Power Research

Open Access Open Access  Restricted Access Subscription Access
Open Access Open Access Open Access  Restricted Access Restricted Access Subscription Access

Condition Assessment of HVDC Cables during their Lifecycle


Affiliations
1 HIGHVOLT Prüftechnik Dresden GmbH, Marie-Curie-Str. 10, 01109 Dresden, Germany
     

   Subscribe/Renew Journal


Recent market developments towards power generation in remote renewable power plants such as concentrated solar power plants in deserts or large off-shore wind parks, raise an interest for long distance power transmission via extruded HVDC cables. HVDC cables require quality assurance during the complete product lifecycle, mainly: a) R&D activities for design verification and - validation b) routine tests in the factory for confirmation of proper manufacturing c) acceptance test after erection and commissioning to exclude defects caused during transport and installation d) ageing monitoring and quick fault detection and location detection during service life. Considering increasing voltage levels, increasing cable lengths and ground or even offshore installation, the dielectric testing of extruded HVDC cables in the factory and on site remains challenging. The long-term validation of insulation coordination requires high voltages for quality assurance tests which represent typical expectable stresses during service. Typical examples are wave shape, partial discharge behavior and dielectric field stress in the insulation medium. Hence, different technical solutions are available to generate these required high voltages for testing of HVDC cables. This paper discusses essential technical and commercial aspects of HVDC cable quality assurance and presents suitable methods for HVDC cable testing.

Keywords

Fault Location, HVDC Cable Test Standards, HVDC Cables Test Equipment, On-line Monitoring.
User
Subscription Login to verify subscription
Notifications
Font Size

  • Beyer M, Horeth A, Jochim M: Electrical test demands in a HVDC power cable life. 2020 International Conference on Diagnostics in Electrical Engineering (Diagnostika); 2020. https://doi.org/10.1109/Diagnostika49114.2020.9214623 DOI: https://doi.org/10.1109/Diagnostika49114.2020.9214623

  • Pietsch, R. After installation tests of extruded AC and DC cables - Test procedures and their physical background. CIGRE SCDI Colloquium; Rio de Janeiro; Brazil; 2015.

  • IEC 62895: 2017. High voltage direct current (HVDC) power transmission - Cables with extruded insulation and their accessories for rated voltages up to 320 kV for land applications - Test methods and requirements; 2017.

  • CIGRE Technical Brochure no. 496. Recommendations for testing DC extruded cable systems for power transmission at a rated voltage up to 500 kV.

  • Hauschild W, Lemke E. High voltage test and measuring techniques.

  • IEC 60270: 2000-12. Chapter 11: Partial discharge measurements during tests with direct voltage; 2012.

  • IEC 60270: 2015-11: High-voltage test techniques - Partial discharge measurements Amendment 1; 2015.

  • Pietsch R, Hinow M, Steiner T. Herausforderungen an die Prüftechnik für das Prüfen von HVDC-Kabeln, Isoliersysteme, VDE Verlag GmbH; 2010.

  • Pietsch R, Böhme F. Onlinefehlerortung an Gleich- und Wechselstromhochspannungskabeln. ew-Magazin: 2016.

  • Coors P, Pietsch R, Fenger M, Gustavson K, Sjöberg M, Woschitz R. ISH 2011-08: Application of AC test voltage during factory testing of super long HVDC cables, VDE Verlag GmbH.


Abstract Views: 96

PDF Views: 0




  • Condition Assessment of HVDC Cables during their Lifecycle

Abstract Views: 96  |  PDF Views: 0

Authors

Stefan Bergmann
HIGHVOLT Prüftechnik Dresden GmbH, Marie-Curie-Str. 10, 01109 Dresden, Germany

Abstract


Recent market developments towards power generation in remote renewable power plants such as concentrated solar power plants in deserts or large off-shore wind parks, raise an interest for long distance power transmission via extruded HVDC cables. HVDC cables require quality assurance during the complete product lifecycle, mainly: a) R&D activities for design verification and - validation b) routine tests in the factory for confirmation of proper manufacturing c) acceptance test after erection and commissioning to exclude defects caused during transport and installation d) ageing monitoring and quick fault detection and location detection during service life. Considering increasing voltage levels, increasing cable lengths and ground or even offshore installation, the dielectric testing of extruded HVDC cables in the factory and on site remains challenging. The long-term validation of insulation coordination requires high voltages for quality assurance tests which represent typical expectable stresses during service. Typical examples are wave shape, partial discharge behavior and dielectric field stress in the insulation medium. Hence, different technical solutions are available to generate these required high voltages for testing of HVDC cables. This paper discusses essential technical and commercial aspects of HVDC cable quality assurance and presents suitable methods for HVDC cable testing.

Keywords


Fault Location, HVDC Cable Test Standards, HVDC Cables Test Equipment, On-line Monitoring.

References





DOI: https://doi.org/10.33686/prj.v18i1.222160