Energy Storage Science and Technology ›› 2016, Vol. 5 ›› Issue (2): 241-245.doi: 10.3969/j.issn.2095-4239.2016.02.018

• Application technology • Previous Articles     Next Articles

Application of lithium ion phosphate battery in 110 kV substation DC power system

WEI Zengfu1, SU Wei1, ZHONG Guobin1, XU Kaiqi1, WANG Chao1, CHEN Sizhen2, ZHENG Weixun3, LAI Rijing2   

  1. 1 Electric Power Research Institute of Guangdong Power Grid Co. Ltd., Guangzhou 510080, Guangdong, China;
    2 Dongguan Power Supply Bureau of Guangdong Power Grid Co. Ltd., Dongguan 523120, Guangdong, China;
    3 Huizhou Power Supply Bureau of Guangdong Power Grid Co. Ltd., Huizhou 516000, Guangdong, China
  • Received:2015-10-22 Revised:2015-11-19 Online:2016-03-01 Published:2016-03-01

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Abstract: Two types of battery management modes were applied for LiFePO4 battery packs used in 110 kV substation DC power system. The operation result indicated that LiFePO4 battery showed capability of replacement of lead-acid battery and good float-charging characteristics. The voltage and the internal resistance changed with the SOC of the single cells and the battery packs presented a 3% capacity degradation per year. Suitable battery management mode kept a small voltage difference among the single cells and prolonged the cycling life of the battery packs.

Key words: lithium ion phosphate battery pack, direct current power supply system, battery management mode

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