Abstract
High-voltage earthing system design is required to ensure safety compliance and adequate operation of the high-voltage infrastructures. The transmission lines form a solid part of the high-voltage infrastructure. The underground to overhead (UGOH) pole earth grid is one of the main challenges when it comes to transmission line earthing system design. To ensure safety compliance at low cost, counterpoise earthing is used at the UGOH pole for the underground lines. The counterpoise aids in lowering the UGOH pole earth grid resistance. This paper addresses the counterpoise analysis as currently being studied. Furthermore, it introduces the counterpoise mutual voltage between the faulted phase and the counterpoise and its impact at the UGOH pole earth potential rise. Case study is included.
Original language | English |
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Pages (from-to) | 233-241 |
Number of pages | 9 |
Journal | International Journal of Emerging Electric Power Systems |
Volume | 16 |
Issue number | 3 |
DOIs | |
Publication status | Published - 2015 |
Keywords
- earth grid
- electric lines
- electric power
- high voltages