本标准提供了由装置电力需求变化引起的电源电压波动的背景信息。本标准将这些电源电压波动表现为灯闪烁。本标准介绍了一种使用IEC 61000-4-15中所述仪表的闪烁测量方法。本标准定义了用于灯闪烁量化的短期（Pst）和长期（Plt）指标。对于不同的系统电压水平，本标准定义了公用事业公司需要限制其系统的闪变规划水平，以避免客户投诉。本标准规定了在公共耦合点（PCC）确定单个装置排放限值的程序，以便在实践中达到规划水平。 然后，描述了根据发射限值评估闪烁符合性的评估程序。本标准还介绍了分析背景闪烁的方法，以确定单个源的闪烁贡献。本标准还涉及由各种系统事件引起的快速电压变化（RVC），如电容器组切换、电力变压器通电和感应电机启动。本文件提供了估算各种类型波动装置的PCC闪烁或RVC的方法。该文件包括示例术语和语言，可作为定义可能导致闪烁和RVC的装置的相关责任和评估方法的基础。

This standard provides background information on supply voltage fluctuations caused by variations in power demands of installations. This standard presents the manifestation of these supply voltage fluctuations as lamp flicker. The standard presents a flicker measurement method using a meter that is described in IEC 61000-4-15.6 This standard defines the short-term (Pst) and long-term (Plt) indices used for the quantification of lamp flicker. For different system voltages, this standard defines planning levels for flicker that the utilities need their system to be limited to in order to reduce customer complaints. This standard defines the procedure for determining emission limits for individual installations at the point of common coupling (PCC) so that the planning levels can be achieved in practice. Then, an assessment procedure for evaluating flicker compliance against emission limits is described. This standard also presents methodologies to analyze background flicker to identify the flicker contribution of individual sources. This standard also addresses rapid voltage changes (RVCs) that are caused by various system events, such as switching of capacitor banks, energization of power transformers, and starting of induction motors. The document provides methods to estimate flicker or RVCs at the PCC for various types of fluctuating installations. The document includes example terms and language that can be the basis for defining relative responsibilities and assessment methods for installations that may cause flicker and RVCs.