Z. Song

Publications (3)0.48 Total impact

• Article: Optimal spinning reserve allocation in deregulated power systems

  Z. Song, L. Goel, P. Wang
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  ABSTRACT: In a deregulated power system, spinning-reserve (SR) can be allocated to different ancillary service providers at different locations based on supplier bids and customer choices in terms of reliability and the related cost. The paper investigates the impacts of spinning-reserve allocations on system reliability and cost. A hybrid SR allocation method, which is based on cost-based SR allocation and risk based SR allocation, is proposed to determine the optimal SR locations. Implementation of these techniques in SR markets to determine the optimal SR schedules is presented. The IEEE Reliability Test System has been used to illustrate the proposed methods.
  IEE Proceedings - Generation Transmission and Distribution 08/2005; · 0.48 Impact Factor
• Conference Proceeding: Risk based spinning reserve allocation in deregulated power systems

  Z. Song, L. Goel, P. Wang
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  ABSTRACT: In a deregulated power system, spinning reserve can be allocated to different ancillary service providers at different locations based on the supplier bids and customer choices on the reliability levels required. Different allocations of spinning reserve are expected to create different impacts on the reliability of the physical power system. When transmission failures occur in a physical power system, the system constraints may be violated and spinning reserve may not be immediately committed to the system to serve the customers. This paper investigates the impact of transmission system failures on spinning reserve allocation. A technique is proposed to determine the locations of spinning reserve based on the minimum unit commitment risk.
  Electric Utility Deregulation, Restructuring and Power Technologies, 2004. (DRPT 2004). Proceedings of the 2004 IEEE International Conference on; 05/2004
• Article: Well-being analysis of spinning reserve in a bilateral power market

  L Goel, Z Song, P Wang
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  ABSTRACT: In a deregulated power system customers have the freedom to choose their reliability. They can purchase spinning reserve directly from electric power providers. In this case, an individual customer is concerned more with its own load point reliability rather than with the system reliability. This paper introduces bulk load point (BLP) well-being indices for supply customers, with the primary objective of determining their spinning reserve based on desired reliability levels in a bilateral market model. The system well-being model used in conventional power systems is extended to the load point model in a restructured power system. The impacts of spinning reserve purchase on these indices were investigated and are reported in the paper. A reliability test system is used to illustrate how customers can determine their spinning reserve in the deregulated environment.
  Electric Power Systems Research.