IEC 62909-1:20 17规定了双向并网功率转换器（GCPC）的一般方面，由电网侧逆变器组成，在应用侧具有两种或多种类型的DC端口接口，系统电压不超过1 000 V AC或1 500 V DC。在特殊情况下，GCPC将仅具有一个DC端口接口，该接口连接到双向能量存储设备。本文档包括术语、规范、性能、安全性、系统架构和测试用例定义。“系统架构”定义了逆变器和转换器之间的相互作用。定义了共同的、通用的和独立于单个发生器和双向存储器的特殊特性的要求。 本文件不涵盖不间断电源（UPS）系统，该系统属于IEC 62040（所有部分）的范围。内部和外部数字通信的要求可能是必要的；包括与分布式能源通信的接口要求在IEC 62909的未来部分中提供。所有EMC要求均参照现有IEC标准进行定义。外部通信要求超出了本文档的范围。

IEC 62909-1:2017 specifies general aspects of bi-directional grid-connected power converters (GCPC), consisting of a grid-side inverter with two or more types of DC-port interfaces on the application side with system voltages not exceeding 1 000 V AC or 1 500 V DC. In special cases, a GCPC will have only one DC-port interface, which is connected to a bidirectional energy-storage device. This document includes terminology, specifications, performance, safety, system architecture, and test-case definitions. The "system architecture" defines interaction between the inverter and converters. Requirements which are common, general, and independent of special characteristics of individual generators and bi-directional storages are defined.
This document does not cover uninterruptible power supply (UPS) systems, which fall under the scope of IEC 62040 (all parts). Requirements for internal and external digital communication might be necessary; the interface requirements including communication with distributed energy resources are provided in a future part of IEC 62909. All EMC requirements are defined by reference to existing IEC standards. External communication requirements are out of scope of this document.