Energy diverting converter topologies for HVDC transmission systems
| Autor: | Sarath B. Tennakoon, Carl David Barker, Jose Maneiro, Fainan Hassan |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Engineering
business.industry Electrical engineering Hardware_PERFORMANCEANDRELIABILITY Series and parallel circuits Fault (power engineering) Chopper Electric power system Hardware_INTEGRATEDCIRCUITS Electronic engineering HVDC converter station High-voltage direct current Voltage source business Electronic circuit |
| Zdroj: | 2013 15th European Conference on Power Electronics and Applications (EPE). |
| DOI: | 10.1109/epe.2013.6631734 |
| Popis: | Grid codes imposed by utilities regulate the operation of Voltage Source Converter - High Voltage Direct Current (VSC-HVDC) interconnected offshore wind farms. Fault ride-through (FRT) specifications require the adoption of specific measures to avoid over-voltages of the HVDC link during faults in order to protect the HVDC equipment. Implementing Energy Diverting Converters (EDC), for instance Dynamic Braking Resistor (DBR) circuits, at the DC link is an established method to comply with the grid codes, where the excess energy of the wind farm is diverted into the parallel circuit during the fault. In this paper an evaluation of three different state-of-the-art DBR circuits is performed in order to establish the advantages and disadvantages of each circuit. The evaluation has shown that although the three solutions meet the FRT requirements, the modular topologies generate reduced slope current and voltage step changes during their operation, while being larger in size and requiring a higher number of semiconductors as compared to the traditional DC chopper circuit employing hard switched series connected semiconductor arrangements. |
| Databáze: | OpenAIRE |
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