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GB/T 31487.3-2015 English PDF (GBT31487.3-2015)

GB/T 31487.3-2015 English PDF (GBT31487.3-2015)

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GB/T 31487.3-2015: Direct current de-icing devices -- Part 3: Tests

This Part of GB/T 31487 specifies the basic requirements of type tests, routine tests, field tests, periodical tests and equivalent tests of direct current de-icing devices. This Part applies to thyristor-based DC de-icing devices of 500kV and below AC transmission lines. For the DC de-icing devices of other voltage classes and based on other power devices, it may reference to this Part.
GB/T 31487.3-2015
GB
NATIONAL STANDARD OF THE
PEOPLE REPUBLIC OF CHINA
ICS 29.240.99
K 46
Direct current de-icing devices - Part 3. Tests
ISSUED ON. MAY 15, 2015
IMPLEMENTED ON. DECEMBER 01, 2015
Issued by.
General Administration of Quality Supervision, Inspection
and Quarantine of the PEOPLE Republic of China;
Standardization Administration of the PEOPLE Republic of
China.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Terms and definitions ... 5
4 Type Test and Routine Test ... 9
5 Field test ... 23
6 Routine test and de-icing simulation test ... 34
Foreword
GB/T 31487 Direct current de-icing devices is divided into 3 parts.
?€? Part 1. System design and application guide;
?€? Part 2. Thyristor valves;
?€? Part 3. Tests.
This Part is Part 3 of GB/T 31487.
This Part is drafted based on the provisions provided in GB/T 1.1-2009. This Part was proposed by China Electrical Equipment Industrial Association. This Part shall be under the jurisdiction of National Technical Committee of Power Electronics Standardization (SAC/TC 60).
The drafting organizations of this Part. Southern Power Grid Research Institute Co., Ltd., Nanjing Nari-Relays Electric Co. Ltd., Southwest Electric Power Design Institute, Xi'an High Voltage Apparatus Research Institute Co., Ltd., China Southern Power Grid EHV Power Transmission Company, Guizhou Electric Power Test Research Institute, Yunnan Electric Power Test Research Institute, Xian XD Power Systems Co., Ltd., Yunnan Power Grid Zhaotong Power Supply Bureau, Electric Power Research Institute of Guangdong Power Grid Co., Ltd., Zhejiang Electric Power Corporation Electric Power Research Institute, China EPRI Science and Technology Co., Ltd., Rongxin Power Electronic Co., Ltd., Xuji Flexible Transmission System company, Changzhou Borui Electric Power Automation Equipment Co., Ltd. and Zhejiang Guirong Xieping Technology Co., Ltd.
The main drafters of this Part. Fu Chuang, Rao Hong, Tian Jie, Yang Xiaohui, Lu Zhiliang, Li Xiaolin, Wu Yimin, Xu Shukai, Sun Peng, Ma Xiaohong, Zhao Yongtao, Sun Wei, Jia Genmao, Chen Chihan, Zhao Lijin, Liu Yan, Peng Xiangyang, Zhang Fanyong, Yang Tanghua, Zhang Xiang, Ling Gang, Yu Bo, Zhang Xun, Lang Jiaping, Li Changning, Wan Ming, Wu Huaneng, zhang Guangtai, He Qinglian and Liang Chen.
Direct current de-icing devices - Part 3. Tests
1 Scope
This Part of GB/T 31487 specifies the basic requirements of type tests, routine tests, field tests, periodical tests and equivalent tests of direct current [Translator. hereafter abbreviated as DC] de-icing devices.
This Part applies to thyristor-based DC de-icing devices of 500kV and below AC transmission lines. For the DC de-icing devices of other voltage classes and based on other power devices, it may reference to this Part.
2 Normative references
The following documents are indispensable for application of this document. For the dated documents so quoted, only the dated versions apply to this document. For the undated documents so quoted, the latest versions (including all modification sheets) apply to this document.
GB 1094.1-2013 Power transformers - Part 1. General
GB/T 1094.6-2011 Power transformers - Part 6. Reactors
GB/T 1094.10 Power transformers - Part 10. Determination of sound levels GB 1984-2014 High-voltage alternating-current circuit-breakers
GB 1985-2014 High-voltage alternating-current disconnectors and earthing switches GB/T 3859.1-2013 Semiconductor converters - General requirements and line commutated converters - Part 1-1. Specification of basic requirements
GB/T 7261-2008 Basic testing method for relaying protection and security automatic equipment
GB/T 11022-2011 Common specifications for high-voltage switchgear and controlgear standards
GB/T 11024.1-2010 Shunt capacitors for a.c. power systems having a rated voltage above 1 000 V - Part 1. General
GB/T 17623 Determination of componental contents of gases dissolved in insulating oil by gas chromatography method
GB/T 18494.2-2007 Convertor transformers - Part 2. Transformers for HVDC applications
GB/T 20297 Static Var Compensator field tests
GB/T 20840.8-2007 Instrument transformers - Part 8. Electronic current transformers GB/T 20990.1-2007 Thyristor valves for high voltage direct current (HVDC) power transmission - Part 1. Electrical testing
GB/T 26216.1-2010 DC current measuring device for HVDC transmission system - Part 1. Electronic DC current measuring device
GB/T 26217-2010 DC voltage measuring device for HVDC transmission system GB/T 29629-2013 Water cooling equipment for static var compensators
GB 50150-2006 Standard for hand-over test of electric equipment electric equipment installation engineering
GB 50171 Erection works of electrical installations - Code for construction and acceptance of switchboard outfit, complete cubicle and secondary circuit GB/T 31487.1-2015 Direct current de-icing devices - Part 1. System design and application guide
3 Terms and definitions
The following terms AND definitions defined in GB/T 21487.1-2015 apply to this document. For ease of use, some terms and definitions in GB/T 21487.1-2015 are listed here. 3.1
DC de-icing
DC is applied to the wires or ground wires of iced transmission lines to remove line icing by current?€?s heating effect.
[GB/T 31487.1-2015, definition 3.1]
3.2
DC de-icing device
A device to provide steady and adjustable DC to iced transmission lines, so as to heat the line and melt the covering ice.
[GB/T 31487.1-2015, definition 3.2]
3.3
zero power test
The DC de-icing device is shorted at its DC side by a reactor to rise the DC to the set point, so as to check the DC control function and current withstand capability of the DC de-icing device.
[GB/T 31487.1-2015, definition 3.17]
3.20
induced voltage of power frequency
A power frequency voltage that is induced in DC de-icing circuits by AC line operating nearby during the de-icing period.
[GB/T 31487.1-2015, definition 3.18]
3.21
induced current of power frequency
A power frequency current that is induced in DC de-icing circuits by AC line operating nearby during the de-icing period.
[GB/T 31487.1-2015, definition 3.19]
3.22
coefficient of current distribution
The ratio OF the mean of the parallel operating branch current TO the maximum branch current, when the thyristor valve of DC de-icing device adopts a dual-bridge parallel type. [GB/T 31487.1-2015, definition 3.20]
4 Type Test and Routine Test
4.1 Thyristor Valve
4.1.1 Test Items
The type test and routine test of the thyristor valve of a DC de-icing device is shown as Table 1.
Table 1 Test Items of the Thyristor Valve
Name of Test Type of Test Test Methods and Criteria Type Test Routine Test Insulation DC voltage test of valve ??? ?€? Carried out according to 6.3.1 of Heat exchange test ??? ??? Carried out according to 8.2.7 of GB/T 29629-2013 Noise measurement test ??? __ Carried out according to 8.2.8 of GB/T 29629-2013 Control-protection performance
test ??? ???
Carried out according to 8.2.9 of GB/T
29629-2013
Electromagnetic compatibility
test ??? __
Carried out according to 8.2.10 of GB/T
29629-2013
Communication and Interface
Test ??? ???
Carried out according to 8.2.11 of GB/T
29629-2013
Continuous operation test ??? ??? Carried out according to 8.2.12 and 8.3of GB/T 29629-2013 4.3 Convertor Transformers
The test items of the type test and routine test of the convertor transformer of DC de-icing devices are shown as Table 3.
Table 3 Test Items of the Convertor Transformer
Name of Test Type of Test Test Methods and Criteria Type Test Routine Test Winding resistance
measurement ?€? ???
Carried out according to 11.2 of GB
1094.1-2013
Voltage ratio measurement and
connection stack verification ?€? ???
Carried out according to 11.3 of GB
1094.1-2013
Short-circuit impedance and
load loss measurement ?€? ???
Carried out according to 11.4 of GB
1094.1-2013
commutating reactance
measurement and inductive
reactance voltage drop
measurement
?€? ??? Carried out according to 6.1 of GB 18494.2-2007
No-load loss and no-load
current measurement ?€? ???
Carried out according to 11.5 of GB
1094.1-2013
insulating oil test ?€? ??? Carried out according to GB/T 17623and 11.9 of GB/T GB 1094.1-2013 Insulation resistance
measurement ?€? ???
Carried out according of GB
1094.1-2013
Lightning impulse test ??? ??? Carried out according to 11.4.2 of GB/T 18494.2-2007 Temperature rise test ??? ?€? Carried out according to 11.5 of GB/T 18494.2-2007 Noise level determination ??? ?€? Carried out according of GB/T 1094.10
Applied DC voltage withstand
test including partial discharge
measurement
??? ??? Carried out according to 11.4.3 of GB/T 18494.2-2007
4.4 DC Voltage Measuring Equipment
The test items of the type test and routine test of the DC voltage measuring equipment of DC de-icing devices are shown as Table 4.
Table 4 Test Items of the DC Voltage Measuring Equipment
Name of Test Type of Test Test Methods and Criteria Type Test Routine Test Lightning impulse voltage test ??? ?€? Carried out according to 8.3.1.1 of GB/T 26217-2010 DC dry/wet withstand voltage test ??? ?€? Carried out acc...

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