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GB/T 30425-2025 English PDF

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GB/T 30425-2025: Water cooling equipment for converter valves for high voltage direct current(HVDC) ower transmission
Status: Valid

GB/T 30425: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 30425-2025English539 Add to Cart 5 days [Need to translate] Water cooling equipment for converter valves for high voltage direct current(HVDC) ower transmission Valid GB/T 30425-2025
GB/T 30425-2013English439 Add to Cart 4 days [Need to translate] Water cooling equipment for converter valves for high voltage direct current (HVDC) power transmission Valid GB/T 30425-2013

PDF similar to GB/T 30425-2025


Standard similar to GB/T 30425-2025

GB/T 39572.1   GB/T 37404   GB/T 31487.3   GB/T 30843.1   GB/Z 30424   

Basic data

Standard ID GB/T 30425-2025 (GB/T30425-2025)
Description (Translated English) Water cooling equipment for converter valves for high voltage direct current(HVDC) ower transmission
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard K46
Classification of International Standard 29.200
Word Count Estimation 26,270
Date of Issue 2025-04-25
Date of Implementation 2025-11-01
Older Standard (superseded by this standard) GB/T 30425-2013
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 30425-2025: Water cooling equipment for converter valves for high voltage direct current (HVDC) power transmission


---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.
National Standard of the People's Republic of China ICS 29.200CCS K 46 HVDC converter valve water cooling equipment Water cooling equipment for converter valves for high voltage direct current (HVDC) power transmission 2025-04-25 Release 2025-11-01 Implementation State Administration for Market Regulation The National Standardization Administration issued Replaces GB/T 30425-2013

Table of contents

Preface Ⅲ 1 Scope...1 2 Normative references ...1 3 Terms and Definitions 1 4 Product specifications and models...2 4.1 Product Specifications 2 4.2 Product Model...2 5 General Conditions of Use 3 5.1 Valve Hall 3 5.2 Water cooling equipment room...3 5.3 Outdoor Environment 3 5.4 External cooling water 3 5.5 Power supply 3 6 Technical requirements...4 6.1 Technical Parameters 4 6.2 Configuration and Functions 4 6.3 Appearance 9 6.4 Dielectric strength 9 6.5 Grounding resistance 9 6.6 Noise 9 6.7 Annual availability 10 6.8 Materials, manufacturing, installation and cleaning of water cooling equipment and pipelines...10 7 Experiments 10 7.1 Overview 10 7.2 Type test 11 7.3 Factory test 14 7.4 Field Test 14 8 Packaging, transportation and storage...15 8.1 Packaging 15 8.2 Transportation 16 8.3 Storage 16 9 Logo...16 Appendix A (Informative) Water Cooling Equipment Selection Parameters and Configuration Requirements ...17 References ...18 Figure 1 Water cooling equipment model 2 Figure 2 Water cooling equipment flow chart ...5 Figure 3 Schematic diagram of the connection between the water cooling equipment control and protection system and the converter station DC control and protection system ...9 Table 1 Conductivity and pH value of internal cooling water 4 Table 2 Test items...10 Table A.1 Water cooling equipment selection parameters and configuration requirements ...17

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents" Drafting is required. This document replaces GB/T 30425-2013 "Water Cooling Equipment for High Voltage Direct Current Transmission Converter Valves". Compared with GB/T 30425-2013, In addition to structural adjustments and editorial changes, the main technical changes are as follows. -- Added the terms "(HVDC converter valve) water cooling equipment", "rated cooling capacity", "rated cooling power", "rated flow Quantity” (see 3.1, 3.5, 3.6); -- The terms "indirect cooling", "forced circulation", "forced cooling", "heat transfer coefficient" and "logarithmic mean temperature difference" have been deleted (see the.2013 edition 3.3, 3.4, 3.8, 3.9); --The definitions of the terms "internal cooling water" and "external cooling water" have been changed (see 3.7, 3.8, 3.6, 3.7 of the.2013 edition); --Changed the product specification range (see 4.1, 4.1 of the.2013 edition); --Changed the rules for compiling water cooling equipment models (see 4.2, 4.2 of the.2013 edition); --Changed the outdoor environmental conditions (see 5.3, 5.3 of the.2013 edition); --Changed the requirements for external cooling water (see 5.4, 5.4 of the.2013 edition); --Changed the requirements for power supply (see 5.5.1, 5.5.1 of the.2013 edition); --Changed the requirements for control power supply (see 5.5.2, 5.5.2 of the.2013 edition); --Deleted "other requirements" (see 5.5.3 of the.2013 edition); --Changed the flow requirements of internal cooling water (see 6.1.3, 6.1.3 of the.2013 edition); --Changed the general requirements for configuration and function (see 6.2.1, 6.2.1 of the.2013 edition); -- Deleted the requirements for electric motors (see 6.2.2 of the.2013 edition); -- Deleted the requirements for pumps and main circulation pump configuration, and added requirements for main circulation pumps and spray pumps (see 6.2.2, 6.2.3,.2013 Version 6.2.3, 6.2.7); -- Deleted the requirements for cooling fans (see 6.2.4 of the.2013 edition); --Deleted key equipment configuration and merged it into general rules (see 6.2.1, 6.2.1 and 6.2.5 of the.2013 edition); --Change "buffer configuration" to "buffer voltage stabilizing device" (see 6.2.4, 6.2.6 of the.2013 edition); --Changed the requirements for heat exchangers and changed the heat transfer performance requirements (see 6.2.7, 6.2.10 and 6.3 of the.2013 edition); -- Changed the requirements for monitoring instruments (see 6.2.8, 6.2.11 of the.2013 edition); --Changed the general requirements for control and protection systems and the requirements for redundant configuration (see 6.2.12.1, 6.2.12.2,.2013 edition) 6.2.15.1, 6.2.15.2); --Changed the requirements for power supply control (see 6.2.12.3, 6.2.15.3 of the.2013 edition); -- Changed the requirements for standby switching (see 6.2.12.4, 6.2.15.4 of the.2013 edition); -- Changed the temperature control requirements (see 6.2.12.5, 6.2.15.5 of the.2013 edition); --Changed the monitoring requirements for control systems (see 6.2.12.6, 6.2.15.6 of the.2013 edition); -- Changed the requirements for electrical control cabinets (see 6.2.12.7, 6.2.15.7 of the.2013 edition); --Change "external cooling water hardness monitoring" to "external cooling water quality monitoring" (see 6.2.12.10, 6.2.15.10 of the.2013 edition); -- Changed the requirements for alarm signals (see 6.2.12.12, 6.2.15.12 of the.2013 edition); -- Changed the requirements for tripping signals (see 6.2.12.13, 6.2.15.13 of the.2013 edition); --Added "Interface Requirements" related content (see 6.2.12.14); -- Changed the requirements for appearance (see 6.3, 6.4 of the.2013 edition); --Changed the relevant requirements for insulation strength (see 6.4, 6.5 of the.2013 edition); --Changed the requirements for grounding resistance (see 6.5, 6.6 of the.2013 edition); --Changed the noise related requirements (see 6.6, 6.7 of the.2013 edition); -- Changed the relevant requirements for materials (see 6.8.1, 7.1 of the.2013 edition); --Added "non-destructive testing" related content (see 6.8.2.2); -- Changed the relevant requirements for installation (see 6.8.2.3, 7.2.2 of the.2013 edition); -- The requirement that factory tests must include heat transfer performance tests has been deleted (see 8.1 of the.2013 edition); -- The requirement that type tests must include communication and interface tests has been deleted (see 8.1 of the.2013 edition); --Changed the insulation test requirements (see 7.2.2, 8.2.2 of the.2013 edition); --The requirements for air pressure test have been changed (see 7.2.4.2, 8.2.4.2 of the.2013 edition); --Added the test sample requirements for heat transfer performance test and changed the test method for heat transfer performance test (see 7.2.7,.2013 edition) 8.2.7); --Changed the requirements for noise measurement (see 7.2.8, 8.2.8 of the.2013 edition); -- Changed the electromagnetic compatibility test requirements (see 7.2.10, 8.2.10 of the.2013 edition); --Changed the requirements for factory testing (see 7.3, 8.3 of the.2013 edition); -- Changed the requirements for field tests (see 7.4, 8.4 of the.2013 edition); -- Changed the relevant requirements for labeling (see Chapter 9, Chapter 10 of the.2013 edition). Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document was proposed by the China Electrical Equipment Industry Association. This document is under the jurisdiction of the National Technical Committee for Standardization of Power Electronics Systems and Equipment (SAC/TC 60). This document was drafted by. Xi'an XD Electric Power System Co., Ltd., Xi'an High Voltage Electrical Equipment Research Institute Co., Ltd., State Grid Corporation of China The company's DC Technology Center, State Grid Economic and Technological Research Institute Co., Ltd., China Southern Power Grid Research Institute Co., Ltd., Henan Jingrui Cooling Technology Co., Ltd., Changzhou Borui Electric Automation Equipment Co., Ltd., Xuji Electric Co., Ltd., Guangzhou Gaolan Energy Saving Technology Co., Ltd. Co., Ltd., State Grid Sichuan Electric Power Company UHV DC Center, State Grid Smart Grid Research Institute Co., Ltd., China Southern Power Grid Co., Ltd. The Electric Power Research Institute of the Ultra-High Voltage Transmission Company of China Southern Power Grid Co., Ltd., the Kunming Bureau of the Ultra-High Voltage Transmission Company of China Southern Power Grid Co., Ltd., and the State Grid Jiangsu Provincial Electric Power Co., Ltd. Electric Power Research Institute, Nanjing NARI Relay Protection Engineering Technology Co., Ltd., China Electric Purui Electric Power Engineering Co., Ltd., State Grid Fujian Electric Power Co., Ltd. Electric Power Research Institute, Shandong Taikai Power Electronics Co., Ltd., Beijing Guodian Futong Technology Development Co., Ltd. Company, Xi'an Electric Power Electronics Technology Research Institute Co., Ltd., China Southern Power Grid Co., Ltd. Ultra-high Voltage Transmission Company Dali Branch, Xiangbo Transmission Thermal Technology Co., Ltd. and State Grid Sichuan Electric Power Co., Ltd. Electric Power Research Institute. The main drafters of this document are. Jiao Xiuying, Zhou Huigao, Gao Shengfu, Han Haiyin, Tong Congwei, Wei Wei, Wang Qiang, Chen Wu, Cai Changqun, Xu Fan, Yang Xiaohui, Qiu Miaosheng, Huang Yu, Liu Qian, Zhou Jianhui, Jiang Long, Wang Zhen, Li Lingfei, Xu Zimeng, Feng Jingbo, Huang Jianxiang, Xu Yang, Jiang Nan, Hou Junyi, Xiao Kai, Chao Wujie, Lei Yazhou, Qin Weizhen, Zhang Jiabin, Ren Haiying, Hu Zhilong, Zhang Teng, Huang Chao, Li Jingliang, Dong Tianhua, Zhang Yining, Xu Hongzheng, Chen Yang, Wang, Xiaoyang, Liu, Jinsong, Xia, Zhiyu, Liao, Wenlong, and Zhong, Qidi. This document was first published in.2013 and this is the first revision. HVDC converter valve water cooling equipment

1 Scope

This document specifies the product specifications and models, general use conditions, technical requirements, test Inspection, packaging, transportation and labeling, etc. This document applies to water cooling equipment for HVDC converter valves.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document. GB/T 3767 Acoustics - Determination of sound power level and sound energy level of noise source by sound pressure method - Engineering method for approximate free field above reflecting surface GB/T 3859.1 General requirements for semiconductor converters and grid-commutated converters Part 1-1.Basic requirements specification GB/T 4025 Basic and safety rules for marking and identification of human-machine interfaces Coding rules for indicators and operating devices GB/T 7190.3-2019 Mechanical ventilation cooling tower Part 3.Closed cooling tower GB/T 7251.1-2023 Low-voltage switchgear and controlgear Part 1.General GB/T 13384 General technical requirements for packaging of electromechanical products GB/T 14296-2008 Air coolers and air heaters GB/T 17799.2 General standard for electromagnetic compatibility Part 2.Immunity standard for industrial environments GB 17799.4-2022 General electromagnetic compatibility standard Part 4.Emissions in industrial environments GB/T 29531-2013 Pump vibration measurement and evaluation method GB 50235 Industrial Metal Pipeline Engineering Construction Specification NB/T 47007 Air-cooled heat exchanger NB/T 47013.2-2015 Nondestructive testing of pressure equipment Part 2.Radiographic testing

3 Terms and definitions

The terms and definitions defined in GB/T 3859.1 and the following apply to this document. 3.1 (High Voltage Direct Current Converter Valve) Water Cooling Equipment Equipment All equipment required to remove the heat generated by HVDC converter valves and transfer it to the external environment. Note. The water cooling equipment mainly includes the main circulation pump, deionization device, heat exchanger, connecting pipes and control and protection system on the cooling circuit. 3.2 Cooling medium A liquid (such as water) or gas (such as air) that removes heat from the heat exchanger of a water-cooled device. 3.3 Heat transfer agent The liquid that transfers heat from the heat source to the heat exchanger in a water cooling system.

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