Sökning: "Compensated neutral"

Hittade 3 avhandlingar innehållade orden Compensated neutral.

  1. 1. Fault location in resonant earthed medium voltage distribution systems

    Författare :Md Zakaria Habib; Nathaniel Taylor; Mohamed F. Abdelfattah; Matti Lehtonen; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electrical distribution; Distribution network; Reliability; SAIDI; Fault location; FL; Fault passage indicator; FPI; Compensated neutral; Resonant earthing; Resonant grounding; Petersen coil; Arc suppression coil.; Distributionsnät; Tillförlitlighet; Fellokalisering; FL; Felpassageindikation; FPI; Kompenserat nät; Spoljordat nät; Petersenspole.; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : A major challenge in electric distribution systems is to increase the reliability of the electricity supply in an economical way. At the final medium-voltage level in the system, such as 10 kV or 20 kV, a single feeder may supply tens of medium/low-voltage transformers and hundreds of customers, with many branches of lines and cables where faults can occur. LÄS MER

  3. 2. Experimental Evolution : and Fitness Effects of Mutations

    Författare :Anna Knöppel; Dan I Andersson; Stanley Maloy; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Experimental evolution; Fitness effects; mutations; S20; fis; ribosome; horizontal gene transfer; adaptation; synonymous mutations; Mikrobiologi; Microbiology;

    Sammanfattning : Bacteria have small, streamlined genomes and evolve rapidly. Their large population sizes allow selection to be the main driver of evolution. With advances in sequencing technologies and precise methods for genetic engineering, many bacteria are excellent models for studying elementary questions in evolutionary biology. LÄS MER

  4. 3. Genus im Wandel : Studien zu Genus und Animatizität anhand von Personenbezeichnungen im heutigen Deutsch mit Kontrastierungen zum Schwedischen

    Författare :Bettina Jobin; Gunnar Magnusson; Hans-Olav Enger; Damaris Nübling; Stockholms universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; agreement; animacy; contrastive linguistics; corpus linguistics; derivation; German; Swedish; grammatical gender; grammaticalization; inflectional morphology; language change; non-personal-agents; person reference; pronoun; Languages and linguistics; Språkvetenskap; Germanic languages; German;

    Sammanfattning : This study investigates, theoretically and empirically, the role of animacy in the development of gender systems. The theoretical background is a grammaticalisation approach to language change. LÄS MER