Research on Optimization Control Strategy for Limiting Short-Circuit Current Based on Fuzzy Quantitative Control

Abstract:

To decrease short-circuit current, adjusting the power network operation by breaking transmission lines is the most economic and convenient measure. For large power grid, breaking transmission lines has thousands of combinations, so it's very difficult to find the best combination in a short time. Firstly, this paper formulated the sensitivity relationship between transmission line outage and impedance change. Then preliminary combinations schemes of transmission line outage were selected according to the sensitivity. Index values of factors were given using the fuzzy control evaluation. Finally, this paper determined optimal scheme from maximum priority and accomplished the accessorial intelligent optimize system of limiting short-circuit current. The rapidity and rapidity of the proposed control strategy was verified by calculating the actual power grid.

• Periodical: Applied Mechanics and Materials (Volume 214)
• Pages: 527-530
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.214.527
• Online since: November 2012
• Authors: Guang Lei Li, Shu Min Sun, Yan Cheng, Hong Bo Li, Shuai Yuan
• Keywords: Current-Limiting Measures, Fuzzy Quantitative Control, Impedance Sensitivity, Optimization Algorithm

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