Search for dissertations about: "substations"

Showing result 1 - 5 of 35 swedish dissertations containing the word substations.

  2. 1. Distributed Signal Processing in Digital Substations : Integrating High Sampling Rate Measurements at the Process-Level

    Author : Fabian Hohn; Lars Nordström; Peter Crossley; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Communication networks; digital signal processing; digital substation; field-programmable gate array; filter design; IEC 61850; IEC 61869; power system protection; substation automation; Electrical Engineering; Elektro- och systemteknik;

    Abstract : Future power systems will be dominated by power electronic (PE) converter connected generation. This trend is primarily driven by the increasing penetration of wind power as well as the increasing integration of photovoltaic (PV) based generation. READ MORE

  4. 2. Fault detection in district heating substations

    Author : Kimmo Yliniemi; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Industriell elektronik; Industrial Electronics;

    Abstract : This thesis gives a summary of different faults that occur in district heating substations and suggests ways of detecting them. The aim of the research has been to achieve fault detection using only the heat meter and the sensors connected to it, namely two temperature sensors and one flow meter. READ MORE

  5. 3. District Heating Substations. Performance, Operation and Design

    Author : Janusz Wollerstrand; Energihushållning; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; extreme value; heater; sizing; domestic hot water; drag reducing additives; microbial fouling; heat exchanger fouling; simulation; design; performance; District heating; substation; Energy research; Energiforskning;

    Abstract : This thesis work is concerned with the efficient layout and operation of substations, i.e. those district heating (DH) system units which connect the network and internal building heating systems, such as radiator heating systems and domestic hot water distribution networks. READ MORE

  6. 4. Improving heat measurement accuracy in district heating substations

    Author : Yassin Jomni; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Industrial Electronics; Industriell elektronik;

    Abstract : The idea of district heating is to heat up a whole district from a central source through a distribution network. The heat is extracted from the distribution network by heat exchangers and the water is then subsequently returned to the central. READ MORE

  7. 5. Improving heat measurement accuracy in district heating substations

    Author : Yassin Jomni; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Industrial Electronics; Industriell elektronik;

    Abstract : The idea of district heating is to heat up a whole district from a central source through a distribution network. The heat is extracted by heat exchangers and the water is then subsequently returned to the central source. The heat exchange between the district heating network and the building occurs in district heating substations. READ MORE