220kV双分裂导线粘连影响及检测分析

针对一起220 kV斜排列双分裂导线在运行中出现的导线粘连现象,为评估导线粘连后对周围环境的影响,研究导线粘连的反事故技术措施,提出一种检测方法,分别从电磁场强度、导线温度、噪声分贝值等方面进行了实地测量与分析。通过介绍导线粘连的危害和影响,结合理论计算分析双分裂导线粘连的原因,并通过MATLAB仿真计算,验证负荷电流骤增是导线粘连的主因;结合线路电流幅值日曲线对所测数据进行分析,提出加装间隔棒、降低电流负荷、增大导线间距等防治措施。

The Influence and Detection Analysis of 220 kV Twin Bundle Adhesion

In order to evaluate the effects of adhesive conductors on the surrounding environment, anti-accident measures of the conductor adhesion were studied with a case of conductor adhesion in the 220 kV twin bundle. A kind of detection methods was proposed, and the field survey and analysis were completed from the aspects of the electric field, magnetic field values,conductor temperature and noise decibel values. The harm and influence of conductor adhesion were introduced, and causes of the twin bundle adhesion were analyzed based on theoretical calculation. The main reason of the conductor adhesion was verified to be the load current surge with MATLAB simulation. The test data were analyzed with the curve of line current, and countermeasures were proposed such as adding interval rods, reducing the current load and increasing conductor spacing.