Essays about: "Drift stability analysis"

Showing result 1 - 5 of 11 essays containing the words Drift stability analysis.

1. 1. Study of Production Drifts Stability and Assessment of Reinforcement Requirements at LKAB Konsuln Test-Mine Levels 436 and 486 Using Geologic Structures Data, and Modelling Software – Dips and Unwedge:  a Part of dp1 Project (Mine Layout and Technology) of the Sustainable Underground Mining (Sum) Project

   University essay from Uppsala universitet/Institutionen för geovetenskaper

   Author : Oludare Joseph Olufe; [2021]
   Keywords : Drift stability analysis; underground excavation reinforcement; underground mining stability assessment; geologic structures; wedges modelling; rock mechanical analysis; Unwedge program; Dips program;

   Abstract : Study of Production Drifts Stability and Assessment of Reinforcement Requirements at LKAB Konsuln Test-Mine Levels 436 and 486 Using Geologic Structures Data, and Modelling Software - Dips and Unwedge:  a Part of dp1 Project (Mine Layout and Technology) of the Sustainable Underground Mining (Sum) Project Oludare Joseph Olufe Global population has been on exponential increase over the past half century. The population explosion is driving massive urbanization and infrastructure developments across the globe, which result in huge demand for metals, especially steel. READ MORE

3. 2. Microgrid Safety and Protection Strategies

   University essay from KTH/Elektroteknisk teori och konstruktion

   Author : Aryudha Hartono; [2018]
   Keywords : IB-RES; grid-connected mode; islanded mode; short circuit; IED; directional zero and negative sequence current protection; unbalanced load flow; protection coordination; fault ride-through;

   Abstract : One of the challenging issues with the Microgrid is that the bidirectional power flow providedby the distributed generator (DG) which modify the fault current level. Furthermore, theinverter based-renewable energy source (IB-RES) limits the total fault current contributionto the grid due to its thermal capability. READ MORE

4. 3. Analysis of Catenary Shaped Timber Structures

   University essay from Lunds universitet/Avdelningen för Konstruktionsteknik

   Author : Kristoffer Persson; [2018]
   Keywords : Timber construction; Caternary structures; Tensile timber roof; Stress ribbon; Technology and Engineering;

   Abstract : In the design of a building there are many parameters that effect the material efficiency. The choice of structural solution and material are two of the parameters that will be investigated further in this rapport. READ MORE

5. 4. The impacts of series compensated EHV lines on distance protection, and a proposed new mitigation solution

   University essay from KTH/Elektroteknisk teori och konstruktion

   Author : Syed Arif Ullah Shah; [2017]
   Keywords : Series compensation; metal oxide varistor; voltage inversion; current inversion; sub-synchronous oscillation; quadrilateral characteristic distance relay; digital high-pass filter; Seriekompensation; metalloxidvaristor; spänningsinversion; ströminversion; subsynkron oscillation; fyrsidig karakteristiskt distansrelä; digitalt högpassfilter;

   Abstract : Series compensation is extensively applied to the transmission lines to increase the power transfer capability of transmission lines, reduce transmission losses, improve voltage profiles, and improve power oscillation damping and transient stability of power systems. But it modifies the apparent impedance of the transmission lines during fault conditions and might cause the distance protection of transmission lines to encounter directional discrimination issues and reach problems. READ MORE

6. 5. MPC Design For Autonomous Drifting

   University essay from KTH/Reglerteknik

   Author : Corvin Kück; [2017]
   Keywords : ;

   Abstract : The goal of this thesis is to evaluate the performance of different controllers to keep a remotecontrolledvehicle in a sustained drift. A bicycle model and an empirical tyre model are used formodelling the vehicle. READ MORE