VGB Standard Implementation guideline for motors and variable-speed power drive systems VGB-S-168-00-2013-12-EN Editor: VGB PowerTech e.v. Publisher: VGB PowerTech Service GmbH Verlag technisch-wissenschaftlicher Schriften Klinkestr. 27-31, 45136 Essen Tel.: +49 201 8128-200 Fax: +49 201 8128-329 Email: mark@vgb.org ISBN 978-3-86875-747-7 Reproduction in whole or in part is permissible only with the prior permission of VGB PowerTech. www.vgb.org
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Preface This VGB Standard, Implementation guideline for motors and variable-speed power drive systems has been compiled as a new standard by the VGB Project Group of the same name. It is a continuation of the Supplementary Agreements for the Supply of High-Voltage Electric Motors for Use in Power Plants (ZLM) and Supplementary Agreements for the Supply of Converter Drives for Use in Power Plants (ZLU) published by VDEW, and integrates the new requirements and capabilities resulting from the use of medium voltage motors and variable-speed power drive systems. The recommendations of the ZLM and ZLU, previously separate, have now been combined in a new VGB Standard. The new edition also resulted from the need to incorporate the requirements of new standards and regulations. For compilation of this Standard, the VGB Working Panel on Electrical Equipment established a Project Group in which experts from European power plant operators and manufacturers were represented. The aim of this VGB Standard is to provide an effective aid to the parties involved in the planning and specification of motors and variable-speed power drive systems (especially design engineers, operators and manufacturers) by means of extensive harmonization. Account is taken of fundamental process and electrical engineering design requirements including the necessary quality standards for the motors and variable-speed power drive systems in power plants. The harmonization achieved also promotes effectiveness and economy among manufacturers, designers and operators. This VGB Standard has been compiled on the basis of the best professional knowledge available, but cannot claim to be exhaustive. It therefore has the character of a recommendation and cannot therefore replace the know-how of the users. Essen, December 2013 VGB PowerTech e.v. 4
The following authors made essential contributions to the compilation of this VGB- Standard: List of authors Adolf Bader Ralf Drews Jörg Emmerich Joachim Eussem Volker Götz Rainer Hasenschwanz Jörg Kaiser Willibert Kamps Frank Körnert Dr. Thomas Krüger Klaus Landwehr Michael Linek Michael Lüpke Dr. Wolfgang Planitz Walther Stojer Dirk Weidemann Dr. Holger Wrede Siemens AG Industry Sector, Erlangen ABB AG, Mannheim EnBW Erneuerbare und konventionelle Erzeugung AG, Stuttgart ATB Schorch GmbH, Mönchengladbach Stadtwerke Düsseldorf AG, Düsseldorf Siemens AG Industry Sector, Ruhstorf VGB PowerTech e.v., Essen ATB Schorch GmbH, Mönchengladbach Vattenfall Europe Wärme AG, Berlin Vattenfall Europe Generation AG, Cottbus RWE Technology GmbH, Essen GE Power Conversion, Berlin Stadtwerke Hannover AG, Hanover Vattenfall Europe Nuclear Energy GmbH, Hamburg ELIN Motoren GmbH, Preding/Weiz (Austria) VEM Sachsenwerk GmbH, Dresden E.ON New Build and Technology GmbH, Gelsenkirchen The VGB thanks all those companies involved in the creation of this VGB Standard and the members of staff appointed to perform the work. 5
Contents 1 General... 9 1.1 Scope of applicability... 9 1.2 Coming into force... 10 1.3 Technical standards... 11 1.4 Terms and definitions... 11 1.5 Limits to the scope of supply... 12 1.5.1 Limits to the scope of supply for motors... 13 1.5.2 Limits to the scope of supply for the converter transformer... 13 1.5.3 Limits to the scope of supply for the converter... 13 1.6 General notes on design... 14 1.6.1 Voltage-related operating behaviour... 14 1.6.2 Duty type and direction of rotation... 16 1.6.3 Starting frequency and starting characteristics... 17 1.6.4 Noise / sound level... 17 1.6.5 Service life and replaceability... 18 1.6.6 Details of the cooling water system... 18 1.7 Documentation... 19 1.7.1 Documentation for motors... 20 1.7.2 Documentation for converters... 21 1.7.3 Documentation for converter transformers... 22 1.8 Labelling... 23 1.9 Inspections and tests... 23 1.10 Transport... 23 1.11 Quality Management and Quality Assurance... 24 1.12 Safety... 24 1.12.1 Personnel safety... 24 1.12.2 Hazard assessment... 25 2 Motors... 26 2.1 General information... 26 2.1.1 Installation conditions... 26 2.1.2 Type of construction... 26 2.1.3 Rated output... 26 2.1.4 Degrees of protection... 26 2.1.5 Corrosion protection... 26 2.2 Structural and mechanical design... 27 2.2.1 Cooling... 27 2.2.2 Cable termination and neutral point boxes... 27 2.2.3 Additional terminal boxes... 28 2.2.4 Earthing terminals... 29 2.2.5 Bearings... 29 2.2.5.1 Anti-friction bearings... 29 2.2.5.2 Plain bearings... 30 2.2.6 Shafts... 31 2.2.7 Alignment... 31 2.2.8 Mechanical vibrations... 31 6
2.2.9 Personnel safety... 31 2.3 Electrical design... 32 2.3.1 Stator winding... 32 2.3.2 Dissipation factor... 32 2.3.3 Partial discharge measurements... 33 2.3.4 Rotor winding... 33 2.3.5 Transfer switching resistance... 33 2.3.6 Special requirements for operation with a converter... 33 2.4 Protection and monitoring... 34 2.4.1 Motor protection... 34 2.4.2 Monitoring... 34 2.5 Tests... 35 3 Converters... 38 3.1 General information... 38 3.1.1 Installation conditions... 38 3.1.2 Structure... 38 3.1.3 Rated output... 39 3.1.4 Degree of protection... 39 3.1.5 Corrosion protection and colour scheme... 39 3.2 Structural and mechanical design... 39 3.2.1 Cooling... 39 3.2.2 Cable entries... 41 3.2.3 Terminals... 42 3.2.4 Cabinet structure... 42 3.2.5 Personnel safety... 42 3.3 Electrical design... 43 3.3.1 Electrical power supply... 43 3.3.2 Interface with the I&C system... 43 3.3.3 Network disturbances and electromagnetic compatibility... 44 3.3.4 Open loop and closed loop control and operator control... 47 3.4 Protection and monitoring... 47 3.5 Tests... 48 4 Converter transformers... 50 4.1 General information... 50 4.1.1 Installation conditions... 50 4.1.2 Structure... 51 4.1.3 Rated output... 51 4.1.4 Degree of protection... 51 4.1.5 Corrosion protection and colour scheme... 51 4.2 Structural and mechanical design... 52 4.2.1 Cooling... 52 4.2.2 Core... 52 4.2.3 Windings... 52 4.2.4 Tanks (for oil-immersed transformers)... 52 4.3 Electrical design... 53 4.3.1 General... 53 4.3.2 Rated voltage... 53 7
4.3.3 Short-circuit strength... 53 4.4 Protection and monitoring... 54 4.5 Tests and documentation... 54 5 Bibliography... 56 6 Abbreviations... 61 7 Tables... 62 8 Figures... 63 8