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Capacity benefit margin assessment based on multi-area reliability exponential analytic model

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4 Author(s)
Rong-fu Sun ; Dept. of Electr. Eng., Tsinghua Univ., Beijing ; Lin Chen ; Yong-hua Song ; Yuan-Zhang Sun

In the environment of the power market, available transfer capability (ATC) is a measure of transfer capability as the technical and commercial indices. In order to meet the requirement of generation reliability by obtaining the support from interconnected areas, the reserve transfer capability of the transmission lines is defined as capacity benefit margin (CBM). At present, CBM is evaluated and optimized through reliability calculation iteration. Based on the generation reliability exponential analytic model of interconnected areas, according to the influence of generation installed capacity (or tie line transmission capacity) and reserve clearing prices, this paper establishes three models and uses the sequential quadratic programming (SQP) to solve the CBM of transmission lines with respect to variable reliability levels. Due to the analytic model, reliability is calculated one time, need no iteration and the coupling influence between areas is taken into account, the optimal results can be fast computed. Test results on TH - RTS show that this method is precise and effective.

Published in:

Transmission and Distribution Conference and Exposition, 2008. T&D. IEEE/PES

Date of Conference:

21-24 April 2008