Sökning: "voltage disturbances"

Visar resultat 1 - 5 av 44 uppsatser innehållade orden voltage disturbances.

  1. 1. Harmonisk strömsimulering i inverterbaserade värmepumpar

    Uppsats för yrkesexamina på avancerad nivå, Umeå universitet/Institutionen för fysik

    Författare :Alexander Magnusson; [2023]
    Nyckelord :Current harmonics; inverter-driven compressor; black box simulation;

    Sammanfattning : An electrical distribution network supplies power to many households at a time. Each house has various types of electrical appliances which consume different levels of power depending on its function and the load it supplies. An ideal case would be when no appliances cause power disturbances, however, in reality, many electrical appliances (e.g. LÄS MER

  3. 2. Centralised MPC for Long-term Voltage Stability Control of Power System

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Johan Hallberg; [2023]
    Nyckelord :Voltage stability; Model predictive control; Tap-changing transformer; Capacitor bank; Spänningsstabilitet; Model prediktiv reglering; Lindningskopplare; Kondensatorbank;

    Sammanfattning : In a power system it is important to keep voltages at specific levels at network buses. Deviations from that can lead to reduced efficiency of transferred power or, in more severe cases, widespread power outages affecting large parts of society. There exists a variety of power system devices that have the ability to regulate the voltage levels. LÄS MER

  4. 3. Photovoltaic hosting capacity study for a residential area in Uppsala using a synthetic low voltage network

    Master-uppsats, Högskolan Dalarna/Institutionen för information och teknik

    Författare :Ikenna Mbah; [2023]
    Nyckelord :Hosting capacity; performance index; low voltage network;

    Sammanfattning : With the growing acceptance of photovoltaic (PV) systems globally including Sweden, an increasing number of PV systems has continually been installed all through Sweden. In this study, a selected residential area in Uppsala Sweden is considered as a possible site for PV system installation. LÄS MER

  5. 4. System impact of micro-production

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Industriell elektroteknik och automation

    Författare :Annie Haraldsson; [2023]
    Nyckelord :Fault ride through; LVRT; micro-production; solar production; photovoltaics; fault simulation; network modeling; power system disturbances; PMU-registrations; fault analysis; Technology and Engineering;

    Sammanfattning : The focus in this thesis has been active power from small scale solar production and what possible impacts an increased proportion of small scale production can have, in a larger context, during short circuit (SC) faults in the grid. The main research question prompting this work was whether active power from small scale solar pro- duction can help support voltages during SC faults, and meet LVRT-requirements in the RfG. LÄS MER

  7. 5. Evaluation of a Minute Synthesis Irradiation Model for the Frequency Containment Reserve : Disturbance down-regulation market

    Master-uppsats, Högskolan Dalarna/Institutionen för information och teknik

    Författare :Pablo Omar Luz Pedemonte; [2022]
    Nyckelord :Solar Energy; Photovoltaic; Irradiance variability; Synthetic solar irradiance; Ancillary services; Frequency regulation; Balancing market;

    Sammanfattning : With the increase in energy demand, and therefore, in energy generation, new high voltage direct current export links and overseas connections of large amounts of power are being introduced. These new links are subject to possible malfunction or failures, which may causea substantial frequency increase in the power system. LÄS MER