畸变波形动态测试信号模型及电能表动态误差分析
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摘要
首先分析了智能电能表动态误差的来源,给出了引起电能表动态误差的影响因素,其后,建立了畸变波形确定型动态测试信号模型,推到给出了该信号模型的电能理论值,以此理论值作为仿真分析的参考电能量值,然后,仿真分析了正弦包络和梯形包络下各影响因素导致的动态误差,最后,研究给出了各影响因素对电能表动态误差影响的程度,其中量程切换影响最大。
Firstly,the source of the dynamic error of the smart meter is analyzed,and the new influencing factors of the accurate measurement of the smart meter are given. Then,the dynamic test signal model of the distortion waveform is established,and the theoretical value of electric energy of the model is given as the reference energy value of subsequent simulation. And then,the dynamic measurement error caused by the influence factors of the sinusoidal envelope and the trapezoidal envelope is simulated and analyzed. Finally,the results show that each factor has an influence on the dynamic error of the energy meter,in which the range switch has the greatest impact.
Firstly,the source of the dynamic error of the smart meter is analyzed,and the new influencing factors of the accurate measurement of the smart meter are given. Then,the dynamic test signal model of the distortion waveform is established,and the theoretical value of electric energy of the model is given as the reference energy value of subsequent simulation. And then,the dynamic measurement error caused by the influence factors of the sinusoidal envelope and the trapezoidal envelope is simulated and analyzed. Finally,the results show that each factor has an influence on the dynamic error of the energy meter,in which the range switch has the greatest impact.
引文
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[3]王建学,高卫恒,别朝红.冲击负荷对电力系统可靠性影响的分析[J].中国电机工程学报,2011,31(10):59-65.Wang Jianxue,Gao Wei-heng,Bie Zhaohong.Influence of Shock Loads on Power System Reliability[J].Proceeding of the CSEE,2011,31(10):59-65.
[4]王学伟,贾晓璐,王琳,等.电能表动态误差特性实验研究[J].电测与仪表,2013,50(12):1-4.Wang Xuewei,Jia Xiaolu,Wang Lin,et al.Experimental research fordynamic error characteristic of electrical energy meter[J].Electrical Measuring&Instruments,2013,50(12):1-4.
[5]Alessandro Ferrero,Marco Prioli,and Simona Salicone.A metrological comparison between different methods for harmonic pollution metering[J].IEEE Transactions on Instrumentation and Measurement.Vol.61,no.11.November 2012.pp.2972-2981.
[6]Hu Yu,Yuan Yue,Chen Zhifei,Xiao Ling.Research on the calculation of the influence of arc furnace reactive impact loads on power system and the method of compensation[J].2010 Conference Proceedings IPEC.October 2010.pp.1052-1055.
[7]李娟,高厚磊,武志刚,等.有源配电网差动保护自同步原理及误差分析[J].电力系统自动化,2016,40(9):78-85.Li Juan,Gao Houlei,Wu Zhigang,Data Self-synchronization Method and Error Analysis of differential Protection in active Distribution Networks[J].Automation of Electric Power Systems,2016,40(9):78-85.
[8]张晓冰,李云辉,房国志.非平稳畸变信号条件下电网信号建模[J].中国电机工程学报,2014,34(16):2721-2728.Zhang Xiaobing,Li Yunhui,Fang Guozhi.Modeling for Power Grid Signals Under the Condition of Non-stationary Distortion Signals[J].Proceedings of the Csee,2014,34(16):2721-2728.
[9]陆祖良,王磊,李敏.对电能表动态测量功能评价的讨论[J].电测与仪表,2010,47(4):1-4.Lu Zuliang,Wang Lei,Li Min.Discussion on Evaluation of Dynamic Measurement Function of Electric Energy Meter[J].Electrical Measurement&Measurement,2010,47(4):1-4.
[10]王学伟,温丽丽,袁瑞铭,等.智能电能表动态误差确定型测试激励信号的讨论[J].电测与仪表,2014,51(4):1-7.Wang Xuewei,Wen Lili,Yuan Ruiming,et al.Discussion of Definitive Test Excitation Signals for Dynamic Error of Intelligent Electric Meter[J].Electrical Measurement&Instrumentation,2014,51(4):1-7.
[11]Wang X,Chen J,Yuan R,et al.OOK power model based dynamic error testing for smart electricity meter[J].2017,28(2):025015.
[12]JJG 596-2012,电子式交流电能表检定规程[S].
[13]IEC 62052-11(2003-02)part 9:Type test[S].