Determination of transmission transfer capability using distributed contingency-constrained optimal power flow and P-V analysis

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Determination of transmission transfer capability using distributed contingency-constrained optimal power flow and P-V analysis

Authors
Publisher
서울대학교 대학원
Keywords
  • Available Transfer Capability (Atc)
  • Transient Stability
  • 총 송전능력
  • Total Transfer Capability (Ttc)
  • 분산처리 상정사고제약 최적조류계산
  • Distributed Contingency-Constrained Optimal Power Flow (Ccopf)
  • P-V 해석
  • P-V Analysis
  • 선로사고 분포계수
  • Line Outage Distribution Factor (Lodf)
  • 정적인 전압 안정도
  • Steady-State Voltage Stability
  • 과도 안정도
  • 가용송전능력

Abstract

During the last few years there has been a significant change in the operation of power systems. With the introduction of competition in the utility industry, it is possible for customers to buy less expensive electrical energy from remote locations. As a result of this transaction, there is a major change in the nature of power flow over the interconnected power systems. It is important to know how much power can be transferred safely across the system without violating any operating limits. In this regard, there has been an increased interest in quantifying the transmission transfer capability of power systems. Transfer capability indicates how much a particular bulk power transfer can be changed without compromising system security under a specific set of operating constraints. It is affected by the same factors that determine the interconnections, applicable line ratings, reactive support, system load distribution and level, and generation locations and dispatch. It should be evaluated considering contingencies as well as different stability limits. More recently, determination of transfer capability has many applications in planning and operation of power systems. The Federal Energy Regulatory Commission (FERC) rulings mandated the nondiscriminatory open access for the transmission network and the calculation of Available Transfer Capability (ATC) for each control area. ATC not simply measures the transfer capability remaining in the physical system to engage in further transactions above already committed uses, but evaluates the usable amount of the transmission network that is accessible to the interconnected system and could be transferred from the starting point to the end point of a path. Mathematically, ATC is defined as the Total Transfer Capability (TTC) less the Transmission Reliability Margin (TRM), less the sum of existing transmission commitments (which includes retail customer services) and the Capacity Benefit Margin (CBM). They form the basis o

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