The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 15, 2024
Filed:
Sep. 01, 2022
State Grid Hubei Electric Power Research Institute, Hubei, CN;
Defu Cai, Hubei, CN;
Kunpeng Zhou, Hubei, CN;
Zuowei Wang, Hubei, CN;
Xiaohui Li, Hubei, CN;
Li Wan, Hubei, CN;
Haiguang Liu, Hubei, CN;
Rusi Chen, Hubei, CN;
Wenna Wang, Hubei, CN;
Tao Wang, Hubei, CN;
Liangyi Zhang, Hubei, CN;
Guanqun Sun, Hubei, CN;
Erxi Wang, Hubei, CN;
Abstract
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.