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1.华北电力大学电气与电子工程学院,北京市 102206
2.国家节能中心,北京市 100045
李想(1999—),女,博士研究生,主要研究方向:非侵入式负荷智能量测与感知。E-mail:lx2429109351@163.com
刘宇航(1999—),男,硕士研究生,主要研究方向:电力系统及其自动化。E-mail:shaonianlyh@163.com
张琪(1991—),女,博士,主要研究方向:非侵入式负荷智能量测与感知。E-mail:zhangqi@chinanecc.cn
武昕(1986—),女,通信作者,博士,副教授,博士生导师,主要研究方向:智能用电及信息处理、电力系统通信与信号处理技术。E-mail:wuxin07@ncepu.edu.cn
收稿:2023-04-25,
修回:2023-06-13,
网络出版:2023-09-12,
纸质出版:2023-10-10
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李想,刘宇航,张琪等.小波检测和特征图谱决策的非侵入电动自行车充电实时监测系统[J].电力系统自动化,2023,47(19):177-186.
LI Xiang,LIU Yuhang,ZHANG Qi,et al.Non-intrusive Real-time Monitoring System for Electric Bicycle Charging Based on Wavelet Detection and Feature Graph Decision[J].Automation of Electric Power Systems,2023,47(19):177-186.
李想,刘宇航,张琪等.小波检测和特征图谱决策的非侵入电动自行车充电实时监测系统[J].电力系统自动化,2023,47(19):177-186. DOI: 10.7500/AEPS20230425001.
LI Xiang,LIU Yuhang,ZHANG Qi,et al.Non-intrusive Real-time Monitoring System for Electric Bicycle Charging Based on Wavelet Detection and Feature Graph Decision[J].Automation of Electric Power Systems,2023,47(19):177-186. DOI: 10.7500/AEPS20230425001.
电动自行车违规入户充电行为具有时间随机性以及空间隐蔽性,存在较大安全隐患且难以有效管理。利用非侵入式监测系统具有实时自主执行和便捷易推广的特性,文中提出了基于小波检测和特征图谱决策的非侵入式电动自行车充电实时监测系统。考虑电动自行车负荷的物理结构和充电特性,从暂态和稳态两方面分析电动自行车负荷的典型共性特征;预先构建具有强可分性和通用性的电动自行车专有特征图谱实现电动自行车稳态共性特征的一致性结构化表征;实际监测过程中,为了降低系统的算力需求和数据传输压力,基于小波变换精确定位具有高频分量的电动自行车专有暂态现象完成类电动自行车充电事件检测。最后,提取事件波形并通过图谱训练高效分类器进行负荷认定并实时上传。通过对实际用户进行监测,验证了监测系统的有效性,可以有效解决电动自行车进楼入户充电的问题。
The illegal charging behavior of electric bicycles (EBs) in households has temporal randomness and spatial concealment
which poses significant safety hazards and is difficult to effectively manage. A non-intrusive real-time monitoring system for EB charging based on wavelet detection and feature graph decision is proposed
utilizing the characteristics of real-time autonomous execution and promotion-friendly non-intrusive monitoring systems. Considering the physical structure and charging characteristics of EB loads
the typical common characteristics of EB loads are analyzed from both transient and steady-state perspectives. The EB proprietary feature map with strong distinguishability and universality is constructed in advance to realize consistent and structured expression of EB steady-state common features. In the actual monitoring process
in order to reduce the computational power demand and data transmission pressure of the system
EB specific transient phenomena with high-frequency components are accurately located based on wavelet transform to complete EB like charging event detection. Finally
the monitoring system extracts event waveforms and trains efficient classifiers through graphs for load identification and real-time upload. By monitoring actual users
the effectiveness of the monitoring system has been verified
which can effectively solve the problem of charging EBs in buildings and households.
我国电动自行车社会保有量接近 3 亿辆 [EB/OL].( 2020-11-20 )[ 2023-04-01 ]. https://www.gov.cn/xinwen/2020-11/20/content_5562997.htm https://www.gov.cn/xinwen/2020-11/20/content_5562997.htm .
There are nearly 300 million electric bicycles in China [EB/OL]. ( 2020-11-20 )[ 2023-04-01 ]. https://www.gov.cn/xinwen/2020-11/20/content_5562997.htm https://www.gov.cn/xinwen/2020-11/20/content_5562997.htm .
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