磷酸铁锂电池在变电站的应用安全性分析及其系统设计
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摘要
国内从磷酸铁锂电池的浮充性能、磷酸铁锂电池浮充性能改进以及非浮充式的磷酸铁锂电池直流系统等方面研究了磷酸铁锂电池在变电站应用的可行性,磷酸铁锂电池被视为变电站直流电源中铅酸蓄电池的理想替代品。但是磷酸铁锂电池仍然存在不能过充过放、一致性差、单体容量小等缺点,使其在变电站的应用中存在不可忽视的安全风险。为解决以上问题,本文设计了一种先串联满足电压等级再并联满足容量要求的磷酸铁锂电池拓扑结构,并对各串联电池组进行独立的充电控制,避免过充电及并联电池组的环流风险,满足交流失电时直流母线的无缝供电要求。
The research in domestic on the feasibility of applying lithium iron phosphate battery in substation, mainly cover the research of floatation performance, the modification of floating charge performance and the non-floating charging mode of lithium iron phosphate battery. Lithium batteries are considered an ideal replacement for lead-acid batteries in substation DC power supplies. However,lithium iron phosphate batteries still have the characteristics of being unable to overcharge and discharge,poor consistency, and small monomer capacity, so that there are still safety risks that cannot be ignored in the application of substations. In order to solve the above problems, In this paper it is designed that a topology structure of lithium iron phosphate battery which connect in series to meet the voltage level and then connect in parallels to meet the capacity requirements. It performs independent charging control for each battery pack to avoid the risk of over-charging and parallel battery pack circulation,which could meet the seamless power supply requirements of DC bus bars during AC power loss.
The research in domestic on the feasibility of applying lithium iron phosphate battery in substation, mainly cover the research of floatation performance, the modification of floating charge performance and the non-floating charging mode of lithium iron phosphate battery. Lithium batteries are considered an ideal replacement for lead-acid batteries in substation DC power supplies. However,lithium iron phosphate batteries still have the characteristics of being unable to overcharge and discharge,poor consistency, and small monomer capacity, so that there are still safety risks that cannot be ignored in the application of substations. In order to solve the above problems, In this paper it is designed that a topology structure of lithium iron phosphate battery which connect in series to meet the voltage level and then connect in parallels to meet the capacity requirements. It performs independent charging control for each battery pack to avoid the risk of over-charging and parallel battery pack circulation,which could meet the seamless power supply requirements of DC bus bars during AC power loss.
引文
[1]王宏伟.基于阶梯式放电的蓄电池维护技术[J].电气技术,2015,16(1):102-105,112.
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[4]钟国彬,周方方,魏增福,等.磷酸铁锂电池作为变电站用直流电源的特性[J].广东电力,2015,28(4):57-61.
[5]李晶,陈轲娜.基于铁锂电池的非浮充式变电站直流电源系统[J].四川电力技术,2013,36(5):30-32.
[6]李瑾,张宇,李景霖,等.磷酸铁锂电池在变电站系统应用的可行性分析[J].华东电力,2009,37(10):1693-1697.
[7]李锐华,李冀,胡波,等.基于Buck-Boost变换器的磷酸铁锂电池串联电压均衡优化策略[J].电气技术,2018,19(3):1-7.
[8]Tobishima S.i,Yamaki J.i.A consideration of lithium cell safety[J].Journal of Power Sources,1999(81/82):882-886.
[9]陈玉红,唐致远,贺艳兵,等.锂离子电池爆炸机理分析[J].电化学,2006,12(3):266-270.
[10]刘红锐,张昭怀.锂离子电池组充放电均衡器及均衡策略[J].电工技术学报,2015,30(8):186-192.
[11]段建峰.大容量锂离子动力电池设计与性能研究[D].赣州:江西理工大学,2013.
[2]吕航,刘承志,尹栋,等.深海动力磷酸铁锂电池组均衡方案设计优化[J].电工技术学报,2016,31(19):232-238.
[3]魏增福,苏伟,钟国彬,等.磷酸铁锂电池组在变电站直流系统的应用[C]//2015年中国化工学会年会论文集,2015:1.
[4]钟国彬,周方方,魏增福,等.磷酸铁锂电池作为变电站用直流电源的特性[J].广东电力,2015,28(4):57-61.
[5]李晶,陈轲娜.基于铁锂电池的非浮充式变电站直流电源系统[J].四川电力技术,2013,36(5):30-32.
[6]李瑾,张宇,李景霖,等.磷酸铁锂电池在变电站系统应用的可行性分析[J].华东电力,2009,37(10):1693-1697.
[7]李锐华,李冀,胡波,等.基于Buck-Boost变换器的磷酸铁锂电池串联电压均衡优化策略[J].电气技术,2018,19(3):1-7.
[8]Tobishima S.i,Yamaki J.i.A consideration of lithium cell safety[J].Journal of Power Sources,1999(81/82):882-886.
[9]陈玉红,唐致远,贺艳兵,等.锂离子电池爆炸机理分析[J].电化学,2006,12(3):266-270.
[10]刘红锐,张昭怀.锂离子电池组充放电均衡器及均衡策略[J].电工技术学报,2015,30(8):186-192.
[11]段建峰.大容量锂离子动力电池设计与性能研究[D].赣州:江西理工大学,2013.