电动汽车充电纹波对直流电能计量影响分析
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摘要
现有电动汽车直流充电桩的输出电压高、电流大且带有纹波,传统直流电能计量方式并未考虑大功率工作条件下纹波对其计量准确性的影响。为此,结合充电桩直流产生原理,根据直流充电机输出纹波特点和充电桩用直流电能表、直流电能计量模块的工作原理,重点研究和分析直流电能计量不同算法对带有纹波的高功率直流计量时存在的误差影响。分析了纹波影响规律,借助标准源和标准表进行验证,并在此基础上定量确定高功率状态下直流纹波对直流计量影响,为直流充电电能的准确计量、优化直流计量算法等提供依据。
The DC charging pile of the existing electric vehicle( EV) has the characteristics of high output of voltage and current and both of them have ripple at the same time. The impact of ripple on the measurement accuracy was not taken into account in the traditional DC energy meter under high power working conditions. Based on the working principle of the charging pile,the characteristics of the output ripple of DC charging pile and the working principle of the DC energy meter or metering module,the errors of the different algorithms are analyzed in this paper. The regularity of ripple effects is analyzed,and a standard source and a standard DC meter are used to verify it. The error of the ripple on the DC energy measurement is determined quantitatively,and all about this research provides the basis for the accurate measurement of DC charging energy and the optimization of DC metering algorithms.
The DC charging pile of the existing electric vehicle( EV) has the characteristics of high output of voltage and current and both of them have ripple at the same time. The impact of ripple on the measurement accuracy was not taken into account in the traditional DC energy meter under high power working conditions. Based on the working principle of the charging pile,the characteristics of the output ripple of DC charging pile and the working principle of the DC energy meter or metering module,the errors of the different algorithms are analyzed in this paper. The regularity of ripple effects is analyzed,and a standard source and a standard DC meter are used to verify it. The error of the ripple on the DC energy measurement is determined quantitatively,and all about this research provides the basis for the accurate measurement of DC charging energy and the optimization of DC metering algorithms.
引文
[1]崔玉峰,杨晴,张林山,等.国内外电动汽车发展现状及充电技术研究[J].云南电力技术,2012,38(2):9-12.
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[12]吴鑫源,蔡方辉,姚莉.单相宽量程充电桩电能计量装置的设计及检验[J].电测与仪表,2012,(4):80-83.Wu Xinyuan,Cai Fanghui,Yao Li.Design and Inspection of Single Phase Wide Measurement Range Electricity Metering Device for EV Charging Point[J].Electrical Measurement&Instrumentation,2012,(4):80-83.
[13]任士焱,丁欣颖,等.强直流计量标准装置量值传递与溯源方法[J].仪器仪表学报,2013,(7):60-66.Ren Shiyan,Ding Xinying,et al.Quantity dissemination and traceability methods for high DC standard measurement device[J].Chinese Journal of Scientific Instrument,2013,(7):60-66.
[14]许晓慧,徐石明,等.电动汽车及充换电技术[M].北京:中国电力出版社.
[15]Power Components in a System with Sinusoidal and Non-sinusoidal Voltages and/or Currents.Slonim M A,Van Wyk J D.IEE Proceedings,1988,135(Pt.B2),pp.76-78.
[16]Emanuel A E.Power in Non-sinusoidal Situations.A Review of Definitions and Physical Meaning[J].IEEE Transactions on Power and Delivery,1990.
[2]谢广宇.电动汽车充电桩建设之探讨[J].电源世界,2015,(11):60-62.Xie Guangyu.Research on the Construction of EV Charging pole[J].The world of Power Supply,2015,(11):60-62.
[3]王旭,齐向东.电动汽车智能充电桩的设计与研究[J].机电工程,2014,(3):393-396.
[4]李锦瑭.电动汽车V2G充电站充放电控制策略与谐波特性研究[D].哈尔滨:哈尔滨工业大学工学硕士学位论文,2015.
[5]胡泽春,宋永华,等.电动汽车接入电网的影响与利用[J].中国电机工程学报,2012,(4):1-10,25.Hu Zechun,Song Yonghua,et al.Impacts and Utilization of Electric Vehicles Integration Into Power Systems[J].Proceedings of the CSEE,2012,(4):1-10,25.
[6]党存禄,吴青峰,李勇.电动汽车充电站的谐波治理方法研究[J].电测与仪表,2014,51(9):123-128.Dang Cunlu,Wu Qingfeng,Li Yong.Electric Vehicle Charging Stations Harmonic Suppression Method[J].Electrical Measurement&Instrumentation,2014,51(9):123-128.
[7]Antti Supponen,Antti Rautiainen,Joni Markkula,Antti M?kinen,Pertti Jrventausta,Sami Repo.Power quality in distribution networks with electric vehicle charging-a research methodology based on field tests and real data[C].2016 Eleventh International Conference on Ecological Vehicles and Renewable Energies(EVER),6-8 April2016:1-16.
[8]刘东奇,钟庆昌,等.基于同步逆变器的电动汽车V2G智能充放电控制技术[J].中国电机工程学报,2017,(2):544-557.
[9]张纯江,顾和荣,等.基于新型相位幅值控制的三相PWM整流器数学模型[J].中国电机工程学报,2003,(7):28-31.Zhang Chunjiang,Gu Herong,et al.Mathematical Model of ThreePhase PWM Rectifier Based on a Novel Phase and Amplitude Control[J].Proceedings of the CSEE,2003,(7):28-31.
[10]俞丰.脉动直流的纹波系数[J].电镀与精饰,2014,(5):18-21,36.
[11]张昀,黄艳,等.电动汽车充电站用直流电能表产品标准和检测技术研究[J].电测与仪表,2012,(S1):68-74.Zhang Jun,Huang Yan,et al.Standards and Test Research of the DC Electric Energy Meters Used in the Electric Vehicle Charging Stations[J].Electrical Measurement&Instrumentation,2012,(S1):68-74.
[12]吴鑫源,蔡方辉,姚莉.单相宽量程充电桩电能计量装置的设计及检验[J].电测与仪表,2012,(4):80-83.Wu Xinyuan,Cai Fanghui,Yao Li.Design and Inspection of Single Phase Wide Measurement Range Electricity Metering Device for EV Charging Point[J].Electrical Measurement&Instrumentation,2012,(4):80-83.
[13]任士焱,丁欣颖,等.强直流计量标准装置量值传递与溯源方法[J].仪器仪表学报,2013,(7):60-66.Ren Shiyan,Ding Xinying,et al.Quantity dissemination and traceability methods for high DC standard measurement device[J].Chinese Journal of Scientific Instrument,2013,(7):60-66.
[14]许晓慧,徐石明,等.电动汽车及充换电技术[M].北京:中国电力出版社.
[15]Power Components in a System with Sinusoidal and Non-sinusoidal Voltages and/or Currents.Slonim M A,Van Wyk J D.IEE Proceedings,1988,135(Pt.B2),pp.76-78.
[16]Emanuel A E.Power in Non-sinusoidal Situations.A Review of Definitions and Physical Meaning[J].IEEE Transactions on Power and Delivery,1990.