IEC 61724-1:20 21 RLV包含官方IEC国际标准及其红线版本。Redline版本仅提供英文版本，为您提供了一种快速简单的方法来比较IEC官方标准与其以前版本之间的所有变化。 IEC 61724-1:20 21概述了光伏（PV）系统性能监测和分析的术语、设备和方法。它也是依赖于所收集数据的其他标准的基础。本文件定义了光伏（PV）性能监控系统的类别，并作为监控系统选择的指南。第二版取消并取代了2017年出版的第一版。与上一版相比，此版本包括以下重大技术变更:-介绍了双面系统的监控。 -辐照度传感器要求已更新。 -基于新技术更新了污垢测量。 -C类监测系统被淘汰。 -更新了各种要求、建议和解释性说明。

IEC 61724-1:2021 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition.

IEC 61724-1:2021 outlines terminology, equipment, and methods for performance monitoring and analysis of photovoltaic (PV) systems. It also serves as a basis for other standards which rely upon the data collected. This document defines classes of photovoltaic (PV) performance monitoring systems and serves as guidance for monitoring system choices. This second edition cancels and replaces the first edition, published in 2017. This edition includes the following significant technical changes with respect to the previous edition:
- Monitoring of bifacial systems is introduced.
- Irradiance sensor requirements are updated.
- Soiling measurement is updated based on new technology.
- Class C monitoring systems are eliminated.
- Various requirements, recommendations and explanatory notes are updated.