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| Research and application of power saver for low voltage distribution system based on mathematical model |
| Yu Mingjiang, Dong Qin, Feng Wanxing, Zhou Sheng, Xiong Jiajun |
| Wuhan Nari Limited Company of state Grid Electric Power Research Institute, Wuhan 430074; |
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Abstract Based on the principle of multi-winding flux coupling, a mathematical model of low voltage power distribution system is established. The characteristic of zero order equivalent circuit is analyzed, which shows that it can filter out the zero-sequence first harmonic and harmonic load current, and reduces the zero-sequence current caused by the zero-sequence component of power source. The Matlab simulation method verifies the correctness of the theoretical analysis. The power saver for Low voltage power distribution system makes the zero sequence low resistance bypass between the power supply and the load, the fundamental imbalance current, the third harmonic frequency harmonic current and other zero sequence current generated by the load flow into the zero sequence low resistance bypass to save the electric power. The power saver for Low voltage power distribution system can filter out harmonic current, balance three-phase unbalanced load to improve the power quality.
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Received: 23 August 2017
Published: 19 March 2018
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| Cite this article: |
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Yu Mingjiang,Dong Qin,Feng Wanxing等. Research and application of power saver for low voltage distribution system based on mathematical model[J]. Electrical Engineering, 2018, 19(3): 20-25.
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| URL: |
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http://dqjs.cesmedia.cn/EN/Y2018/V19/I3/20
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[1] 林志雄, 陈岩, 蔡金锭, 等. 低压配电网三相不平衡运行的影响及治理措施[J]. 电力科学与技术学报, 2009, 24(3): 63-67.
[2] 杨云龙, 王凤清. 配电变压器三相不平衡运行带来的附加损耗、电压偏差及补偿方法[J]. 电网技术, 2004, 28(8): 73-76.
[3] 李国栋, 冯力鸿, 顾强, 等. 曲折接线变压器抑制零序三次谐波电流方法研究[J]. 现代电力, 2006, 23(6): 40-44.
[4] 祝亚峰, 刘飞, 付念先. 配电系统节电器节电技术研究[J]. 能源与节能, 2013, 88(1): 28-31.
[5] 莫青, 刘飞, 喻明江, 等. 基于曲折型自耦变压器的节电器稳态模型[J]. 信息技术, 2014, 4(4): 100-103.
[6] 陶毅, 翟克俊. 低压配电降压节电器技术性能的研究[J]. 节能与环保, 2005, 1(7): 34-35.
[7] 张德丰. Matlab数值计算方法[M]. 北京: 机械工业出版社, 2010.
[8] 张静. Matlab在控制系统中的应用[M]. 北京: 电子工业出版社, 2007. |
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2018, Vol. 19 
