具有储能环节的电力电子变压器电能质量研究
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摘要
为解决电力电子变压器无法抵抗电网电压中断这一问题,将储能环节与电力电子变压器相结合进行研究。其中储能环节由超级电容和双向DC/DC变换器所构成。当电网中发生电压中断时,具有储能环节的电力电子变压器可以维持其低压侧直流电压的稳定。给出储能环节中的主要参数与控制策略,在Simulink中建立仿真实验。仿真结果证实:具有储能环节的电力电子变压器具有抵抗电网电压中断的能力,使电网中的设备安全、稳定运行。
To overcome the failure of power electronic transformer in resisting input voltage interruption in power grid, a combination between energy storage link and PET( power electronic transformer) is utilized. The energy storage link consists of an ultracapacitors and a bidirectional DC/DC converter. When input voltage interruption occurs, PET with energy storage link can maintain PET ′ s low DC voltage to be stable. The main parameters of energy storage link are analyzed, the control strategy of the link is designed, and the simulation experiment is built in the MATLAB/Simulink. The simulation experiment results verify the ability of a diagram of PET with energy storage link can resist input voltage interruption in power grid, making the safe and stable operation of equipment in power grid.
To overcome the failure of power electronic transformer in resisting input voltage interruption in power grid, a combination between energy storage link and PET( power electronic transformer) is utilized. The energy storage link consists of an ultracapacitors and a bidirectional DC/DC converter. When input voltage interruption occurs, PET with energy storage link can maintain PET ′ s low DC voltage to be stable. The main parameters of energy storage link are analyzed, the control strategy of the link is designed, and the simulation experiment is built in the MATLAB/Simulink. The simulation experiment results verify the ability of a diagram of PET with energy storage link can resist input voltage interruption in power grid, making the safe and stable operation of equipment in power grid.
引文
[1]毛承雄,王丹,范澍,等.电子电力变压器[M].北京:中国电力出版社,2010.
[2]卢子广,赵刚,杨达亮,等.配电网电力电子变压器技术综述[J].电力系统及其自动化学报,2016,28(5):48-54.
[3]余丽丽,朱俊杰,赵景泰.超级电容器的现状及发展趋势[J].自然杂志,2015,37(3):188-196.
[4]DUJIC D,ZHAO C H,MESTER A,et al.Power electronic traction transformer-low voltage prototype[J].IEEE Trans on Power Electronics,2013,28(12):5522-5534.
[5]ZHANG J,WANG Z,SHAO S.A three phase modular multilevel DC-DC converter for power electronic transformer applications[J].IEEE Journal of Emerging&Selected Topics in Power Electronics,2017(99):1-1.
[6]兰征,涂春鸣,肖凡,等.电力电子变压器对交直流混合微网功率控制的研究[J].电工技术学报,2015,30(23):50-57.
[7]凌晨,葛宝明,毕大强.配电网中的电力电子变压器研究[J].电力系统保护与控制,2012,40(2):34-39.
[8]李子欣,王平,楚遵平,等.面向中高压智能配电网的电力电子变压器研究[J].电网技术,2013,37(9):2593-2601.
[9]刘海波,毛承雄,陆继明,等.电子电力变压器储能系统及其最优控制[J].电工技术学报,2010,25(3):54-60.
[10]徐德鸿.电力电子系统建模及控制[M].北京:机械工业出版社,2006.
[11]刘教民,孙玉巍,付超,等.基于电力电子变压器的电池储能并网系统及其自抗扰控制[J].高电压技术,2017,43(1):131-139.
[2]卢子广,赵刚,杨达亮,等.配电网电力电子变压器技术综述[J].电力系统及其自动化学报,2016,28(5):48-54.
[3]余丽丽,朱俊杰,赵景泰.超级电容器的现状及发展趋势[J].自然杂志,2015,37(3):188-196.
[4]DUJIC D,ZHAO C H,MESTER A,et al.Power electronic traction transformer-low voltage prototype[J].IEEE Trans on Power Electronics,2013,28(12):5522-5534.
[5]ZHANG J,WANG Z,SHAO S.A three phase modular multilevel DC-DC converter for power electronic transformer applications[J].IEEE Journal of Emerging&Selected Topics in Power Electronics,2017(99):1-1.
[6]兰征,涂春鸣,肖凡,等.电力电子变压器对交直流混合微网功率控制的研究[J].电工技术学报,2015,30(23):50-57.
[7]凌晨,葛宝明,毕大强.配电网中的电力电子变压器研究[J].电力系统保护与控制,2012,40(2):34-39.
[8]李子欣,王平,楚遵平,等.面向中高压智能配电网的电力电子变压器研究[J].电网技术,2013,37(9):2593-2601.
[9]刘海波,毛承雄,陆继明,等.电子电力变压器储能系统及其最优控制[J].电工技术学报,2010,25(3):54-60.
[10]徐德鸿.电力电子系统建模及控制[M].北京:机械工业出版社,2006.
[11]刘教民,孙玉巍,付超,等.基于电力电子变压器的电池储能并网系统及其自抗扰控制[J].高电压技术,2017,43(1):131-139.