摘要
输电线路噪声生态污染控制是特高压直流输电亟待解决的关键问题之一,为此,研究特高压直流输电线路噪声生态污染控制算法。采用BPA经验公式获取特高压直流输电线路导线表面最大电场,结合导线半径、导线分裂数和计算点与正极间距离,计算特高压直流输电线路可听噪声,在此基础上,采用基于鸡群算法(CSO)优化阈值的提升小波变换去噪算法,获取小波分解系数,并搜寻最优阈值,然后提升小波逆变换得到重构噪声信号,完成特高压直流输电线路可听噪声生态污染控制。
Transmission line noise ecological pollution control is one of the key problems to be solved in UHVDC transmission.Therefore,the control algorithm of UHVDC transmission line noise ecological pollution is studied.The BPA empirical formula is used to obtain the maximum electric field on the surface of UHVDC transmission line.Combined with the wire radius,the number of wire splits and the distance between the calculation point and the positive pole,the audible noise of UHVDC transmission line is calculated.On this basis,the lifting wavelet transform denoising algorithm based on the chicken colony algorithm(CSO)optimal threshold is used to obtain the wavelet decomposition coefficient and search for the optimal threshold.Then the reconstruction noise signal is obtained by lifting the wavelet inverse transform,and the audible noise ecological pollution control of UHVDC transmission line is completed.The experimental results show that the proposed algorithm can accurately calculate the audible noise,and the effect of noise pollution control is good.The quantitative evaluation indexes of noise pollution control,such as signal-to-noise ratio,amplitude error,waveform similarity coefficient,are better than the comparison algorithm.
作者
黄振宁
Huang Zhenning(State Grid Shandong Electric Power Company Equipment Management Department, Jinan 250000, China)
出处
《环境科学与管理》
CAS
2020年第9期81-85,共5页
Environmental Science and Management
关键词
特高压
噪声
生态污染
控制
去噪
UHV
noise
ecological pollution
control
noise reduction
作者简介
黄振宁(1982-),男,硕士,高级工程师,研究方向:电力技术。
