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电缆局放单端及双端行波定位原理python演示(附可运行程序和源码)

  • 2026-02-05 01:07:21
电缆局放单端及双端行波定位原理python演示(附可运行程序和源码)
程序基于行波法的电缆局部放电定位模拟演示,支持单端定位和双端定位两种模式,核心用于模拟电缆局放信号的生成、干扰叠加、脉冲时间检测及故障位置计算,可直观展示噪声、仪器误差对定位结果的影响,可用于电力电缆检测相关的仿真与学习。
1)可自定义电缆总长、缺陷位置、行波波速等核心参数,适配不同场景仿真;
2)能灵活调整脉冲幅度、振荡频率等波形参数,模拟不同形态局放脉冲信号;
3)可模拟白噪声干扰与仪器测量误差,直观呈现定位误差来源与影响。
算法与波形生成函数实现
(1)定位算法(x为故障点距离远端的距离)
•单端定位算法:基于「直达波-反射波时间差」,公式为 x = 电缆总长 - (波速×时间差)/2,通过直达波(t1)和反射波(t2)的时间差计算故障位置;
•双端定位算法:基于「两端接收时间差+电缆总长」,公式为 x = 电缆总长 - (波速×(远端时间-近端时间) + 电缆总长)/2。
(2)波形生成逻辑
•单端波形:计算理论直达波时间(t1_true)和反射波时间(t2_true),构造高斯包络+正弦振荡的纯净脉冲,叠加0轴分布高斯噪声,识别带噪波形的峰值位置(t1_detected/t2_detected),并叠加仪器测量误差;
•双端波形:计算近端A(t_a_true)和远端B(t_b_true)的理论接收时间,生成两端独立的带噪脉冲,识别各自峰值位置,模拟双端同步检测逻辑。

具体详见视频:

本文配套源码已免费分享(见留言区),仅限个人学习使用,禁止任何商业用途,请勿将源码用于商业项目、二次售卖或商业开发,感谢理解与配合~

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  1. CONNECT:[ UseTime:0.000751s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000859s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.002983s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.007721s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000684s ]
  6. SELECT * FROM `set` [ RunTime:0.001405s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000528s ]
  8. SELECT * FROM `article` WHERE `id` = 471541 LIMIT 1 [ RunTime:0.001668s ]
  9. UPDATE `article` SET `lasttime` = 1770500689 WHERE `id` = 471541 [ RunTime:0.014804s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.004202s ]
  11. SELECT * FROM `article` WHERE `id` < 471541 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.006033s ]
  12. SELECT * FROM `article` WHERE `id` > 471541 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.007597s ]
  13. SELECT * FROM `article` WHERE `id` < 471541 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.008807s ]
  14. SELECT * FROM `article` WHERE `id` < 471541 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.032665s ]
  15. SELECT * FROM `article` WHERE `id` < 471541 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.022880s ]
0.185258s