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GBZ37627.1-2019 English PDF

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GBZ37627.1-2019: Radio interference characteristics of overhead power lines and high-voltage equipment -- Part 1: Description of phenomena
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PDF similar to GBZ37627.1-2019

Standard similar to GBZ37627.1-2019

GB/T 37283 GB/T 38336 GB/T 37284 GB/Z 17624.8 GB/T 18655 GB/Z 37627.3

Basic data

Standard ID	GB/Z 37627.1-2019 (GB/Z37627.1-2019)
Description (Translated English)	Radio interference characteristics of overhead power lines and high-voltage equipment -- Part 1: Description of phenomena
Sector / Industry	National Standard
Classification of Chinese Standard	L06
Classification of International Standard	33.100.01
Word Count Estimation	58,570
Date of Issue	2019-06-04
Date of Implementation	2020-01-01
Issuing agency(ies)	State Administration for Market Regulation, China National Standardization Administration

GBZ37627.1-2019: Radio interference characteristics of overhead power lines and high-voltage equipment -- Part 1: Description of phenomena

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GB /Z 37627.1-2019 Radio interference characteristics of overhead power lines and high-voltage equipment-Part 1.Description of phenomena ICS 33.100.01 L06 Guiding Technical Document of National Standardization Overhead power lines and high-voltage equipment Radio interference characteristics Part 1.Description of phenomena (CISPR/T R18-1..2010, MOD) Released on.2019-06-04 2020-01-01 implementation State Administration of Market Supervision and Administration Issued by China National Standardization Management Committee

Foreword Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Radio noise of power lines 1 4.1 Overview 1 4.2 Physical characteristics of radio noise 2 4.2.1 Formation mechanism of noise field 2 4.2.2 Definition of noise 4 4.2.3 Influence of external parameters 4 4.3 The main characteristics of the noise field generated by the corona of the conductor 5 4.3.1 Overview 5 4.3.2 Spectrum 5 4.3.3 Horizontal distribution 5 4.3.4 Statistical distribution under different seasons and weather conditions 6 5 Corona effect of wires 7 5.1 Physical characteristics of wire corona 7 5.1.1 Overview 7 5.1.2 Factors causing corona 8 5.2 Research methods using corona cage and test circuit 9 5.2.1 Overview 9 5.2.2 Corona cage 9 5.2.3 Test circuit 10 5.3 Forecasting methods 10 5.3.1 Overview 10 5.3.2 Analysis method 10 5.3.3 CIGRE method 10 5.4 Standard Distribution Map Catalog 11 5.4.1 Overview 11 5.4.2 Principles for the representation of distribution chart catalogs 11 6 Radio noise level caused by insulators, fittings and substation equipment (not including poor contact) 12 6.1 Physical characteristics of radio noise sources 12 6.1.1 Overview 12 6.1.2 Radio noise caused by corona discharge on metal fittings 12 6.1.3 Radio noise caused by insulators 12 6.2 Relationship between radio noise voltage of single and distributed noise sources and corresponding field strength 13 6.2.1 Overview 13 6.2.2 Semi-empirical method and formula 14 6.2.3 Analysis method 15 6.2.4 Application Examples 16 6.3 Effects of environmental conditions 16 7 Spark discharge caused by poor contact 16 7.1 Physical characteristics of radio noise phenomena 16 7.2 Examples of gap noise sources 17 8 Special effects of DC 17 8.1 Overview 17 8.2 Influence of wire corona 18 8.3 Radio noise generated by insulators, fittings and substation equipment 20 8.4 Valve triggering effect 20 9 Picture 21 Appendix A (informative appendix) Calculation of the surface potential gradient of overhead lines 30 Appendix B (informative appendix) List of radio noise field distribution charts caused by corona of certain types of power line conductors 33 Appendix C (Informative Appendix) Summary of the Catalogue of Radio Noise Distribution Maps Compliant with CISPR Recommendations 49 References 51

Foreword

GB /Z 37627 "Radio interference characteristics of overhead power lines and high-voltage equipment" currently includes the following parts. --- Part 1.Phenomenon description; --- Part 3.Code of practice to reduce radio noise to a minimum. This part is Part 1 of GB /Z 37627. This section was drafted in accordance with the rules given in GB/T 1.1-2009. This part uses the redrafting method to modify the radio interference of CISPR/T R18-1..2010 "Overhead Power Lines and High Voltage Equipment Features Part 1.Phenomenon description. The technical differences between this part and CISPR/T R18-1..2010 and the reasons are as follows. --- With regard to normative quotation documents, this part has been adjusted with technical differences to adapt to my country's technical conditions and adjustments The situation is reflected in Chapter 2 "Regulatory Reference Documents", with specific adjustments as follows. ● Replaced IEC 60050-161 with GB/T 4365 equivalent to international standards; ● Replaced CISPR16-1-1 with GB/T 6113.101 which is equivalent to adopting international standards. --- Increased calculation and actual measurement data of radio interference in my country's 1000kV transmission lines. --- Updated the description of the number of operating and voltage levels of HVDC transmission lines in 8.1. The following editorial changes have been made in this section. --- Removed the introduction of CISPR/T R18-1..2010 (Ed.2.0); --- In accordance with the requirements of GB/T 1.1-2009, revised and standardized the preparation of the scope of Chapter 1; --- The captions in Figures 3 to 6 change the "various" in the original English text to the corresponding countries and line voltage levels in each figure; --- Modified the layout diagrams corresponding to B.8 and B.9 in the Appendix C table, each adding a dot, the original English text is wrong. This part is proposed and managed by the National Radio Interference Standardization Technical Committee (SAC/TC79). This section was drafted by. China Electric Power Research Institute Co., Ltd., Shanghai Electric Apparatus Research Institute, Xi'an High Voltage Apparatus Research Institute Co., Ltd. Responsible company, State Grid Co., Ltd. The main drafters of this section. Wu Xiong, Lu Yunqiang, Li Ni, Liu Yuan, Song Qian, Chen Yuchao, Gan Zheyuan, Zhang Yemao, Cui Dong, Hao Yuliang, Lu Yao, Zhang Jiangong, Xie Huichun, Liu Xingfa, Zhou Bing, Wang Yanzhao. Overhead power lines and high-voltage equipment Radio interference characteristics Part 1.Description of phenomena

1 Scope

This part of GB /Z 37627 describes the generation mechanism, measurement and effects of radio interference, and gives the design and determination of this interference Limit methods and examples, and prediction of interference caused by high-voltage overhead power lines and auxiliary equipment relative to radio broadcast service reception The level of language allowed. This section applies to radio noise from overhead power lines and high-voltage equipment that may interfere with radio reception. The frequency range involved in this section is 0.15MHz ~ 300MHz. This section does not consider radio frequency interference caused by pantographs in overhead railway traction systems.

2 Normative references

The following documents are essential for the application of this document. For dated references, only the dated version applies to this article Pieces. For the cited documents without date, the latest version (including all amendments) applies to this document. GB/T 4365 Electrotechnical term Electromagnetic Compatibility [GB/T 4365-2003, IEC 60050 (161)..1990, IDT] GB/T 6113.101 Radio disturbance and immunity measurement equipment and measurement method specification Part 1-1.Radio disturbance and immunity Measurement equipment (GB/T 6113.101-2016, CISPR16-1-1..2010, IDT) CISPR/T R18-2..2010 Radio interference characteristics of overhead power lines and high-voltage equipment. Part 2.Measurement methods and limits Determination procedures (Radiointerferencecharacteristicsofoverheadpowerlinesandhigh-voltageequipment- Part 2.Methodsofmeasurementandprocedurefordetermininglimits) ISO /IEC Guide99 International Metrology Vocabulary Foundation and Common Concepts and Related Terms (VIM) [Internationalvocabu- laryofmetrology-Basicandgeneralconceptsandassociatedterms (VIM)] Note. Informational reference documents are listed in the references.

3 Terms and definitions

The terms and definitions defined in GB/T 4365 and ISO /IEC Guide99 apply to this document.

4 Radio noise of power lines

4.1 Overview High-voltage overhead power lines (voltages above 1 kV) may generate broadband radio noise due to the following phenomena. a) Corona discharge in the air on the surface of wires, insulator components and fittings; b) Discharge and spark discharge in the high field strength region of the insulator; c) Spark discharge from loose or loose contact of fittings. The noise sources of a) and b) are usually distributed along the line, while the noise sources of c) are usually local. For operating voltage about 100kV

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