GB/Z 34935-2017Technical specifications for oil-immersed smart power transformers (English PDF)

油浸式智能化电力变压器技术规范

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Issued by

State Administration for Market Regulation; Standardization Administration of China

Level / Type

National · Recommended

Issue date

November 1, 2017

Implementation date

November 1, 2017

Scope

GB/Z 34935-2017 is the English-translated version of 油浸式智能化电力变压器技术规范.

GB/Z 34935-2017 is the Chinese national standard on technical specifications for oil-immersed smart power transformers, in the field of electrical engineering. The /Z suffix marks it as a guiding technical document: it does not prescribe requirements that can be certified against, but sets out the technique, the method or the state of the art that the standards bodies recommend following. It was issued on 1 November 2017 by the State Administration for Market Regulation; Standardization Administration of China. As a guiding technical document it carries no separate date of entry into force: it applies from publication. Classification: ICS 29.180, CCS K41. This page is published from the official record of the standard held by the Chinese standards administration: the identification, the dates, the classification and the issuing body are taken from there. The clause text, the tables and the numeric limits are in the document itself, which is delivered complete in English translation.

Document preview — GB/Z 34935-2017

National Standard of the People's Republic of China

ICS: 29.180
Classification: K41

Issued by: State Administration for Market Regulation; Standardization Administration of China

1 Scope1
2 Normative references1
3 Terms and definitions2
4 General3
4.1 intelligent power transformer composition3
4.2 basic functions4
4.3 The main features4
4.4 basic technical requirements4
5 configuration5
5.1 Intelligent Component Configuration Principle5
5.2 Intelligent Component IED Configuration5
5.3 Merge unit6
5.4 non-power protection IED6
5.5 Cooling Device Control IED7
5.6 On-load tap-changer control IED7
5.7 Monitoring IED9
5.8 Master IED10
6 test, commissioning and acceptance11
6.1 Intelligent Component Test11
6.2 transformer body and intelligent components of the joint commissioning12
6.3 Acceptance14
Appendix A (informative) intelligent power transformer diagram15
Appendix B (informative) Intelligent Commissioning Commissioning part of the test data record example17
Figure A.1 Typical Power Transformer Composition15
Figure A.2 Typical intelligent components of an intelligent power transformer16
Figure B.1 high-voltage three-phase voltage and current values17
Figure B.2 Station layer software screenshot18
Figure B.3 Measurement results of dissolved gas in IED during long-term no-load test19
Figure B.4 iron core ground current measurement of long time no load test20
Figure B.5 top oil temperature rise, average oil temperature rise curve24
Figure B.6 Top Oil Temperature Record Curve24
Figure B.7 Oil surface temperature IED data and trends Figure25
Figure B.8 High Temperature A Phase Winding Optical Fiber Temperature IED Data and Trend Figure25
Figure B.9 high-voltage B-phase optical fiber temperature measurement IED data and trends Figure25
Figure B.10 High-voltage C-phase winding fiber temperature measurement IED data and trends Figure26
Figure B.11 core fiber temperature measurement IED data and trends Figure26
Figure B.12 Cooling Unit Control IED Screenshot26
Table 1 transformer intelligent projects and IED configuration5
Table 2 non-power protection IED configuration6
Table 3 cooling device control IED configuration and requirements7
Table 4 on-load tap-changer control IED function and configuration requirements8
Table 5 dissolved gas monitoring oil IED technical requirements9
Table 6 main IED main configuration and requirements11
Table 7 Main IED Auxiliary Configuration and Requirements11
Table B.1 IED measurement voltage and current value of the performance test17
Table B.2 on-load voltage regulation IED performance test18
Table B.3 Oil analysis test and dissolved gas monitoring of IED performance test19
Table B.4 laboratory test equipment PD measurement results20
Table B.5 partial discharge monitoring IED performance test results21
Table B.6 operating impact test voltage parameters and waveform22
Table B.7 lightning impulse test voltage parameters and waveforms23
Table B.8 Pressure Seal Tests27
Table B.10 non-power protection IED performance test27
Table B.12 Monitoring Primary IED Performance Testing (Bay Equipment)28
Table B.13 Measurement and control unit performance test (spacer device)28

Foreword

This instructional document has been drafted in accordance with the rules given in GB/T 1.1-2009. This guidance document is proposed by China Electrical Equipment Industry Association. The guidance of technical documents by the National Standardization Technical Committee Transformer (SAC/TC44) centralized. The drafting of the guidance of technical documents. China Electric Power Research Institute, Shenyang Transformer Research Institute Co., Ltd., Shandong Electric Power Co., Ltd., Beijing Sifang Automation Co., Ltd., Shanghai Rui Kai Electric Co., Ltd., Xi'an XD Power Transformer Co., Ltd. Secretary, Baoding Tianwei change Electric Co., TBEA Hengyang Transformer Co., Ltd., Dalian World Friends Power Technology Co., Ltd. The main drafters of this guidance document are Gao Fei, Zhang Xianzhong, Li Bo, Zhang Zhongguo, Liu Youwei, Zhao Xiaoyu, Li Jinzhong, Wang Xingang, Huang Xin, Wang Fu, Ying Ying, Cheng Congming, Zhang Yongxin, Deng Yan Guo, Xiao Yan, Tang Hao, Zhang Shuqi, Jia Pengfei, Yu Xinru, Wang Shiyou. Technical Specification for Oil - immersed Intelligent Power Transformer

1 Scope

This Guidance Document defines the terms and definitions, general rules, configuration, testing, commissioning and acceptance of oil-immersed intelligent power transformers. The guidance of technical documents applicable to the system nominal voltage of 66kV ~ 750kV oil-immersed intelligent power transformers (hereinafter referred to as "Smart Transformer") design, manufacture, testing and selection. Other smart transformer design, manufacture, inspection and selection, etc. can refer to the implementation of this technical guidance.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 1094.1 Power Transformers Part 1. General

GB/T 1094.2 Power transformers - Part 2. Temperature rise of liquid immersed transformers

GB/T 1094.3 Power Transformer Part 3. Insulation level, insulation test and external insulation air gap

GB/T 1094.4 Power Transformers Part 4. Lightning Impulse and Operating Shock Test Guidelines for Power Transformers and Reactors

GB/T 1094.7 Power transformers - Part 7. Load guidelines for oil - immersed power transformers Power transformers

GB/T 1094.10 Part 10. Determination of sound level

GB/T 2423.1 Environmental testing for electric and electronic products Part 2. Test methods Test A. Low temperature

GB/T 2423.2 Environmental testing for electric and electronic products Part 2. Test methods Test B. High temperature

GB/T 2423.4 Environmental testing for electric and electronic products Part 2. Test methods Test Db. Alternating hot and humid (12h 12h cycle)

GB/T 2900.95 Electrotechnical terminology transformers, voltage regulators and reactors

GB/T 4109 Insulation bushing with AC voltage higher than 1000V

GB/T 6451 oil-immersed power transformer technical parameters and requirements

GB/T 7252 transformer oil dissolved gas analysis and judgment guidelines

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 57 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 1094.1 · GB/T 1094.2 · GB/T 1094.3 · GB/T 1094.4 · GB/T 1094.7 · GB/T 1094.10 · GB/T 2423.1 · GB/T 2423.2 · GB/T 2423.4 · GB/T 2900.95 · GB/T 4109 · GB/T 7252 · GB/T 7354 · GB/T 17626.3-2006 · GB/T 17626.4-2008 · GB/T 17626.5-2008 · GB/T 17626.6-2008 · GB/T 17626.10-1998 · JB/T 10088

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Editions of GB/Z 34935

Edition	Title	Revision	Status
GB/Z 34935-2017	Technical specifications for oil-immersed smart power transformers	current edition	Current

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