Control Strategy and Economic Analysis of Energy Storage System Based on Bidirectional Complementary

doi:10.3969/j.issn.1000－7229.2016.08.015

Abstract

Abstract: The high cost and immature control technology of energy storage system restrict the large-scale application of battery energy storage system. With full consideration of the economy of battery energy storage system, this paper proposes the control strategy for energy storage system based on bidirectional complementary, in which the bidirectional complementary battery energy storage system is composed of two groups of batteries. We calculate the the depth of discharge （DoD） by rain flow count method, in order to characterize the cycle life of the battery; and establish the charge and discharge control model for bidirectional complementaryenergy storage system. Taking the measured data of an photovoltaic-energy storage hybrid power station as example, we simulate and analyze the economy of the control strategy for bidirectional complementary battery energy storage system, in the different limited range of the critical state of charge during charge-discharge in energy storage system. The simulation results show that, compared with the control strategy of single energy storage system, the the control strategy of battery energy storage system based on bidirectional complementary can effectively improve the service life of the system and reduce the cost of energy storage system, which has a good prospect of engineering application.

Key words: energy storage system, bidirectional complementary, control strategy, economic analysis

CLC Number:

TM 912

ZHANG Hua, ZHANG Bin, JI Tianming, HAN Xiaojuan. Control Strategy and Economic Analysis of Energy Storage System Based on Bidirectional Complementary[J]. Electric Power Construction, 2016, 37(8): 96-.

References

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