Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 19 of 19 for “"SCADA Systems"”.
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The role of SCADA in developing a lean enterprise for municipal wastewater operations
… for supervisory control and data acquisition (SCADA). The process of providing SCADA systems to municipal clients, from conception to implementation, is typically a cumbersome process involving a wide variety of stakeholders. Municipalities have historically been slow to change, often being …
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Towards Accurate and Reliable Industrial Intrusion Detection Systems Using Shadow Replicas
Supervisory Control and Data Acquisition (SCADA) systems manage the operations of a plethora of safety-critical industrial control systems. Due to their sensitive nature, SCADA systems have been the target of adversaries employing a wide range of attacks. This thesis proposes an approach to protect …
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Designing Security Defenses for Cyber-Physical Systems
Legacy cyber-physical systems (CPSs) were designed without considering cybersecurity as a primary design tenet especially when considering their evolving operating environment. There are many examples of legacy systems including automotive control, navigation, transportation, and industrial control …
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The Utility of Cyberattack as a Tool For Military Operations: The Case of China Vs. the United States
… within the government and military, and the SCADA systems underlying critical infrastructure systems, all contribute to the dilemma. A foreign government or other power could use cyberattack against the United States as a force multiplier in military operations or as a strategic weapon. The …
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Detection and prevention of intrusions in power system cyber-physical infrastructure
Cyber-attacks on SCADA (supervisory control and data acquisition) systems used by industrial control systems (ICS), e.g., power grids, can cause severe damage. In December 2015, remote intruders penetrated a Ukrainian power grid and caused a blackout that affected 225,000 residents. Mitigating …
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Controlled virtual time advancement in conjoined emulation and network simulation
… evaluation of applications but such hybrid systems are generally not scalable. Virtual time systems attempt to provide a feasible solution by defining and controlling a virtual clock to alter an experiment’s notion of time. Previous works have motivated and explored the benefits of virtual …
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Design of a state-based nonlinear controller
… PI controllers are also standard in various SCADA systems. Since control normally takes place around an operating point, a linearised model is obtained. A controller designed for a particular operating point, may not be suitable for other operating points. Since a multitude of variables are …
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Optimal placement of phasor measurement units using the Advanced Matrix Manipulation algorithm
… of Phasor Measurement Units in electrical power systems for State Estimation to facilitate improved monitoring and control of the system parameters. The research work done for this thesis begins with review of Supervisory Control and Data Acquisition systems (SCADA). SCADA-based systems are …
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Implementation of a Testbed with SDN-enabled Communication Networks to Experiment on Physical Function Virtualization that Disrupts Reconnaissance of Cyber-Physical Infrastructures
Industrial control systems (ICSs) have been extensively deployed in the real world. Large ICSs, such as smart power grids, consist of the supervisory control and data acquisition (SCADA) systems and the programmable logic controllers (PLCs). PLCs and SCADA exchange control signals and measurement …
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Monitoring and analysis of data captured from industrial equipment for diagnostic purposes
… such diagnostics typically form part of a SCADA suite which takes a site-wide approach to displaying information. While correct use of these suites has shown to bring benefits to both customer and supplier, it can be argued that they are not suitable for customers with small scale …
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Wind turbine condition monitoring based on SCADA data
… the Supervisory Control and Data Acquisition (SCADA) data based analysis approach is considerable and could add real value to the condition monitoring with little or no cost to the wind farm operator. This thesis focuses on wind turbine condition monitoring that utilises exclusively data from …
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Threat Assessment for Multistage Cyber Attacks in Smart Grid Communication Networks
… and supervisory control and data acquisition (SCADA) systems. The increasing adoption of new ICT assets in smart grids is making smart grids vulnerable to cyber threats, as well as raising numerous concerns about the adequacy of current security approaches. As a single act of penetration is …
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Prognostic Algorithms for Condition Monitoring and Remaining Useful Life Estimation
… monitoring solution for thermal abatement systems is also presented. As part of this work, a multiple model particle �ltering algorithm for prog- nostics is developed and tested. The capabilities of the proposed prognostic solution for addressing the uncertainty challenges in predicting the …
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Cybersecurity for urban critical infrastructure
… electric grid, water networks, transportation systems and public health and safety services are constantly being targeted by cyberattacks. Urban critical infrastructure has been increasingly connected to the internet for the purpose of operational convenience and efficiency as part of the …
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Achieving Security and Reliability of Industrial Control Systems Using Data-Driven Models Informed by Physical Domain Knowledge
Industrial control systems (ICS) are responsible for controlling and monitoring critical infrastructure such as power grids, which are critical for national security and public health. Modern ICS are comprised of interconnected information technology and operational technology systems that monitor …
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Enhancing Grid Reliability With Phasor Measurement Units
… further increased the uncertainties in power systems. All these factors challenge the way the power grids are operated, and thus ask for new solutions to maintain stable and reliable grids. To meet the emerging requirements, advanced metering infrastructures are being integrated into power …
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Intrusion Detection and Recovery of a Cyber-Power System
… and Communications Technology (ICT) in power systems has revolutionized the monitoring, operation, and control mechanisms through advanced control and communication functions. However, this integration significantly elevates the vulnerability of modern power systems to cyber intrusions, posing …
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Gaussian process models for SCADA data based wind turbine performance/condition monitoring
… are costly affairs that comprise several complex systems connected altogether (e.g., hub, drive shaft, gearbox, generator, yaw system, electric drive and so on).;The unexpected failure of these components can cause significant machine unavailability and/or damage to other components. This …
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Implementation of Secure DNP3 Architecture of SCADA System for Smart Grids
… by a Supervisory Control and Data Acquisition (SCADA) system which communicates on DNP3 protocol on Internet/IP which has many security vulnerabilities. This research will focus on Distributed Network Protocol (DNP3) communication which is used in the smart grid to communicate between the …