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发明公开
CN106570651A 一种输电线路绝缘子污闪风险评估方法 无效 - 驳回

一种输电线路绝缘子污闪风险评估方法
摘要：
本发明公开了一种输电线路绝缘子污闪风险评估方法，该方法包括如下步骤：1)通过气象预警系统得到气象数据，采用BP神经网络算法，计算出输电线路绝缘子的盐密值；2)根据计算得到的盐密值和杆塔所在地的气象数据，计算该盐密下绝缘子的50％污闪电压；3)将输电线路划分为Num个区间，并对每个区间分别进行输电线路绝缘子污闪风险，最后计算整个输电线路的绝缘子污闪风险。与现有技术相比，该方法基于历史记录的气象和盐密监测的数据，利用提供给定气象条件进行输电线路的污闪概率评估，进而没有必要进行实时在线污秽监测，不用在输电线路上大量安装污秽在线监测装置，可以节省设备成本。
摘要（英）：

The invention discloses a method for evaluating a pollution flashover risk of an insulator of a power transmission line. The method comprises the following steps of (1) obtaining meteorological data through a meteorological early-warning system and calculating a salt density value of the insulator of the power transmission line by adopting a BP neural network algorithm; (2) calculating 50% of pollution flashover voltage of the insulator under the salt density according to the calculated salt density vale and the meteorological data of a tower location; and (3) dividing the power transmission line into Num intervals, carrying out pollution flashover risk evaluation of the insulator of the power transmission line on each interval and finally calculating the pollution flashover risk of the insulator of whole power transmission line. Compared with the prior art, the method has the advantages that pollution flashover risk evaluation of the power transmission line is carried out by providing given meteorological conditions on the basis of meteorological and salt density monitoring data of historical records, so that real-time online contamination monitoring is not needed, a lot of online contamination monitoring devices do not need to be arranged on the power transmission line and the equipment cost can be reduced.

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