双回路单侧电缆T接直线杆引下方法的研究

Study on the Down-leading at“ T” Connection Straight Line Pole for the One-Side Cable in the Double-Circuit

针对常规双回路单侧电缆T接耐张杆引下方法存在的问题,通过对T接引下方式的分析,提出了一种双回路单侧电缆T接直线杆引下方法,并依托实际工程,考虑绝缘配合及防雷保护的要求,对该方法涉及直线杆的杆头及横担布置进行了优化设计。通过比较分析该直线杆引下方法与常规方法,指出该方法具有总体材料量及费用较少且杆塔占地面积较小的优点,建议在实际工程中酌情替代耐张杆使用。

In view of the problems existing in the conventional down-leading method which uses' T connection' tension pole, and based on an analysis of the down-leading methods of' T connection', this paper proposes a new down leading method which uses the straight line pole. According to the requirements of the actual project as well as the requirement for the insulation coordination and lightning protection, the head and cross arm arrangement of the straight line pole involved with the method as proposed is optimized. Comparison of this method with the conventional one demonstrates the method's advantages of less material need, low cost and smaller space.