光伏 (PV) 阵列 第 1 部分：设计要求

[中文适用范围]： 本文件规定了光伏（PV）阵列的设计要求，包括直流阵列布线、电气保护装置、开关和接地规定。范围包括PV阵列的所有部分和最终功率转换设备（PCE），但不包括储能设备、负载或供电负载的交流或直流配电网络。 本文件的目的是解决光伏系统特定特性产生的设计安全要求。直流系统，特别是PV阵列，除了源自传统交流电力系统的危险外，还存在一些危险，包括产生和维持电流不超过正常工作电流的电弧的能力。 在供电负载或电路的系统中，本文件中提到的安全要求关键取决于与PV阵列相关的逆变器是否符合IEC 62109-1、IEC 62109-2和IEC 62109-3的要求。 安装要求也关键取决于是否符合IEC 60364系列（见第4条）。 本文件不涵盖小于100 W且在STC下开路电压小于35 V DC的PV阵列。 本文件不涵盖连接到中压或高压系统的并网系统中的PV阵列，除非IEC TS 62738有要求。IEC TS 62738还涉及限制人员进入的大规模地面安装光伏电站的变化和附加要求。 对于更专业的安装，例如聚光系统、跟踪系统或建筑一体化光伏，可能需要额外的要求。 本文件还包括PV阵列在直流级别直接与电池连接时的额外保护要求。 请注意IEC 60364-7-712和IEC 62548的共存。这两个标准分别由IEC技术委员会64和82密切协调制定。 [外文原描述]： IEC 62548-1:2023 sets out design requirements for photovoltaic (PV) arrays including DC array wiring, electrical protection devices, switching and earthing provisions. The scope includes all parts of the PV array and final power conversion equipment (PCE), but not including energy storage devices, loads or AC or DC distribution network supplying loads. The object of this document is to address the design safety requirements arising from the particular characteristics of photovoltaic systems. This document also includes extra protection requirements of PV arrays when they are directly connected with batteries at the DC level. This first edition cancels and replaces IEC 62548 published in 2016. This edition includes the following significant technical changes with respect to the previous edition: a) Revised provisions for systems including DC to DC conditioning units. b) Revision of mounting structure requirements. c) Revised cable requirements. d) Revision of Clause 6 on safety issues which includes provisions for protection against electric shock including array insulation monitoring and earth fault detection. e) Revision of 7.2.7 and 7.3 with respect to isolation means. f) Provisions for use of bifacial modules and modules mounted in non-optimal orientations. g) New Annex F containing: KI factor calculations for bifacial and non-optimally oriented systems; anti-PID equipment and arc flash.