Sökning: "voltage sags dips"

Hittade 5 avhandlingar innehållade orden voltage sags dips.

  1. 1. Voltage sags characterisation and estimation

    Författare :Roberto Chouhy Leborgne; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; sag estimation.; Power quality; voltage sags dips ; sag characterisation;

    Sammanfattning : .... LÄS MER

  3. 2. Three-phase unbalance of voltage dips

    Författare :Lidong Zhang; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; equipment immunity test; power quality; characterisation; power systems; field measurement; voltage dips sags ; symmetrical components;

    Sammanfattning : .... LÄS MER

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

    Författare :Gabriel Olguin; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; power quality; symmetr?cal components; stochastic methods; impedance matrix; voltage dips; integer optimisation; power systems; short-circuit faults; voltage sags;

    Sammanfattning : 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. LÄS MER

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

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

    Sammanfattning : 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. LÄS MER

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

    Författare :Roberto Chouhy Leborgne; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; source location; characterisation; voltage sags dips ; Power quality; indices;

    Sammanfattning : 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. LÄS MER