| Abstract: |
| Heavy fault currents flow in the event of fault at the loads connected in distribution system. To protect these loads,
circuit breakers and relays are required at appropriate places with proper coordination between them. This research
paper focuses on finding optimum relay setting required for minimum time to interrupt power supply to avoid
miscoordination in operation of relays and also investigates effect on time multiplier settings (TMS) of directional
overcurrent relays in a system with combined overhead lines-underground cables. Linear programming problem
(LPP) approach is used for optimization. It is interesting to know the quantitative variations in TMS as the underground
cables have different characteristics than overhead lines. |
| Key words: Dual simplex method, Linear programming, Optimization, Overcurrent relay coordination, Powerdistribution system |
| DOI：10.1186/s41601-019-0124-6 |
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| Fund: |
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