摘要
电力机车受电弓从接触网获取单相工频交流电,整流电路将交流电变成直流电,所产生的的谐波成分会对有关电路、通信系统等部件带来不利影响。谐波的高低所造成的影响不同,低谐波会影响到电力系统的正常运行,高谐波会直接干扰通信系统。因此,对谐波进行准确分析并制定相应的防治措施具有重要的现实意义。以交直型(SS4G型)电力机车为分析对象,对基于小波变换的谐波检测方法进行了描述,基于小波变换的谐波检测方法进行全面细致的分析和说明,并全面介绍了在MATLAB环境下电力机车谐波电流的相关情况。
The power of electric locomotive is large,and the harmonics generated by the rectifier circuit will adversely affect the track circuit,communication system and other components after the injection of the contact network.The low harmonics will affect the normal operation of the power system,and the high harmonics will directly interfere with the communication system.Therefore,it is of great practical significance to analyze harmonics accurately and formulate corresponding preventive measures.To make straight(SS4G type electric locomotive as the analysis object,the harmonic detection method based on wavelet transform is described,using the minimum description length principle to determine the best harmonic wavelet function and wavelet algorithm programming in MATLAB environment.
作者
薛振洲
Xue Zhenzhou(Xi'an railway vocational and technical college traction power system Xi'an Shaanxi,710026)
出处
《电子测试》
2019年第15期79-80,89,共3页
Electronic Test
