Substations have critical roles in electric power networks since they are subsidiary stations of electricity generation, transmission and distribution systems where voltage is transformed from high to low or from low to high voltage using power transformers. This importance for substations imposes the necessity for a suitable automation system by performing continuous automated monitoring in order to grant proper control and consequently proper protection of the substation. In addition to monitoring, and controlling the substations devices, a communication network is also a major element in the automation system. And since some substations are located in rural areas, the communication with their automation systems should be over reliable wireless communication medium like the GSM Network.
The most important parameters to be monitored in a substation are the voltage supplied by the substation, the current withdrawn from it and the frequency of the power lines. In addition to these electrical parameters, another parameter can be monitored to maintain the proper performance of a substation. This parameter is the temperature.
In this project, the necessary hardware for monitoring the important parameters in a typical Low Voltage substation have been discussed including the necessary sensors, electronic circuits, electronic modules, and control boards, in addition to the GSM communication modules. The proposed design continuously monitors the above parameters and sends short messages in case of critical circumstances like overcurrent or high temperature. The functionality of the controller relies on some specific assembly instructions. Embedded C++ code to be able to download it to the Arduino Board language has been employed for designing the controller.
Finally, The proposed design was designed, implemented, and tested. Down to the new expected results through pilot experiments based on senior project design ideas.
Supervisor by: Dr. Yousef Ibrahim Daradkeh