Abstract：To detect the occurrence of high impedance fault (HIF) in distribution networks, a new detection method based on variational mode decomposition (VMD) and graph signal indices is proposed. Firstly, a series of intrinsic mode functions (IMFs) are obtained from transient zero sequence currents by VMD. Secondly, kurtosis calculation is performed to select most sensitive IMFs which reflect HIF transient variables. Thirdly, the graph indices of selected IMFs are calculated as criteria for classification. Lastly, the random forest is used to evaluate and classify the fault indices for HIF detection. The proposed method can accurately distinguish HIF and switching events (load switching and capacitor switching) in PSCAD/EMTDC.
肖启明, 郭谋发. 基于变分模态分解与图信号指标的配电网高阻接地故障识别算法[J]. 电气技术, 2021, 22(5): 50-55.
XIAO Qiming, GUO Moufa. High impedance fault detection algorithm based on variational mode decomposition and graph signal indices in distribution networks. Electrical Engineering, 2021, 22(5): 50-55.
[1] ADAMIAK M, WESTER C, THAKUR M, et al.High impedance fault detection on distribution feeders[J]. Protection & Control Journal, 2006(4): 25-31. [2] 刘炳南, 郭谋发, 陈永往. 基于KNN的配电网高阻接地故障识别[J]. 电气技术, 2019, 20(1): 18-23. [3] 詹启帆, 李天友, 蔡金锭. 配电网高阻接地故障检测技术综述[J]. 电气技术, 2017, 18(12): 1-7. [4] 金能, 梁宇, 邢家维, 等. 提升配电网线路保护可靠性的远方保护及其与就地保护优化配合方案研究[J]. 电工技术学报, 2019, 34(24): 5221-5233. [5] 张健磊, 高湛军, 陈明, 等. 考虑复故障的有源配电网故障定位方法[J/OL]. 电工技术学报: 1-12[2020-10-11]. https://doi.org/10.19595/j.cnki.1000-6753.tces.200487. [6] 龙毅, 欧阳金鑫, 熊小伏, 等. 基于零序功率变化量的配电网单相高阻接地保护[J]. 电工技术学报, 2019, 34(17): 3687-3695. [7] KAVI M, MISHRA Y, VILATHGAMUWA M D.High- impedance fault detection and classification in power system distribution networks using morphological fault detector algorithm[J]. IET Generation Transmission & Distribution, 2018, 12(15): 3699-3710. [8] NEZAMZADEH-EJIEH S, SADEGHKHANI I.HIF detection in distribution networks based on Kullback- Leibler divergence[J]. IET Generation Transmission & Distribution, 2019, 14(1): 29-36. [9] SHAHRTASH S M, SARLAK M.High impedance fault detection using harmonics energy decision tree algorithm[C]//IEEE 2006 International Conference on Power System Technology, 2006: 1-5. [10] SOHEILI A, SADEH J, BAKHSHI R.Modified FFT based high impedance fault detection technique considering distribution nonlinear loads: simulation and experimental data analysis[J]. International Journal of Electrical Power & Energy Systems, 2018, 94: 124-140. [11] 张君琦, 杨帆, 郭谋发. 配电网高阻接地故障时频特征SVM分类识别方法[J]. 电气技术, 2018, 19(3): 37-43. [12] LALA H, KARMAKAR S.Detection and experimental validation of high impedance arc fault in distribution system using empirical mode decomposition[J]. IEEE Systems Journal, 2020, 14(3): 3494-3505. [13] WANG Xiaowei, GAO Jie, WEI Xiangxiang, et al.High impedance fault detection method based on variational mode decomposition and Teager-Kaiser energy operators for distribution network[J]. IEEE Transactions on Smart Grid, 2019, 10(6): 6041-6054. [14] MOHAMMADNIAN Y, AMRAEE T, SOROUDI A.Fault detection in distribution networks in presence of distributed generations using a data mining-driven wavelet transform[J]. IET Smart Grid, 2019, 2(2): 163-171. [15] 高艺源, 于德介, 王好将, 等. 基于图谱指标的滚动轴承故障特征提取方法[J]. 航空动力学报, 2018, 33(8): 2033-2040. [16] 许晔, 郭谋发, 陈彬, 等. 配电网单相接地电弧建模及仿真分析研究[J]. 电力系统保护与控制, 2015, 43(7): 57-64.
2021, Vol. 22 
