基于温度场仿真的智能电能表电源回路误保护特性的分析与优化
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摘要
针对智能电能表电源回路的误保护问题,提出了一种基于电源回路温度场仿真的智能电能表电源回路误保护特性分析与优化方法。首先,在Saber中搭建电能表电源回路的电仿真模型,获取变压器的发热功率。其次,在Ansys Icepak中搭建电能表整机的热仿真模型,结合变压器的发热功率及环境温度,仿真分析电能表温度场分布。然后,结合变压器损耗分布情况,对电能表保护特性进行仿真分析,得到其误保护概率。最后,通过对电能表变压器铁损优化降低电源回路的误保护概率,优化其保护特性。
Aiming at the problem of error protection of power supply circuit in the smart meter,this paper presents an analysis and optimization method of the smart meter circuit based on power source temperature field simulation. First of all,the power circuit simulation model of electricity meter is built in Saber to acquire the heating power of transformer. Then,the thermal simulation model of the energy meter machine is set up in Ansys Icepak,and the temperature field distribution of the energy meter is simulated and analyzed according to the heating power of the transformer and ambient temperature.Secondly,combined with the distribution of the transformer loss,the protection characteristic of the energy meter is simulated and analyzed,and the probability of false protection is obtained. Finally,the false protection probability of the power supply circuit is reduced through the optimization of the iron loss of the energy meter transformer,and the protection characteristic is optimized.
Aiming at the problem of error protection of power supply circuit in the smart meter,this paper presents an analysis and optimization method of the smart meter circuit based on power source temperature field simulation. First of all,the power circuit simulation model of electricity meter is built in Saber to acquire the heating power of transformer. Then,the thermal simulation model of the energy meter machine is set up in Ansys Icepak,and the temperature field distribution of the energy meter is simulated and analyzed according to the heating power of the transformer and ambient temperature.Secondly,combined with the distribution of the transformer loss,the protection characteristic of the energy meter is simulated and analyzed,and the probability of false protection is obtained. Finally,the false protection probability of the power supply circuit is reduced through the optimization of the iron loss of the energy meter transformer,and the protection characteristic is optimized.
引文
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[9]张建峰,王翠玲,吴玉萍,等. ANSYS有限元分析软件在热分析中的应用[J].冶金能源,2004,23(5):9-12.Zhang Jianfeng,Wang Cuiling,Wu Yuping,et al. Application of ANSYS in Heat-analysis[J]. Energy for Metallurgical Industry,2004,23(5):9-12.
[10]谢德馨,白保东.计算电磁学中电工钢片磁特性模型研究的新进展[J].沈阳工业大学学报,2007,29(3):289-294.Xie Dexin,Bai Baodong. New development of magnetic property modeling of electrical steel sheet in computational electromagnetics[J]. Journal of Shenyang University of Technology,2007,29(3):289-294.
[2]黄金良,周韶园,郑荐中,等.我国电能表的种类、管理以及质量情况综述[J].中国计量,2012.Huang Jinliang,Zhou Shaoyuan,Zheng Jianzhong,et al. Overview of the types,management and quality of electricity meters in China[J].China Metrology,2012.
[3]蔡周峰.智能电能表的研究与设计[D].南京:南京理工大学,2013.Cai Zhoufeng. Research and design of intelligent electric energy meter[D]. Nanjing:Nanjing University of Science and Technology,2013.
[4]贺静丹,滕召胜,温和,等.单相多功能电能表设计[J].电子测量与仪器学报,2011,25(1):89-95.He Jingdan,Teng Zhaosheng,Wen He,et al. Design of single-phase multi-function energy meter[J]. Journal of Electronic Measurement and Instrument,2011,25(1):89-95.
[5]李珏煊.单相智能电能表故障模式及影响分析[D].北京:华北电力大学(北京),2012.Li Yuxuan. Failure mode and influence analysis of single phase intelligent electric energy meter[D]. Beijing:North China Electric Power University(Beijing),2012.
[6]奚浩晨.伺服机构热—力耦合仿真与电子舱热仿真分析[D].北京:北京理工大学,2016.Xi Haochen. Thermal mechanical coupling simulation of servo mechanism and thermal simulation analysis of electronic cabin[D]. Beijing:Beijing Institute of Technology,2016.
[7]马岩.印制电路板详细模型的热仿真分析[J].机械设计与制造工程,2016,45(1):52-55.Ma Yan. Thermal simulation analysis of printed circuit board detailed model[J]. Machine Design and Manufacturing Engineering,2016,45(1):52-55.
[8]刘建,王忠东,徐晴,等.工频电磁场对智能电能表干扰仿真分析研究[J].电测与仪表,2015,52(6):16-22.Liu Jian,Wang Zhongdong,Xu Qing,et al. Simulation analysis of electromagnetic interference on smart meters[J]. Electrical Measurement&Instrumentation,2015,52(6):16-22.
[9]张建峰,王翠玲,吴玉萍,等. ANSYS有限元分析软件在热分析中的应用[J].冶金能源,2004,23(5):9-12.Zhang Jianfeng,Wang Cuiling,Wu Yuping,et al. Application of ANSYS in Heat-analysis[J]. Energy for Metallurgical Industry,2004,23(5):9-12.
[10]谢德馨,白保东.计算电磁学中电工钢片磁特性模型研究的新进展[J].沈阳工业大学学报,2007,29(3):289-294.Xie Dexin,Bai Baodong. New development of magnetic property modeling of electrical steel sheet in computational electromagnetics[J]. Journal of Shenyang University of Technology,2007,29(3):289-294.