Search for dissertations about: "power system security assessment"

Showing result 1 - 5 of 16 swedish dissertations containing the words power system security assessment.

  2. 1. Dynamic Security Region Assessment

    Author : Marina Oluic; Mehrdad Ghandari; Bertil Berggren; Jovica V. Milanovic; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; parametrization; power system transient stability; security boundary; short-term voltage instability; Voltage Impasse Region VIR ; parametrisering; spänningsimpassregion VIR ; spänningsinstabilitet; säkerhetsgräns; transient stabilitet i kraftsystem; Electrical Engineering; Elektro- och systemteknik;

    Abstract : Among a wide variety of topics that are covered by Dynamic Security Assessment (DSA), maintaining synchronous operation and acceptable voltage profiles stand out. These two stability categories are mostly jeopardized in the seconds after a large contingency occurs. READ MORE

  4. 2. Assessment of Enterprise Information Security : How to make it Credible and Efficient

    Author : Erik Johansson; Torsten Cegrell; Rune Gustavsson; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Enterprise Information Security; Enterprise Architecture; Security Assessment; Information Technology Management; Information technology; Informationsteknik;

    Abstract : Information is an important business asset in today’s enterprises. Hence enterprise information security is an important system quality that must be carefully managed. READ MORE

  5. 3. Probabilistic security management for power system operations with large amounts of wind power

    Author : Camille Hamon; Lennart Söder; Louis Wehenkel; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Power systems; wind power; probabilistic security management; chance-constrained optimal power flow; monte-carlo; importance sampling; Electrical Engineering; Elektro- och systemteknik;

    Abstract : Power systems are critical infrastructures for the society. They are therefore planned and operated to provide a reliable eletricity delivery. The set of tools and methods to do so are gathered under security management and are designed to ensure that all operating constraints are fulfilled at all times. READ MORE

  6. 4. A framework and theory for cyber security assessments

    Author : Teodor Sommestad; Mathias Ekstedt; Ruth Breu; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; cyber security; security assessment; vulnerability assessment; architecture modeling; enterprise architecture;

    Abstract : Information technology (IT) is critical and valuable to our society. An important type of IT system is Supervisor Control And Data Acquisition (SCADA) systems. These systems are used to control and monitor physical industrial processes like electrical power supply, water supply and railroad transport. READ MORE

  7. 5. Power System Security Assessment - Application of Learning Algorithms

    Author : Christian Andersson; Industriell elektroteknik och automation; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : The last years blackouts have indicated that the operation and control of power systems may need to be improved. Even if a lot of data was available, the operators at different control centers did not take the proper actions in time to prevent the blackouts. READ MORE