| 基于小波变换的直流主动配电网电压波动源辨识 |
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| 引用本文： | 张宸宇,邓凯,史明明,郑建勇,缪惠宇. 基于小波变换的直流主动配电网电压波动源辨识[J]. 电力工程技术, 2017, 36(4): 21-24,30 |
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| 作者姓名： | 张宸宇 邓凯 史明明 郑建勇 缪惠宇 |
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| 作者单位： | 国网江苏省电力公司电力科学研究院,江苏 南京,211103;国网江苏省电力公司检修分公司,江苏 南京,210000;东南大学电气工程学院,江苏 南京,210096 |
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| 基金项目： | 国家电网公司科技项目(基于全网谐波监测数据的干扰源分析技术研究与应用) |
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| 摘 要： | 由于直流主动配电网接入了大量分布式电源,直流母线的电压问题主要包括直流母线的电压波动,直流母线的电压暂降和直流母线的电压中断等。本文介绍了小波变换的基本思想,建立不同的小波函数,利用基于小波变换的方法对直流供电系统电压波动源进行辨识,MATLAB仿真分析表明,不同小波函数可以辨识出直流电压的波动时刻与对应的波动源,具有良好的辨识效果。
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| 关 键 词： | 电能质量 小波变换 直流主动配电网 污染辨识 |
| 收稿时间： | 2017-02-26 |
| 修稿时间： | 2017-04-01 |
Identification of Voltage Pollution Source Based on Wavelet Transform in DC Active Distributed Network |
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| ZHANG Chenyu,DENG Kai,SHI Mingming,ZHENG Jianyong,MIAO Huiyu. Identification of Voltage Pollution Source Based on Wavelet Transform in DC Active Distributed Network[J]. Electric Power Engineering Technology, 2017, 36(4): 21-24,30 |
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| Authors: | ZHANG Chenyu DENG Kai SHI Mingming ZHENG Jianyong MIAO Huiyu |
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| Affiliation: | State Grid Jiangsu Electric Power Research Institute, Nanjing, China, 211103;State Grid Jiangsu Electric Power Maintenance Branch Company, Nanjing, China, 210000;School of Electrical Engineering, Southeast University, Nanjing, China, 210096 |
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| Abstract: | The voltage problems in the DC voltage bus contains the voltage fluctuation, the voltage sag and the voltage interruption problems. In this paper, the wavelet module is established based on idea of wavelet transform. The voltage pollution source in the DC bus is identified by wavelet transform. In the Matlab simulation, different wavelet function can identify the fluctuation time of the DC voltage and the corresponding wave source, which has a good identification effect. |
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| Keywords: | Power quality Wavelet transform DC power supply system pollution identification |
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