接地网瞬变电磁诊断的电力噪声抑制方法研究
Research on Power Noise Suppression Method for Transient Electromagnetic Diagnosis of Grounding Grid
DOI: 10.12677/JEE.2020.83010, PDF,   
作者: 李 波, 张林山, 曹 敏, 邹京希, 钱国超:云南电网有限责任公司电力科学研究院,云南 昆明;王浩文:长江师范学院,重庆;沈 映:云南电网有限责任公司红河供电局,云南 红河哈尼族彝族自治州;付志红:重庆大学,重庆
关键词: 瞬变电磁工频干扰叠加采样降噪Transient Electromagnetic Frequency Interference Superimposed on Sampling Noise Reduction
摘要: 作为新型的接地网缺陷诊断方法,瞬变电磁法可以为地网状态检测和故障诊断提供无损检测。运行中的电网存在较强的电磁噪声,对瞬变电磁信号形成干扰,降低了探测信号的可靠性。本文针对电网电磁噪声的特点,提出叠加采样法抑制工频高次谐波噪声的解决方案,并依据瞬变电磁信号的采样特点改进了传统叠加采样法,提高了方法对工频谐波的抑噪能力,实验验证了本文所提方案的噪声抑制效果。
Abstract: Transient electromagnetic methods can provide predictions and assessments for shallow geological hazards that compromise transmission projects. The electromagnetic noise of the power network causes interference to the transient electromagnetic signal, which reduces the reliability of the detection signal. In this paper, according to the characteristics of electromagnetic noise in the power grid, a solution is proposed to suppress the power frequency noise by using the superposition sampling method. According to the sampling characteristics of transient electromagnetic signals, the traditional superposition sampling method is improved and the noise suppression capability of the method is improved. The experiment proves the noise suppression effect of the proposed scheme.
文章引用:李波, 王浩文, 张林山, 沈映, 曹敏, 邹京希, 付志红, 钱国超. 接地网瞬变电磁诊断的电力噪声抑制方法研究[J]. 电气工程, 2020, 8(3): 83-90. https://doi.org/10.12677/JEE.2020.83010

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