GB/T 18494.1-2014Convertor transformers -- Part 1: Transformers for industrial applications (English PDF)

Foreword

GB/T 18494 "Converter transformers" includes the following sections.

--- Part 1. Transformers for industrial use;

--- Part 2. HVDC converter transformer;

--- Part 3. Application guide.

This section GB/T Part of 118,494.

This section drafted in accordance with GB/T 1.1-2009 given rules.

This Part replaces GB/T 18494.1-2001 "Converter transformers - Part 1. Transformers for industrial use", and GB/T 18494.1-2001 compared to the main technical changes are as follows.

--- The GB/T 18494.1-2001 only relates to a device with a white body and transformers Converter transformers This section applies to One or more of the body of a transformer in the same tank; the GB/T 18494.1-2001 involves only for star (Y junction), and Angle junction (D junction) to the transformer This section applies to Y junction, D knots and other phase-shifting transformer coupling (such as Z junction, Yanbian three Coupling angle, polygon links, etc.);

--- Increasing the converter transformer classification. Standardize the classification and application of the converter, the normal conditions of use and non-normal conditions of use;

--- Clear the converter transformer phase shift and terminal identification;

--- Increased the converter transformer nameplate requirements;

--- Increased the unit with filtering and compensating third winding of the provisions;

--- Increasing the on-load tap provisions;

--- Increasing the internal high-current windings current distribution, consumption and described hotspots;

--- Increased inter-column with a core and transformer windings with three or more geometric arrangement and winding magnetically coupled harmonic eddy current loss Impact;

--- Increase the saturation of transformer and reactor voltage drop;

--- Increased insulation test;

With specific emphasis on the load losses when --- Test and saturable reactors total box rectifier transformers and high-current external valve winding busbar A short-circuit structure;

--- Table 1 has been updated to remove part of the link, listed in the table is a common link;

--- Add eight appendices, headings as "variable phase shifting transformer coupling and the terminal ID", "Design Review Guidelines" "GB/T 18494.1 and GB/T 3859.1 relevance rating "" duty cycle Example "" large current valve side winding current distribution measuring "," measured by the turns ratio to determine the amount of voltage transformer ratio and phase shift "," saturated with embedded reactor rectifier transformer load test "," change in the magnetic field Three-dimensional simulation and conduction losses to determine the loss of housing and housing hot press review Housings caused in the calculation. " this section uses redrafted law revision using IEC 61378-1:2011 "Converter transformers - Part 1. Transformers for industrial use." this part of IEC 61378-1:2011 technical differences and their reasons are as follows.

--- In order to meet China's national conditions, in Chapter 1, the highest voltage winding valve device does not exceed 36kV to 40.5kV original text;

--- In order to meet China's national conditions, terminal ID that meets our habits instead of the original terminal identification;

--- On normative references, this part has been adjusted technical differences, in order to adapt our technical conditions, the adjusted situation Focus is reflected in the status of Chapter 2, "Normative references", the specific adjustments are as follows.

- Modify with international standards of GB 1094.1, GB 1094.2, GB 1094.3, GB/T 1094.6, GB 1094.11, GB/T 3859.1-2013 and GB/T 3859.2-2013, respectively, instead of the IEC 60076-1:2011, IEC 60076-2:2011, IEC 60076-3:2000, IEC 60076-6:2007, IEC 60076-11:2004, IEC 60146-1-1:2009 and IEC 60146-1-2:2011;

- non-equivalent to international standards of GB/T 2900.15-1997 instead of IEC 60050 (421).1990;

- Removed IEC 60076 (all parts), IEC 60146 (all parts) and IEC/T R60616. 1978 references.

This section also made the following editorial changes.

--- Note the first chapter of "5.1" to "6.2";

--- Removed in 5.8 "(see description of IEC 60076-1)";

--- The last line of 6.1 "See 5.1 and 7.6" was changed to see "see 6.2 and 7.6";

--- 6.2 adds "n --- calculate the maximum harmonic number";

--- Contents 7.6.3.2 Note 1 by coupling "Every two secondary valve winding phase of close to 100%, see A.2 and A.3. Because this eddy current losses in all windings see A.2 in Description 6-pulse and 12-pulse of A.3. "To" two per phase Winding secondary valve close coupled to 100%. Therefore, the eddy current loss of all windings see E.3 and E.4 sixth pulse 12 pulse Description wave. ";

--- The original text in Appendix A, Appendix B, Appendix C, Appendix E, Appendix F, Appendix G, Appendix H, amend Appendices I and J-oriented Section Appendix E, Appendix I, Appendix F, Appendix B, Appendix J, Appendix H, Appendix G, Appendix A and Appendix C;

--- The original Appendix A (This section Appendix E) in the four "See 6.5" are changed to "see 6.4";

--- The original A.4 (This section E.4) "secondary 2a-2b-2c. I2R = 3 × 23412 × 0.678 × 10-6 × 10-3 = 11.15kW "in" 11.15kW "changed to" 11.15 × 10-3kW ", the" second 3a-3b-3c. I2R = 3 × 40542 × 0.228 × 10-6 × 10-3 = 11.24kW "in" 11.24kW "changed to" 11.24 × 10-3kW ", and later used by the these two values \u200b\u200bwere unified corrections;

--- Delete the contents of the original tables A.7 below "third rated voltage" and the following six lines;

--- The original I.3 (This section A.3) in the first two paragraphs of text adjust to this section A.1 foremost, delete the original I.3 Third paragraph of the text;

--- Number of original formulas were adjusted.

Please note that some of the content of this document may involve patents. Release mechanism of the present document does not assume responsibility for the identification of these patents.

This part is proposed by the China Electrical Equipment Industrial Association.

This part of the National Standardization Technical Committee transformers (SAC/TC44) centralized.

This section is drafted. Shenyang Transformer Research Institute Co., Ltd., Shun Special Electric Equipment Co., Ltd., Xinhua special Electric Co.

Ltd., Wolong Electric Group Beijing Huatai Transformer Co., Pearl Electric Co., Ltd., Baoding Tianwei Electric Company Limited Division, Xi'an Electric Transformer Co., Ltd., TBEA Shenyang Transformer Group Co., Ltd., TBEA Hengyang Transformer Co., Ltd., Xiangtan China Special Transformer Co., Ltd., Guangzhou Zhiguang Electric Co., Ltd., the new features can Transformer Co., Ltd., Jiangsu, Guangzhou Prosperous Electric Co., Ltd., Shenyang Transformer Manufacturing Co., Ltd. and the United States, Wujiang Transformer Co., Ltd., Guangdong Julong Electric Power Equipment Co., Ltd ..

1 Scope

This section GB/T 18494 specifies the technical requirements for the assembly of power transformers and reactors in the semiconductor converter device, provided Design and test, this section does not apply to conventional AC power distribution transformers.

This part of the power converter is suitable for any size of typical applications are. electrolysis thyristor rectifier diode rectifier electrolysis, large Driving power thyristor rectifier, thyristor rectifier waste furnace and a variable speed drive inverter with diode rectifier. This section is also applicable for the buck regulator or autotransformer regulator unit. Highest voltage for equipment not exceeding valve winding 40.5kV.

This section does not apply to HVDC transformers.

While complete sets of equipment standards converter (such as GB/T 3859 or other standards related to particular application) may include converter transformers, A variety of performance assurance and testing requirements (such as insulation, loss) auxiliary transformers and reactors, including the entire device, but this part is still appropriate as for the converter equipment of the transformer itself, guarantee performance and test requirements.

Guaranteed value, run and type testing under this Part, both suitable for use as a component in the converter transformer equipment, but also for Converter equipment used transformers ordered separately. Any additional or special value to ensure verification should be especially in the transformer order contract Instructions.

This section refers to the converter transformer may be a liquid immersion type may also be dry. In addition to meeting the provisions of this section, for immersion variant Pressure is also in line with GB 1094 series of standards; for dry-type transformers shall comply with GB 1094.11.

NOTE. You may use the standard design of distribution transformers in some conventional converter devices in use may need to reduce capacity. This relates to the design of specialized it means the technical requirements of this section without special provisions. However, the formula can be given from the press as well as 6.2 GB/T 13499 to calculate conventional transformer Reducing the value of the capacity.

This section applies to a tank with one or more of the body of [voltage regulator (auto) transformers and one (or two) rectifier transformer] Transformer. Also applies to a band (or more) saturable reactor and (or) phase transformer.

For other combinations not listed above, to identify and measure the total loss for an agreed upon by both parties.

This section applies to the Y junction, D knots and other phase-shifting transformer coupling (such as Z junction, join the Yanbian triangle, polygon links, etc.). shift Phase windings may be provided or regulating transformer rectifier transformer.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document.

GB 1094.1 Power transformers - Part 1. General (GB 1094.1-2013, IEC 60076-1:2011, MOD) GB 1094.2 Power transformers - Part 2. temperature rise of liquid-immersed transformers (GB 1094.2-2013, IEC 60076-2:2011, MOD) GB 1094.3 Power transformers Part 3. Insulation levels, dielectric tests and external insulation air gap (GB 1094.3-2003, eqv IEC 60076-3:2000) GB/T 1094.6 Power transformers - Part 6. Reactors (GB/T 1094.6-2011, IEC 60076-6:2007, MOD) Part 11 GB 1094.11 Power transformers. dry-type transformers (GB 1094.11-2007, IEC 60076-11:2004, MOD) GB/T 2900.15-1997 Electrotechnical terminology transformers,, regulators and reactors [neqIEC 60050 (421).1990,