Improved Protection for Wokoma 11kV Distribution Feeder

• Author(s): Otonye Ene Ojuka ; Biobele Alexander Wokoma ; Enyinda Igochukwu Wodi ; Wilson Benedict
• Paper ID: 1703298
• Page: 382-385
• Published Date: 25-03-2022
• Published In: Iconic Research And Engineering Journals
• Publisher: IRE Journals
• e-ISSN: 2456-8880
• Volume/Issue: Volume 5 Issue 9 March-2022

Abstract

This paper deals with coordination scheme for transmission lines protection against fault. Load flow is basic requirement for conducting power system analysis of any system. The load flow gives us information about voltages, real and reactive power generated and absorbed and line losses across the entire system. Short Circuit Analysis provides the information required to determine whether the interrupting capacities of the power system components are adequate enough to protect your power system. The line data from the respective feeders were taken and used in the load Flow analysis also A well simulated coordination utilizes circuit breakers at various load points as required by the network in question, ensuring proper tripping of the appropriate breaker under fault conditions. The maximum and minimum fault current are all three-phase symmetrical (30 cycle network) values and the pre-fault voltage equaled 100 percent of the nominal voltage. Furthermore, A current time interval (CTI) of 3.5 seconds was used between the relays and was later increase to 4 seconds base on time of operation between the relays to ensure proper coordination between the relay elements, total apparent power of 6513MVar and a mismatch of 0.103Mvar was obtained. it was noticed that the transformers and buses were overloaded, but with an upgrade of transformer to 2×15MVA and implementation of 90×300kar capacitor bank to bus 4 major improvement was actualized. The model was created using ETAP software.

Keywords

Feeder, Protection, Line, Relay, Coordination, Circuit, Breaker, Overload, ETAP, Software, Capacitor, Banks.

Citations

IRE Journals:
Otonye Ene Ojuka , Biobele Alexander Wokoma , Enyinda Igochukwu Wodi , Wilson Benedict "Improved Protection for Wokoma 11kV Distribution Feeder" Iconic Research And Engineering Journals Volume 5 Issue 9 2022 Page 382-385

IEEE:
Otonye Ene Ojuka , Biobele Alexander Wokoma , Enyinda Igochukwu Wodi , Wilson Benedict "Improved Protection for Wokoma 11kV Distribution Feeder" Iconic Research And Engineering Journals, 5(9)