Essays about: "dc voltage stability"

Showing result 1 - 5 of 10 essays containing the words dc voltage stability.

  1. 1. Protection of HVDC Grids Against Blackouts (Simulation)

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Amal Al-Ammari; Dinah Atchan; [2021]
    Keywords : High Voltage Direct Current HVDC ; Voltage derivative dv=dt algorithm; Traveling wave algorithm; PSCAD simulation; Multi-terminal grid; Fault detection; Threshold value; Offshore HVDC; DC breaker; Voltage collapse;

    Abstract : In the search for green energy to combat climatechange, a shift from conventional energy sources such as coal,oil, and nuclear towards Renewable Energy Sources (RES) isneeded. This shift poses a threat to the stability of the powergrids as RES do not contribute with rotating mass in the system. READ MORE

  3. 2. Control Strategies for VSC-HVDC links in Weak AC Systems

    University essay from Uppsala universitet/Avdelningen för systemteknik

    Author : Erik Björklund; [2019]
    Keywords : HVDC; VSC; voltage source converter; control theory; weak ac systems;

    Abstract : In this master thesis control systems for a voltage-source converter HVDC connected to weak ac networks are investigated. HVDC stands for high voltage direct current and is a way to transfer power in the electrical power system. READ MORE

  4. 3. Dimensioning of a Residential Microgrid in Sweden

    University essay from KTH/Skolan för arkitektur och samhällsbyggnad (ABE)

    Author : Joakim Larsen; Tobias Tunestam; [2017]
    Keywords : ;

    Abstract : This project aims to evaluate through simulationsin Simulink whether an average power consuming, 4-personhousehold in Sweden, can be successfully supplied from amicrogrid system powered by solar panels. The goal is to achievea 48 V DC system and examine both its voltage stability and longterm power balance for stationary and transient conditions. READ MORE

  5. 4. Dimensioning of a Residential Microgrid in Sweden

    University essay from KTH/Industriell ekologi

    Author : Joakim Larsen; Tobias Tunestam; [2017]
    Keywords : ;

    Abstract : This project aims to evaluate through simulationsin Simulink whether an average power consuming, 4-person household in Sweden, can be successfully supplied from a microgrid system powered by solar panels. The goal is to achievea 48 V DC system and examine both its voltage stability and long term power balance for stationary and transient conditions. READ MORE

  6. 5. Simulations of vertical axis wind turbines with PMSG and diode rectification to a mutual DC-bus

    University essay from Uppsala universitet/Institutionen för teknikvetenskaper

    Author : Fjellstedt Christoffer; [2017]
    Keywords : vertical axis wind turbines; VAWT; mutual DC-bus; mutual topology; simulations; diode rectification;

    Abstract : Transient simulations were performed with MATLAB Simulink on a mutual wind park topology, where three vertical axis wind turbines equipped with permanent magnet synchronous generators were connected to a mutual DC-bus through passive diode rectification. The aim with the work was to show the effects of two different kinds of loads on the system in respect to generator torque, rotor speed, produced power by the generators and the power on the DC-bus. READ MORE