摘要
传统方法未考虑雷电入射角特征,预测精度较低。为此,提出基于雷电入射角计算的输电线路跳闸故障预测研究。在获取入射角概率分布前提下,分别计算入射角不同时的输电线路暴露距离;运算相邻两个时刻所有雷区之间最有可能轨迹,建立优化模型;构建价值函数矩阵,利用匈牙利算法变换价值方阵,确定雷电发展的最佳路径;结合输电线暴露距离与雷电发展路径,通过雷电移动速度与半径变化系数得到跳闸故障预测公式。仿真实验证明,该方法可以准确预测出跳闸区域,虚警率较低,受环境干扰小,有助于及时采取应对措施,减少经济损失。
The traditional method does not consider the characteristics of lightning incident angle,so the prediction accuracy is low.Therefore,the trip fault prediction of transmission line based on the calculation of lightning incident angle is proposed.On the premise of obtaining the probability distribution of incident angles,the exposure distances of transmission lines with different incident angles are calculated respectively.It calculates that most probable track between all minefields at two adjacent time,and establishes an optimization model.The value function matrix is constructed,and the Hungarian algorithm is used to transform the value matrix to determine the best path of lightning development.Combining the exposure distance of transmission line with the development path of lightning,the trip fault prediction formula is obtained through the change coefficient of lightning moving speed and radius.Simulation experiments show that this method can accurately predict the trip area,it has low false alarm rate and little environmental interference,which is helpful to take timely measures and reduce economic losses.
作者
陈思彤
CHEN Sitong(Qujing Meteorological Bureau,Qujing 655000,China)
出处
《微型电脑应用》
2022年第7期124-126,共3页
Microcomputer Applications
关键词
雷电入射角
输电线路
跳闸故障
暴露距离
匈牙利算法
lightning incidence angle
transmission line
trip fault
exposure distance
Hungarian algorithm
