The Application of JSInSAR Technology in Substation and Power Tower Deformation Monitoring

doi:10.11930/j.issn.1004-9649.201803007

Abstract

Abstract: The deformation of substations and power towers could threaten the secure transmission of electric power. Due to the sparsity of distributed monitoring points, the traditional PSI technology is incapable of achieving high-precision measurement in practice. Alternatively, this paper adopted the JSInSAR technology to obtain the millimeter-scale deformation monitoring results of two 500 kV substations and surrounding power towers in Jianshan and Jiujiang areas of Chengdu, and analyzed their time-series deformation trends from both vertical and horizontal dimensions, based on 18 TerraSAR-X Strimap high-resolution image data. Simulation results showed that the spatial density of deformation monitoring points with JSInSAR technology is 4 times larger than those with the traditional PSI technology; two substations are in safe operating stations, with a relatively small vertical and horizontal cumulative deformation difference, which confirms the superiority of JSInSAR technology on increasing the spatial density of deformation monitoring points and obtaining more abundant deformation details. Compared with traditional ground-based monitoring methods, the space density of the deformation monitoring points as well as its accuracy with JSInSAR technology are higher, suggesting broad application prospects in power infrastructure monitoring of JSInSAR technology.

Key words: JSInSAR, PSI, deformation measurement, substation, power tower

CLC Number:

TM853

XIAO Xingquan, ZHANG Jinbao, JIAO Yifei, Chen Zhongguo, XIONG Xiaoman, HUANG Shijing, JIAO Min. The Application of JSInSAR Technology in Substation and Power Tower Deformation Monitoring[J]. Electric Power, 2018, 51(11): 45-52.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.201803007

https://www.electricpower.com.cn/EN/Y2018/V51/I11/45

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