浙江大学学报(工学版)  2018, Vol. 52 Issue (9): 1753-1761    DOI: 10.3785/j.issn.1008-973X.2018.09.016
 电气工程

Optimized power source operation mode selection method for relay setting calculation
WANG Hui-fang, CHEN Meng-xiao, SHEN Shao-fei, HE Ben-teng
College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
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Abstract:

A power source contribution coefficient-based optimized method was proposed to increase the reasonability and efficiency of the power source operation mode selection in relay setting calculation. The concept of power source contribution coefficient and corresponding calculation method based on the node impedance matrix were presented. A system operation mode selection method based on the power source contribution coefficients of the protected line and infeed branches was developed. The effectiveness of the proposed method was verified through the case study of New England 39-Bus test system. Results show that by utilizing the proposed infeed coefficient calculation method, the specific operation modes of different power sources corresponding to the maximal and minimal infeed coefficient values can be determined precisely. This process does not need permutation or combination, which improves the efficiency and accuracy of the automatic relay setting calculations.

 CLC: TM773

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WANG Hui-fang, CHEN Meng-xiao, SHEN Shao-fei, HE Ben-teng. Optimized power source operation mode selection method for relay setting calculation. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 2018, 52(9): 1753-1761.

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