Search for dissertations about: "wide area protection thesis"

Showing result 1 - 5 of 17 swedish dissertations containing the words wide area protection thesis.

  1. 1. Protection Strategies to Mitigate Major Power Systems Breakdowns

    Author : Mattias Jonsson; Chalmers University of Technology; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; system protection schemes; transient instability; distance protection; power swing detectors; voltage instability; generator coherency; wide area protection; out-of-step protection;

    Abstract : This thesis deals with new methods to improve the performance of power system protection in the case of voltage- and transient instability. These methods are designed primarily to mitigate power system breakdown. Relay algorithms are proposed where conventional distance protection is combined with additional relay criteria. READ MORE

  2. 2. Methods for Synchrophasor-Based Power SystemInstability Detection and HVDC Control

    Author : Rujiroj Leelaruji; Luigi Vanfretti; Jean Mahseredjian; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; Wide-Area Monitoring Protection and Control Systems; Synchrophasor applications; Wide-Area Voltage Instability Detection; Wide-Area EarlyWarning Systems; Automatic Voltage Stabilizer;

    Abstract : The recent availability Phasor Measurement Unit (PMU) functionalities in relay technology has opened up new opportunities for power system protection, allowing this microprocessor-based technology to be used beyond traditional protection purposes. This technology now also considers the computation and communication mechanisms that allow the transmission of synchronized phasor measurements. READ MORE

  3. 3. Wide area monitoring and control systems - application communication requirements and simulation

    Author : Moustafa Chenine; KTH; []
    Keywords : Wide Area Monitoring and Control systems; Phasor Measurements Units; Power System Communication; SCADA systems;

    Abstract : Today’s electrical transmission & distribution systems, are facing a number of challenges related to changing environmental, technical and business factors. Among these factors are, increased environmental restrictions leading to higher share of production from renewable and uncontrollable sources as well as local environmental concerns regarding construction of new transmission and distribution lines. READ MORE

  4. 4. Design, analysis and simultion for optical access and wide-area networks

    Author : Jiajia Chen; Lena Wosinska; Hussein Mouftah; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fiber access networks; passive optical network; dynamic bandwidth allocation; reliability; switched optical networks; switching node; optical circuit switching; optical packet switching; routing and wavelength assignment; security; Telecommunication; Telekommunikation;

    Abstract : Due to the tremendous growth of traffic volume caused by both exponential increase of number of Internet users and continual emergence of new bandwidth demanding applications, high capacity networks are required in order to satisfactorily handle the extremely large amount of traffic. Hence, optical fiber communication is the key technology for the network infrastructure. READ MORE

  5. 5. Requirements for the Induction of Adaptive Immune Responses to Rotavirus

    Author : Joy Nakawesi; Virusrekognition; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Rotavirus; classical dendritic cells; Lymphoid organ hypertrophy; B cells; IgA; Retinoic acid; CD8 T cells; TLR3 and Poly I:C ;

    Abstract : Rotavirus (RV) infections remain the leading cause of world-wide diarrhea-associated morbidity and mortality among children 200,000 deaths annually mostly in the low-income countries of Africa and Asia. Efficient clearance of the primary RV infection and protection from future re-infections is mediated by adaptive immune responses. READ MORE