Economic Generation Allocation with Power Equation Constraints

모선 전력방정식을 제약조건으로 하는 경제적 발전력 연산방법

  • 엄재선 (충남대학교 전기공학과) ;
  • 김건중 (충남대학교 전기공학과) ;
  • 이상중 (서울산업대학교 전기공학과) ;
  • 최장흠 (충남대학교 전기공학과)
  • Published : 2002.08.01

Abstract

The ELD computation has been based upon the so-called B-coefficient which uses a quadratic approximation of system loss as a function of generation output. Direct derivation of system loss sensitivity based on the Jacobian-based method was developed in early 1970s', which could eliminate the dependence upon the approximate loss formula. However, both the B-coefficient and the Jacobian-based method require a complicated Procedure for calculating the system loss sensitivity included in the constraints of the optimization problem. In this paper, an ELD formulation in which only the bus power equations are defined as the constraints has been introduced. Derivation of the partial derivatives of the system loss with respect to the generator output and calculation of the penalty factors for individual generators are not required anymore in proposed method. A comprehensive solution procedure including calculation of the Jacobians and Hessians of the formulation has been presented in detail. Proposed ELD formulation has been tested on a sample system and the simulation indicated a satisfactory result.

Keywords

References

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