Essays about: "active power response time"

Showing result 1 - 5 of 19 essays containing the words active power response time.

  1. 1. Grid Scale Storage Placement In Power Systems

    University essay from Uppsala universitet/Institutionen för elektroteknik

    Author : Andreas Bodegård; [2022]
    Keywords : FFR; frequency regulation; PowerFactory; DIgSILENT; grid scale storage; inertia; power system; rotor-angle stability; frequency stability; modal analysis; kundur two area model; nordic32;

    Abstract : The increasing amount of renewable energy sources is applying more and more pressure on today’s power system. Additionally, plannable sources of energy, which are mostly non-renewable, are being decommissioned at a high rate to combat climate change. READ MORE

  3. 2. Development of a Real-Time Simulation Model in RSCAD of a STATCOM and its Control System

    University essay from Uppsala universitet/Elektricitetslära

    Author : Jessica Redander; Johanna Lenárd; [2021]
    Keywords : STATCOM; FACTS; Grid Forming; Control System; Modular Multilevel Converter; Voltage Source Converter; Power System; RSCAD; RTDS;

    Abstract : The development of interconnected power systems together with an increasing number of renewable non-synchronous power sources, create major challenges for the power system to meet the voltage stability and power quality requirements. One way to increase the voltage stability in a sustainable way is to locally implement a STATCOM. READ MORE

  4. 3. Modelling and Dynamic Performance of Hydropower in Frequency Regulation : Modelling of Double Regulated Hydropower Turbines

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

    Author : Kristinn Arnar Ormsson; [2021]
    Keywords : Frequency Containment Reserves FCR ; Hydropower; Double regulated DR turbine; Non-linear modelling; Simulink.; Frekvensreserv FCR ; vattenkraft; dubbelreglerad DR turbin; icke-linjär modellering; Simulink.;

    Abstract : The frequency of the Nordic power system has been increasingly deviating outside the normal frequency band (50 ± 0.1 Hz) in the past two decades. In an effort to counteract this, the Nordic Transmission System Operators (TSOs) have proposed new and stricter requirements on the units participating in Frequency Containment Reserve (FCR) market. READ MORE

  5. 4. Minimizing Transformer No-Load Losses at Hydropower Plants : A Study of Effects from Transformer Switch-Off During Stand-by Operation

    University essay from Uppsala universitet/Institutionen för elektroteknik

    Author : Elin Luedtke; [2021]
    Keywords : step-up transformer; transformer switch-off; stand-by operation; idle operation; transformer winding; inrush current; fatigue stress; fatigue failure; S-N curve; transformer thermal cycling; thermal time constant; saving potential in hydropower; hydropower plant;

    Abstract : Hydropower is the most important power balancing resource in the Swedish electrical power system, regulating the power supply to match the load. Consequently, several hydropower plants have periods of stand-by operation where the power production is absent but where several devices within a plant are still active. READ MORE

  6. 5. Impact of different light sources on the responses of moth

    University essay from Högskolan i Halmstad

    Author : Yanhe Zhou; [2021]
    Keywords : Artificial light at night ALAN ; Greater wax moth; Light Attraction; light emitting diodes; LED; Galleria mellonella;

    Abstract : In recent decades, the negative effects of artificial light at night on natural ecosystems have attracted the attention of ecologists. Studies have shown that artificial light at night leads to a considerable reduction in insects and has a worrying impact on terrestrial ecosystems, including nocturnal insects (e.g. Lepidoptera) such as moths. READ MORE