Optimal power flow-based hierarchical control method for distributed energy storage system (ESS)

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United States of America Patent

PATENT NO 12119650
APP PUB NO 20240222976A1
SERIAL NO

17923917

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Abstract

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Disclosed is an optimal power flow-based hierarchical control method for a distributed energy storage system (ESS), where the method divides control of an energy storage cluster into three layers, performs primary and secondary control to realize intra-cluster control, and performs tertiary control to realize inter-cluster control. In the primary control, droop coefficients are set to realize intra-cluster basic power distribution. In the secondary control, a frequency/voltage shift and uneven power distribution that are caused by a droop are compensated for based on a consistency algorithm. In the tertiary control, a central controller is set, a solution of an optimal power flow is calculated and delivered to each cluster as a control signal, and the control signal is tracked in real time through the secondary control and the primary control. The method adjusts a reference voltage of each energy storage cluster without requiring a common bus.

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Patent Owner(s)

Patent OwnerAddress
STATE GRID HUBEI ELECTRIC POWER RESEARCH INSTITUTE430077 NO 227 XUDONG STREET HONGSHAN DISTRICT WUHAN CITY HUBEI PROVINCE WUHAN CITY HUBEI PROVINCE 430077

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cai, Defu Hubei, CN 2 64
Chen, Rusi Hubei, CN 1 0
Li, Xiaohui Hubei, CN 61 365
Liu, Haiguang Hubei, CN 3 3
Sun, Guanqun Hubei, CN 1 0
Wan, Li Hubei, CN 73 409
Wang, Erxi Hubei, CN 1 0
Wang, Tao Hubei, CN 1447 9693
Wang, Wenna Hubei, CN 1 0
Wang, Zuowei Hubei, CN 5 0
Zhang, Liangyi Hubei, CN 10 44
Zhou, Kunpeng Hubei, CN 2 4

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