双向并网电力转换器 第1部分：通用和安全要求

[中文适用范围]： IEC 62909-1:2025 规定了双向并网电力变换器（GCPC）的一般性和安全性方面要求，这些变换器由电网侧逆变器组成，应用侧具有两个或更多类型的直流电源端口，系统电压不超过1 000 V AC或1 500 V DC。本文件也可用于特殊情形，即在仅需一个直流电源端口的应用中使用多个直流电源端口的GCPC。本文件考虑了一般性方面，如术语、规格、性能、系统架构以及安全要求。本文件不涵盖以下内容： - 不间断电源（UPS）系统，该系统属于IEC 62040系列的范围； - 用于光伏系统的电力变换设备，该设备属于IEC 62109系列的范围； - 用于电动汽车或充电站中电池充放电的双向电力变换器，该变换器属于IEC 61851系列的范围。 注1：外部系统（例如能量管理系统、电力运营系统）在本文件中未定义。 注2：用于电能储存系统的电力变换器子系统目前由本文件涵盖，但将由正在制定中的IEC 63285系列涵盖。 注3：附录A提供了GCPC的示例，这些示例包括本文件涵盖和未涵盖的GCPC。 第二版相较于前一版包含以下重大技术变更： a) 标题增加了“和安全性”一词； b) 修订了适用范围，以明确本文件所涵盖的双向并网电力变换器（GCPC）。 [外文原描述]： IEC 62909-1:2025 specifies general and safety aspects of bi-directional grid-connected power converters (GCPC), consisting of a grid-side inverter with two or more types of DC power ports on the application side with system voltages not exceeding 1 000 V AC or 1 500 V DC. This document can also be used for the special case of a multiple DC power port GCPC used in an application requiring only one DC power port. This document considers general aspects such as terminology, specifications, performance, system architecture, as well as safety requirements. This document does not cover: - uninterruptible power supply (UPS) systems, which fall under the scope of the IEC 62040 series, - power conversion equipment for use in photovoltaic systems, which fall under the scope of the IEC 62109 series, and - bi-directional power converters to charge or discharge the batteries located within electric vehicles or in the charging station, which fall under the scope of the IEC 61851 series. NOTE 1 The external system (e.g. energy management system, utility operations system) is not defined in this document. NOTE 2 The power converter sub-system case for use in electrical energy storage systems is currently covered by this document but will be covered by the IEC 63285 series (under preparation). NOTE 3 Annex A provides examples of GCPCs. These examples contain GCPCs covered and not covered by this document. This second edition includes the following significant technical changes with respect to the previous edition: a) the title has been changed by adding the wording "and safety"; b) the scope has been changed in order to clarify the bi-directional grid-connected power converters (GCPCs) covered by this document.