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1. (WO2017148336) BATTERY PACK STRING FAULT IDENTIFICATION METHOD IN PHOTOELECTRIC SYSTEM, APPARATUS AND DEVICE

Pub. No.:    WO/2017/148336    International Application No.:    PCT/CN2017/074813
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Sat Feb 25 00:59:59 CET 2017
IPC: H02S 50/10
Applicants: HUAWEI TECHNOLOGIES CO., LTD.
华为技术有限公司
Inventors: YANG, Guangping
杨光平
GAO, Yongbing
高拥兵
Title: BATTERY PACK STRING FAULT IDENTIFICATION METHOD IN PHOTOELECTRIC SYSTEM, APPARATUS AND DEVICE
Abstract:
Provided are a battery pack string fault identification method in a photoelectric system, an apparatus and a device. The method comprises: acquiring at least two sets of I-V numerical values of a first battery pack string in a photoelectric system; performing fitting processing by adopting a predetermined pack string physical model according to the at least two sets of I-V numerical values so as to obtain at least one feature parameter of the first battery pack string; and comparing the at least one feature parameter with a standard feature parameter acquired in advance to determine whether the first battery pack string fails, or performing curve fitting processing on collected data through the pack string physical model. The method can be widely applied, feature parameters obtained through integrated processing of all actually measured data of a battery pack string are compared with the standard feature parameters when a fault does not occur, misjudgement is not caused by a test error of individual points and judgement does not depend on an environment, and thus, the solution is not influenced by environmental inconsistency and processing efficiency and accuracy of pack string fault identification are effectively improved.