Critical infrastructures like Nuclear Power Plants (NPP), railroad networks, and water distribution / treatment systems are fundamentally important to human life. Failure of such structures endangers human lives, environment, and economy in world-wide scale. Supervisory Control And Data Acquisition (SCADA) system have been installed to operate those infrastructures efficiently and safely, but s...

This paper presents practical laboratories for teaching purpose in Supervisory Control and Data Acquisition (SCADA) systems. A SCADA system is described in terms of architecture, process interfaces, functionality, and application development facilities. These concepts are implemented on an integrated automation system, particularly for digital control of electric drives with a distributed perip...

A fundamental requirement for the ability to monitor a SCADA system is a measure for ensuring that the monitoring process has an accurate picture of the current states of all sensors and actuators in the system. A misrepresentation of the state can be perpetrated either by sending misleading information (for example, by impersonating a sensor) or by preventing sensor measurements from reaching ...

Modern Supervisory Control and Data Acquisition (SCADA) systems which are used by the electric utility industry to monitor and control electric power generation, transmission and distribution, are recognized today as critical components of the electric power delivery infrastructure. SCADA systems are large, complex and incorporate increasingly large numbers of widely distributed components. Cyb...

Despite growing awareness of security issues especially in SCADA networks, there exist little or scarce information about SCADA vulnerabilities and attacks. Where security has been a consideration, there has been no clear methodology to assess the security impacts brought about by attacks. Worst, there have been no or very little security tools that have been released publicly. This research ai...

Supervisory Control And Data Acquisition (SCADA) systems are real-time process control systems that are widely deployed throughout critical infrastructure sectors including power, gas, oil, and water. However, SCADA networks generally have little protection from the rising danger of cyber attack. A retrofit solution to protect existing SCADA communications links must assure the integrity of com...

This paper presents observations and analysis experienced by a utility end user. As SCADA systems become a crucial part of daily operations for utilities, finding low-cost, reliable communications for substations in remote geographic locations often presents a challenge. Current SCADA communications methods, including framerelay, T1, and fiber are often unreasonably expensive, in terms of insta...

Distributed control systems (DCS) and supervisory control and data acquisition (SCADA) systems were developed to reduce labour costs, and to allow system-wide monitoring and remote control from a central location. Control systems are widely used in critical infrastructures such as electric grid, natural gas, water and wastewater industries. While control systems can be vulnerable to a variety o...

SCADA is an essential system to control critical facilities in big cities. SCADA is utilized in several sectors such as water resource management, power plants, electricity distribution centers, traffic control centers, and gas deputy. The failure of SCADA results in crisis. Hence, the design of SCADA system in order to serve a high reliability considering limited budget and other constraints i...