An Industrial firewall is a system used to supervise and regulate traffic to and from a network for the purpose of securing appliances on a network. It analyzes the data passing through it to an already defined surveillance criteria or protocols, discarding data that does not meet the protocol’s requirements. In effect, it is a filter preventing undesirable network traffic and selectively limiting the type of transmission that occurs between a secured transmission line. In this research paper a SCADA based Firewall is implemented for protection of the data transmission to a PLC, against external hacking devices. This firewall is virtually exposed to several external hackers and the degree of vulnerability is carefully studied, in order to develop an ideal Firewall.
Fluid power transmission has caught the eye in recent times, in the field of wind turbine technology. The turbine rotor blades tend to yield an aerodynamic torque, which is transformed into a high pressure fluid through a pump. This fluid is utilized to generate speed and torque yet again at the distant end of the circuit. The paramount objective of this research is to obtain a virtually operating dynamic model of a hydraulic powered transmission in a wind turbine, in order to understand its dynamic behaviour and also, to obtain knowledge about the influence of the prime parameters on the wind turbine. To accomplish this task, a virtual hydraulic powered wind turbine system is designed with a power rating of 23KW. The process is virtually simulated on the AUTOMATION STUDIO software (version 6.2). The intelligent control strategy used in the present work is based on fuzzy logic that uses human intelligence for a particular desired outcome. The effectiveness of the recommended controller is contrasted with that of a conventional PID controller in the following paper.
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