System for measuring sag of overhead transmission line

Abstract

The invention discloses a system for measuring sag of an overhead transmission line. The system is that the tension force of a suspension point of the transmission line is measured under the known conductor specific load so as to calculate the sag. The system ahs the characteristic of being simple and accurate to calculate; when in the actual measurement, the measurement of the tension force of the transmission line is avoided the limitation from an intervisibility condition, and therefore, the sag of the transmission line can be accurately measured under fog and other conditions with low visibility; in addition, the measurement below the line is achieved, namely, the system can be operated close to a pole and a tower below the power transmission line, and therefore, the potential risk in operation can be reduced; meanwhile, the system structure is simple, one or a plurality of groups of transmission lines can be synchronously measured, the data can be independently acquired and calculated, and therefore, the workload of workers can be decreased.

Description

technical field [0001] The invention belongs to the technical field of transmission line measurement, and more specifically relates to a system for measuring sag of overhead transmission lines. Background technique [0002] The sag of overhead transmission line is the main indicator of line design and operation, which is related to the operation safety of the line, so it must be controlled within the scope specified in the design. [0003] At present, the methods for measuring the sag of transmission lines mainly include equal length method, different length method, and angle method. Although the angle method can be implemented on the ground using theodolite, it also needs to measure the data under the condition of line-of-sight. Therefore, in climates or areas that are prone to fogging in winter or in some mountainous areas, the visibility is low, and the above-mentioned measurement method becomes very difficult or even impossible to implement, which will undoubtedly cause...

AI Technical Summary

Problems solved by technology

[0003] At present, the methods for measuring the sag of transmission lines mainly include equal length method, different length method, and angle method. Although the angle method can be implemented on the ground using theodolite, it also needs to measure the data under the condition of visibility.

Therefore, in winter or in some mountainous climates or areas prone to fogging, the visibility is low, and the above-mentioned measurement method becomes very difficult or even impossible to implement, which will undoubtedly cause impact and loss on users and construction units

[0004] In addition, high-altitude operations such as climbing poles for observation during the construction of wires will increase the danger of the work of the staff.

Moreover, for the accuracy of the measurement, it is necessary to obtain enough measurement data, and each group of transmission lines will be measured for a long time, which will increase the workload of the electric power workers

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