架空导线蠕变的自动测试技术

Automatic test technique of overhead electrical conductors' creeping

架空导线的蠕变特性可以正确预计输电线路的孤垂变化,是输变电线路设计和施工的重要依据。本文讨论了架空导线的蠕变特性,提出基于DSP和虚拟仪器技术的蠕变测试系统的原理及方法,实现了架空导线蠕变试验的自动化。结合CAN总线技术使系统具有远程监控、组建测试网络的特点。实践证明系统具有较高的稳定性、实时性和可靠性,为架空导线蠕变特性的研究提供了可靠的试验数据。

Creep deformation characteristic of overhead electrical conductors is an important guideline to design and construction of power supply and transformation, which is to predict sagging variation of transmission line correctly. Theoretically, this paper discusses creep deformation characteristic, then presents the principle and method of creep deformation test system based on DSP and virtual instrument technology, which realizes the test automation. By combining with CAN bus technology, the system has the characteristic of remote monitor and building test network. The practice has proved that the system has better stability, real time and reliability, which provides trial data for creep deformation characteristic research.