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首页> 外文期刊>Electric power systems research >Magnetically Induced Swing Movement Of Overhead Power Line Conductors In A Transition Span Subsequent To An Initial Fault
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Magnetically Induced Swing Movement Of Overhead Power Line Conductors In A Transition Span Subsequent To An Initial Fault

机译：初始故障后过渡区间中架空电力线导体的磁感应摆动

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An initial electric fault can result in strong magnetic torque exerted on overhead power line conductors, which will make them swingand may bring them to close proximity or in contact with one another, causing a subsequent fault. Computer simulations have been developed for the analysis of the subsequent fault and presented in the authors' earlier work for level spans and inclined spans that are both of uniform power line construction. However, in practice, a power line topology may require a transition from one power line structure to another. Such a required transition can be realized by a transition span. In this paper, we present a dynamic analysis of swing movement of power line conductors in a transition span subsequent to an initial fault, to track the smallest distance between the conductors, which is an important factor useful for predicting the probability of the subsequent fault. The analysis is much more complex than that for level spans and inclined spans. To address the complexity, we employ coordinate system transformations and establish a common coordinate system, then make use of it in the dynamic analysis. Sample numerical results are presented, analyzed, and checked with the energy conservation law requirement.
机译：最初的电气故障可能会导致施加在架空电力线导体上的强磁转矩，这将使它们摆动并可能使它们紧密接近或彼此接触，从而导致后续故障。已经开发了用于模拟后续故障的计算机仿真，并在作者的早期工作中介绍了水平跨度和倾斜跨度，它们都是统一的电力线构造。但是，实际上，电源线拓扑可能需要从一种电源线结构过渡到另一种。这样的所需过渡可以通过过渡跨度来实现。在本文中，我们对动力线导体在初始故障之后的过渡跨度中的摆动运动进行了动态分析，以追踪导体之间的最小距离，这是有助于预测后续故障可能性的重要因素。分析要比水平跨度和倾斜跨度复杂得多。为了解决复杂性，我们采用坐标系转换并建立通用坐标系，然后在动态分析中使用它。给出了样本数值结果，进行了分析，并符合节能法的要求。

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