Arduino based protection of 400v/240v costly electrical equipment
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Date
2017
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Publisher
UMT.Lahore
Abstract
The main intention of this project is to design an Arduino based differential protection scheme that can be used for costly household electrical equipment’s. The system checks the operating parameters of the appliance like current and feedbacks it. The system is designed such that it is able to detect the difference in the current values of primary and secondary sides of the electrical equipment and isolate the appliance from the line in case of fault. Zone of differential protection is defined for the electrical equipment. If a fault occurs in the zone the differential protection, it operates the relays isolating the electrical equipment from the healthy system. This isolation process is to ensure that the electrical equipment is safe from any of these differences in current values that can make it to overheat and thus getting it damaged.
A Hall Effect current sensor is used in this project as the interfacing instrument between the electrical equipment and the Arduino microcontroller. A relay is used as tripping device to isolate the electrical equipment from the healthy system in case of fault. An LCD is used to show system current readings and indicate cases of differential fault. All these peripheral devices depend on the microcontroller to make them operate. Some of the tools used in this project include Arduino IDE programming software used to write the program for the microcontroller. Proteus simulation software is used to test whether the design works appropriately before its implementation on hardware.