电磁兼容性(EMC).测试和测量技术.电能质量测量方法

[中文适用范围]： IEC 61000-4 的这一部分定义了 50/60 Hz 交流电源系统中电能质量参数结果的测量和解释方法。每个相关参数的测量方法都以给出可靠且可重复的结果的方式进行描述，无论方法的实现如何。本标准规定了原位测量的测量方法。本标准涵盖的参数测量仅限于电力系统中可能发生的电压现象。本标准考虑的电能质量参数包括电源频率、电源电压幅值、闪变、电源电压骤降和骤升、电压中断、瞬态电压、电源电压不平衡、电压谐波和间谐波、电源电压上的电源信号和快速电压变化。根据测量的目的，可以测量该列表中的全部或部分现象。注 1：有关当前参数的信息可在 A.3 和 A.5 中找到。该标准给出了测量方法和适当的性能要求，但没有设定阈值。本标准承认插入电力系统和仪器之间的传感器的影响，但未详细说明。阐述了在带电电路上安装监视器的注意事项。注 2：一些关于传感器影响的指导可以在 IEC 61557-12 中找到。 [外文原描述]： IEC 61000-4-30:2008 defines the methods for measurement and interpretation of results for power quality parameters in 50/60 Hz a.c. power supply systems. Measurement methods are described for each relevant parameter in terms that give reliable and repeatable results, regardless of the method's implementation. This standard addresses measurement methods for in situ measurements. Measurement of parameters covered by this standard is limited to voltage phenomena that can be conducted in a power system. The power quality parameters considered in this standard are power frequency, magnitude of the supply voltage, flicker, supply voltage dips and swells, voltage interruptions, transient voltages, supply voltage unbalance, voltage harmonics and interharmonics, mains signalling on the supply voltage and rapid voltage changes. Depending on the purpose of the measurement, all or a subset of the phenomena on this list may be measured. IEC 61000-4-30:2008 gives measurement methods and appropriate performance requirements, but does not set thresholds. The effects of transducers inserted between the power system and the instrument are acknowledged but not addressed in detail in this standard. Precautions on installing monitors on live circuits are addressed. IEC 61000-4-30:2008 has the status of a basic EMC publication in accordance with IEC Guide 107. This second edition cancels and replaces the first edition published in 2003. This edition includes the following significant technical changes with respect to the previous edition: - Adjustments, clarifications, and corrections to class A and class B measurement methods. - A new category, class S, intended for survey instruments, has been added. - A new Annex C gives guidance on instruments.