基于形态滤波的接地网拓扑检测

doi:10.19595/j.cnki.1000-6753.tces.201029

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Abstract The method of injecting current into the grounding grid to find the peak of surface magnetic induction intensity is often used to detect the grid structure in the existing researches, but this method can hardly identify weak signal and has poor anti-interference performance. In this paper, a method based on morphological filtration is proposed, which can obtain the topological structure of grounding grids by constructing complex morphological filters to extract boundary of the magnetic field. Firstly, based on the analysis of the distribution characteristics of the induced magnetic field, spatial analysis functions are introduced to describe the magnetic field on the surface. And then, morphic erosion and dilation methods are used to filter the original data to eliminate random noise and abnormal data. Finally, according to the connectivity characteristics of grid connectivity, watershed algorithm is used to extract the topology of grounding grids. Simulation and experimental result shows that this method can effectively identify the grounding grids from weak magnetic field data, and it is robust to noise and interference.

Key words： Morphological filtration grounding grids topology magnetic field watershed algorithm

Received: 14 August 2020

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TM86

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	Articles by authors
	Wang Wendong
	Hu Xuquan
	Xu Zhengyu
	Wang Haowen
	Fu Zhihong

Cite this article:

Wang Wendong,Hu Xuquan,Xu Zhengyu等. Topology Detecting Method of Grounding Grids Based on Morphological Filtration[J]. Transactions of China Electrotechnical Society, 2021, 36(17): 3685-3692.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.201029 OR https://dgjsxb.ces-transaction.com/EN/Y2021/V36/I17/3685

[1] 张波, 何金良, 曾嵘. 电力系统接地技术现状及展望[J]. 高电压技术, 2015, 41(8): 2569-2582.
Zhang Bo, He Jinliang, Zeng Rong.State of art and prospect of grounding technology in power system[J]. High Voltage Engineering, 2015, 4l(8): 2569-2582.
[2] 郭蕾, 古维富, 刘彬, 等. 杆塔接地装置的冲击阻抗建模及应用[J]. 电工技术学报, 2020, 35(10): 2239-2247.
Guo Lei, Gu Weifu, Liu Bin, et al.Impulse impedance modeling and application of tower grounding device[J]. Transactions of China Electrotechnical Society, 2020, 35(10): 2239-2247.
[3] 梁营玉, 许冠军, 李武林, 等. 柔性直流换流站对传统选相方法的影响分析及对策[J]. 电工技术学报, 2020, 35(1): 201-212.
Liang Yingyu, Xu Guanjun, Li Wulin, et al.Influence of the integration of MMC-HVDC station on traditional phase selection method and the countermeasure[J]. Transactions of China Electrotechnical Society, 2020, 35(1): 201-212.
[4] 滕予非, 李小鹏, 林圣, 等. 特高压直流系统接地极线路阻抗监视系统适应性研究[J]. 电工技术学报, 2019, 34(19): 4154-4161.
Teng Yufei, Li Xiaopeng, Lin Sheng, et al.Adaptability analysis of fault supervision system for long electrode line of UHVDC[J]. Transactions of China Electrotechnical Society, 2019, 34(19): 4154-4161.
[5] 刘文军, 仇彦军, 孙立臣. 500kV输电线路杆塔接地网不同环境下优化降阻方案研究[J]. 电力系统保护与控制, 2018, 46(13): 98-106.
Liu Wenjun, Chou Yanjun, Sun Lichen.Research on resistance reducing scheme optimization of 500kV transmission line tower grounding grid in different environments[J]. Power System Protection and Control, 2018, 46(13): 98-106.
[6] 方乙君, 柳松, 王雄文, 等. 沿海地区变电站腐蚀现状及防腐措施研究[J]. 电气技术, 2018, 19(12): 97-99, 102.
Fang Yijun, Liu song, Wang Xiongwen, et al. Study on corrosion status and anti-corrosion measures of substations in coastal areas[J]. Electrical Engineering, 2018, 19(12): 97-99, 102.
[7] DL/T 1532-2016, 接地网腐蚀诊断技术导则[S]. 2016.
[8] 贺家慧. 基于介质频散的接地网腐蚀诊断方法研究[D]. 武汉: 华中科技大学, 2012.
[9] 刘洋. 变电站接地网缺陷诊断方法和技术的研究[D]. 保定: 华北电力大学, 2008.
[10] 刘洋, 江明亮, 崔翔. 变电站接地网导体与网格结构探测方法[J]. 电工技术学报, 2013, 28(5): 167-173.
Liu Yang, Jiang Mingliang, Cui Xiang.Detecting method of conductors and mesh structure of substation's grounding grids[J]. Transactions of China Electrotechnical Society, 2013, 28(5): 167-173.
[11] 杨帆, 代锋, 姚德贵, 等. 基于最小二乘QR分解算法的接地网磁场重构方法及应用[J]. 电工技术学报, 2016, 31(5): 184-191.
Yang Fan,Dai Feng, Yao Degui, et al.Least square QR factorization arithmetic based magnetic field reconstruction for grounding grid and its application[J]. Transactions of China Electrotechnical Society, 2016, 31(5): 184-191.
[12] Souza F A A, Neto T R F, Magalhães F R P, et al. Predicting the grounding topology based on grounding impedance and the pattern recognition framework: a case study on one to four ground rods in straight line[J]. IEEE Transactions on Power Delivery, 2017, 32(4): 1748-1757.
[13] 张瑞强, 何为, 李羿, 等. 基于正逆问题分析方法的变电站接地网研究综述[J]. 中国电机工程学报, 2014, 34(21): 3548-3560.
Zhang Ruiqiang, He Wei, Li Yi, et al.Studies on substation ground grids from the perspective of primary and inverse problems[J]. Preceedings of the CSEE, 2014, 34(21): 3548-3560.
[14] 王晓宇, 何为, 杨帆, 等. 基于微分法的接地网拓扑结构检测[J]. 电工技术学报, 2015, 30(3): 73-78, 89.
Wang Xiaoyu, He Wei, Yang Fan, et al.Topology detection of grounding grids based on derivative method[J]. Transactions of China Electrotechnical Society, 2015, 30(3): 73-78, 89.
[15] Fu Zhihong, Song Siyu, Wang Xiujuan, et al.Imaging the topology of grounding grids based on wavelet edge detection[J]. IEEE Transactions on Magnetics, 2018, 54(4): 1-8
[16] 陶兴龙. 数学形态学和分形理论在图像去噪和边缘提取中的应用[D]. 南京: 南京信息工程大学, 2013.
[17] 向川, 王惠, 史鹏飞,等. 基于改进脉冲耦合神经网络模型的真空电弧燃烧过程研究[J]. 电工技术学报, 2019, 34(19): 4028-4037.
Xiang Chuan, Wang Hui, Shi Pengfei, et al.Research on the combustion process of vacuum arc based on an improved pulse coupled neural network model[J]. Transactions of China Electrotechnical Society, 2019, 34(19): 4028-4037.
[18] 齐郑, 李志, 张首魁, 等. 基于复合结构元素的新型自适应形态滤波器设计[J]. 电力系统保护与控制, 2017, 45(14): 121-127.
Qi Zheng, Li Zhi, Zhang Shoukui, et al.Design of a new adaptive morphological filter based on composite structure elements[J]. Power System Protection and Control, 2017, 45(14): 121-127.
[19] 周余涵, 张哲, 韩杰祥, 等. 基于开-闭滤波和多分辨形态梯度的直流线路纵联保护新原理[J]. 中国电机工程学报, 2020, 40(6): 1897-1906.
Zhou Yuhan, Zhang Zhe, Han Jiexiang, et al.A novel pilot protection based on open-close filtering and multi-resolution morphological gradient operators for HVDC transmission line[J]. Preceedings of the CSEE, 2020, 40(6): 1897-1906.
[20] 周凯, 黄永禄, 谢敏, 等. 短时奇异值分解用于局放信号混合噪声抑制[J]. 电工技术学报, 2019, 34(11): 2435-2443.
Zhou Kai, Huang Yonglu, Xie Min, et al.Mixed noises suppression of partial discharge signal employing short-time singular value decomposition[J]. Transactions of China Electrotechnical Society, 2019, 34(11): 2435-2443.
[21] 余烨, 李冰飞, 张小魏, 等. 面向RGBD图像的标记分水岭分割[J]. 中国图象图形学报, 2016, 21(2): 145-154.
Yu Ye, Li Bingfei, Zhang Xiaowei, et al.Marked watershed segmentation algorithm for RGBD images[J]. Journal of Image and Graphics, 2016, 21(2): 145-154.
[22] Vincent L, Soille P.Watersheds in digital spaces: an efficient algorithm based on immersion simulations[J]. IEEE Transactions on Pattern Analysis and Machine Intelligence, 1991, 13(6): 583-598.