Electrical distribution networks

Matthew Ingham (Inventor), D. Trainer (Inventor), S. Galloway (Inventor), A. Dysko (Inventor), Rolls-Royce PLC (Inventor), Rolls-Royce PLC (Patent applicant) (Inventor)

Research output: Patent


Safe operation of electrical power distribution systems necessitates consideration of the fault level in terms of the potential for electrical current flow upon an earth or other fault within the electrical power distribution system. Previously, electrical power systems have been analysed to provide theoretical fault levels values for different zones of an electrical power distribution system based upon a worse case scenario. However, existing electrical loads will in practice provide a more adaptable and higher fault level. By monitoring and identifying an I-V characteristic upon switching electrical load in practical operation an actual default level at particular nodes in a power distribution system is determinable . In such circumstances decisions with regard to the connectablilty of further electrical generators or loads at particular parts and zones of an electrical power distribution system can be quantified by reference to the actual fault level rather than the theoretical worse case scenario level and therefore avoid unnecessary upgrading of transmission equipment or denying access to the electrical power system.
Original languageEnglish
Patent numberWO/2008/023141 A1
IPCH02J 3/14
Publication statusPublished - 28 Feb 2008


  • electrical power distribution systems
  • electrical current flow
  • electrical power systems
  • fault levels values
  • electrical load
  • electrical generators


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