Journal of Electrical & Electronic Systems

George Nyakoe

Publications

• Research Article
  Novel Modeling of a Fast DC Breaker for a VSC-HVDC Transmission System Protection
  Author(s): James Muriuki, George Nyakoe, Christopher Muriithi and Livingstone NgooJames Muriuki, George Nyakoe, Christopher Muriithi and Livingstone Ngoo
  
  The inability to quickly isolate the faulty sections of the direct current (DC) network damages the converters and the transmission system. Further delay in fault interruption can be escalated to the generation system thus shutting down the whole power system. Currently, Voltage Source Converter-High Voltage Direct Current (VSC-HVDC) systems provide the best mode of bulky power transmission over long distance. Though VSC-HVDC have their own internal protection, they still suffer from short-circuit faults especially on the DC side hence requiring a novel fast DC breaker. The novel design of the DC breaker in this paper utilizes a systematically calculated mutual inductance to divert the energy generated during fault to resistive elementson both sides of the DC breaker thus, preventing the transient voltage and backward current generated at the time of clearing the fault. The major chal.. Read More»
  DOI: 10.4172/2332-0796.1000241

  Abstract PDF