2011 | OriginalPaper | Buchkapitel
GSM Based Power Management
verfasst von : Kaukab Naz, Shahida Khatoon, Ibraheem
Erschienen in: Contemporary Computing
Verlag: Springer Berlin Heidelberg
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At present, secondary distribution network is controlled manually in most of the places. The limitation of the system is that there is no feedback on the operation. Maintenance staff has to physically check the correct operation. The system has an isolator / changeover switch at the incomer end and a contactor for switching the power. There are no protections against overloads and short circuit faults. There is no metering facility in the system and the revenue calculations are done manually. In this paper a control system is designed for remote operation of LV feeders for continuous monitoring and load shedding with GSM interface with central control station SCADA with two way communication using SMS messages. In this paper a prototype model is developed by integrating SCADA control with GSM technology using the logic Twidosoft v.3 for continuous monitoring and obtaining parameters from the field and remote control of LV feeders. The proposed scheme is intended to give better and more control options, performance, safety to equipment & people and help in reducing downtime by way of suggesting preventive maintenance automatically by the system. Offered system includes the metering functions, so that the meter readings can be downloaded from remote Central Control Station using the same GSM Modem and GSM Network. Automatic re-switching by remote control to enable supplies to be restored quickly to all consumers is a current feature of this scheme. In this project various hardware equipments are configured using IFIX software. Many screens are created for sending and receiving reports. A program is written in MATLAB Editor for determining the channel capacity of GSM network and then the optimum message transfer rate is calculated for this type of application. The scheme has been successfully tested and the analytical discussions and results are presented for the same.