Optimized Design of Lithium Battery System for Microgrid Energy Storage in Severely Cold and High Elevation Regions

doi:10.11930/j.issn.1004-9649.202001028

Electric Power ›› 2020, Vol. 53 ›› Issue (5): 128-134.DOI: 10.11930/j.issn.1004-9649.202001028

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Optimized Design of Lithium Battery System for Microgrid Energy Storage in Severely Cold and High Elevation Regions

ZHAO Bin^1,2, HU Ruwei², JIANG Dongfang³, DONG Xiaodong¹, LUO Weilin⁴, LIU Hui⁴

1. Energy Research and Demonstration Center of Tibet, Lasa 850000, China;
2. North China University of Science and Technology, Tangshan 063210, China;
3. State Grid Energy Research Institute Co., Ltd., Beijing 102209, China;
4. Shanghai Power & Energy Storage Battery System Engineering Technology Co., Ltd., Shanghai 201100, China

Received:2020-01-06 Revised:2020-02-16 Published:2020-05-05
Supported by:
This work is supported by Tibet's Major Science and Technology Project (Invention and Demonstration of a Multi-energy Complementary Energy System Coupled with Oxygen Production Technology in High and Cold Regions, No.XZ201801-GA03)

Abstract

Abstract: Performance of lithium iron phosphate batteries was assessed, which were chosen for energy storage in the microgrid system in severely cold and high elevation regions. The influence of ambient temperature on those important parameters such as charge-discharge performance, cycle life, system capacity and safety performance was analyzed. The results showed that lithium iron phosphate batteries had long cycle life with excellent tolerability, especially at high charge-discharge rate. Meanwhile, such type of batteries also exhibited high durability and safety index. On the other hand, ambient temperatures had significant effect on the battery performance. For instance, the discharge capacity declined sharply at low temperature (-30 ℃), with only 89.89% relative capacity (compared to 25 ℃). Also the battery cycle life was shortened at high charge-discharge rate. Moreover, based on the climate conditions in the severely cold and high elevation regions, the lithium battery energy storage system was optimized respectively, and the reliability of system was experimentally verified in harsh environments. From the research results certain technical support can be provided for the application of lithium iron phosphate batteries in the severely cold and high elevation regions.

Key words: alpine and high elevation, lithium iron phosphate battery, performance testing, optimized design

ZHAO Bin, HU Ruwei, JIANG Dongfang, DONG Xiaodong, LUO Weilin, LIU Hui. Optimized Design of Lithium Battery System for Microgrid Energy Storage in Severely Cold and High Elevation Regions[J]. Electric Power, 2020, 53(5): 128-134.

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Optimized Design of Lithium Battery System for Microgrid Energy Storage in Severely Cold and High Elevation Regions

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