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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.北京电力经济技术研究院有限公司,北京市 100008
武昕(1986—),女,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
严萌(1997—),女,硕士研究生,主要研究方向:非侵入式负荷监测与智能信息处理技术。E-mail:yanmeng156301@163.com
郭一凡(1998—),女,硕士研究生,主要研究方向:非侵入式负荷监测与智能信息处理技术。E-mail:guoyifan28@163.com
焦 点(1996—),男,通信作者,硕士,工程师,主要研究方向:智能电力信息处理与非侵入负荷监测。E-mail:a1321907679@163.com
收稿日期:2021-09-24,
修回日期:2022-04-18,
网络出版日期:2022-04-25,
纸质出版日期:2022-06-25
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WU Xin,YAN Meng,GUO Yifan,et al.Non-intrusive Load Identification by Combined Support Vector Machine Based on Structured Characteristic Spectrum[J].Automation of Electric Power Systems,2022,46(12):210-219.
武昕,严萌,郭一凡等.基于结构化特征图谱的组合支持向量机非侵入式负荷辨识[J].电力系统自动化,2022,46(12):210-219. DOI: 10.7500/AEPS20210924004.
WU Xin,YAN Meng,GUO Yifan,et al.Non-intrusive Load Identification by Combined Support Vector Machine Based on Structured Characteristic Spectrum[J].Automation of Electric Power Systems,2022,46(12):210-219. DOI: 10.7500/AEPS20210924004.
非侵入式负荷监测是获取负荷数据、实现负荷感知的有效途径。为了使非侵入式负荷监测过程具有通用性和实用性,在不干扰用户情况下自动执行流程并达到高辨识精度,研究了一种结构化特征图谱下的组合支持向量机辨识方法。构建典型负荷的特征图谱将变化无序的波形数据转化为结构化特征数据,使其具有通用性与可分性。在结构化特征图谱基础上,研究构建典型负荷的支持向量机分类器模型,在基分类器基础上形成每类负荷的组合支持向量机分类器,利用“集弱成强”思想保证每类组合分类器具有高分类准确率,从而实现准确的负荷辨识。在构建形成通用的图谱与分类器模型基础上,即可通过事件波形提取、波形数据结构化及分类器判决的处理流程实现实时的非侵入式负荷辨识。通过实际采集的负荷数据进行验证,构建了典型负荷的特征图谱,基于组合支持向量机模型对多户的采集数据进行分类判决,对不同用户的负荷数据均达到了高准确率辨识,验证了该方法具有较好的通用性与有效性。
Non-intrusive load monitoring is an effective way to obtain load data and realize load perception. A combined support vector machine identification method for making the process of the non-intrusive load monitoring universal and practical based on the structured characteristic spectrum
is studied to automatically execute the process without disturbing users and achieve high identification accuracy. By constructing the characteristic spectrum of typical loads
the disordered waveform data are transformed into structured signature data
which makes the signature graph universal and distinguishable. Based on the structured characteristic spectrum
the support vector machine classifier model of typical loads is established
and the combined support vector machine classifier of each type of load is formed based on the base classifier model. The idea of “gathering weak into strong” is used to ensure that each combined classifier has high classification accuracy
so as to realize the accurate load identification. Based on the universal graph and the classifier model
the real-time non-intrusive load identification can be realized through the processing flow of event waveform extraction
waveform data structuration and classifier decision. By the acquired actual load data for verification
the characteristic spectrum of the typical load is developed
the collected data of multiple households based on the combined support vector machine model are classified
and the high accuracy identification for the load data of different users is achieved
which verifies that the proposed method has good universality and effectiveness.
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