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GB/T 35706-2017: Technical rule for ice mapping of power grid
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Technical rule for ice mapping of power grid
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GB/T 35706-2017
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Basic data | Standard ID | GB/T 35706-2017 (GB/T35706-2017) | | Description (Translated English) | Technical rule for ice mapping of power grid | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | F23 | | Classification of International Standard | 29.240.99 | | Word Count Estimation | 26,274 | | Date of Issue | 2017-12-29 | | Date of Implementation | 2018-07-01 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | GB/T 35706-2017: Technical rule for ice mapping of power grid---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Technical rule for ice mapping of power grid
ICS 29.240.99
F23
National Standards of People's Republic of China
Guidelines for Drawing Ice Maps in Power Grids
Published on.2017-12-29
2018-07-01 Implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
China National Standardization Administration released
Directory
Preface III
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Basic Information 2
5 Ice thickness calculation 3
6 Ice Map 5
7 Ice Distribution Map Revision 6
Appendix A (Informative) Data Collection of Meteorological Stations during the Ice-Covering Period 7
Appendix B (Normative Appendix) Meteorological Site Wire Ice Accumulation Observation Data Collection 8
Appendix C (Normative Appendix) Actual Observation Data of Ice Coating 9
Appendix D (Normative Appendix) Ice Cover Data Survey 10
Appendix E (informative annex) Calculation method for equivalent ice thickness
Appendix F (informative) Reference calculation method for ice thickness calculation 13
Appendix G (informative) Nominal ice thickness calculation example 16
Appendix H (Informative) Mesh interpolation and revision methods for ice thickness estimation 17
Appendix I (Informative Appendix) ×× Grid Ice Distribution Figure Legend 19
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard is proposed by the China Electricity Council.
This standard is under the jurisdiction of the National Overhead Line Standardization Technical Committee (SAC/TC202).
Please note that some of the contents of this document may involve patents. The issuing agency of this document does not assume responsibility for identifying these patents.
This standard is mainly drafted by. State Grid Hunan Electric Power Company Disaster Prevention and Mitigation Center, State Grid Hunan Electric Power Company, China Electric Power Research Institute
Research Institute, State Grid Hubei Provincial Electric Power Company, State Grid Jiangxi Electric Power Company, China Southern Power Grid Science Research Institute, Guizhou Power Grid Co., Ltd., Guizhou
Electric Power Design and Research Institute, Hunan Xiangdian Trial Research Technology Co., Ltd.
The main drafters of this standard. Lu Jiazheng, Xu Xongjian, Feng Tao, Li Bo, Yi Hui, Gong Zhengxiong, Ma Jianguo, Shao Guiyi, Hu Yi, Zhang Yu, Zhang Lihua,
Huang Junjie, Chen Xiaoguo, Peng Chi, He Jian, Rao Binbin, Ren Wei.
Guidelines for Drawing Ice Maps in Power Grids
1 Scope
This standard stipulates the drawing rules for distribution maps of the ice network, including basic data, ice thickness calculation, drawing and revision of ice distribution maps, etc.
This standard applies to 110 (66) kV and above AC and DC voltage level grid ice distribution map, 35kV and below AC and DC
Voltage level grid can be used as reference.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article
Pieces. For undated references, the latest version (including all amendments) applies to this document.
Specification for GB 50061 66kV and below overhead power lines
Design Specification for GB 50545 110kV~750kV Overhead Transmission Lines
GB 50665 1000kV Overhead Transmission Line Design Specification
DL/T 741 overhead transmission line operation procedure
DL/T 5158 Technical Specification for Meteorological Survey of Power Engineering
QX/T 45 Ground Weather Observation Specification
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
Rain glaze
The supercooled water droplets with large particle diameters collide with the surface of objects with a temperature of 0°C and below, forming a glassy transparent or matte surface with rough
Ice cover. The ice is transparent and strong, with high density and strong adhesion.
3.2
Haze softrime
The supercooled water droplets with smaller particle diameters, which float with the airflow, collide with the surface of an object with a temperature of 0°C or less and are instantly frozen into small ice particles. Ice grain
There are pores between, with white appearance and granular structure, low density, weak adhesion.
3.3
Mixed 凇hardrime
The supercooled water droplets of different particle sizes float with the air flow. At the moment of collision, some are rainy and some are hazy. Translucent ice
Shape, medium density, with a certain degree of adhesion.
3.4
Rainy day glazeday
The date of the rainstorm.
3.5
Smoky day rimeday
The date of haze.
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