Manage reverse power flow and fault current level in lv network with high penetration of small scale solar and wind power generation

K N Bangash, M E A Farrag, A H Osman

Research output: Chapter in Book/Report/Conference proceedingConference contribution

13 Citations (Scopus)
191 Downloads (Pure)


High penetration level of rooftop small-scale
renewable energy generation (REG) such as solar and wind
power into the existing low voltage (LV) network would cause the
flow of power in reverse direction. This would also vary the level
of short-circuit current required for relays to operate. Relay
settings would be required to properly detect the unpredictable
fault current and isolate the faulty section. This paper
investigates the impact of residential distributed generation (DG)
penetration level on the typical UK low voltage network
protection system. Studies were commenced to properly charge
and discharge the home connected energy storage battery (ESB).
ESB is used as a remedial measure to confine the flow of reverse
power due to rooftop DGs. Penetration level DGs are modeled
based on proper ESB charging and discharging states in daily
load cycle. Short circuit analysis is simulated on
Matlab/Simulink. The power flow from the transformer
secondary is managed to avoid malfunctioning of relays
according to daily load cycle. Short circuit analysis results are
compared with the UK passive network to investigate the impact
of the DG on the short circuit currents at distribution
Original languageEnglish
Title of host publication2018 53rd International Universities Power Engineering Conference (UPEC)
Number of pages6
ISBN (Electronic)9781538629109
ISBN (Print)9781538629109
Publication statusPublished - 13 Dec 2018


  • batteries
  • fault currents
  • circuit faults
  • relays
  • load flow
  • fuses
  • production
  • UK distribution network
  • short circuit analysis
  • rooftop DG penetration
  • reverse power flow
  • energy storage batteries

ASJC Scopus subject areas

  • Safety, Risk, Reliability and Quality
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering
  • Computer Networks and Communications
  • Renewable Energy, Sustainability and the Environment


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