IEC TS 63222-3:20 24旨在提供关于适用于在电能质量预测评估中评估用户特性的公认工程实践的规定。它总结了公共电力系统在规划阶段电能质量扰动预测的非线性、不平衡、冲击和波动负荷或发电建模的最佳实践。 本文档重点介绍电力网络中交流电能质量分析的频域建模，通常在高达50次谐波的范围内（50 Hz系统中为2.5 kHz，60 Hz系统中为3 kHz）。分析了三相系统的不平衡，只考虑了负序分量。所提供的方法和建模指南对于连接到电力系统的用户装置作为干扰源的表示是有效的。网络元件的建模超出了本文档的范围。 这些指南对于定义用户设备的电能质量性能规范是有价值的。他们还将在对其安装进行建模时协助用户评估或证明是否符合系统所有者/运营商提供的排放限值，并调查和指定缓解措施。

IEC TS 63222-3:2024 is intended to provide provisions regarding recognized engineering practices applicable to assess the user’s characteristics in power quality predicted assessment. It summarizes the best practice in non-linear, unbalanced, impact and fluctuating loads or generations modelling for power quality disturbance anticipation in public power systems at the planning stage.
This document focuses on frequency-domain modelling for AC power quality analysis in electric power networks, typically in the range up to the 50th harmonic (2,5 kHz in 50 Hz systems or 3 kHz in 60 Hz systems). Unbalance is analyzed in three-phase systems and only negative sequence component is considered. The approach and modelling guidelines provided are valid on the representation of user installations connected to power systems acting as sources of disturbance. Modelling of the network elements is out of the scope of the document.
These guidelines will be valuable in the definition of power quality performance specifications for user equipment. They will also assist users when modelling their installation to assess or demonstrate compliance with the emission limits provided by the system owner/operator and to investigate and specify mitigation measures.