线夹回转式导线阻尼间隔棒防舞模型与评估方法

线夹回转式导线阻尼间隔棒是一种新器具,由于其应用的时间短,且受类型、数量、安装位置等因素的影响,还未形成完善的防舞效果评价方法.考虑这些影响因素,且为避免复杂的矢量运算,利用拉格朗日方程推导导线阻尼间隔棒体系覆冰时的导线运动微分方程组,计算了不同类型间隔棒和不同安装位置条件下导线舞动的时程响应;提出基于导线阻尼间隔棒设计参数和模糊数学理论的防舞效果评估方法.算例分析结果表明：线夹回转式导线阻尼间隔棒具有较好的防舞效果.此外,由于子导线的扭转角也会影响舞动防御的效果,故在此基础上提出增大导线扭转角的改进方法.

Anti-Galloping Model and Evaluation Method of Rotary Clamp Conductor Spacer-Damper

The rotary clamp spacer-damper is a new hardware. And because of its short time in application and the influence of style, amount and installation position, it is difficult to put forward a desirable evaluation method for its anti- galloping effect. With considering these factors, and in order to avoid complicated vector operation, the differential equations of conductor motion were derived from the Lagrange equation, when the conductor spacer-damper was covered by ice; and the time-responses of conductor galloping under the conditions of different kinds of spacers and different installation positions were calculated. Then, an evaluation method of anti-galloping effect was proposed based on the designing parameters of the conductor spacer-damper and the fuzzy mathematics theory. The analytic results show that the rotary clamp conductor spacer-damper has a better effect of anti-galloping. In addition, since the torsion angle of the sub-conductor also could affect the galloping prevention effect, therefore, an improved method of increasing the conductor torsion angle was put forward.