University of SaskatchewanHARVEST
  • Login
  • Submit Your Work
  • About
    • About HARVEST
    • Guidelines
    • Browse
      • All of HARVEST
      • Communities & Collections
      • By Issue Date
      • Authors
      • Titles
      • Subjects
      • This Collection
      • By Issue Date
      • Authors
      • Titles
      • Subjects
    • My Account
      • Login
      JavaScript is disabled for your browser. Some features of this site may not work without it.
      View Item 
      • HARVEST
      • Electronic Theses and Dissertations
      • Graduate Theses and Dissertations
      • View Item
      • HARVEST
      • Electronic Theses and Dissertations
      • Graduate Theses and Dissertations
      • View Item

      COMPREHENSIVE RISK ASSESSMENT FOR RELIABLE POWER SYSTEM OPERATION

      Thumbnail
      View/Open
      NEPAL-THESIS-2017.pdf (962.6Kb)
      Date
      2017-03-09
      Author
      Nepal, Nahakul
      Type
      Thesis
      Degree Level
      Masters
      Metadata
      Show full item record
      Abstract
      Rising uncertainty in power systems due to different system and operational requirement has led to increasing risks in the system operation. There are growing concerns with the widely used methods, such as the N-1 criterion, to determine operating reserve requirement during unit commitment, and the economic load dispatch method to allocate regulating margin to respond to disturbances. These deterministic methods do not consider the stochastic nature of power systems and are often inadequate to maintain the required operating reliability. This thesis introduces a comprehensive operating risk index, designated as the committed generators’ response risk (CGRR) that can be used to maintain a specified level of operating reliability. An analytical probabilistic method to evaluate the CGRR is presented and validated using a Monte Carlo simulation technique. An application of the new index and the methodology is illustrated using the IEEE RTS system. The evaluation of CGRR provides a comprehensive operating risk of the scheduled generation until further assistance is available to the system and, therefore, helps operators in decision making for unit commitment and dispatch of the generating units to meet the projected load in the short future time. There is an increasing trend of wind energy integration to the existing power system for its environmental benefits. But the wind power can create more challenges to the modern power systems due to possible wind disturbances. To appropriately quantify the wind variability, a short term wind power disturbance model is proposed by utilizing conditional probability approach. The information on operating risk of a wind connected power system can help operators to act prudently while operating a power system in a reliable manner. The developed CGRR based operating strategies can be used to continuously track the system risk level and take necessary actions before the undesirable consequences occurs.
      Degree
      Master of Science (M.Sc.)
      Department
      Electrical and Computer Engineering
      Program
      Electrical Engineering
      Supervisor
      Karki, Rajesh
      Committee
      Faried, Sherif O.; Oguocha, Ikechukwuka N.; Teng, Daniel
      Copyright Date
      June 2017
      URI
      http://hdl.handle.net/10388/7779
      Subject
      Comprehensive generators' response risk, Operating risk, Unit commitment, Load dispatch, Regulating margin, Wind power disturbance
      Collections
      • Graduate Theses and Dissertations
      University of Saskatchewan

      University Library

      The University of Saskatchewan's main campus is situated on Treaty 6 Territory and the Homeland of the Métis.

      © University of Saskatchewan
      Contact Us | Disclaimer | Privacy