Grounding faults of cascade battery energy storage system

Author

Ling Zhi-Bin ; Cao Yang ; Ma Qin-Dong ; Chen Man ; Guo Hai-Feng ; Li Yong-Qi

Author_Institution

Electr. Eng. Dept., Shanghai Jiao Tong Univ., Shanghai, China

fYear

2014

fDate

27-31 July 2014

Firstpage

1

Lastpage

5

Abstract

Grounding faults are inevitable when cascade battery energy storage system (CBESS) is in operation, so the detection and protection are very important in the practical application. The possible grounding fault types of the 10kV CBESS and the detection protection method were analyzed. It could be known that single point grounding fault in CBESS could be detected by monitoring CBESS neutral voltage, and there is no overcurrent in circuit. When two points grounding fault or multi-point grounding fault occurred, the faults could be detected by overcurrent protection or short circuit protection of power unit, and the cascaded battery energy storage system should stop operation.

Keywords

battery storage plants; earthing; energy storage; overcurrent protection; CBESS neutral voltage monitoring; cascade battery energy storage system; detection protection method; grounding fault types; multipoint grounding fault; overcurrent protection; power unit; short circuit protection; voltage 10 kV; Batteries; Circuit faults; Equivalent circuits; Grounding; Inductors; Short-circuit currents; Cascaded Battery energy storage system; Grounding fault; Overcurrent; Power conversion system; Short circuit;

fLanguage

English

Publisher

ieee

Conference_Titel

PES General Meeting | Conference & Exposition, 2014 IEEE

Conference_Location

National Harbor, MD

Type

conf

DOI

10.1109/PESGM.2014.6939330

Filename

6939330