尤子龙,徐璟,张丛余,李静,边惠萍,杨昌富
YOU Zilong,XU Jing,ZHANG Congyu,LI Jing,BIAN Huiping,YANG Changfu

• 1:国网浙江省电力有限公司丽水供电公司
• 2:哈尔滨电工仪表研究所有限公司
• 3:许继电源有限公司

摘要(Abstract)：

在常规直流电能计量算法的基础上,针对目前非线性负荷对直流计量准确度影响显著的问题,提出了电动汽车直流充电时的改进计量算法,将离散小波消噪法和梯形积分法引入电动汽车直流充电电能计量;利用离散小波消噪法对采样电压和采样电流信号进行滤波处理,进而得到功率,再利用梯形积分法对功率积分从而实现电能计量。与传统的直流计量法相比,所提改进算法的结构简单、计量精度更高,适合电动汽车的直流充电电能计量。
Based on analyzing the conventional DC electric energy metering algorithm, an improved metering algorithm for DC charging of electric vehicle is put forward, aiming at solving the problem that the nonlinear load has a significant influence on the accuracy of DC metering. The discrete wavelet denoising method and trapezoidal integration method are introduced into electric energy metering for the DC charging of electric vehicle. The sampling voltage and current signals are filtered and processed by discrete wavelet denoising method, to get the power, and the electric energy metering is realized by using the trapezoidal integration method to integrate the power. Compared with the traditional DC metering method, the algorithm adopted in this paper has the advantages of simpler structure and higher metering accuracy and is suitable for electric energy metering of the DC charging of electric vehicles.

关键词(KeyWords)： 直流计量;电动汽车直流充电;离散小波消噪;梯形积分
DC metering;DC charging of electric vehicle;discrete wavelet denoising;trapezoidal integration

Abstract:

Keywords:

基金项目(Foundation): 国网浙江省电力有限公司科技项目(5211LS170004)

作者(Author): 尤子龙,徐璟,张丛余,李静,边惠萍,杨昌富
YOU Zilong,XU Jing,ZHANG Congyu,LI Jing,BIAN Huiping,YANG Changfu

DOI: 10.19585/j.zjdl.201912003

参考文献(References)：

• [1]何毓函.电动汽车直流充电控制策略及计量准确性的研究[D].济南：山东大学,2018.
• [2]宋鹏,潘峰,林国营,等.电动汽车充电纹波对直流电能计量影响分析[J].电测与仪表,2018,55(1):46-52.
• [3]李建强,朱德省,张健辉.适用于光伏发电系统的直流电能计量算法[J].电测与仪表,2012,49(10):75-79.
• [4]张丛余.连铸方坯典型内部质量缺陷预报与诊断分析研究[D].沈阳：东北大学,2016.
• [5]马志强.电动汽车直流充电计量研究及计量模块设计[D].重庆：重庆大学,2017.
• [6]朱欢.电动汽车充换电中的新型电能计量系统研究[D].北京：华北电力大学,2013.
• [7]门长有.电能计量算法及其SoC实现[D].杭州：浙江大学,2009.
• [8]刘影,张威,丁恒春,等.基于FFT的双向电能计量算法及仿真研究[J].信息技术,2017(9):67-70.
• [9]裴益轩,郭民.滑动平均法的基本原理及应用[J].火炮发射与控制学报,2001(1):21-23.
• [10]曾瑞江,杨震斌,柳慧超.基于小波变换的电力系统谐波检测方法研究[J].电力系统保护与控制,2012,40(15):35-39.
• [11]徐健,吴磊磊.一种傅里叶变换与小波变换相结合的谐波检测方法[J].自动化技术与应用,2015,34(2):68-70.
• [12]SANTOSO S,GRADY W M,POWERS E J,et al.Characterization of distribution power quality events with Fourier and wavelet transforms[J].IEEE Transactions on Power Delivery,2000,15(1):247-254.
• [13]SIMONOV M.Hybrid scheme of electricity metering in smart grid[J].IEEE Systems Journal,2014,8(2):422-429.
• [14]CATALIOTTI A,COSENTINO V.Harmonic sources detection in power systems via nonactive power measurements according to IEEE Std.1459-2010:Theoretical approach and experimental results[C]//2010 IEEE International Workshop on Applied Measurements for Power Systems.New York,USA:IEEE,2010.
• [15]BRITO V H F,KUME G Y,QUINALIA M S,et al.Analysis of the influence of non-linear loads on the measurement and billing of electrical energy compared with the CPT[C]//2016 17th International Conference on Harmonics and Quality of Power(ICHQP).New York,USA:IEEE,2016.
• [16]宋辉,徐永海.电压暂降对电动汽车充电影响研究[J].电网与清洁能源,2017,33(1):143-149.
• [17]尹忠东,闫卓武,石静,等.一种基于MMC的电动汽车充放电系统及其稳态运行研究[J].电网与清洁能源,2018,34(1):101-108.
• [18]严勤,曾洁.电动汽车的充电模式及充电设施建设运营模式研究[J].电力大数据,2018,20(1):39-42.
• [19]游孝.电能计量自动化系统在配网维护中的应用[J].电力大数据2017,20(11):86-88.
• [20]刘亚丽,李国栋,刘云,等.基于随机森林的电动汽车充电行为聚类技术研究[J].电力工程技术,2019,38(6):115-121.
• [21]张娅婷,陈中,段然,等.考虑主动响应的电动汽车充电站-配电网协同规划[J].电力工程技术,2019,38(5):71-77.
• [22]高峰,谈韵,陶远鹏,等.电动汽车驱动充电一体化控制策略研究[J].电力工程技术,2018,37(2):73-77.
• [23]李逸欣,林勇,杨军.基于改进加权Voronoi图的多场景电动汽车充电网络规划方法[J].广东电力,2019,32(8):43-50.
• [24]程韧俐,王颖,刘东洋,等.基于电动汽车充放电的Prosumer单元并网优化研究[J].广东电力,2019,32(11):96-102.
• [25]杨婧,辛明勇等.基于拉依达准则的计量自动化系统数据准确性判断方法[J].电力大数据2017,20(11):74-78.