Development of test-bed and security devices for SCADA communication in electric power system

SCADA means the communication scheme or network for control systems, which stands for supervisory control and data acquisition. It is very important for SCADA to be operated on real time basis because it is directly related to the operation of physical systems of utility services such as electricity, water-supply, gas, etc. SCADA networks are originally started as local control systems and they have expanded to wide-area control systems as the communication technology evolves. On the process of expansion it extends its own private network and also common communication networks. Control systems have different characteristics compared to general communication networks. The real time property is a representative difference of control systems from communication networks, which should be strongly satisfied for normal operation. Besides that it is required to consider different protocols, data size, network topology etc. Considering these factors, the integration of different networks might cause various problems on the aspects of the required communication speed, device compatibility, cyber security vulnerabilities, etc. Therefore it is recommended to be simulated on a test-bed before the application to the real system. This paper is about the construction of test-bed for communication simulation in electric power system.