Sökning: "transient faults"

Visar resultat 21 - 25 av 41 avhandlingar innehållade orden transient faults.

1. 21. Timing Analysis of Distributed Embedded Systems with Stochastic Workload and Realiability Constraints

   Författare :Bogdan Tanasa; Petru Eles; Zebo Peng; Unmesh Dutta Bordoloi; Lucia Lo Bello; Linköpings universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; embedded systems; perfomance analysis; real-time systems; distributed systems; fault tolerance; probabilistic analysis;

   Sammanfattning : Today's distributed embedded systems are exposed to large variations in workload due to complex software applications and sophisticated hardware platforms. Examples of such systems are automotive and avionics applications.The tasks running on computational units have variable execution times. LÄS MER

3. 22. 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

4. 23. Shared Resources in Distributed Systems: Analytical Tools for Evaluation and Self-stabilizing Provisioning

   Författare :Iosif Salem; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; self-stabilization; smart grid; online algorithms; shared object systems; resource sharing; software-defined networks; distributed algorithms;

   Sammanfattning : Distributed computing is an established computing paradigm of modern computing systems.The nodes of a distributed system interact either by sharing resources or via a communication network. In both cases, provisioning of shared resources is a challenge, for example when resource demand and supply varies or when the system is prone to failures. LÄS MER

5. 24. The control of VSC-HVDC and its use for large industrial power systems

   Författare :Cuiqing Du; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; VSC-HVDC; inner current controller; outer controller; PWM; dc dc converter; voltage dips; dc networks;

   Sammanfattning : With the recent developments in semiconductors and control equipment, Voltage Source Converter based High Voltage direct Current (VSC-HVDC) has become feasible. Due to the use of VSC technology and Pulse Width Modulation (PWM), it has a number of potential advantages: short circuit current reduction; rapid, independent control of the active and reactive power, etc. LÄS MER

7. 25. Fast fault detection for power distribution systems

   Författare :Magnus Öhrström; KTH; []
   Nyckelord :fast fault detection; power systems;

   Sammanfattning : The main topic of this licentiate thesis is fast faultdetection. The thesis summaries the work performed in theproject“Fast fault detection for distributionsystems”.In the first chapters of the thesis the term“fast”is used in a general manner. LÄS MER