基于APO-MVMD-Transformer的电缆故障定位方法

doi:10.3976/j.issn.1002-4026.20240144

Abstract

Abstract:

To address the low accuracy and reliability of existing power cable fault-location methods, a new cable fault-location method based on APO-MVMD-Transformer is proposed in this study. The collected cable fault signal is decoupled through phase-mode transformation to obtain the fault traveling wave signal. The Arctic puffin optimization (APO) optimized multivariate variational mode decomposition (MVMD) parameters are then used to decompose this traveling wave signal. The Teager energy operator is applied to extract instantaneous energy variations in the high-frequency modal components, allowing the identification of the wavefront arrival times. The sampling points corresponding to these times are then used as feature values to construct a feature dataset, which is further employed to optimize the APO-Transformed-based model. Finally, feature dataset are input into the APO-Transformer-based location model to locate cable faults. Results showed that the proposed model exhibited a coefficient of determination as high as 0.999 91, a relative fault-location error within 1%, and a distance error within 100 m, thereby demonstrating high fault location accuracy.

Key words: fault location, phase-mode transformation, Arctic puffin optimization, multivariate variational mode decomposition, Teager energy, Transformer

CLC Number:

TM247

SUN Jie, SUN Yuwei, HU Guodong, YIN Haihai, JIANG Xuyong, MA Hongzhong. Cable fault location method based on APO-MVMD-Transformer[J].Shandong Science, 2025, 38(6): 94-106.

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References 15

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IMF分量	L端峭度值	R端峭度值
IMF1	1.982 9	1.976 2
IMF2	3.662 0	3.150 9
IMF3	6.169 8	6.276 4
IMF4	7.326 5	11.034 5
IMF5	9.998 9	15.353 5
IMF6	13.883 1	22.654 6
IMF7	18.728 0	37.088 6
IMF8	32.247 4	59.094 4
IMF9	85.879 7	162.770 3

实际故障距离/km	模型定位结果/km	相对误差/%
5	4.956 9	0.862 0
10	9.945 7	0.543 0
15	14.978 9	0.150 7
20	19.967 7	0.161 5
25	25.059 8	0.239 2
30	30.038 6	0.128 7
35	35.027 4	0.078 3
40	40.035 7	0.089 3
45	44.989 7	0.022 9
50	49.958 6	0.082 8

实际故障距离	各方法定位误差绝对值
实际故障距离	双端测距^[5]	BP^[10]	GA-BP^[9]	Transformer	本文方法
15 000	206.9	503.3	183.9	181.1	21.1
20 000	425.8	551.4	213.7	236.6	32.3
35 000	322.3	463.8	142.5	178.8	27.4
40 000	144.6	522.0	239.2	223.2	35.7
45 000	271.9	462.7	254.7	213.3	10.3

Cable fault location method based on APO-MVMD-Transformer

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