引用本文: | 龚 彧,赵 峰,李冬华,等.基于压缩感知的架空线路舞动波形重构方法[J].电力系统保护与控制,2021,49(9):97-104.[点击复制] |
GONG Yu,ZHAO Feng,LI Donghua,et al.Method for reconstructing galloping waveforms of overhead lines based on compressed sensing[J].Power System Protection and Control,2021,49(9):97-104[点击复制] |
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摘要: |
针对高压输电线路时常发生的线路舞动灾害,提出了一种基于压缩感知的架空线路舞动波形重构方法。传统的基于传感器的舞动监测系统需要一定数量的传感器才能确保重构波形的准确度,而过多监测节点会增加输电线路的载荷,改变其力学特性。针对这一问题,将线路舞动数学模型进行稀疏变化,构建便于传感器布置的测量矩阵,并运用正交匹配追踪(Orthogonal Matching Pursuit, OMP)算法。通过线路中有限几个信息感知节点重构舞动波形,降低了感知节点布置过多对舞动信息的干扰。在Matlab环境下进行仿真演示,结果表明:对于不同幅值、档距、频率、半波数的线路舞动波形的重构误差均可控制在5%以下。 |
关键词: 无线传感器 压缩感知 线路舞动 正交匹配追踪算法 输电线路 |
DOI:DOI: 10.19783/j.cnki.pspc.201476 |
投稿时间:2020-11-30修订日期:2021-03-08 |
基金项目:国家自然科学基金项目(51577086);江苏省高校科研重大项目(19KJA510012) |
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Method for reconstructing galloping waveforms of overhead lines based on compressed sensing |
GONG Yu1,ZHAO Feng1,LI Donghua1,CHEN Wen1,LI Zuming2,LIU Jianguo3 |
(1. Yancheng Power Supply Company, Yancheng 224005, China;
2. School of Electric Power, Nanjing University of Engineering, Nanjing 210095, China;
3. School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China) |
Abstract: |
Galloping disasters frequently occur in high-voltage transmission lines. A method for reconstructing the galloping waveforms of overhead lines based on compressed sensing is proposed. Traditional sensor-based galloping monitoring systems need to be deployed in sufficient numbers to ensure the accuracy of the reconstructed waveform. Too many monitoring nodes will increase the load on the transmission line and change its mechanical characteristics. In response to this problem, the mathematical model of line galloping is sparsely changed, a measurement matrix that is convenient for sensor placement is constructed, and an Orthogonal Matching Pursuit (OMP) algorithm is used. The dancing waveform can be reconstructed through a limited number of information sensing nodes in the line. This reduces the interference of too many sensing nodes on the dancing information. A simulation is carried out in the Matlab environment, and the results show that the reconstruction error of the line galloping waveforms of different amplitudes, spans, frequencies, and half-wave numbers can be controlled to below 5%.
This work is supported by the National Natural Science Foundation of China (No. 51577086) and the Major Scientific Research Projects of Universities and Colleges in Jiangsu Province (No. 19KJA510012). |
Key words: wireless sensor compressed sensing line galloping orthogonal matching pursuit algorithm transmission lines |