功能规范的这些指南和参数列表描述了特定的功能规范 高压直流输电电网系统的要求。这里使用术语“HVDC电网系统”来描述 有两个以上换流站连接到公共电网的高压直流输电系统 直流电路。 虽然本文件侧重于特定于HVDC电网系统的要求，但有些要求 一般认为适用于所有HVDC系统，即包括点对点HVDC系统。 已尽可能参考现有IEC、Cigre或其他相关文件。购买本文件时可获得的所有当前修订均包含在购买本文件中。

These Guidelines and Parameter Lists to Functional Specifications describe specific functional requirements for HVDC Grid Systems. The terminology "HVDC Grid Systems" is used here describing HVDC systems for power transmission having more than two converter stations connected to a common DC circuit. While this document focuses on requirements, that are specific for HVDC Grid Systems, some requirements are considered applicable to all HVDC systems in general, i.e. including point-to-point HVDC systems. Existing IEC, Cigre or other documents relevant have been used for reference as far as possible.All current amendments available at time of purchase are included with the purchase of this document.