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This paper introduces the scheme for protection based on the needs of DG growth and automatic device control, which is to minimize fault duration, to prevent the DG damage by changing the substation grounding mode, configuration of protective device, the scheme for fixed value setting, automatic switch-on device and low-frequency low-voltage separation mode. Among them, the corresponding "Islands"...
In this paper, the reliability and degradation mechanisms of high-brightness LEDs were studied, which were prepared by Cree and currently available on the market. Results revealed that operating currents had an important effect on the service performance of treated LEDs. Only at 350mA the tested LEDs had a good performance; at 750mA and 1000mA, they had the significant degradation; at 2000mA, they...
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