Abstract
Extruded polymeric HVDC cables have drawn great attention in modern power systems. This paper reviews the history and development of the polymeric HVDC cables and summarizes the key technical problems in extruded HVDC cables. It is pointed out that two key issues should be solved. One is the electric field inversion within HVDC cable insulation which is caused by the temperature and electric field dependent DC volume resistivity of the polymeric insulation materials. The other is the space charge behavior under multi-fields coupling, including charge injection, transportation, accumulation and dissipation characteristics. The following aspects need to be particularly concerned in the future: The interaction between temperature, electric field, space charge and DC volume resistivity under multi-fields coupling; mechanisms of nanoparticles doping on enhancing the properties of polymeric insulation material; the long-Term operation characteristics of nanodielectrics; collaborative optimal regulation methods and theories on the properties of polymeric insulation material; and recyclable insulation materials for future HVDC cables.
| Original language | English |
|---|---|
| Article number | 7962019 |
| Pages (from-to) | 1308-1318 |
| Number of pages | 11 |
| Journal | IEEE Transactions on Dielectrics and Electrical Insulation |
| Volume | 24 |
| Issue number | 3 |
| DOIs | |
| State | Published - 2017 |
| Externally published | Yes |
Keywords
- HVDC cables
- electric field inversion
- nanodielectrics
- polymeric insulation
- recyclable insulation material
- space charge
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