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A comprehensive evaluation system for distribution network based on connection modes

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3 Author(s)
Pan Feng ; Southern Power Supply Co., Shanghai Municipal Electr. Power Corp., Shanghai, China ; Zhou Min ; Wang Lihua

To solve the problem of lacking of effective quantitative evaluation methods to the connection modes of distribution network, a comprehensive evaluation system is introduced in this paper. Maximal short circuit current, maximal voltage drop, voltage shift, average service availability index (ASAI), system average interruption duration index (SAIDI) and annual cost for unit load are selected as evaluating indices. Functions of fuzzy membership grade are constructed according to the above indices. Satisfaction degree of each index of a certain connection mode is then evaluated quantitatively by these functions. The final degree, or comprehensive satisfaction degree, is determined by weighted average of each index and is used to evaluate the certain connection mode. The 10 kV distribution network planning of a district in Shanghai, China is selected as an actual example, in which several planning alternatives are evaluated based on this method. The results of the example show that the method proposed in this paper can not only evaluate the connection modes quantitatively in an effective way, but also reflect the key elements influencing the characteristics of network planning.

Published in:

Electricity Distribution, 2008. CICED 2008. China International Conference on

Date of Conference:

10-13 Dec. 2008