Xi'an Jiaotong University

Jinru Sun

Fei Yang

Mingzhe Rong

Yi Wu

Chunping Niu

Yifei Wu

Jun Wang

Jingliang Chen

Xueling Yao

Wenju Xu

The disclosure discloses a generator circuit breaker control method based on short-circuit fault current symmetry. The method includes: collecting, by a control device, current on an outlet side of a generator 7 real time; calculating a transferring current feeding moment based on a current symmetry method when fault current rises to a peak value after a short-circuit fault occurs; correcting the transferring current feeding moment by a correction coefficient; and then calculating a breaker switching moment, thereby realizing precise control on a generator circuit breaker. The method mainly addresses the situation that the existing control method cannot effectively cope with the complexity of the short-circuit fault current on the outlet side of the generator, and fills the blank of the effective method for short-circuit control of the generator circuit breaker.

Generator circuit breaker control method based on short-circuit fault current symmetry

A lightning damage assessment method for the carbon fiber reinforced polymer (CFRP) material considering non-linear impedance characteristic includes steps of: studying various influencing factors of the lightning damage of the CFRP material under the action of the single lightning current component; obtaining the law between the lightning damage of the CFRP material, including the lightning damage area and depth, and various influencing factors, including the peak value, the rising rate, the charge transfer amount, the specific energy of the single lightning current component, and the non-linear impedance characteristic of the CFRP; on the basis of the law, building the multi-factor assessment model of the lightning damage of CFRP material under the action of the single lightning current component; and obtaining mathematical expressions between the lightning damage of the CFRP material and the influencing factors.

Lightning damage assessment method for carbon fiber reinforced polymer material considering non-linear impedance characteristic

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Shaanxi, China

Jinru Sun