Fuzzy Power Flow Calculation of Line Returned Based on Uncertainties

LI Hui; PAN Xudong; LIU Dichen; WU Jun; ZHAO Yijie; DONG Feifei

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Electric Power Construction ›› 2013, Vol. 34 ›› Issue (2) : 6-10.

Fuzzy Power Flow Calculation of Line Returned Based on Uncertainties

LI Hui1, PAN Xudong2, LIU Dichen2, WU Jun2, ZHAO Yijie2， DONG Feifei

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Abstract

There are many uncertainties in the power system, which have profound significance on the evaluation of lines’ priority. With the application of fuzzy set theory, the fuzzy calculation method of power flow after line returned is proposed, by taking generator output and load uncertainties into account. The generator output, generator availability and load uncertainties are described by the trapezoidal fuzzy numbers. Combined with the sensitivity-based approach of the existing fast algorithm, the possible flow distribution after the line returned is obtained. Then the necessity of considering the uncertainties in the analysis of the system state when line returned and the value of the approach introduced in this paper are verified. Finally, the calculation result of IEEE-30 bus system is provided.

Key words

uncertainty / fuzzy number / line returned / sensitivity / power flow

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LI Hui, PAN Xudong, LIU Dichen, WU Jun, ZHAO Yijie， DONG Feifei. Fuzzy Power Flow Calculation of Line Returned Based on Uncertainties[J]. Electric Power Construction. 2013, 34(2): 6-10

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