Electric transmission line conductor sag measuring method based on angle sensor
An angle sensor and transmission line technology, which is applied in measurement devices, mechanical measurement devices, instruments, etc., can solve the problems of difficult measurement of model parameters, and achieve the effect of automatic safety monitoring, low cost, and significant use value.
Inactive Publication Date: 2013-09-11
徐州宇飞电力科技有限公司
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The unequal-length template method, the method of measuring the inner line height of the file, and the analytical method all need some mathematical models, but in the case of a complex environment, these model parameters are not easy to measure
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[0087] Use the inclination angle sensor at one end of the transmission line conductor to obtain the wind deflection angle at one end of the transmission line conductor:
[0088]
[0089] The span between the two suspension points A and B is L=300m, and the two suspension points A and B are at the same height, that is, the height difference h=0;
[0090] According to the wind deflection angle θ of the transmission line conductor A Calculate the sag value f of the overhead transmission line conductor with the mathematical model of the transmission line conductor sag in the expert software,
[0091] f=(L / 4)(tanθ A +h / L)=10.0071m;
[0092] The sag detected this time is 10.0071m. According to experience, this value is within the safe range. Wait for 2 hours and restart the next detection cycle.
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The invention discloses an electric transmission line conductor sag measuring method based on an angle sensor. The method comprises the steps that (1) the dip angle type angle sensor is installed so that the sag of an electric transmission line conductor can be measured; (2) after a work signal sent by a monitoring center is received by a monitoring extension set, windage yaw dip angle data of the two ends of the electric transmission line conductor are collected through the dip angle type angle sensor installed on an insulator of a site tower and the obtained windage yaw dip angle data are sequentially transmitted to the monitoring extension set and the monitoring center; (3) a sag value f of the electric transmission line conductor is calculated according to expert software embedded in the monitoring center and the windage yaw dip angle data of the electric transmission line conductor; (4) whether the sag value f is in a safe range or not is judged according to the sag value f of the electric transmission line conductor. According to the electric transmission line conductor sag measuring method based on the angle sensor, the size of the sag of the electric transmission line conductor can be rapidly detected and the overhead line accident caused by extremely large or small sag of the conductor is prevented.
Description
technical field [0001] The invention belongs to the technical field of on-line monitoring of power systems, and relates to a method for measuring sag of a transmission line conductor based on an angle sensor. Background technique [0002] Conductor sag of transmission lines is the main indicator of transmission line design and operation, and the problem of observing conductor sag will be encountered in the operation and construction of high-voltage lines. [0003] The sag measurement of transmission line conductors plays a very important role in the safe operation of control lines, especially after a period of time when new lines are erected, the conductors will sag to varying degrees. For safety, it is very important to monitor the sag of transmission line conductors. Necessary, so as to provide reliable data for the safe operation of high-voltage lines. Among them, if the sag of the transmission line conductor is too large, it may be under the action of electrodynamic for...
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IPC IPC(8): G01B5/02
Inventor 黄新波张亚维
Owner 徐州宇飞电力科技有限公司
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