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.
Results
Showing 1 to 20 of 361 for “"Power Grid"”.
-
Power grid verification and optimization
… voltage drop that is caused by the impedance of power grid and devices' switchings. It is important to verify voltage values of nodes on power grids. To make the circuit work reliably, it is preferable to reduce the voltage drops. Nowadays, power grids are usually in large size, which results in …
-
Secure electric power grid operation
… secure and reliable operation of the electric power grid. The first part studies the distributed operation of the electric power grid using the power flow problem, which is vital to the operation of the grid. The power flow problem is a feasibility problem for finding an assignment of complex …
-
Secure multicast for power grid communications
Secure multicast for power grid systems faces a number of challenges like complex and error-prone group configuration, inefficient group key management, real-time challenges to existing security protocols and the balance among correctness, efficiency, feasibility and cost. We propose an …
-
Power grid simulation, evaluation, and test framework
The Virtual Power System Testbed (VPST) at the University of Illinois at Urbana-Champaign is part of the Trustworthy Cyber Infrastructure for the Power Grid (TCIP) and is maintained by members of the Information Trust Institute (ITI). VPST is designed to be integrated with other testbeds across the …
-
Power Grid Management in Response to Extreme Events
<p>Power system management in response to extreme events is one the most important operational aspects of power systems. In this thesis, a novel Event-driven Security Constrained Unit Commitment (E-SCUC) model and a statistical method, based on regression and data mining to estimate the system …
-
Data-Driven Approaches for Enhancing Power Grid Reliability
… key operational and reliability issues in power systems. The first part of this thesis addresses a prevalent problem in power distribution networks: the accurate identification of load phases. This study develops a data-driven model leveraging consumption measurements from smart meters and …
-
Intelligence by design in an entropic power grid
In this work, the term Entropic Grid is coined to describe a power grid with increased levels of uncertainty and dynamics. These new features will require the reconsideration of well-established paradigms in the way of planning and operating the grid and its associated markets. New tools and models …
-
Cooperative congestion control in power grid communication networks
Power Grid Digital Communication networks are needed for the delivery of Phasor Measurement Unit (PMU) sensor data with real time guarantees to the control centers for timely decisions. Present day network systems are unable to ensure the real-time needs of the PMU data as they are not designed to …
-
Distributed and decentralized control of the power grid
… network devices is transforming the way the power system is operated and studied. The ability to provide real and reactive power support can be achieved at the end-user level. In this dissertation, a framework and algorithm to coordinate this type of end-user control are presented. The …
-
Distributed Generation: Issues Concerning a Changing Power Grid Paradigm
… generation is becoming increasingly prevalent on power grids around the world. Conventional designs and grid operations are not always sufficient for handling the implementation of distributed generation units; the new generation may result in undesirable operating conditions, or system failure. …
-
Secure integration of electric vehicles with the power grid
… buildings, etc. are now being connected to the power grid. Malicious adversaries can use these as entry mechanisms to gain access to the grid with the intention of creating instability in the system. This work focuses on secure integration of DERs with the power grid. To this end, we propose …
-
Protecting the power grid: strategies against distributed controller compromise
The electric power grid is a complex, interconnected cyber-physical system comprised of collaborating elements for monitoring and control. Distributed controllers play a prominent role in deploying this cohesive execution and are ubiquitous in the grid. As global information is shared and acted …
-
Power Grid Partitioning and Monitoring Methods for Improving Resilience
… aims to develop decision-making tools that aid power grid operators in mitigating extreme events. Two distinct areas are focused on: a) improving grid performance after a severe disturbance, and b) enhancing grid monitoring to facilitate timely preventive actions. The first part of the …
-
Efficient algorithm for online N - 2 power grid contingency selection
… most massive blackouts and disturbances in the power grid. Such outages affect millions of people and cost the world economy billions of dollars annually. The impact of the N - k contingencies is anticipated to grow as the electrical power grid becomes increasingly more loaded. As the result …
-
Demonstration of HVAC chiller control for power grid frequency regulation
… frequency regulation is a necessary electric grid ancillary service that balances electric power system supply and demand on short time intervals of seconds to minutes. Commercial HVAC chillers may be well positioned to provide secondary frequency regulation as a demand side resource. …
-
Vector Based Control for Power Electronics Dominated AC Power Grid
The global trend towards electrifying the grid has positioned power electronics at the forefront of modern power systems. To control power electronics in grid-connected applications, Grid Forming (GFM) control has become a focal point of research. GFM control utilizes control laws derived from …
-
Understanding the Impact of Large-Scale Power Grid Architectures on Performance
<p>Grid balancing is a critical system requirement for the power grid in matching the supply to the demand. This balancing has historically been achieved by conventional power generators. However, the increasing level of renewable penetration has brought more variability and uncertainty to the grid …
-
Real-Time Detection of Demand Manipulation Attacks on a Power Grid
… across the globe has posed a threat to the power grid. When an attacker has access to multiple IoT devices within the same geographical location, they can possibly disrupt the power grid by regulating a botnet of high-wattage IoT devices. Based on the time and situation of the attack, an …
-
Comprehensive Electromagnetic Approach for Modeling of on-Chip Power Grid Switching
… discrete electro-magnetic model for the on-chip power grid directly from the physical geometry in chip design. More specifically, the primitive system of Maxwell's equations for the rotation of the electric and magnetic fields is discretized over a finite-difference grid that encompasses the …
Page 1 of 19