2019年IEC TR 61000-1-8电磁兼容性标准：谐波电流电压相位角度与公共电网期望值

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IEC TR 61000-1-8 Ed. 1.0 en_2019.pdf 是一份由国际电工委员会（IEC）发布的技术报告，专门关注电磁兼容性（EMC）领域。该标准于2019年1月首次发布，其核心内容集中在公共供电网络中谐波电流排放和电压的相位角度上。这份标准对于电力系统设计、电气设备制造以及电磁环境控制具有重要意义。在电力系统中，电磁兼容性是一个关键因素，它确保了电子设备的正常运行，不会对其他设备或电网造成干扰。IEC 61000-1-8规定了衡量和控制这些电磁骚扰的技术要求，尤其是在电力传输过程中，由于非线性负载产生的谐波电流可能会对电网的稳定性和效率产生负面影响。相位角是评估谐波特性的重要参数，它关系到电流和电压在时间上的同步程度。该标准旨在设定未来预期，提供一个统一的框架，帮助工程师和技术人员理解和管理公共电网中的电磁兼容问题。它涵盖了谐波测量方法、计算和限制值，以及可能影响相位角度的因素，如电源频率、负载类型和网络拓扑。此外，它还强调了在设计阶段就要考虑电磁兼容性的必要性，以防止问题在后期升级为更严重的问题。 IEC 61000-1-8的标准制定过程包括广泛的国际协作，确保全球范围内的一致性和互操作性。任何想要遵循这一标准的组织和个人，在复制或利用该出版物的内容时，必须获得IEC的书面许可，以尊重版权并维护知识产权。 IEC TR 61000-1-8 Ed. 1.0 en_2019.pdf 提供了一个全面的指南，用于确保公共供电系统的电磁兼容性，这对于维持电网的高效运行、保护设备免受电磁干扰以及推动绿色能源技术的发展都至关重要。对于从事电力系统设计、电力设备制造商和电磁兼容性研究的专家来说，理解和遵守这一标准是至关重要的。

– 10 – IEC TR 61000-1-8:2019  IEC 2019

ELECTROMAGNETIC COMPATIBILITY –

Part 1-8: General – Phase angles of harmonic current emissions and

voltages in the public supply networks – Future expectations

1 Scope

The objective of this part of IEC 61000 is to provide information about the current conditions,

and project future developments, of prevailing phase angles, predominantly for the 3

and 5

harmonic currents, on public supply networks. This objective is accomplished by monitoring a

number of networks, and efforts to forecast the effects of changes in technologies.

This document presents information to guide the discussion about the effectiveness of

potential mitigation techniques and the generalisation of effects of the prevailing angle

positions of selected current harmonics.

This document mainly deals with the phase angles of the 3

and 5

harmonic currents, but

also contains information about other harmonics.

2 Normative references

There are no normative references in this document.

3 Terms and definitions

For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following

addresses:

• IEC Electropedia: available at http://www.electropedia.org/

• ISO Online browsing platform: available at http://www.iso.org/obp

3.1

phase angle of I

related to the fundamental phase-to-neutral voltage U

phase angle of the 5

harmonic current determined as described in Figure 1

[SOURCE: IEC 61000-3-12:2011, 3.16, modified – the reference to Figure 2 has been

removed.]

IEC TR 61000-1-8:2019  IEC 2019 – 13 –

This document is based primarily on the results of the N-ERGIE investigations which are

consistent, nevertheless, with the results of the larger FNN studies. The data pool of FNN

offers the big advantage of a large number of random tests (within Germany). The enormous

amount of data necessitates substantial compression for a meaningful presentation, and

admittedly leads to a less-detailed consideration of the results. More detailed analysis has

also been carried out, however, particularly concerning correlation, and that analysis is

presented as well.

Test sites were chosen according to criteria from [1]

with regard to network structure, load

structure and generator structure. These diverse test sites, representing various topologies

and load types in the network area of the N-ERGIE are listed in Table 1.

Thus, eight residential area networks (e.g. “A1” and “A2” in the column “Category” of Table 1,

see Table 9 for definitions) and four networks that include commercial offices, trade, and retail

stores, were examined. Additionally, one of the last four networks was a repetition of M9

concerning the phase angle of the harmonic voltage instead of the phase angle of the

harmonic current, listed as M17. At the test sites M1 to M8, measurements were made from

the middle of December 2012 to the middle of January, 2013, with a duration of 35 days to 40

days. The measurements at the test sites M9 to M12 followed in May 2013. These were

repeated at the same test sites in July 2013, listed as M13 to M16, with a modified interval

time of measurement (60 s instead of 1 s) at M10 to M12, respectively M14 to M16. These

test sites (M9 to M12) are listed as M13 to M16, mainly as a means of differentiation. With a

choice of the measuring period, the opportunity was consciously taken to measure, on the one

hand, during the winter months and summer months and to measure, on the other hand, in a

time window with varying users' behaviour (work times and holidays about the turn of the

year). The background is to identify network parameter dependencies, specifically the

prevailing phase angle of harmonics, resulting from the users' behaviour and load structure.

As follows from Table 1, the 16 measurement sites are representative of a good cross section

of the public supply, and as follows from the more detailed data review, the analysis includes

a statistically meaningful sample set that can be extrapolated to the 220/230 V 50 Hz public

supply networks in general. No attempt is made to extrapolate the findings to other network

topologies, but given that the load structures are similar in 120 V 60 Hz networks, the findings

of this document can apply to some extent to those other networks as well.

The field measurements included exclusively the public low-voltage network at the terminals

of the local network transformers. Current and voltage were measured in each of the three

phases, and included magnitude and phase. The measurement window was 200 ms with a

sampling rate of 100 kS/s. The measurement repetition rate amounted to 1 min, except with

M10 to M12 where data were acquired with 1 s intervals. The measuring instruments used by

N-ERGIE recorded the harmonics up to the 50

order and the basic electrical parameters,

including phase angle information for current and voltage. The harmonic currents phase

angles

are measured with referenc

e to the zero crossing of the fundamental of the voltage

according to 61000-3-12 [3] (positive zero crossing).

In 4.2, a brief summary of the measurement results is presented, along with a summary

review of the potential future impact of technologies and societal developments. The data are

then analysed in detail, and technology and economic factors are analysed in more detail, to

further explain the summary findings.

___________

Numbers in square brackets refer to the Bibliography.

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std86021

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