Journal of Modern Power Systems and Clean Energy

ISSN 2196-5625 CN 32-1884/TK

Operational reliability evaluation of restructured power systemswith wind power penetration utilizing reliability networkequivalent and time-sequential simulation approaches
Author:
Affiliation:

1. School of Information and Control, Nanjing University of Information Science & Technology, Nanjing, China 2. Department of Electrical Engineering, Technical University of Denmark, Lyngby, Denmark 3. Department of Electrical Engineering, Tsinghua University, Beijing, China 4. State Grid Electric Power Research Institute, Nanjing, China

Fund Project:

Chinese National Natural Science Funds under Grant 51177078.

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    Abstract:

    In the last two decades, the wind power generation has been rapidly and widely developed in many regionsand countries for tackling the problems of environmental pollution and sustainability of energy supply. However, the high share of intermittent and fluctuating wind power production has also increased the burden of system operator for securing power system reliability during the operational phase. Moreover, the power system restructuring and dereg-ulation have not only introduced the competition for reducing cost but also changed the strategy of reliability evaluation and management of power systems. The conventional long-term reliability evaluation techniques have been well developed,which have been more focused on planning and expansion rather than operation of power systems. This paper proposes anew technique for evaluating operational reliabilities of restructured power systems with high wind power penetration. The proposed technique is based on the combination ofthe reliability network equivalent and time-sequential simu-lation approaches. The operational reliability network equivalents are developed to represent reliability models of wind farms, conventional generation and reserve provides,fast reserve providers and transmission network in restruc-tured power systems. A contingency management schema forreal time operation considering its coupling with the day-ahead market is proposed. The time-sequential Monte Carlosimulation is used to model the chronological characteristicsof corresponding reliability network equivalents. A simplifiedmethod is also developed in the simulation procedures for improving the computational efficiency. The proposed tech-nique can be used to evaluate customers’ reliabilities considering high penetration of wind power during the power system operation in the deregulated environment.

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History
  • Received:
  • Revised:
  • Adopted:
  • Online: May 22,2015
  • Published: