PLC Based Overcurrent Protection of Three-phase Transmission Line

Ibraheem, Ahmed and Ibrahim, Mohammed and Shanshal, Abdullah (2020) PLC Based Overcurrent Protection of Three-phase Transmission Line. In: IMDC-SDSP 2020, 28-30 June 2020, Cyberspace.

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As the Transmission Line (TL) is an important part in the power system; this paper presents the design and practical implementation of overcurrent protection for three-phase TL system using Programmable Logic Control (PLC). The PLC then on-line monitring the vlaue of the load current in each phase and detect the overcurrent and simaltinouslly isolate the fault by sending an output signal for tripping the coil of the Circuit Breaker (CB). Display unit of the PLC is used for displaying the load current, in addition to alert maessage with the type of the occoured fault. The proposed contrroller program also cancel of the trip signal of the CB during a definite time of the inrush and stating load current. In addition, an automatic reclosing system for return the CB to the work when the overcurrent is released. PLC-based protection methods cost less, provides greater precision with a safe way of operation when compared with the other protection controllers system. Function Block Diagram (FBD) language is employed for implementing the proposed software controller. Simulation is made for the proposed controller via LOGO! Soft Comfort V7.0 software programs for virtual implantation of the program before downloading to the PLC.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: programmable logic control current transformer precision rectifier protection system transmission line circuit breaker and function block diagram
Subjects: Q Science > QA Mathematics > QA76 Computer software
Depositing User: EAI Editor III.
Date Deposited: 03 Mar 2021 08:55
Last Modified: 03 Mar 2021 08:55

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