Search for dissertations about: "voltage dips sags"

Found 5 swedish dissertations containing the words voltage dips sags.

  1. 1. Voltage sags characterisation and estimation

    University dissertation from Chalmers University of Technology

    Author : Roberto Chouhy Leborgne; Chalmers tekniska högskola.; Chalmers University of Technology.; [2005]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Elektroteknik; elektronik och fotonik; Electrical engineering; electronics and photonics; Power quality; voltage sags dips ; sag characterisation; sag estimation.;

    Abstract : .... READ MORE

  2. 2. Three-phase unbalance of voltage dips

    University dissertation from Chalmers University of Technology

    Author : Lidong Zhang; Chalmers tekniska högskola.; Chalmers University of Technology.; [1999]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; power systems; power quality; voltage dips sags ; symmetrical components; characterisation; field measurement; equipment immunity test;

    Abstract : .... READ MORE

  3. 3. Voltage Dip (Sag) Estimation in Power Systems based on Stochastic Assessment and Optimal Monitoring

    University dissertation from Chalmers University of Technology

    Author : Gabriel Olguin; Chalmers tekniska högskola.; Chalmers University of Technology.; [2005]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Elektroteknik; elektronik och fotonik; Electrical engineering; electronics and photonics; power systems; power quality; voltage dips; voltage sags; stochastic methods; short-circuit faults; symmetr?cal components; impedance matrix; integer optimisation;

    Abstract : This dissertation deals with the statistical characterization of the performance of power systems in terms of voltage dips (sags). It presents a method named voltage dip estimation that extends monitoring results to buses not being monitored. READ MORE

  4. 4. Voltage Sags: Single event characterisation, system performance and source location

    University dissertation from Chalmers University of Technology

    Author : Roberto Chouhy Leborgne; Chalmers tekniska högskola.; Chalmers University of Technology.; [2007]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Elkraftteknik; Electric power engineering; Power quality; voltage sags dips ; characterisation; indices; source location;

    Abstract : This thesis deals with one of the most important disturbances that affect the quality of the electrical supply. Voltage sags cause industrial processes malfunction, producing an enormous economical impact. A voltage sag is defined as a short duration reduction of the rms voltage. READ MORE

  5. 5. Power Electronics for Mitigation of Voltage Sags and Improved Control of AC Power Systems

    University dissertation from Institutionen för elkraftteknik

    Author : Marcio Magalhães de Oliveira; KTH.; [2000]
    Keywords : power electronics; power quality; voltage sags; voltage-source converters; Custom Power; FACTS; real-time simulations; solid-state devices;

    Abstract : The thesis deals with the application of compensators andswitches based on power electronics in AC transmission anddistribution systems. The objective of the studieddevices/equipment is the power flow and voltage control intransmission systems and the mitigation of voltage sags andmomentary interruptions to critical loads in distributionsystems. READ MORE