Abstract
In this era of globalization, the needs of remote control systems is<br />increasing, where the system used is more sophisticated. Similarly, when a transformer<br />operator in electrical substations, which will control and monitor the load transformer 20<br />KV is still done by hand. This will result in less efficient and optimal performance of the<br />operator. We need a system that can control remotely. To overcome these problems, hence<br />designed "Host Mini SCADA systems for controlling the load on 20 KV transformer<br />substations parent. With this system an operator can perform control and monitoring of the<br />load transformer 20 KV, among others: Frequency, Current, Voltage, and Temperature. In<br />addition, this system also can detect if the transformer is faulty. Monitoring and controlling<br />performed remotely via SMS Gateway. This system consists of a PC (Personal Computer),<br />which functions as process control and remote control units. GSM Modem serves to make<br />the process of data transfer via SMS (Short Message Service). Software Visual Basic, a<br />programming language used to create a program / software on Host mini SCADA system.
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