Sökning: "short-term operation"

Visar resultat 1 - 5 av 88 uppsatser innehållade orden short-term operation.

  1. 1. On The Evaluation of District Heating Load Predictions

    Master-uppsats, Lunds universitet/Institutionen för energivetenskaper

    Författare :Herman Hansson; [2023]
    Nyckelord :Technology and Engineering;

    Sammanfattning : District Heating is a technology with the potential to enable a fossil-free society. However, to realize this potential, some improvements need to be made in order to improve District Heating operation at large, decrease losses in the systems, and thus increase the competitiveness of District Heating as a technology. LÄS MER

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

    Uppsats för yrkesexamina på avancerad nivå, Mälardalens universitet/Framtidens energi

    Författare :Josefin Rojas Vazquez; [2023]
    Nyckelord :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;

    Sammanfattning : 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. LÄS MER

  4. 3. Unsupervised Anomaly Detection in Multivariate Time Series Using Variational Autoencoders

    Magister-uppsats, Lunds universitet/Matematik LTH

    Författare :Elias Aronsson; [2023]
    Nyckelord :Anomaly Detection; Variational Autoencoder VAE ; Unsupervised Learning; Machine learning; AI; Technology and Engineering;

    Sammanfattning : In this master’s thesis, a novel unsupervised anomaly detection tool was developed in collaboration with Sandvik Rock Processing to assist engineers and experts in analyzing large amounts of sensor data from cone crushers used in the stone crushing industry. The tool focuses on analyzing power, pressure, and CSS sensor data. LÄS MER

  5. 4. Teknoekonomisk studie för potentialen för lokal vätgasproduktion i Västerås regionen : För försörjning av regionens interna behov från tunga transporter

    Uppsats för yrkesexamina på avancerad nivå, Mälardalens universitet/Akademin för ekonomi, samhälle och teknik

    Författare :Amez Aspitman; Barek Magid; [2022]
    Nyckelord :Hydrogen; hydrogen production; hydrogen filling stations; electrolysis; heavy-duty vehicles; gasification plant; LCOH; net present value; Vätgas; vätgasproduktion; vätgastankstation; elektrolys; tung transport; förgasningsanläggning; LCOH; nuvärde;

    Sammanfattning : In conjunction with Sweden's goal of reducing emissions and dependence on fossil fuels in the transport sector, hydrogen technology has received considerable attention. Today, several studies are being carried out into hydrogen technology that focus on developing the production, application, storage and distribution of hydrogen. LÄS MER

  7. 5. The influence of short-term forecast errors in energy storage sizing decisions

    Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

    Författare :Adrian Bagger Toräng; Viktor Rönnblom; [2022]
    Nyckelord :Energy storage system; Pumped hydro energy storage; Electricity price forecast; Forecast error; Sizing; Robust decision making; Energilagringssystem; Pumpkraftverk; Elprisprognos; Prognosfel; Dimensionering; Robust beslutstagande;

    Sammanfattning : Pumped hydro energy storages commonly plan their operations on short-term forecasts of the upcoming electricity prices, meaning that errors in these forecasts would entail suboptimal operations of the energy storage. Despite the high investment costs of pumped hydro energy storages, few studies take a holistic approach to the uncertainties involved in such investment decisions. LÄS MER