[1] [1] LI B, GUO B H. Code for field handover test of gas insulated metal enclosed switchgear:DL/T 618-2011[S].Beijing: National Energy Administration, 2011（in Chinese）.

[2] [2] GUO B H. Guide for field withstand voltage and insulation tests of gas insulated metal enclosed switchgear:DL/T 555-2004[S].Beijing: National Energy Administration,2004（in Chinese）.

[3] [3] WANG Zh W,KONG Y,DING W,et al. Composite optical fiber bring about remote sensitive to vibration of φ- OTDR[J]. Laser Technology, 2021, 45(4): 436-440（in Chinese）.

[4] [4] WANG Y, YUAN H, LIU X, et al. A comprehensive study of optical fiber acoustic sensing[J]. IEEE Access, 2019, 7:85821-85837.

[5] [5] ZUO J, ZHANG Y, XU H, et al. Pipeline leak detection technology based on distributed optical fiber acoustic sensing system[J]. IEEE Access, 2020, 8: 30789-30796.

[6] [6] WU M Sh. High performance optical fiber quasi distributed acoustic sensor for hydrophone applications[D]. Shanghai: Shanghai Jiaotong University, 2020: 32-45(in Chinese).

[7] [7] GU J F, LU B, YANG J Q, et al. Distributed acoustic sensing based on multi-core fiber[J]. Acta Optica Sinica, 2021, 41(7):0706003(in Chinese).

[8] [8] YANG H W, CHEN Y M, PENG J, et al. GIS AC withstand voltage test development trend[J]. Yunnan Electric Power, 2018, 46(3): 54-57(in Chinese).

[9] [9] ZHONG Y, CHEN Y, ZHANG Ch N, et al. Analysis of management and control of keypoints of GIS equipment installation and test in substation[J]. Electric Engineering, 2020(17):103-105(in Chinese).

[10] [10] LONG X F. Analysis and research on breakdown mechanism of GIS equipment[J]. Science & Technology Information, 2017, 15(36): 65-67(in Chinese)

[11] [11] LI J H, CHE B, HAN X T, et al. Field impulse withstand test and partial discharge detection for ultra high voltage gas insulated switchgear equipment[J]. High Voltage Engineering, 2015, 41(11): 3659-3665(in Chinese).