Essays about: "Impedance estimation"

Showing result 1 - 5 of 15 essays containing the words Impedance estimation.

1. 1. Line Distance Protection in Power Grids with Variable Renewable Energy Sources : An Investigation on Time Domain Distance Protection via Parameter Estimation

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

   Author : Ludvig Ringaby; [2023]
   Keywords : Distance protection; Power system protection; Time domain distance protection; Differential Equation Algorithm; Variable renewable energy; IBR; Distansskydd; Skyddssystem i elkraftsystem; Tidsdomän distansskydd; Differentialekvationsalgoritm; Variabel förnybar energi;

   Abstract : Variable renewable energy sources typically connect to the power grid through power electronic interfaces. Increased use of such sources can cause issues for conventional distance protection. READ MORE

3. 2. Battery Capacity Prediction Using Deep Learning : Estimating battery capacity using cycling data and deep learning methods

   University essay from Mälardalens universitet/Framtidens energi

   Author : Josefin Rojas Vazquez; [2023]
   Keywords : Battery management system; Lithium-ion batteries; battery degradation mechanisms; battery cycle life; Electrical impedance spectroscopy; Capacity estimation; Incremental capacity analysis; Deep learning models; Equivalent circuit model; Long short-term memory; Feedforward neural network; Conventional neural network; multi-channel data; Incremental capacity analysis;

   Abstract : The growing urgency of climate change has led to growth in the electrification technology field, where batteries have emerged as an essential role in the renewable energy transition, supporting the implementation of environmentally friendly technologies such as smart grids, energy storage systems, and electric vehicles. Battery cell degradation is a common occurrence indicating battery usage. READ MORE

4. 3. Damping of sub-synchronous control interactions with a STATCOM : Wind farms & series compensated power lines

   University essay from Uppsala universitet/Institutionen för elektroteknik

   Author : Leonardo Alvarez Urrutia; [2022]
   Keywords : Sub-Synchronous Control Interactions; Power Systems; STATCOM; Network Stability; Doubly-Fed Induction Generator; Impedance-Based Stability Analysis;

   Abstract : The power converter is one of the key components in power system applications such as high voltage direct current (HVDC) systems and the grid connection of intermittent sources such as wind and solar power. However, the increased penetration of converter-based generation introduces challenges, such as sub-synchronous interaction between the converter control system and the grid. READ MORE

5. 4. Evaluation of DC Fault Current in Grid Connected Converters in HVDC Stations

   University essay from Uppsala universitet/Institutionen för elektroteknik

   Author : Soham SinhaRoy; [2022]
   Keywords : Symmetrical monopole; HVDC LCC and VSC; CTL; MMC; Converter reactor; DC smoothing reactor; DC pole-to-pole fault; Peak factor; SCC; SCR; PSCAD EMTDC;

   Abstract : The main circuit equipment in an HVDC station must be rated for continuous operation as well as for stresses during ground faults and other short circuits. The component impedances are thus selected for proper operation during both continuous operation and short circuit events. READ MORE

6. 5. Investigation of Battery Parameters for Li-ion Battery State of Health Estimation

   University essay from KTH/Kemiteknik

   Author : Camilla Söderhielm; [2021]
   Keywords : Lithium-ion battery; State of Health; low-temperature ageing; high-temperature ageing; ageing mechanisms; Litiumjonbatteri; hälsotillstånd; lågtemperaturåldring; högtemperaturåldring; åldringsmekanismer;

   Abstract : Miljöpåverkan från konventionella förbränningsmotorer har bidragit till en övergång till elmotorer. I denna övergång spelar litiumjonbatterier en viktig roll som energilagringssystem, men på grund av sin reaktiva kemi kan de utgöra en säkerhetsrisk. READ MORE