Search for dissertations about: "transmission system reliability"

Showing result 6 - 10 of 95 swedish dissertations containing the words transmission system reliability.

2. 6. Condition measuring and lifetime modelling of electrical power transmission equipment

   Author : Per Westerlund; Patrik Hilber; Tommie Lindquist; Carl-Ejnar Sölver; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; disconnectors; circuit breakers; reliability; lifetime; electric contacts; electric power transmission; Electrical Engineering; Elektro- och systemteknik;

   Abstract : The electric grid is important in modern society, so the outages should be few. The transmission grid should have a real high availability, since it transports electrical energy across the country. Then, it is difficult to plan outages for maintenance and installation. READ MORE

4. 7. Powerful tool for analysis of systems containing traction point contacts

   Author : Mikael Törmänen; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; rolling and spinning hertzian point contacts; continuously variable transmission CVT ; traction drive variator; complete elliptical integrals; multi-body system MBS ; virtual prototyping;

   Abstract : .... READ MORE

5. 8. Condition measuring and lifetime modelling of disconnectors, circuit breakers and other electrical power transmission equipment

   Author : Per Westerlund; Patrik Hilber; Tommie Lindquist; William Q Meeker; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; reliability; maintenance; condition monitoring; disconnector; circuit breaker; Weibull distribution; prediction; risk analysis; decision making; beta distribution; Electrical Engineering; Elektro- och systemteknik;

   Abstract : The supply of electricity is important in modern society, so the outages of the electric grid should be few and short, especially for the transmission grid. A summary of the history of the Swedish electrical system is presented. The objective is to be able to plan the maintenance better by following the condition of the equipment. READ MORE

6. 9. Component reliability importance indices for maintenance optimization of electrical networks

   Author : Patrik Hilber; Roland Eriksson; Lina Bertling; Gerd Kjolle; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electrical power technology; Reliability Importance Index; Maintenance Optimization; Asset Management; Customer Interruption Cost; Reliability Centred Maintenance RCM ; Reliability Centered Asset Management RCAM ; Monte Carlo Simulation; Elkraftteknik; Electric power engineering; Elkraftteknik;

   Abstract : Maximum asset performance is one of the major goals for electric power system managers. To reach this goal minimal life cycle cost and maintenance optimization become crucial while meeting demands from customers and regulators. READ MORE

7. 10. Blind Massive MIMO Base Stations : Downlink Transmission and Jamming

   Author : Marcus Karlsson; Erik G. Larsson; Emil Björnson; Ralf Müller; Linköpings universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Abstract : Massive MIMO (Multiple-Input--Multiple-Output) is a cellular-network technology in which the base station is equipped with a large number of antennas and aims to serve several different users simultaneously, on the same frequency resource through spatial multiplexing. This is made possible by employing efficient beamforming, based on channel estimates acquired from uplink reference signals, where the base station can transmit the signals in such a way that they add up constructively at the users and destructively elsewhere. READ MORE