GB/T 18039.4-2017 English PDF (GBT18039.4-2017)

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GB/T 18039.4-2017: Electromagnetic compatibility -- Environment -- Compatibility levels in industrial plants for low-frequency conducted disturbances
GB/T 18039.4-2017
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 33.100.10; 33.100.20
L 06
GB/T 18039.4-2017 / IEC 61000-2-4:2002
Replacing GB/T 18039.4-2003
Electromagnetic Compatibility - Environment -
Compatibility Levels in Industrial Plants for Low-frequency
Conducted Disturbances
(IEC 61000-2-4:2002, Electromagnetic Compatibility (EMC) - Part 2-4: Environment
- Compatibility Levels in Industrial Plants for Low-frequency Conducted
Disturbances, IDT)
ISSUED ON: DECEMBER 29, 2017
IMPLEMENTED ON: JULY 1, 2018
Issued by: General Administration of Quality Supervision, Inspection and
Quarantine of the People’s Republic of China;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 6
2 Normative References ... 7
3 Terms and Definitions ... 7
3.1 General Definitions ... 8
3.2 Phenomena-related Definitions ... 9
4 Electromagnetic Environment Classes ... 12
5 Compatibility Levels ... 13
5.1 General Comment ... 13
5.2 Voltage Deviations ... 14
5.3 Voltage Dips and Short Interruptions ... 14
5.4 Voltage Unbalance (imbalance) ... 14
5.5 Temporary Power-frequency Variation ... 15
5.6 Harmonics ... 15
5.7 Interharmonics ... 16
5.8 Voltage Components at Higher Frequencies (above 50th harmonic) ... 17
5.9 Transient Overvoltages ... 17
5.10 DC Component ... 17
6 Compatibility Levels ... 17
Appendix A (informative) Explanations and Examples for Interharmonics ... 21
A.1 Resolution of Non-sinusoidal Voltages and Currents... 21
A.2 Time Varying Phenomena ... 22
A.3 Definition of Additional Terms ... 22
Appendix B (informative) Examples of Expected Disturbance Levels in Typical
Industrial Networks ... 24
B.1 Voltage Disturbance Levels in Industrial Networks due to Large Converters ... 24
B.2 Voltage Disturbance Levels in Industrial Networks at High Load ... 26
B.3 Voltages Dips and Short Interruption ... 28
B.4 Transient Overvoltages ... 30
Appendix C (informative) Interharmonic and Voltages at Higher Frequencies ... 32
C.1 Sources of Interharmonics ... 32
C.2 Mitigation Methods ... 37
C.3 Voltages at Higher Frequencies ... 39
Bibliography ... 41
Foreword
Electromagnetic Compatibility - Environment currently consists of the following parts:
---GB/Z 18039.1 Electromagnetic Compatibility - Environment - Classification of
Electromagnetic Environments
---GB/Z 18039.2 Electromagnetic Compatibility - Environment - Assessment of the
Emission Levels in the Power Supply of Industrial Plants as regards Low-frequency
Conducted Disturbances
---GB/T 18039.3 Electromagnetic Compatibility - Environment - Compatibility Levels for
Low-frequency Conducted Disturbances and Signaling in Public Low-voltage Power
Supply Systems
---GB/T 18039.4 Electromagnetic Compatibility - Environment - Compatibility Levels in
Industrial Plants for Low-frequency Conducted Disturbances
---GB/Z 18039.5 Electromagnetic Compatibility - Environment - Electromagnetic
Environment for Low-frequency Conducted Disturbances and Signaling in Public
Power Supply Systems
---GB/Z 18039.6 Electromagnetic Compatibility - Environment - Low Frequency
Magnetic Fields in Various Environments
---GB/Z 18039.7 Electromagnetic Compatibility - Environment - Voltage Dips and Short
Interruptions on Public Electric Power Supply Systems with Statistical Measurement
Results
---GB/T 18039.8 Electromagnetic Compatibility - Environment - Description of HEMP
Environment - Conducted Disturbance
---GB/T 18039.9 Electromagnetic Compatibility - Environment - Compatibility Levels for
Low-frequency Conducted Disturbances and Signaling in Public Medium-voltage
Power Supply Systems
This is Part 4 of Electromagnetic Compatibility - Environment.
This Part was drafted in accordance with the rules provided in GB/T 1.1-2009.
This Part serves as a replacement of GB/T 18039.4-2003 Electromagnetic Compatibility -
Environment - Compatibility Levels in Industrial Plants for Low-frequency Conducted
Disturbances.
In comparison with GB/T 18039.4-2003, the main technical changes are as follows:
---The references to IEC 60050-101, IEC 60050-551 and IEC 61000-2-12 are added (see
Chapter 2);
---The definition of “total disturbance level” is deleted; the definitions of “electromagnetic
disturbance”, “disturbance level”, “planning level”, “fundamental frequency”,
“fundamental component”, “harmonic frequency”, “harmonic component”,
“interharmonic frequency”, “inter-harmonic component”, “total harmonic distortion”,
“voltage unbalance”, “voltage deviation”, “voltage dip” and “transient overvoltage” are
added (see Chapter 3);
---The relevant description of electromagnetic environment classification is modified (see
Chapter 4);
---In terms of compatibility levels, the general description, and the description of
compatibility levels regarding voltage deviation, voltage unbalance, power-frequency
variation, harmonics and inter-harmonics are modified; the description of compatibility
levels regarding voltage components at higher frequencies, transient overvoltage and
d.c. component is added (see Chapter 5);
---The illustration of interharmonic compatibility levels is added (see Figure 1 of Chapter
6);
---The explanations and examples for interharmonics are added (see Appendix A);
---The production and mitigation methods for interharmonics and voltage components at
higher frequencies are added (see Appendix C).
This Part uses the translation method in the equivalent adoption of IEC 61000-2-4:2002
Electromagnetic Compatibility (EMC) - Part 2-4: Environment - Compatibility Levels in
Industrial Plants for Low-frequency Conducted Disturbances.
The Chinese documents that have consistent correspondence with the international documents
normatively cited in this Part are as follows:
---GB/T 4365-2003 Electrotechnical Terminology - Electromagnetic Compatibility (IEC
60050(161):1990, IDT)
---GB/T 18039.3-2017 Electromagnetic Compatibility - Environment - Compatibility
Levels for Low-frequency Conducted Disturbances and Signaling in Public Low-
voltage Power Supply Systems (IEC 61000-2-2:1990, IDT)
---GB/T 18039.9-2013 Electromagnetic Compatibility - Environment - Compatibility
Levels for Low-frequency Conducted Disturbances and Signaling in Public Medium-
voltage Power Supply Systems (IEC 61000-2-12:2003, IDT)
Electromagnetic Compatibility - Environment -
Compatibility Levels in Industrial Plants for Low-frequency
Conducted Disturbances
1 Scope
This Part of GB/T 18039 is concerned with conducted disturbances in the frequency range from
0 kHz to 9 kHz. It gives numerical compatibility levels for industrial and non-public power
distribution systems.
This Part is applicable to AC 50 Hz low-voltage and medium-voltage power supply systems.
Power supply systems on ships, aircraft, offshore platforms and railways are not included.
The compatibility levels specified in this Part apply at the in-plant point of coupling (IPC). At
the power input terminals of equipment receiving its supply from the above systems, the
severity levels of the disturbances can, for the most part, be taken to be the same as the levels
at the in-plant point of coupling. In some situations, this is not so, particularly in the case of a
long feeder dedicated to the supply of a particular load, or in the case of a disturbance generated
or amplified within the installation of which the equipment forms ...