基于混沌序列的变压器油色谱数据并行聚类分析

doi:10.19595/j.cnki.1000-6753.tces.181894

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Abstract

Transformer oil chromatographic analysis (DGA) is an important technical method for transformer operation and maintenance, and Fuzzy C-Means clustering is an important intelligent algorithm for DGA. However, the objective function of the clustering algorithm is a typical non-convex function and the optimization process is a hill-climbing algorithm based on local search. Consequently, the iterative process is easy to fall into local extremum, and the algorithm cannot classify effective oil chromatographic data. Chaotic variables have randomness and ergodicity, making global optimization possible. In this paper, the chaotic sequence is used to perform “artificial mutation” on the cluster center in the process of cluster iteration, and multiple optimization trajectories are set in parallel. In the iterative process, each of the optimized trajectories is deduced according to its own gradient information, and also the optimization information of the remaining trajectories is shared. The original optimization trajectory can be changed in the process of iterative optimization, thereby avoiding the optimization process from terminating at the local extreme point and achieving global optimization. The case analysis shows that the proposed method achieves the global optimization of clustering analysis and improves the ability of fuzzy clustering algorithm to identify DGA fault patterns, which has practical application value.

Key words： Global convergence fuzzy clustering analysis transformer fault diagnosis dissolved gas analysis

Received: 06 December 2018 Published: 30 December 2019

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TM72

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	Li Enwen
	Wang Linong
	Song Bin
	Fang Yaqi

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Li Enwen,Wang Linong,Song Bin等. Parallel Clustering Analysis of Dissolved Gas Analysis Data Based on Chaotic Sequences[J]. Transactions of China Electrotechnical Society, 2019, 34(24): 5104-5114.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.181894 OR https://dgjsxb.ces-transaction.com/EN/Y2019/V34/I24/5104

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