作者：熊德智1,2, 陈向群1, 刘雪飞3, 陈奕蕾2, 吴志勇1, 黄瑞1
作者单位：1. 国网湖南省电力公司计量中心, 湖南 长沙 410007;
2. 武汉理工大学信息工程学院, 湖北 武汉 430070;
3. 国网黑龙江省电力有限公司技能培训中心牡丹江分部, 黑龙江 牡丹江 157000
关键词：非线性;谐波源;失真;间谐波;非正弦波
摘要：
为研究配电网中非线性单相负载混合谐波源的特性，提出单相混合谐波源重要参量的分析方法及计算方法。通过分析单相混合谐波源的电压电流特征，给出包含谐波、间谐波、次谐波成分的混合谐波源电压电流瞬时值、有效值的分解方法和计算方法。依据基础公式推导，提出电压电流总谐波失真的计算方法，提出混合谐波源瞬时功率、有功功率的分解方法和计算方法，得出总有功功率测量理论误差与时间的关系。利用该文提出的系列算法，对配电网中某一非线性负载谐波源测试数据进行仿真分析，结果表明：该系列算法能有效计算电压、电流总谐波失真偏差，能准确表征总有功功率测量理论误差与时间的关系，测量时间越大，由间谐波引起的误差越不显著。
Parameter analysis and algorithm research of single-phase hybrid harmonic source
XIONG Dezhi1,2, CHEN Xiangqun1, LIU Xuefei3, CHEN Yilei2, WU Zhiyong1, HUANG Rui1
1. Metering Center of State Grid Hunan Electric Power Company, Changsha 410007, China;
2. Faculty of Information Engieering, Wuhan University of Technology, Wuhan 430070, China;
3. Skills Training Center Mudanjiang Division of State Grid Heilongjiang Electric Power Company, Mudanjiang 157000, China
Abstract: The analytical method and computing method of the important parameters of hybrid harmonic source is proposed to study the characteristics of nonlinear single-phase load hybrid harmonic source in distribution network.The method to decompose and calculate the instantaneous value and effective value of the voltage and current of the hybrid harmonic source that includes harmonics,interharmonics and subharmonic is proposed by analyzing the voltage and current characteristics of single-phase hybrid harmonic source.Deduced according to the basic formula,the algorithm to calculate total harmonics distortion of voltage and current and decomposition and calculation methods for instantaneous power and real power of hybrid harmonic source are proposed,so as to obtain the relation between theoretical measurement error of the total active power and time.Based on series algorithms proposed in the paper,the simulation analysis is carried out for test data of certain nonlinear load harmonic source in power distribution network.The results show that the algorithm can effectively calculate the total harmonic distortion deviation of voltage and current,and can correctly represent the relationship between theoretical measurement error of the total active power and time.If the measuring time is longer,the error caused by harmonics will be less significant.
Keywords: nonlinear;harmonic source;distortion;interharmonic;non-sinusoidal wave
2017, 43(10): 97-101 收稿日期: 2017-02-10;收到修改稿日期: 2017-05-13
基金项目: 国网总部指南项目专项基金（5217AB170001）；国家电网公司科技创新项目（5216AB160003）
作者简介: 熊德智(1979-),男,湖北鄂州市人,博士研究生,研究方向为电力系统通信、智能配电网、电测量技术等。
参考文献
[1] 熊杰锋,李群,袁晓冬,等. 电力系统谐波和间谐波检测方法综述[J]. 电力系统自动化,2013,37(11):125-133.
[2] 许加柱,庞丽忠,张志文. 多谐波源用户的谐波责任分摊的定量分析[J]. 电力自动化设备,2012,32(12):38-42.
[3] 沈睿佼,杨洪耕,吴昊. 基于奇异值总体最小二乘法的间谐波估计算法[J]. 电网技术,2006,30(23):45-49.
[4] GALLO D, LANGELLA R, TESTA A. Desynchronized processing technique for harmonic and interharmonic analysis[J]. IEEE Transactions on Power Delivery,2004, 19(3):993-1001.
[5] 金维刚,刘会金. IEC标准框架下谐波和间谐波检测的最优化方法[J]. 电力系统自动化,2012,36(2):70-76.
[6] 高培生,谷湘文,吴为麟. 基于空间谱和支持向量回归机的间谐波分析[J]. 电力系统自动化,2007,31(24):67-70.
[7] MAK S T. A new method of generating TWACS type outbound signals for communication on power distribution networks[J]. IEEE Transactions on Power Apparatus and Systems,1984,103(8):2134-2140.
[8] 祁才君,王小海. 基于插值FFT算法的间谐波参数估计[J].电工技术学报,2003,18(3):92-95.
[9] 蔡忠法,陈隆道. 基于AR谱估计和Adaline神经元的间谐波分析[J]. 电力系统自动化,2007,31(17):78-82.
[10] 张波,何奔腾,王慧芳,等. 基于正余弦滤波器对的相量算法[J]. 电力系统自动化,2013,37(19):86-92.
[11] 赵黎丽. 基于相关Hanning窗插值的间谐波分析算法[J].电工技术学报,2008,23(11):153-158.
[12] 王楠,肖先勇,曾颂崎,等. 基于插值线性调频Z变换的间谐波分析方法[J]. 电网技术,2007,31(18):43-47.
[13] 卿柏元,滕召胜,高云鹏,等. 基于Nuttall窗双谱线插值FFT的电力谐波分析方法[J].中国电机工程学报,2008, 28(25):153-158.
[14] 申邵东,魏星. 谐波对有功电能计量影响的仿真研究[J].电力自动化设备,2008,28(2):54-57.
[15] 宁志毫,罗隆福,李勇,等. 大功率整流系统谐波功率特性及其对电能计量的影响和节能分析[J]. 电力系统自动化,2012,27(11):248-255.
[16] PAJIC S, EMANUEL A E. Effect of neutral path power losses on the apparent power definition:A preliminary study[J]. IEEE Transactions on Power Delivery,2009,24(2):517-523.
