未定义设备规范和测试要求，但应注意那些会影响系统性能规范的规范。 不同高压直流输电系统之间存在许多可能的变化，因此未详细考虑这些变化。本报告不应直接用作特定项目的规范，而应为适合特定输电方案的实际系统要求的适当规范提供基础。本报告无意区分用户和制造商对指定工作的责任。

This Technical Report provides general guidance on the dynamic performance of high-voltage direct current (HVDC) systems. Dynamic performance, as used in this specification, is meant to include those events and phenomena whose characteristic frequencies or time domain cover the range between transient conditions and steady state. It is concerned with the dynamic performance due to interactions between two-terminal HVDC systems and related a.c. systems or their elements such as power plants, a.c. lines and buses, reactive power sources, etc. at steady-state or transient conditions. The two-terminal HVDC systems are assumed to utilize 12-pulse converter units comprised of three-phase bridge (double way) connections. The converters are assumed to use thyristor valves as bridge arms, with gapless metal oxide arresters for insulation coordination and to have power flow capability in both directions. Diode valves are not considered in this specification. While multi-terminal HVDC transmission systems are not expressly considered, much of the information in this specification is equally applicable to such systems. Only line-commutated converters are covered in this report, which includes capacitor commutated converter circuit configurations. General requirements for semiconductor line-commutated converters are given in IEC 60146-1-1, IEC 60146-1-2 and IEC 60146-1-3. Voltage-sourced converters are not considered. This report (IEC 60919-3) which covers dynamic performance, is accompanied by publications for steady-state (IEC 60919-1) and transient (IEC 60919-2) performance. All three aspects should be considered when preparing two-terminal HVDC system specifications. A difference exists between system performance specifications and equipment design specifications for individual components of a system. While equipment specifications and testing requirements are not defined herein, attention is drawn to those which would affect performance specifications for a system. There are many possible variations between different HVDC systems, therefore these are not considered in detail. This report should not be used directly as a specification for a specific project, but rather to provide the basis for an appropriate specification tailored to fit actual system requirements for a particular electric power transmission scheme. This report does not intend to discriminate between the responsibility of users and manufacturers for the work specified.