Essays about: "High Voltage Direct Current"

Showing result 16 - 20 of 50 essays containing the words High Voltage Direct Current.

  1. 16. Operation and Control of HVDC Grids

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

    Author : Henrik Johansson; Lucas Tunelid; [2020]
    Keywords : Droop control; HIL; Modular multilevelconverter MMC ; Multi-terminal HVDC MTDC grid; Powersystems; Voltage source converter VSC modeling;

    Abstract : In order to meet the increasing demand ofenergy in today’s society while at the same time minimizing theenvironmental impact, renewable energy sources will be requiredto be integrated into the existing energy mix. Technologicaladvances in high voltage direct current (HVDC) grids playa crucial role in making this possible. READ MORE

  3. 17. Testing and analysis of an intelligent electronic device (IED) prototype for MTDC overhead line application

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

    Author : Ashen Gomes; [2020]
    Keywords : ;

    Abstract : A key problem faced with the implementation of a multi-terminal direct current (MTDC) grid is fault mitigation. One method extensively researched in mitigating a fault in MTDC is to use protection intelligent electronic devices (IEDs) and fast direct current circuit breakers (DCCBs). READ MORE

  4. 18. Dynamic Virtual Admittance Control Hardware-In-The-Loop Real-Time Simulation

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

    Author : Damien Gadou-Sanyal; [2020]
    Keywords : ;

    Abstract : To enhance the transient stability and the power oscillation damping of the powergrid, supplementary controllers can be applied to the embedded point-to-point High-Voltage Direct Current (HVDC) links. The work presented in this report aimed tovalidate the Dynamic Virtual Admittance Control (DVAC) designed in SuperGridInstitute, in Software- and Hardware-In-The-Loop (SIL and HIL) simulations. READ MORE

  5. 19. Filter Design for an HVDC protection IED

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

    Author : Evgeny Genov; [2020]
    Keywords : ;

    Abstract : A selective fault detection approach is necessary for successful implementation of multi-terminal high-voltage direct-current (HVDC) grids. Fault detection is per- formed by an intelligent electronic device (IED) that takes in voltage and current measurements, performs fault detection algorithms, and outputs, e.g. READ MORE

  6. 20. 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