Essays about: "ställverk"

Showing result 1 - 5 of 13 essays containing the word ställverk.

1. 1. Substation digitalization and fault isolation : A study of the influence of degree of digitalization to regulatory indicators in the power grid

   University essay from KTH/Skolan för industriell teknik och management (ITM)

   Author : Ili Atalla; [2023]
   Keywords : ;

   Abstract : With changes in the energy sector, more demand is set on the power grid as electricity consumption is seen to increase and more decentralized renewable energy production is connecting to the grid. Svenska Kraftnät, electric system transmission operator in Sweden, describes the importance a more secure operation of the power system. READ MORE

3. 2. Coincidence Factor and Battery Energy Storage Systems for Industrial Electrical Power Supply : A Field Study of Building 178 at Scania AB, Södertälje

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

   Author : Lucas Wallhager; [2023]
   Keywords : Coincidence factor; Industrial electric load diversity; Velander; Normal distribution; Herman-Beta; Battery energy storage system; Sammanlagringsfaktor; Industriell elförbrukning; Velander; Herman-Beta; Batterier för energilagring;

   Abstract : Coincidence factors have been researched since the late 1800s, as they displays the ratio between the maximum coincidencental power usage of a system, and the sum of the maximum individual loads of the system. Accurate estimations of the highest coincidental power usage allow for minimal material usage when constructing substations, transformers, overhead lines, and cables for power transmission. READ MORE

4. 3. Life Cycle Cost of Smart Wayside Object Controller

   University essay from KTH/Spårfordon

   Author : Filipp Zarov; [2021]
   Keywords : railway signalling system; interlocking; hardware; Object Controller; Smart Wayside Object controller; Lifecycle Cost; renewable energy sources; järnvägssignalsystem; ställverk; hårdvara; Utdelar; SWOC; livscykelkostnad; förnybara energikällor;

   Abstract : In a regional railway signalling system, object controllers are the devices responsible for controlling Track Side Equipment and act as interfaces for TSE with the interlocking computer and the Traffic control system. However, associated cabling (signal and power cabling) and civil works pose a major capital investment and it is a source of significant Capital and Operational expenses, particularly in rural areas, where accessibility andconnectivity to power grid and to the interlocking are a problem. READ MORE

5. 4. Open Source Model of the Nordic Power System for EU Project Spine

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

   Author : Aravind Satheeskumar; [2020]
   Keywords : Nordic Power System; power system modelling; power flow analysis; optimisation; transmission line parameter estimation; Nordic Power System; modellering av kraftsystem; effektflödesanalys; optimering; uppskattning av transmissionslinje-parametrar;

   Abstract : Decision problems in operation and planning of power systems often rely on large-scale models and data sets. Lack of historical power flow data due to regulatory restrictions often limits researchers to study the system with aggregated network models. READ MORE

6. 5. Modelling & Design of a Prototype DC/DC Converter for Trip Coil Applications

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

   Author : Georgios Apostolou; [2020]
   Keywords : ;

   Abstract : High voltage circuit breaker testing is a major part in substation test industry. The minimum trip voltage test is one of the standard circuit breaker tests performed. READ MORE