The existing tower settlement monitoring technology is difficult to realize the accurate settlement monitoring of multi-tower and large range. Therefore, the online monitoring technology of the uneven settlement of the tower of the DC grounded pole line is designed. The overall scheme of online monitoring of a single tower is optimized, the laser equipment is used as the main tool of settlement monitoring and ranging, a geometric shape is built together with the tower to be measured and the reflection plate, and the settlement changes of the tower support are obtained through calculation. Laser equipment is deployed, laser wave is demodulated, the signal is collected by grating fiber, settlement data is calculated according to the strain of transmission lines of tower and tower, and signal conversion and transmission are completed through a wireless network. Finally, the influence of fiber grating is corrected according to the temperature change, and the non-uniform settlement of the tower and tower of the ground pole line of DC transmission is realized through online monitoring. The technology is applied to a certain line tower for testing, and the results are compared with the results obtained by the BOFDA demodulation instrument. In the case of multiple DC transmission ground pole lines, the error between the results obtained by the designed non-uniform settlement monitoring technology and the theoretical results is less than ±1mm, indicating that the monitoring results obtained by the designed technology are more accurate.
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Fan et al. (2024) studied this question.
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