GB/Z 17624.8-2025Electromagnetic compatibility - General - Part 8: Phase angles of harmonic current emissions and voltages in the public supply networks - Future expectations (English PDF)
电磁兼容 综述 第8部分：公用电网谐波电流发射与电压相角 未来预期
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
January 24, 2025
Implementation date
January 24, 2025
Scope
GB/Z 17624.8-2025 is the English-translated version of 电磁兼容 综述 第8部分：公用电网谐波电流发射与电压相角 未来预期.
GB/Z 17624.8-2025 is the Chinese standard "Electromagnetic compatibility - General - Part 8: Phase angles of harmonic current emissions and voltages in the public supply networks - Future expectations".
Its scope clause reads: This paper aims to provide a summary of the main 3rd and 5th order power supply networks by monitoring a certain number of power grids and predicting technological changes.
Current status and outlook information on harmonic current dominant phase angles. This document provides information to guide the discussion on the effectiveness of possible mitigation techniques and summarizes the effects of selected harmonic currents on the dominant phase angle position.
The impact of placement. This document deals primarily with the phase angles of the 3rd and 5th harmonic currents, but also contains information on other subharmonics. Its clauses include terms and definitions.
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Document preview — GB/Z 17624.8-2025
National Standard of the People's Republic of China
- ICS
- 33.100.10; 33.100.01
- Classification
- L 06
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Preface
- Introduction
- 1 Scope
- 2 Normative references
- 3 Terms and Definitions
- 4 Summary of field measurements and data analysis
- 4.1 Field measurement methods and concepts
- 4.2 Measurement results summary, analysis and conclusions
- 5 Main evaluation of potential economic impacts
- 5.1 Overview
- 5.2 Correlation with electrical parameters
- 5.3 Correlation with non-electrical influence quantities
- 5.3.1 Overview
- 5.3.2 Economic Development and Energy Demand
- 5.3.3 Durable consumer goods
- 5.3.4 Capital-income ratio in developed industrial countries
- 6 Data evaluation concepts and principles
- 6.1 Data Evaluation Concepts
- 6.2 Principles of statistical surveys
- 6.2.1 Correlation
- 6.2.2 Calculation of correlation coefficient of complex sequence
- 6.2.3 Main phase angle and dominant vector
- 7 Detailed data analysis
- 7.1 Overview
- 7.2 Concept of time series analysis and statistical survey of basic electrical parameters
- 7.3 Time Series Analysis of Selected Harmonics
- 7.4 Selecting the harmonic current phase angle
- 7.4.1 Phase Angle Time Series Analysis
- 7.4.2 Phase angle in polar coordinates
- 7.5 Harmonic spectrum
- 7.6 Correlation
- 8 Empirical evidence
- 8.1 Induction and Deduction
- 8.2 Laboratory tests
- 8.3 On-site measurement
- 9 Conclusions and Recommendations
- Appendix A (Informative) Test point dominant vector
- References
1 Scope
This paper aims to provide a summary of the main 3rd and 5th order power supply networks by monitoring a certain number of power grids and predicting technological changes.
Current status and outlook information on harmonic current dominant phase angles.
This document provides information to guide the discussion on the effectiveness of possible mitigation techniques and summarizes the effects of selected harmonic currents on the dominant phase angle position.
The impact of placement.
This document deals primarily with the phase angles of the 3rd and 5th harmonic currents, but also contains information on other subharmonics.
2 Normative references
This document has no normative references.
3 Terms and definitions
The following terms and definitions apply to this document.
ISO and IEC maintain databases of terminology used for standardization at the following URLs.
3.1 to-neutralvoltageUp1
The 5th harmonic current phase angle is determined as shown in Figure 1.
[Source. IEC 61000-3-12.2011, 3.16, modified—reference to Figure 2 has been deleted.] […]
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 53 pages — is available in the English PDF.
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Related Standards
GB/Z 17624.7-2023 — Electromagnetic compatibility - General - Part 7: Power factor in single-phase systems under non-sinusoidal conditions
GB/Z 17624.6-2021 — Electromagnetic compatibility - General - Part 6: Guide to the assessment of measurement uncertainty
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