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 22 for “"adaptive protection"”.
-
Adaptive protection solutions for future active power distribution networks
… in this dissertation is to investigate the protection challenges that this evolution will introduce to the functions of protecting distribution networks, to develop new solutions and implement and demonstrate them in the laboratory. To analyse the potential problems that may be introduced to …
-
Analysis of a Major Electric Grid – Stability and Adaptive Protection
… lines. Out-of-step relays are used for generator protection to detect loss of synchronism conditions that result from disturbances on the electric grid. Also, when a disturbance occurs and generators may tend to lose synchronism with each other, it is beneficial to separate the overall system into …
-
Metering and adaptive protection for a microgrid with distributed generation
… main objective of this project is to develop an adaptive relaying system that will protect the microgrid both in connected and isolated modes. Therefore the settings for the different relays will be observed for the two modes of operation. This will determine whether they are correctly …
-
The application of phasor measurements for adaptive protection and control
This thesis describes an adaptive protection scheme that performs the collection of the voltage and current phasors during post-fault period, tracking the power swing phenomena, identifying the onset of instability, and then issuing a stabilizing command. In this work, the protection system is to …
-
A study of adaptive protection methods for future electricity distribution systems
… that the performance of power system protection is not degraded. This thesis documents research that has considered the myriad of issues arising throughout distribution networks. The concept of adaptive protection has been explored as a solution to many of these issues as a means of …
-
Modern Adaptive Protection and Control Techniques for Enhancing Distribution Grid Resiliency
… power flow has challenged the conventional protection schemes in place. The most notable effects on the protection schemes can be seen in the field of islanding or Loss of Mains(LOM) detection and general fault identification and isolation. Adaptive protection schemes are needed to properly …
-
Implementation of Adaptive Protection Scheme for Microgrid using IEC 61850 Communication Protocol
… balance, reactive power control, stability etc., protection is a major challenge for the microgrid. In view of the issues related to microgrid protection, this thesis discusses the inadequacy of the conventional protection scheme, fault behavior of inverter interfaced DERs, and impact on the …
-
Methodology for a Security-Dependability Adaptive Protection Scheme based on Data Mining
… offer testimonies of the crucial role played by protection relays in a reliable power system. It is argued that embracing the paradigm shift of adaptive protection is a fundamental step towards a reliable power grid. The adaptive philosophy of protection systems acknowledges that relays may …
-
Development of an adaptive protection scheme for compensated transmission network with high level penetration of renewable energy sources
Submitted in fulfilment of the requirements of the degree of Doctor of Engineering in Electrical Engineering, Durban University of Technology, Durban, South Africa, 2024.
-
An improved agent-based adaptive protection model for distributed denial of service flooding attack and flash crowd flooding traffic
… To address this issue, this thesis proposes an adaptive agent-based protection model known as Adaptive Protection of Flooding Attacks (APFA) specific for DDoS attacks and FC flooding traffics. The APFA model is aimed to protect the Network Application Layer (NAL) against such attacks. The APFA …
-
Hidden Failures in Shipboard Electrical Integrated Propulsion Plants
… hardware or software. It is shown that this protection could be further improved through the use of a simple adaptive protection scheme that disarms unneeded protective elements in certain configurations.
-
Proposta e avaliação de um método adaptativo de corte de carga
This work deals with the evaluation of adaptive methods of load shedding. It is understood as adaptive methods, load shedding schemes that are able, through monitoring the state of the network, to estimate the unbalance between the load and the generation of the system and to adapt the amount of …
-
Implementation of the Security-Dependability Adaptive Voting Scheme
… societal and economical impact. Power system protection relays make up a piece of these limits and can be important factors in preventing or causing a system blackout. The purpose of this thesis is to present a working implementation of an adaptive protection scheme known as the adaptive …
-
Aplicação de sincrofasores na proteção de redes de distribuição com geração distribuída
… This study aims to observe the traditional protection philosophy for radial distribution systems, verifying the main equipment that compose it, analyzing the coordination between them for the radial case and considering the effect of DG on this philosophy. The present work also aims to study …
-
ADAPTIVE GROUND FAULT PROTECTION FOR A DISTRBUTION NETWORK
Due to advances in the field of digital protection, more and more utilities are using microprocessor based relays for protection of power system equipment However, the protection philosophy remains the same. The present practice of protection is to analyze all the abnormal operating conditions in …
-
On the protection of compact DC power systems with high-power energy storage
… reducing the effectiveness of associated protection devices (protection blinding).The impact of several key DC power system design and operation parameters on the ESS fault response is quantified and a new critical fault impedance term, beyond which protection blinding can be expected to …
-
Assessment Of Overcurrent Relay Coordination In A Microgrid With High PV Penetration Deployment
… or islanded) would jeopardize the current-based protection schemes. In view of the above issues related to microgrid protection, this thesis discusses the inadequacy of the conventional protection schemes, fault behavior of inverter interfaced distributed sources and impact on the coordination of …
-
A novel zonal adaptive DG anti-islanding protection scheme to enhance future system stability using real-time inertia estimates
… of adopting present-day frequency-based protection settings in conjunction with aforementioned techniques in future power networks has not been fully investigated, where frequency stability margins, necessitating active regulation, could dynamically vary. As such, the work reported in …
-
The Advancement of Adaptive Relaying in Power Systems Protection
… self-harm. This requires damage prevention from protection schemes. Until recently, there was a safe gap between capacity to deliver power and the demand. Therefore, these protection schemes focused on dependability allowing the disconnection of lines, transformers, or other devices with the …
-
Practical Implementation of a Security-Dependability Adaptive Voting Scheme Using Decision Trees
… between security and dependability of this protection. Adaptive relaying schemes that can change or modify their operation based on prevailing system conditions are an example of a protective scheme increasing reliability of the power system. The purpose of this thesis is to validate and …
Page 1 of 2