Essays about: "IBR"

Showing result 1 - 5 of 8 essays containing the word IBR.

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. Evaluation of Symmetrical Components Theory in Power Systems with Renewable Sources

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

   Author : Daniil Danylov; [2021]
   Keywords : Symmetrical components theory; fault analysis; renewable sources; power electronics; PSCAD EMTDC; two bus system; inverter-based resources; line protection; nonlinear source.; Teori om symmetriska komponenter; felanalys; förnybara källor; kraftelektronik; PSCAD EMTDC; tvåbussystem; inverterbaserade resurser; linjeskydd; icke- linjär källa.;

   Abstract : Rapidly growing Inverter- Based Resources (IBR) have different fault properties compared to Synchronous Generators (SG). Therefore, it is necessary to study the fault behavior of systems that contain different types of IBR and compare it to the conventional system responses in order to understand what steps should be taken to adapt conventional protection settings for new types of sources. READ MORE

4. 3. Immediate breast reconstruction in breast cancer patients2018 at the University Hospital of Örebro

   University essay from Örebro universitet/Institutionen för medicinska vetenskaper

   Author : Emily Gromelsky Ljungcrantz; [2020]
   Keywords : Breast cancer; Mastectomy; Reconstruction; IBR;

   Abstract : Introduction: To save lives, mastectomy is an essential intervention, but it can also causephysical and psychological trauma. An important step in restoring breast cancer patient’squality of life is to offer reconstruction. Immediate breast reconstruction (IBR) is thealternative that provides highest patient-reported life quality post surgery. READ MORE

5. 4. Immediate breast reconstruction after mastectomy at Örebro University Hospital

   University essay from Örebro universitet/Institutionen för medicinska vetenskaper

   Author : Linneá Larsson; [2019]
   Keywords : Breast cancer; Immediate breast reconstruction; Mastectomy; Contraindications; Radiotherapy;

   Abstract : Abstract Introduction Immediate breast reconstruction (IBR) can be offered to breast cancer patients after mastectomy. A satisfactory breast symmetry has positive effects on psychosocial morbidity, quality of life and body image. The frequency of IBR were in 2017 in Region Örebro County 4%, lower than the national target on 20%. READ MORE

6. 5. An eco-city indicator system for the city of Changsha.

   University essay from KTH/Mark- och vattenteknik

   Author : Zizhu Zhang; [2015]
   Keywords : indicator system; AHP; GIS; evaluation; sustainability; urban development; Two oriented society;

   Abstract : With rapid urban development in China, many cities are still concerned about the quantity of the economy growth while ignoring the quality of the growth; ecological systems face a challenging situation. How to evaluate and guide a sustainable devel-opment is a vitally important question to the government of China. READ MORE